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1. Raise Jack FERE zq to Suppor X VOS A AS HH Fan p j e Floor Stand Partially to Support Fania Hidden Jack Location Remove and retain See ee Remove and retain any hardware used any hardware used DPN001695 to secure the lowered fan to secure the lowered fan Page 1 Rev 5 6 Insert a field supplied fan removal device under the fan module The fan removal device should rest securely on the front and rear frame channels 7 Disconnect high voltage and low voltage fan motor wiring from the fan motor electric component inside the electric panel Carefully cut cable ties as needed 8 Using the removal device slide the fan module out through the front of the unit 9 To reinstall the fan module reverse the steps above Remove the field supplied fan removal device before resuming unit operation NOTE Refer to the unit s electrical schematic for specific wire attachment points 48 EC Fans Lowering and Removing Figure 42 Removing the EC fans Steps 6 through 9 Front Frame Raise Fan Channel Module With Jack Disconnect Hign and Low Vo
2. Field pitch condensate drain line a minimum of 1 8 3 2 mm per foot 305 mm All units contain a factory installed condensate trap Do not trap external to the unit Drain line may contain boiling water Select appropriate drain system materials The drain line must comply with all local codes Supplied on Dual Cooling Systems only 117 Piping Schematics Figure 91 Primary connection locations upflow water glycol GLYCOOL 28 42kW 8 12 ton all compressor models NOTES 1 Drawing not to scale 2 Tolerance on all piping dimensions is 1 2 13mm Field routed alternatives for water glycol connections See submittal page DPNO0 1120 for blower outlet All dimensions from rear corner of unit including and deck dimensional data panels 0 Blower Outlet 35 8 889mm 203mm Y 86 2184mm E Front Top View of Unit 152mm 17 3 16 437mm 3 7 8 98mm 362mm 15 7 8 CGD Front Section View 403mm Left Front Panel Not Shown DPN001179 Left Side Section View Rev 2 Xx Y Connection Size Opening Point Description in mm in mm in mm W1A _ Water Glycol GLYCOOL Access Bottom 79 15 16 2030 9 229 3 1 2 x 8 89 x 203 WA Water Glycol GLYCOOL Access Top 79 15 16 2030 9 229 3 1 2 x 8 89 x 203 W3A Water Glycol GLYCOOL Access Side 6 x
3. Inspection Date Job Name Indoor Unit Model Indoor Unit Serial Number Condenser Drycooler Model Condenser Drycooler Serial Room Temperature Humidity i Ambient Temperature e Filters 1 Check replace filters 2 Grille area unrestricted 3 Wipe section clean 4 Coil clean Blower Section 1 Blower wheels free of debris Check belt tension and condition replace if needed Check lube bearings Check motor mount Motor amp draw L1 L2 L3 Compare to nameplate amps Reheat 2 3 4 Check sheave pulley replace if worn 5 6 1 Inspect elements 2 Check wire connections inside reheat box __ 3 Reheat amp draw _ a 1 _ a 2 __a 3 Steam Generating Humidifier __ 1 Check drain valve drain lines trap for clogs ___ 2 Check water make up valve and all hoses for leaks 3 Clean the fill strainer ___ 4 Replace humidifier bottle if necessary ___ 5 Check operation of humidifier 6 Humidifier amp draw L1 L2 L3 Infrared Humidifier 1 Check drain lines and trap for clogs Check clean pan for mineral deposits Clean reflector Check water make up valve for leaks 2 3 4 5 Check humidifier lamps replace if burnt out 6 Check wire connections inside humidifier box 7 Humidifier amp draw L1 L2 L3 150 HVAC Maintenance Checklist Condensate Pump __ 1 Check for debris in sump __ 2 Check operation of float s free movement Refrigeration Piping __ 1 Check refri
4. Q DA Y Y LY 76 1930mm 26 108 2743mm Assembled Length Drawing views are simplified with panels removed to show overall dimensions See disassembly and handling instructions in installation manual Filter amp Electric Box Assembly 39 991mm 76 l 1930mm Blower amp Coil Assembled Assembly Height 59 7 16 1509mm 37 940mm DPNO00926 Rev 3 Table 32 Component weights downflow air cooled 53 77kW 15 22 ton semi hermetic forward curved and EC fan Dry Weight Approximate Including Panels Ib kg Component Air Cooled Dual Cool Compressor Assembly 970 441 970 441 Filter amp Electric Box Assembly 250 114 250 114 Blower amp Coil Assembly 1230 560 1410 641 58 Disassembling the Liebert DS for Transport Figure 47 Component dimensions downflow air cooled 53 77kW 15 22 ton scroll digital scroll compressor models forward curved and EC fan Drawing views are simplified with panels removed to show overall dimensions See disassembly and handling instructions in installation manual Filter amp Electric Box Assembly 39 991mm Com et pressor Assembly 1930mm Blower amp Coil Assembled Assembly Height 76 1930mm Loss 18 m hg osgan m 838mm 81mm 97 2464mm DPN000927 Assembled Length Rev 3 Table 33 Component weights downflow air cooled 53 77kW 15 22 to
5. 13 4 1 A WARNING Risk of electric shock Can cause injury or death Dangerous external voltages can be present at main fan terminal KL2 even after the motor has been turned off A WARNING Risk of improper handling Can cause injury Use proper skin protection when touching the electronics housing or allow time for the housing to cool before replacing parts The electronics housing can get hot and can cause severe burns A CAUTION Risk of improper moving lifting and handling Can cause equipment damage or injury Only properly trained and qualified personnel should work on this equipment Fan modules weigh in excess of 100lb 45kg each Take precautions to avoid back injury and dropping during removal NOTICE Risk of improper installation Can cause equipment damage Only a properly trained and qualified technician should install or open this motor Use 60 75 C copper wire only Use Class 1 wires only Humidifier Infrared During normal humidifier operation deposits of mineral solids will collect in humidifier pan and on the float switch These must be cleaned periodically to ensure proper operation Frequency of cleaning must be locally established since it is dependant on humidifier usage and local water quality A spare pan is recommended to reduce maintenance time at unit The Liebert autoflush system can greatly increase the time between cleanings but does not eliminate the need for periodic checks and mainten
6. Cabinet and floor planning dimensions downflow water glycol GLYCOOL 28 42kW 8 12 ton all compressor models Cabinet and floor planning dimensions downflow air cooled 53 77kW 15 22 ton semi hermetic compressor Models Cabinet and floor planning dimensions downflow air cooled 53 77kW 15 22 ton scroll compress6r models i mrs pes eka E R RE eee wR See BL Cabinet and floor planning dimensions downflow water glycol GLYCOOL 53 77kW 15 22 ton all compressor models Cabinet and floor planning dimensions downflow air cooled 105kW 30 ton all compr ssor mod ls ci a A E AE EP AAA Pears sah ee a A E Cabinet and floor planning dimensions downflow water glycol GLYCOOL 105kW 30 ton all compressor models Cabinet and floor planning dimensions upflow air cooled 28 42kW 8 12 ton semi hermetic compressor Models Cabinet and floor planning dimensions upflow air cooled 28 42kW 8 12 ton scroll or digital scroll compressor models ooooooo cee ee cee e een nas Cabinet and floor planning dimensions upflow water glycol GLYCOOL 28 42kW 8 12 ton all compressor models Cabinet and floor planning dimensions upflow air cooled 53 77kW 15 22 ton semi hermetic compressor Models Cabinet and floor planning dimensions upflow air cooled 53 77kW 15 22 ton scroll or digital scroll compressor models oo ooo Cabinet and floor planning dimensions upflow wa
7. Low Pressure Cutout DX only 138 65 50 345 20 Freeze Protection DX w Econ O Coil 48 331 Due to control processing time the pumpdown pressure at compressor shut off will be approximately 20psiG 138kPa 35psiA 241kPa even though the setpoint is 35psiG 241kPa 50psiA 344kPa 6 Charge the unit until the liquid line sight glass becomes clear Then add one additional pound 2 2 kg of refrigerant Q NOTE A digital scroll compressor will have a clear sight glass only when operating at 100 capacity When operating below 100 the sight glass may show bubbles with each 15 second unloading cycle 92 Piping 9 3 3 Lee Temp Receiver Refrigerant Level On each receiver at the condenser are two refrigerant level sight glasses Refrigerant level will vary with outside temperature Check refrigerant level after the unit has been on for at least 15 minutes Sight Glass Levels 40 F 4 5 C and lower bottom sight glass is 3 4 full 40 to 60 F 4 5 to 15 5 C bottom sight glass is full 60 F 15 5 C and higher top sight glass is 3 4 full Water Glycol Cooled System The water glycol cooled system is factory charged and includes and includes a Paradenser condenser and control valves Table 56 Water Glycol cooled and GLYCOOL suction pressure transducer settings R 22 R 407C Gauge Sea Level Absolute Gauge Sea Level A
8. 1 2 13mm FRONT VIEW SECTION A A BLOWER OUTLET A All dimensions from rear corner of unit including panels FRONT OF UNIT El IN 109 2769mm a DPN002183 Rev 0 Xx Y Connection Size Opening Point Description in mm in mm in mm W Water Glycol GLYCOOL Access 103 2616 9 229 3 1 2 x 8 89 x 203 WS Water Glycol GLYCOOLSupply 104 3 4 2661 11 279 2 1 8 Cu Sweat WR Water Glycol GLYCOOL Return 104 3 4 2661 15 381 2 1 8 Cu Sweat Ke nero Neue nen 68 3 8 1737 31 3 8 797 3 4 FPT W Optional Pump 68 3 8 1737mm 31 3 8 797 1 2 Cu Sweat HUM Humidifier Supply Line 76 1 2 1943 29 736 1 4 Cu Sweat ECS Econ O Coil Supply 78 5 8 1997 22 1 4 565 2 1 8 Cu Sweat ECR Econ O Coil Return 73 15 16 1862 26 9 16 675 2 1 8 Cu Sweat HS Hot Water Reheat Supply CONSULT FACTORY HR Hot Water Reheat Return CONSULT FACTORY El Electrical Conn High Volt 78 1 2 1994 31 1 8 790 2 1 2 E2 Electrical Conn High Volt 75 3 8 1915 31 1 8 790 2 1 2 LV1 Electrical Conn Low Volt 2 51 29 737 7 8 LV2 Electrical Conn Low Volt 2 51 30 7 8 784 7 8 LV3 Electrical Conn Low Volt 2 51 32 813 7 8 B1 Blower Outlet 4 1 2 114 33 838 58 3 8 x 30 1483 x 762 Field pitch condensate drain line a minimum of 1 8 3 2 mm per foot 305 mm All units contain a factory installed condensate trap Do not trap
9. Do not install Liebert DS units in an alcove or at the end of a long narrow room Install the units as close as possible to the largest heat load Allow at least the minimum recommended clearances for maintenance and service See Figures 6 through 21 for dimensions Emerson recommends installing an under floor water detection system Contact your local Emerson representative for information 3 2 Air Distribution Downflow Units Verify that the raised floor has been properly sized for the unit s airflow and the room is free of airflow restrictions Perforated floor tiles in the raised floor should ensure minimal pressure loss The raised floor must provide 7 1 2 191mm of clearance Ensure that there is adequate clearance above the unit for service such as replacing filters Optional plenums are available for downflow unit ducting Figure 4 Downflow unit ducting and plenum ducting Field Fabricated Ductwork Field Service Access for filter replacement minimum height of 12 305mm minimum distance from unit 2 51mm Field Fabricated Ductwork Provided Condenser Access water glycol and GLYCOOL units only Provided Service Access Door for filter replacement Optional DIRECT UNIT DUCTING Liebert Plenum Provided Condenser Access water glycol and GLYCOOL units only Liebert Plenum Refer to plenum installation sheet 186582P1 included i
10. Top View 15 381mm ae Shaded areas indicate a EST recommended minimum clearance for component A access on ront View DPN000795 51 mm 85 Rev 3 2159mm Table 3 Weights for downflow air cooled 28 42kW 8 12 ton semi hermetic compressor models Dry Weight Ib kg Approximate Model No 028 035 042 Air Cooled 1780 809 Dual Cool 1930 877 11 Liebert DS Dimensions and Weights Figure 7 Cabinet and floor planning dimensions downflow air cooled 28 42kW 8 12 ton scroll compressor models Secondary Refrigerant Piping Entrance Notes Filters are accessible through top of unit only Downflow electrical connections can be made from top or bottom of unit 56 7 8 Opening 24 3 8 619mm Air Inlet Opening Opening 3 4 Bezels iG 9mm Top View Minimum required Secondary Entrance Secondary Entrance for filter replacement High Volt Connection s Low Volt Connections 76 1930mm 864mm Shaded area indicates a recommended minimum y Clearance for component gt View access DPN000796 72 Rev 2 ir anion 1829mm Table 4 Weights for downflow air cooled 28 42kW 8 12 ton scroll compressor models Dry Weight Ib kg Approximate Model No 028 035 042 Air Cooled 1470 668 Dual Cool 1620 736 12 Liebert DS Dimensions and Weights Figure 8 Cabinet and floor planning d
11. s blower and coil assembly section Disconnect the air sail switch wires and pull them into the electric box Smoke Detector Optional Component a Remove the smoke detector cover b Remove the plug connector from the smoke detector and pull it into electric box c Remove the wires from terminal strips 91 92 93 and route them into the smoke detector box d Remove the sensing tube from top of the smoke detector The wand and tube will remain attached to filter and electric box assembly Close the electric box cover and the accent panel Remove the pull bar that supports the accent panel from the left end of unit otherwise it will fall out when the compressor section is removed 51 Disassembling the Liebert DS for Transport 7 2 1 18 Evacuate and recover all refrigerant from the Liebert DS Air cooled units are shipped with a nitrogen holding charge Water glycol and GLYCOOL units are factory charged with refrigerant Refer to 9 0 Piping for piping guidelines and to the ASHRAE Refrigeration Handbook for general good practice refrigeration piping NOTICE Risk of compressor oil contamination with moisture Can cause equipment damage Emerson recommends front seating the compressor service valves Front seating the valves keeps the nitrogen or refrigerant charge in the compressor and prevents moisture from contaminating the compressor oil This is particularly important with units using R 407C refrigerant 19
12. 15 22 ton all compressor models ES NON Component weights upflow air cooled 105kW 30 ton semi hermetic compressor TOGO O NN RON Component weights upflow air cooled 105kW 30 ton scroll digital scroll compressor MA A A a e ets e Component weights upflow water glycol GLYCOOL 105kW 30 ton all compressor Model Id ce lath aac da a ao a ee nek Gees Electrical field connection descriptions 0 ce eee eee nee TAV GECOR AY P O25 Ti e ae we AA a OR un lg SG at te oe DA Medien oe ie AMA ew AA Recommended refrigerant line sizes OD copper inches 0 0 0 cee ee eens Indoor unit approximate refrigerant charge for R 22 or R 407C 1 ees R 22 and R 407C refrigerant required approximate o Interconnecting piping refrigerant charge 0 ccc eee eee eens Additional oil required per refrigerant charge 0 0 0c tenet eens Fan speed suction pressure transducer settingS 0 0 0 0 cece eee eens Lee Temp suction pressure transducer settingS 00 ect eee ees Water Glycol cooled and GLYCOOL suction pressure transducer settings Piping data upflow air cooled 105kW 30 ton all ooo ooooocooooooooooooo Piping data upflow upflow water glycol GLYCOOL 105kW 30 ton all Filter quantities downflow units 0 0 eee eee eens Filter quantities upflow units 0 een ee teen eens Humidifier canister part numbers 1 0 ee eee eee nee nas
13. 1984 x 30 ton Rear 15 7 8 14 11 16 11 5 8 25 5 8 30 3 4 54 1 2 78 1 8 Throw 404 373 295 651 781 1384 1984 34 Liebert DS Dimensions and Weights Figure 30 Rear return filter box dimensions Filter Filter Access Access Door Door 7 15 16 M 202mm 76 1930mm 38 1 4 971mm Duct Size T 1016mm 3 1 2 89mm D Duct Size B NOTES 1 Filters can be accessed from either side DPN001196 2 25 635mm minimum clearance provided on one side for filter access 3 Filter boxes are shipped flat and must be field assembled Rev 0 Table 27 Rear return filter box dimensions Dimensions in mm Compressor Type A B Cc D Filters 28 42kW 8 12 ton Air Cooled Scroll z k and Air Cooled Digital Scroll Models 4 1 4 108 50 3 4 1289 18 457 47 5 8 1210 4 28 42kW 8 12 ton Semi Hermetic 3 A E and all Water Glycol GLYCOOL Models 4 1 4 108 50 3 4 1289 31 787 47 5 8 1210 4 53 77kW 15 22 ton Air Cooled Scroll f 7 and Air Cooled Digital Scroll Models 3 1 4 83 75 1 2 1918 19 1 4 489 72 3 8 1838 6 53 77kW 15 22 ton Semi Hermetic o x a Z and all Water Glycol GLYCOOL Models 3 1 4 83 75 1 2 1918 30 1 4 768 72 3 8 1838 6 105kW 30 ton All Models 2 1 4 57 100 1 4 2546 29 1 2 749 97 1 8 2467 8 35 Liebert DS Dimensions and Weights Figure
14. 349 770 349 770 349 Filter 8 Coil Assembly 760 345 940 426 760 345 940 426 72 Disassembling the Liebert DS for Transport Figure 58 Component dimensions upflow air cooled 105kW 30 ton semi hermetic compressor models Y J i ELA PYR JEEN NM ZA y Drawing views are simplified with panels removed to show overall dimensions See disassembly and handling instructions in installation manual V S Ly Blower amp Electric Box Assembly _ kmri a 31 1 4 EEAS Compressor Assembly 76 1930mm Assembled Filter amp Coil Assembly Height 45 13 16 1164mm Los 2667mm DPNO01254 131 3327mm Assembled Length REVO Table 44 Component weights upflow air cooled 105kW 30 ton semi hermetic compressor models Dry Weight Approximate Including Panels Ib kg Component Air Cooled Dual Cool Compressor Assembly 950 431 950 431 Blower amp Electric Box Assembly 1080 490 1080 490 Filter amp Coil Assembly 970 440 1300 590 73 Disassembling the Liebert DS for Transport Figure 59 Component dimensions upflow air cooled 105kW 30 ton scroll digital scroll compressor models Drawing views are simplified with panels removed to show overall dimensions See disassembly and handling instructions in installation manual Blower amp Electric Box Assembly Compressor As
15. ECR Econ O Coil Return 72 1829 29 737 2 1 8 Cu Sweat El Electrical Conn High Volt 78 1 2 1994 31 1 8 790 2 1 2 E2 Electrical Conn High Volt 75 3 8 1915 31 1 8 790 2 1 2 LV1 Electrical Conn Low Volt 1 7 8 48 28 1 2 724 7 8 LV2 Electrical Conn Low Volt 1 7 8 48 30 1 4 768 7 8 LV3 Electrical Conn Low Volt 1 7 8 48 32 813 7 8 E Blower Outlet 15 x 15 23 1 8 587 18 1 16 459 18 3 4 x 16 1 16 476 x 408 Blower Outlet 15 x 11 27 3 4 705 18 1 16 459 14 3 4 x 16 1 16 375 x 408 ES Blower Outlet 15 x 15 50 3 8 1280 18 1 16 459 18 3 4 x 16 1 16 476 x 408 18 1 16 459 14 3 4 x 16 1 16 375 x 408 Field pitch condensate drain line a minimum of 1 8 3 2 mm per foot 305 mm All units contain a factory installed condensate trap Do not trap external to the unit Drain line may contain boiling water Select appropriate drain system materials The drain line must comply with all local codes Supplied on Dual Cooling Systems only 4 pipe system 106 Piping Schematics Figure 80 Primary connection locations downflow air cooled 53 77kW 15 22 tons semi hermetic compressor models with EC fan Note Drawing not to scale Tolerance on all piping dimensions is 1 2 13mm L 16 7 16 418mm CD VO 00 A is A FRONT VIEW SECTION A A E2 HUM FRONTOFU 109 2769mm All dimensions from rear corner of unit including panels BLO
16. F 23 9 C 45 F 7 2 C AQ3 F4 70 F 21 1 C 40 F 4 4 C Table 68 Aquastat settings six fan drycoolers Dial Setting Stat Open Temp Set for Mid Differential 8 F 4 4 C Rise to Close Stat Location Factory Setting Optional Setting Aquastat Fans Cabinet Glycol see Notes 1 and 2 GLYCOOL see Note 3 AQ1 F1 Main 65 F 18 3 C 35 F 1 7 C AQ2 F2 Main 70 F 21 1 C 40 F 4 4 C AQ3 F3 amp F4 Auxiliary 73 F 22 8 C 43 F 6 1 C AQ4 F5 amp F6 Auxiliary 75 F 23 9 C 45 F 7 2 C Table 69 Aquastat settings eight fan drycoolers Dial Setting Stat Open Temp Set for Mid Differential 8 F 4 4 C Rise to Close Stat Location Factory Setting Optional Setting Aquastat Fans Cabinet Glycol see Notes 1 and 2 GLYCOOL see Note 3 AQ1 F1 Main 65 F 18 3 C 35 F 1 7 C AQ2 F2 Main 70 F 21 1 C 40 F 4 4 C AQ3 F3 amp F4 Auxiliary 73 F 22 8 C 43 F 6 1 C AQ4 F5 amp F6 Auxiliary 75 F 23 9 C 45 F 7 2 C AQ5 F7 amp F8 Main 78 F 25 6 C 48 F 8 9 C NOTE Q All drycoolers are shipped at Factory Setting 2 Factory Setting is used for all glycol applications except single drycooler loops with motor ball valve controls 3 Stats must be field adjusted to Optional Setting for GLYCOOL Dual Cool applications and all single drycooler loops using motor ball valve flow controls 149 HVAC Maintenance Checklist 14 0 HVAC MAINTENANCE CHECKLIST
17. Piping 9 3 2 Air Cooled Condenser with Liebert Lee Temp Flooded Condenser Head Pressure Control System The Liebert Lee Temp system consists of a modulating type head pressure control valve and insulated receivers with heater pads to ensure operation at ambient temperatures as low as 30 F 34 4 C The Liebert Lee Temp system can be used with any Liebert DS compressor choice Liebert Lee Temp Piping Two discharge lines and two liquid lines must be field installed between the indoor unit and the outdoor condenser See Figures 67 and 69 for details Liebert Lee Temp Controlled Materials Supplied e Built in pre wired condenser control box Air Cooled condenser Piping access cover to be reinstalled when piping is complete models with one to four fans only Bolts four per leg 3 8 x 5 8 Terminal block for two wire 24V interlock connection between unit and condenser Condenser legs four with 1 fan six on two three and six fan models and eight on four and eight fan models Bolts six per receiver 3 8 x 1 Lee Temp system Insulated storage recelver one per circuit Head pressure control valve with integral check valve one per circuit Service valve one per circuit Pressure relief valve one per circuit Liquid level sight glass two per circuit Check valve one per circuit NOTE Lee Temp heater pads require a separate continuous electrical source See nameplate on unit for proper vol
18. Steam generating humidifier status lamps causes corrective acti0M ooooooo o Steam generating humidifier troubleshooting guide 000s Compressor oll types sas a o a a ta hh Geass nets BN Recommended refrigerant pressures eee eee eens Water glycol system conditions requiring optional settings for aquastats Aquastat settings two fan through four fan drycoolers asaan cee eee nes Aquastat settings six fan drycoolers 0 0 cee nee n teenies Aquastat settings eight fan drycoolers 0 0 nee teenies viii IMPORTANT SAFETY INSTRUCTIONS SAVE THESE INSTRUCTIONS This manual contains important safety instructions that should be followed during the installation and maintenance of the Liebert DS Read this manual thoroughly before attempting to install or operate this unit Only qualified personnel should move install or service this equipment Adhere to all warnings cautions and installation operating and safety instructions on the unit and in this manual Follow all operating and user instructions A A A A WARNING Risk of electric shock Can cause injury or death Disconnect local and remote power supplies before working within Customer must provide earth ground to unit per NEC CEC and local codes as applicable Before proceeding with installation read all instructions verify that all the parts are included and check the nameplate to be sure
19. disabled A minimum 20psig 138kPa must be established and maintained for the compressor to operate The charging function can be reset as many times as required to complete unit charging Fan speed suction pressure transducer settings R 22 R 407C Absolute Gauge Sea Level Gauge Sea Level Absolute Function Pump Down Cutout psiG kPa 35 241 psiA kPa 50 344 psiG kPa 35 241 psiA kPa Pump Down Reset 448 552 Minimum to Start Cooling Low Pressure Cutout 65 448 35 241 20 138 80 552 50 344 35 241 Freeze Protection DX w Econ O Coil 48 331 63 434 Due to control processing time the pumpdown pressure at compressor shutoff will be approximately 20psiG 138kPa 35psiA 241 kPa even though the setpoint is 35 psiG 241 kPa 50 psiA 344kPa 6 Charge the unit until the liquid line sight glass becomes clear Then add one additional pound 2 2kg of refrigerant NOTE A digital scroll compressor will have a clear sight glass only when operating at 100 capacity When operating below 100 the sight glass may show bubbles with each 15 second unloading cycle 7 As head pressure builds the variable fan speed controlled condenser fan begins rotating The fan will run at full speed when sufficient head pressure is developed fan starts to rotate at 190 psig 1310 kPA and is full speed at 250 psig 1724 kPA 90
20. on one side of unit for access to rear return filter box See DPN001196 Figure 30 Piping Entrance 3 4 o l 19mm Minimum required Bezels for blower replacement TOP VIEW High Volt Connection s Low Volt Connection s 109 2769mm PA NI 2 Shaded area indicates a recommended minimum clearance for component access DPNO01165 FRONT VIEW Rev 1 Table 14 Weights for upflow air cooled 53 77kW 15 22 ton semi hermetic compressor models Dry Weight Ib kg approximate 51mm Model 053 070 077 Air Cooled 2350 1069 2500 1134 Dual Cool 2530 1150 2680 1216 22 Liebert DS Dimensions and Weights Figure 18 Cabinet and floor planning dimensions upflow air cooled 53 77kW 15 22 ton scroll or digital scroll compressor models Note Front air return unit shown For rear return unit in addition to front service Alternate Refrigerant area shown also include 25 635mm on Piping Entrance one side of unit for access to rear return EE E nnn filter box See DPN001196 Figure 30 3 4 Minimum required 19mm for blower replacement TOP VIEW Low Volt High Volt Connection s Connection s Shaded area indicates a recommended minimum clearance for component access y LA o l h97 2464mm FRONT VIEW Rev 1 Table 15 Weight for upflow air cooled 53 77kW 15 22 ton scroll or digital scroll compressor models DPN
21. see Figure 36 The center of gravity varies depending on the unit size and selected options The forklift s tines must be equally spaced on either side of the center of gravity indicator 2 Insert the tines of the forklift completely under the base of the Liebert DS A WARNING Risk of improper moving Can cause equipment damage injury or death Ensure that the tines are level not angled up or down The tines must be at a height that will allow proper clearance under the unit Ensure the tines extend beyond the opposite side of the unit 3 Remove the lag bolts from each bracket holding the Liebert DS to the skid 4 Lift the unit off the skid no more than 6 152mm and remove the skid Figure 34 Remove the unit from the skid 181659P1 Rev 5 Equipment Inspection and Handling 5 2 2 Moving the Unit to the Installation Location with Piano Jacks 1 2 3 4 With the Liebert DS elevated place two piano jacks into position one at either end of the unit Lower the unit to a height suitable for the piano jacks and place protective material between the Liebert DS and the piano jacks Secure the unit to the piano jacks and remove the forklift Use the piano jacks to move the unit for installation Figure 35 Moving the unit to its installation location 181659P1 Rev 5 5 2 3 Removing Piano Jacks 1 2 3 Lower the unit as much as the piano jacks will allow Undo all strapping holding the piano jac
22. steam generating humidifier W Optional Pump 69 1 4 1759 30 762 1 2 Cu Sweat HUM Humidifier Supply Line 76 1 2 1943 29 736 1 4 Cu Sweat ECS Econ O Coil Supply 78 5 8 1997 22 1 4 565 2 1 8 Cu Sweat ECR Econ O Coil Return 72 1829 29 737 2 1 8 Cu Sweat El Electrical Conn High Volt 78 1 2 1994 31 1 8 790 2 1 2 E2 Electrical Conn High Volt 75 3 8 1915 31 1 8 790 2 1 2 LV1 Electrical Conn Low Volt 1 7 8 48 28 1 2 724 7 8 LV2 Electrical Conn Low Volt 1 7 8 48 30 1 4 768 7 8 LV3 Electrical Conn Low Volt 1 7 8 48 32 813 7 8 Bi Blower Outlet 15 x 15 23 1 8 587 18 1 16 459 18 3 4 x 16 1 16 476 x 408 Blower Outlet 15 x 11 27 3 4 705 18 1 16 459 14 3 4 x 16 1 16 375 x 408 5 Blower Outlet 15 x 15 50 3 8 1280 18 1 16 459 18 3 4 x 16 1 16 476 x 408 14 3 4 x 16 1 16 375 x 408 Field pitch condensate drain line a minimum of 1 8 3 2 mm per foot 305 mm All units contain a factory installed condensate trap Do not trap external to the unit Drain line may contain boiling water Select appropriate drain system materials The drain line must comply with all local codes Supplied on Dual Cooling Systems only 4 pipe system 110 Piping Schematics Figure 84 Primary connection locations downflow water glycol GLYCOOL 53 77kW 15 22 ton all compressor models with EC fan Note Drawing not to scale Tolerance on all piping dimensions is
23. 1 Table 7 Weights for downflow air cooled 53 77kW 15 22 ton scroll compressor models Dry Weight Ib kg Approximate Model No 053 070 077 Air Cooled 1920 873 1970 896 2020 919 Dual Cool 2100 955 2150 978 2200 1000 15 Liebert DS Dimensions and Weights Figure 11 Cabinet and floor planning dimensions downflow water glycol GLYCOOL 53 77kW 15 22 ton all compressor models Condenser Cleanout Access 80 2032mm Opening Notes Filters are accessible 24 5 8 625mm through top of unit only Opening Downflow electrical connections can be made from top or bottom of unit 4 i 3 4 20mm Bezels Secondary Condenser Fluid Piping Entrance Required for Secondary Entrance condenser cleanout Secondary Entrance Low Volt Connections mi High Volt Connection s OMS 24 Minimum required 610mm Y for filter replacement i 51mm Front View clearance for component DPN000931 access Rev 3 Table 8 Weights for downflow water glycol GLYCOOL 53 77kW 15 22 ton all compressor models Compressor Dry Weight Ib kg Approximate Type Model 053 070 077 Semi Hermetic Water Glycol 2650 1205 2700 1228 2750 1250 Compressor GLYCOOL Dual Cool 2830 1287 2880 1310 2930 1332 Scroll or Water Glycol 2220 1010 2270 1032 2320 1055 Digital Scroll Compressor GLYCOOL Dual Cool 2400 1091 245
24. 1 2 drain plugs using two wrenches to prevent damage to drain lines 6 Locate and remove the 3 diameter clean out plugs on top of shell assemblies use Craftsman 1 3 16 drag link socket Sears item 00944514000 or similar 7 Brush and flush each of the nominal 5 8 inner diameter rifled copper tubes Recommend using John R Robinson Inc or similar e Motorized Tube Cleaner Model JR3800 1200 Nylon brush 9 16 diameter Model JRRB211N 916 Flexible shaft Model JRRFS702 25 8 Reinstall 1 2 drain plugs 6 to 7 turns using Loctite 567 PST Thread Sealant as instructed by the manufacturer 9 Wipe clean the machine threads and sealing surfaces of 3 diameter clean out plugs 10 Remove and install new O rings Liebert part number 180750P1 on the 3 diameter clean out plugs Do not use thread sealant 11 Hand tighten 3 diameter clean out plugs and torque using drag link socket to 25 ft lb 12 Leak check fluid system refer to Leak Checking of Unit and Field Piping on page 85 13 Bleed system using Schrader ports near the top of the Paradenser 14 Ensure that condensing fluid isolation valves are fully open 15 Unit is ready to be put on line 13 14 Water Glycol Control Valves 13 14 1Regulating Valves Semi Hermetic and Standard Scroll Compressors The water regulating valves automatically regulate the amount of fluid necessary to remove the heat from the refrigeration system permitting more water to flow when l
25. 125 28mm diameter knockouts in top of box 5 Three phase electrical service Terminals are on high voltage terminal block disregard if unit has optional disconnect switch Three phase service not by Emerson 6 Earth ground Terminal for field supplied earth grounding wire Earth grounding required for all units 7 Remote unit shutdown Replace existing jumper between Terminals 37 amp 38 with field supplied normally closed switch having a minimum 75VA 24VAC rating Use field supplied Class 1 wiring 8 Customer alarm inputs Terminals for field supplied normally open contacts having a minimum 75VA 24VAC rating between Terminals 24 amp 50 51 55 56 Use field supplied Class 1 wiring Terminal availability varies by unit options 9 Liebert SiteScan Terminals 77 amp 78 for a 2 wire twisted pair communication cable available from Emerson to optional Liebert SiteScan The communication cable must be shielded on units with VFD or EC fans 10 Common alarm On any alarm normally open dry contact is closed across Terminals 75 amp 76 for remote indication 1A 24VAC max load Use field supplied Class 1 wiring 11 Heat rejection interlock On any call for compressor operation normally open dry contact is closed across Terminals 70 amp 71 to heat rejection equipment 1A 24VAC max load Use field supplied Class 1 wiring diameter concentric knockouts in bottom of box OPTIONAL ELECTRICAL CO
26. 31 Upflow unit plenum dimensions Front Views Check One 1 L with Grille L Without Grille 3 Li Saem Panel removable for condenser cleanout access water glycol GLYCOOL models only Left Side Views Check One 1 Rear Views Check One 1 C With Grille L Without Grille C With Grille _ L Without Grille Side View Unit With Plenum Notes 1 Typical 53 77kW 15 22ton unit orientation shown with grille plenum View varies by unit size and plenum selection 2 All plenums are shipped flat and must be field assembled 3 Optional grille plenum kits must include front or rear grille Front View Unit With Plenum 4 Non grille plenums are open on the top and not designed with duct flange Right Side Views Check One 1 C With Grille _ C Without Grille DPN001187 Rev 0 Table 28 Upflow unit plenum dimensions Plenum Dimensions in mm Grille Size in mm Nominal A B H Front Rear Grilles Side Grille 28 42kW 8 12 ton Air Cooled Scroll i E and Air Cooled Digital Scroll Models 59 1 4 1505 13 3 4 349 a9 18 x 55 457 x 1397 18 x 20 457 x 508 28 42kW 8 12 ton Semi Hermetic 508 and all Water Glycol GLYCOOL Models 59 1 4 1505 26 3 4 679 18 x 55 457 x 1397 18 x 20 457 x 508 53 77kW 15 22 ton Air Cooled Scroll z 7 and Air Coo
27. 8 Hot Hot Hot Hot Hot Hot Hot 100 ft 30m 3 4 5 8 7 8 5 8 7 8 5 8 1 1 8 7 8 1 1 8 7 8 1 1 8 7 8 1 3 8 7 8 150 ft 45m 7 8 5 8 7 8 5 8 1 1 8 5 8 1 1 8 7 8 1 1 8 7 8 1 1 8 7 8 1 3 8 1 1 8 Downsize vertical riser one trade size 1 1 8 to 7 8 Table 50 Indoor unit approximate refrigerant charge for R 22 or R 407C System Type Model R 22 Charge R 407C Charge per Circuit Ib kg per Circuit Ib kg 028 035 042 6 5 3 0 5 5 2 5 Air Cooled 053 070 077 9 5 5 0 8 0 3 6 105 11 0 5 0 9 5 4 3 028 035 042 13 0 5 9 12 2 5 6 Water Glycol GLYCOOL 053 070 077 18 5 8 4 17 0 7 8 105 24 0 10 9 22 5 10 3 86 Piping Table 51 Interconnecting piping refrigerant charge Line Size R 22 Ib 100 ft kg 30m R 407C Ib 100 ft kg 30m O D in Liquid Line Hot Gas Line Liquid Line Hot Gas Line 1 2 7 3 3 3 6 9 3 1 5 8 11 7 5 3 2 1 1 0 11 0 5 0 2 2 1 0 3 4 16 6 7 5 3 0 1 4 15 7 7 1 3 1 1 3 7 8 24 4 11 1 4 4 2 0 23 0 10 4 4 5 1 9 1 1 8 41 4 18 9 7 8 3 5 39 3 17 8 7 8 3 5 1 3 8 63 3 28 7 11 8 5 4 59 8 27 1 11 8 5 4 Table 52 R 22 and R 407C refrigerant required approximate Approximate R 22 Refrigerant Needed Approximate R 407C Refrigerant Needed Dual Ci
28. 8 1775 30 762 2 1 2 LV1 Electrical Connection Low Voltage 19 1 2 495 29 1 16 738 7 8 LV2 Electrical Connection Low Voltage 19 1 2 495 30 1 2 775 7 8 LV3 Electrical Connection Low Voltage 19 1 2 495 31 15 16 811 7 8 Field pitch condensate drain line a minimum of 1 8 3 2 mm per foot 305 mm All units contain a factory installed condensate trap Do not trap external to the unit Drain line may contain boiling water Select appropriate drain system materials The drain line must comply with all local codes Supplied on Dual Cool systems only four pipe system 120 Piping Schematics Figure 94 Primary connection locations upflow water glycol GLYCOOL 53 77kW 15 22 ton all compressor models NOTES 1 Drawing not to scale 2 Tolerance on all piping dimensions is 1 2 13mm Field routed alternatives for water glycol 35 connections 889mm 2 7 8 See submittal page DPNO01191 for 73mm blower outlet and deck dimensional data 3 1 2 89mm WILLLL LLL kk All dimensions from rear corner of unit including panels Blower Outlet Blower Outlet fo 109 2769mm TOP VIEW OF UNIT Front of Unit o CGD FRONT SECTION VIEW OF UNIT LEFT SIDE SECTION VIEW OF UNIT A dal Xx Y Connection Size Opening Point Description inches mm inches mm inches mm W1A Water Glycol GLYCO
29. 99 Piping Schematics Figure 73 Piping schematic water glycol with digital scroll compressor models EXPANSION TANK Optional Dual Pump System shown LIEBERT HEAT REJECTION CUSTOMER HEAT REJECTION GLYCOL Check Valves on Dual Pump DRYCOOLER Y Systems only Glycol COOLING TOWER AND PUMP SYSTEM BY OTHERS Aquastat Gate Valves Sensing Bulbs Pressure Port in I Air Vents typical l i Bib Shut Off Valve L gt t re E i i RETURN SUPPLY Shut Off Valve H 088 Pressure Port Flow Switch Supplied with Dual Pump Systems Flow Regulating Valve ra a a SUPPLY LIEBERT DS UNIT and associated piping LIQUID HOTGAS REHEAT gt 1 eL Optional 3 Way A Motorized Ball Shut Off Valve Shut Off Valve Valve PS 4 a E y en Hose Bib a Oa hos e EVAPORATOR yy 7 N 2 Way XN ye Check Valve Motorized Ball Valve External Valve COMPRESSOR Equalizer From iCOM Control DISCHARGE PARADENSER CONDENSER To iCOM Control Expansion Solenoid Sight Valve Valve Glass Pressure Relief valve s supplied Transducer with 50 Hz EU CE units rated maximum 480 PSIG 33 Bar Filter Drier TO SECOND REFRIGERATION CIRCUIT NOTE TWO REFRIGERATION CIRCUITS PROVIDED SINGLE REFRIGER
30. DD ASS Fee 79 8 1 1 VSD Power Supply Field Adjustment May Be Required 0 0 0 cece eens 79 8 1 2 Wye Connected Power Supply 79 8 1 3 Delta Connected Power Supply 80 PIPING ori e a MD ee da A E Re ios 82 Fluid Connections ada e TAS 2 OS ee a a a E 82 9 1 1 Condensate Piping Field Installed oooooooocooooooo ooo 82 9 1 2 Humidifier Supply Water Optional Infrared 0 0 00 ees 84 9 1 3 Humidifier Supply Water Optional Steam Generating 0 0000 cee eens 84 9 1 4 Requirements of Systems Using Water or Glycol 0 0 0 00 ccc eens 84 Refrigeration Pipa 85 9 2 1 Piping Guidelines Air Cooled Units 86 9 2 2 Scroll and Digital Scroll Additional Oil Requirements 20 0 00 cece eens 88 Dehydration Leak Test and Charging Procedures for R 407C and R 22 89 9 3 1 Air Cooled Condenser with Variable Fan Speed Head Pressure Control Systems 89 9 3 2 Air Cooled Condenser with Liebert Lee Temp Flooded Condenser Head Pressure Control Systeme A Sie Bat Oo he td ho he Ga ae eee Shee Be 91 9 3 8 Water Glycol Cooled System 93 PIPING SCHEMATICS 4054 60 otalswia die ctex wares weeded inves ev a daca 94 CHECKLIST FOR COMPLETED INSTALLATION 000 eee eee eee eee eee eee 124 Moving and Placing Equipment 124 Electrica 2s i E ES i achat a Oe PG BG acd tls PONDS GA Tae 124 Piping A BR RE AE BOR DEK CORES SOE AS OREN 124 UIC a eT es wana aa es arn hk ees coe as ge
31. Evaporator Coil 12 Condensate Pump optional 5 Motor 13 Smoke Sensor optional 6 Blower 14 Condenser Cleanout Plugs fluid cooled units only 7 Fan Pulley 15 Condenser Drain Plugs fluid cooled units only 8 Motor Sheave and Belts 16 Econ O Coil Valve GLYCOOL Dual Cooling 17 Variable Frequency Drive optional on Digital Scroll units only DPN001222 Rev 1 Liebert DS Components and Nomenclature Figure 3 Liebert DS model number nomenclature 1 2 3 4 5 6 7 8 D S 0 3 5 A U A 0 E I Air Distribution Factory Configuration DS Downflow Standard Number VS Upflow Standard Nominal kW 028 035 042 053 Humidification 070 077 105 A oe Infrare Cooling Type S Steam Generating A Air Cooled Canister D Dual Cooling Air Cooled W Water Glycol K GLYCOOL Reheat Type H Dual Cooling Water Glycol a m i Three stage electric Compressor Type S SCR U Semi hermetic with four step R 407C W Hot water S Scroll R 407C D Digital Scroll R 407C Voltage M Semi hermetic A 460 3 60 Fan Type R ie ieee B 575 3 60 0 Centrifugal fans G Digital Scroll R 22 es 0360 1 Electrically Commutated fans 2 380 3 60 J 200 3 50 M 380 415 3 50 Cooling Configurations 2 0 COOLING CONFIGURATIONS NOTE All field installed piping must comply with applicable local state and federal codes Air Cooled Glycol Cooled Air cooled unit piping
32. Liebert DS for Transport Figure 45 Component dimensions downflow water glycol GLYCOOL 28 42kW 8 12 ton all compressor models Drawing views are simplified with panels removed to show overall dimensions See disassembly and handling instructions in installation manual YQ Y W D n sy Y 5 gt Filter amp Electric Box Assembly PYR LY g 76 Compressor Assembly Blower amp Coil 1930mm Assembly es HN Assembled i piii Y Height ica a 7e pull coe 1930mm Y em 1529mm Exp l Etre y 37 MN ld f Alle 2 i il eee ves ple LL 59 1499mm 838mm 85 2159mm DPN000899 Assembled Length Rev 1 Table 31 Component weights downflow water glycol GLYCOOL 28 42kW 8 12 ton all Dry Weight Approximate Including Panels Ib kg Semi Hermetic Compressor Scroll or Digital Scroll Compressor Component Water Glycol GLYCOOL Dual Cool Water Glycol GLYCOOL Dual Cool Compressor Assembly 950 432 950 432 800 364 800 364 Filter amp Electric Box Assembly 210 96 210 96 210 96 210 96 Blower amp Coil Assembly 770 350 920 418 770 350 920 418 57 Disassembling the Liebert DS for Transport Figure 46 Component dimensions downflow air cooled 53 77kW 15 22 ton semi hermetic compressor models forward curved and EC fan y ab DA N N SN Y
33. Low Volt 2 51 27 1 2 796 7 8 LV2 Electrical Conn Low Volt 2 51 30 1 4 768 7 8 LV3 Electrical Conn Low Volt 2 51 32 813 7 8 B1 Blower Outlet 28 1 4 718 18 457 14 1 2 x 15 7 8 368 x 403 B2 Blower Outlet 52 1321 18 457 14 1 2 x 15 7 8 368 x 403 B3 Blower Outlet 75 11 16 1922 18 457 14 1 2 x 15 7 8 368 x 403 Field pitch condensate drain line a minimum of 1 8 3 2 mm per foot 305 mm All units contain a factory installed condensate trap Do not trap external to the unit Drain line may contain boiling water Select appropriate drain system materials The drain line must comply with all local codes Supplied on Dual Cooling systems only 4 piping system 114 Piping Schematics Figure 88 Primary connection locations downflow water glycol GLYCOOL 105kW 30 tons all compressor models with EC fan A A Note Drawing not to scale FRONT VIEW Tolerance on all piping dimensions is 1 2 13mm All dimensions from rear corner of unit including panels SECTION A A BLOWER OUTLET ECS ECR a o O Oo Os o Er EZ HUM FRONT OF UNIT 132 3353mm DPNO002153 Rev 0 X Y Connection Size Opening Point Description in mm in mm in mm W Water Glycol GLYCOOL Access 125 15 16 3199 9 229 3 1 2 89 X 8 203 WS Water Glycol GLYCOOL Supply 127 7 8 3248 10 1 16 256 2 1 8 Cu Sweat WR Water Glycol GL
34. Optional Dual Pump System Shown Liebert Expansion Customer Heat Rejection Heat Rejection Tank Glycol Pumps Check Valves osa pressure P IP on Duar Pump Footin Tower Glycol Aquastat Port EX EX X e and Pump Sensing Gate Valves System by 4 Bulb H Others E r7 OSS Shutoff Valve 1 Ait Vents Pressure Port T 2 J typical f 1 h cae Flow Switch a Supplied with Dual Pump Systems Flow Regulating Return Supply T Valve Liebert DS Unit and associated piping Optional 3 Way Son Valve Sensing Evaporator Regulating Bulb Coil Compressor External i Regulatin Muffler Service Equalizer g g i Valve Discharge Valve Paradenser ME Valve Condenser gt nor gt lt PN Expansion eee Valve Relief valve s Sensor supplied with50Hz Solenoid EU CE units rated To Second Valve Filter maximum 480 PSIG Refrigeration Dryer 33 Bar Circuit Factory Piping Components are not supplied by Field Piping Liebert but are recommended for Optional Factory Piping proper circuit operation and maintenance V Service Schrader Access Connection No Valve Core ss Field installed at highest point y Service Schrader Access Connection With Valve Core In system on return line to pumps Note Schematic representation shown This schematic does not imply or define elevations Locate at tops of all pane and any and component location unless specifi
35. Risk of top heavy unit falling over Improper handling can cause equipment damage injury or death Read all instructions before attempting to move or lift unit Installation and service of this equipment should be done only by properly trained and qualified personnel who have been specially trained in the installation of air conditioning equipment CAUTION Risk of sharp edges and heavy parts Can cause personal injury Only properly trained and qualified personnel wearing appropriate safety headgear gloves shoes and glasses should attempt to move lift remove packaging from or prepare unit for installation CAUTION Risk of handling heavy and lengthy parts Can cause personal injury and equipment damage Cabinet panels can exceed 5ft 1 5m in length and weigh more than 35lb 15 9kg Follow relevant OSHA lifting recommendations and consider using a two person lift for safe and comfortable removal and installation of cabinet panels Only properly trained and qualified personnel wearing appropriate safety headgear gloves and shoes should attempt to remove or install cabinet panels NOTICE Risk of improper disassembly Can cause equipment damage Disassembling this unit requires substantial work including reclaiming refrigerant and charging the unit cutting and brazing refrigerant lines cutting and brazing water lines disconnecting and reconnecting electrical lines and moving heavy bulky equipment One member of the crew dis
36. Thermistor COIL 3 Way Chilled Glycol Valve Valve External Valve COMPRESSOR DISCHARGE Paradenser Condenser Valve Filter Dryer Pressure Port a AA Shutoff Valve 3 Way Regulating Optional Dual Pump System shown GLYCOL PUMPS Check Valves on Dual Pump I Systems only xX Gate Valves Air Vents typical Pressure Port Flow Switch Supplied with Dual Pump Systems Flow Regulating i Valve ee e RETURN SUPPLY Shutoff Valve Shutoff Valve t Hose l Bib Hose Bib Expansion Solenoid Sight Valve Valve Sensor Glass Relief valve s supplied with 50 Hz EU CE units rated TO Second maximum 480 PSIG 33 Bar Refrigeration Circuit NOTE Two refrigeration circuits provided Single refrigeration circuit shown for clarity FIELD PIPING FACTORY PIPING V SERVICE SCHRADER ACCESS CONNECTION WITH VALVE CORE y SERVICE SCHRADER ACCESS CONNECTION NO VALVE CORE NOTE Schematic representation shown This schematic does not imply or define elevations and component location unless specifically noted Components are not supplied by Liebert but are recommended for proper circuit operation and maintenance Field installed at highest point in system on return line to pumps Locate at tops of all risers and any intermediate system high points DPN000898 REV 3
37. available on some Liebert DS models The VSD reduces power consumption by reducing the blower speed to match the unit s load This packaged unit is factory set and should not require field adjustment A WARNING Risk of contact with nearby high speed moving parts Can cause injury or death Do not attempt to adjust or view variable frequency drive settings at the display on the face of the VSD Instead use a remote display Liebert service item part number 196632P1 and connect to the VSD remote cable in the extra low voltage electric panel NOTICE Risk of improper program adjustment Can cause equipment damage and loss of warranty The VSD is factory programmed for proper operation Altering the VSD program without authorization from the factory may void the warranty NOTE Emerson requires the Liebert DS to have a grounded supply The VSD may be damaged if it is operated on an ungrounded supply VSD Power Supply Field Adjustment May Be Required The installer startup technician must determine the type of three phase supply power Wye connected or Delta connected being used at the building power distribution panel for the VSD controlled unit NOTICE Risk of mismatched input power supply and VSD requirements May cause equipment damage and failure The EMC filter must be removed from the VSD if the power supply is Delta connected Wye Connected Power Supply No control changes are required if the Liebert VSD Control u
38. dimensions upflow air cooled 53 77kw 15 22 ton semi hermetic compressor models Drawing views are simplified with panels removed to show overall dimensions See disassembly and handling instructions in installation manual Blower amp Electric Box Assembly 31 1 4 794mm ba 76 1930mm Assembled Filter amp Coil Assembly Height 45 13 16 1163mm 1 82 2083mm 108 2743mm Assembled Length DPN001209 76 1930mm Rev 0 Table 41 Component weights upflow air cooled 53 77kw 15 22 ton semi hermetic compressor models Dry Weight Approximate Including Panels Ib kg Component Air Cooled Dual Cool Compressor Assembly 970 441 970 441 Blower amp Electric Box Assembly 770 349 770 349 Filter amp Coil Assembly 760 345 940 426 70 Disassembling the Liebert DS for Transport Figure 56 Component dimensions upflow air cooled 53 77kw 15 22 ton scroll digital scroll compressor models Drawing views are simplified with panels removed to show overall dimensions See disassembly and handling instructions in installation manual Blower amp Electric Box Assembly 31 1 4 794mm Compressor Assembly 76 1930mm Assembled Filter amp Coil Height Assembly 76 1930mm 45 13 16 1163mm les 33 al 15 Fe E 82 2083mm 838mm 381mm DPNO01210 97 2464mm Assembled Length Rev 0 Table 42
39. during the initial startup to verify that the three phase power is connected properly The rotation direction of EC blowers is not a reliable indicator of proper connection The blowers will rotate the same direction regardless of the three phase power input Check Main Fan amps and record L1 L2 L3 Fuse Increase temperature setpoint to energize reheats Check and record amperage 1 2 3 Fuse Increase humidity setpoint to energize humidifier Check and record amperage L1 L2 L2 L3 L1 L3 Infrared Check water level and adjust high limit float for proper operation If condensate pump has been supplied check for proper operation Chilled water and Econ O Coil GLYCOOL only a Decrease temperature setpoint to energize valve motor Check for full valve travel in cooling mode b Adjust controls out of cooling mode Check for valve closure Decrease humidity setpoint to call for dehumidification Check for valve travel in dehumidification mode Decrease temperature setpoint to energize compressor s Check and record compressor amps 1 L1 L2 L3 Fuse 2 L1 L2 L3 Check compressor operating pressure and record Check digital compressors fully loaded position Suction Pressure 1 2 Discharge Pressure 1 2 Sight Glass clear 1 2 some flashing may occur with system fluctuations and or R 407c blend refrigerants Sight Glass dry 1 2 Check compressor oil sight glass should be 1 2 to 3
40. electrical connections can be made from top or bottom of unit Air Inlet Opening orar Pening 3 4 Bezels j 19mm Secondary Entrance Low Volt Connections Secondary Entrance er 7 High Volt Connection s Top View Minimum required for filter replacement 109 2769mm i Seen 1 Shaded area indicates a Front View recommended minimum o 108 clearance for component DPN000924 51mm 2743mm yaccess Rev 2 Table 6 Weights for downflow air cooled 53 77kW 15 22 ton semi hermetic compressor models Dry Weight Ib kg Approximate Model 053 070 077 Air Cooled 2350 1069 2400 1091 2450 1114 Dual Cool 2530 1150 2580 1173 2630 1196 Liebert DS Dimensions and Weights Figure 10 Cabinet and floor planning dimensions downflow air cooled 53 77kW 15 22 ton scroll compressor models Secondary Refrigerant Piping Entrance Notes Filters are accessible 80 Opening only through top of unit 2032mm Downflow electrical connections can be made a from top or bottom of unit 24 5 8 fae 625mm 889mm Opening ee 19mm Bezels Minimum required Secondary Entrance Top View Secondary Entrance for filter replacement Low Volt Connections 98 2489mm High Volt Connection s 76 1930mm Shaded area indicates a 2 97 recommended minimum 51mm 2464mm clearance for component es DPN000925 Front View Rev
41. factory if piping run exceeds 150 feet 46m equivalent length Keep piping clean and dry especially on units with R 407C refrigerant Avoid piping runs through noise sensitive areas Do not run piping directly in front of airstream Refrigerant oil do not mix oil types see 13 10 1 Compressor Oil Refer to ASHRAE Refrigeration Handbook for general good practice refrigeration piping Table 49 Recommended refrigerant line sizes OD copper inches Standard Scroll Models Non Digital Scroll Model 028 035 042 053 070 077 105 Equivalent Gas Liquid Gas Liquid Gas Liquid Gas Liquid Gas Liquid Gas Liquid Gas Liquid Length Line Line Line Line Line Line Line Line Line Line Line Line Line Line 50 ft 15m 7 8 1 2 7 8 1 2 7 8 1 2 7 8 5 8 1 1 8 7 8 1 1 8 7 8 1 3 8 7 8 Hot Hot Hot Hot Hot Hot Hot 100 ft 30m 7 8 5 8 7 8 5 8 7 8 5 8 1 1 8 7 8 1 1 8 7 8 1 1 8 7 8 1 3 8 7 8 150 ft 45m 7 8 5 8 7 8 5 8 7 8 5 8 1 1 18 7 8 1 1 18 7 8 1 1 8 7 8 1 3 8 1 1 8 4 Step Semi Hermetic and Digital Scroll Models Model 028 035 042 053 070 077 105 Equivalent Gas Liquid Gas Liquid Gas Liquid Gas Liquid Gas Liquid Gas Liquid Gas Liquid Length Line Line Line Line Line Line Line Line Line Line Line Line Line Line 50 ft 15m 3 4 1 2 3 4 1 2 7 8 5 8 7 8 7 8 1 1 8 7 8 1 1 8 7 8 1 3 8 7
42. fan Note Drawing not to scale A Tolerance on all piping dimensions is 1 2 13mm FRONT VIEW SECTION A A All dimensions from rear corner of unit including panels R yY 889mm L12 3 16 310mm ECS ECR D Oon g E1 E2 HUM FRONT OF UNIT 98 2489mm DPN002182 Rev 0 X Y Connection Size Opening Point Description in mm in mm in mm R Refrigerant Access 81 3 4 2076 14 3 4 374 12 3 16 310 X 4 102 53kW 15 Tons 70 amp 77kW 20 amp 22 Tons L1 Liquid Line System 94 11 16 2405 16 3 4 425 1 2 5 8 Cu Sweat L2 Liquid Line System 2 91 7 8 2334 16 3 4 425 1 2 5 8 Cu Sweat G1 Hot Gas Discharge 1 88 3 4 2254 16 3 8 416 7 8 1 1 8 Cu Sweat G2 Hot Gas Discharge 2 85 9 16 2173 16 3 8 416 7 8 1 1 8 Cu Sweat ES ero Hunn 68 3 8 1737 31 3 8 797 3 4 FPT W Optional Pump 68 3 8 1737 31 3 8 797 1 2 Cu Sweat HUM Humidifier Supply Line 76 1 2 1943 29 736 1 4 Cu Sweat ECS Econ O Coil Supply 78 5 8 1997 22 1 4 565 2 1 8 Cu Sweat ECR Econ O Coil Return 73 15 16 1862 26 9 16 675 2 1 8 Cu Sweat HS Hot Water Reheat Supply CONSULT FACTORY HR Hot Water Reheat Return CONSULT FACTORY El Electrical Conn High Volt 78 1 2 1994 31 1 8 790 2 1 2 E2 Electrical Conn High Volt 75 3 8 1915 31 1 8 790 2 1 2 LV1 Electrical Conn Low Volt 2 51 29 737 7 8 LV2 Electrical Conn Low Volt 2 51 30 7
43. for proper support and proper connection 2 3 Check unit belts for correct tension and alignment 4 Check unit electrical connections including and Mate N Loc connections to the control boards and tighten or secure if needed 5 Remove all debris tools and documents from unit area 12 2 1 Inspect and Record Main Fan hp Voltage Proper Belt Tension and Alignment Belt Size Motor Sheave Fan Pulley EC Plug Fan Assemblies Tight and Secured check one Fan secured in UP position Fan secured in Down position Filter Size Quantity Piping Size Air Cooled Only Discharge Liquid ___ Piping trapped according to installation manual air cooled Total Equivalent Length for Discharge and Liquid Piping 1 Compressor Model 1 Compressor Serial 2 Compressor Model 2 Compressor Serial 127 Initial Startup Checks and Commissioning Procedure for Warranty Inspection 12 3 Startup 1 2 10 11 12 13 14 15 16 17 18 19 20 21 Turn On the Main Disconnect Check voltage at disconnect and record L1 L2 L2 L3 L1 L3 Check control voltage transformers for proper output Secondary voltage s should not exceed 27VAC under load Change tap if necessary T1 Volts Check fan rotation for proper direction Change wiring at contactor if necessary Service technicians should use a gauge set on the Liebert DS system
44. included in this manual These MINIMUM maintenance intervals may need to be more frequent based on site specific conditions See the Liebert COM user manual SL 18835 for instructions on how to utilize the unit controller to predict some service maintenance intervals Emerson recommends the use of trained and authorized service personnel extended service contracts and factory specified replacement parts Contact your local Emerson representative 130 Maintenance 13 1 Filters NOTICE Risk of improper filter installation and filter collapse Can cause equipment damage Pleat direction is non standard Use only short pleat filters see Figure 97 Long pleat filters are subject to collapse at high airflows To maximize the performance and reliability of Liebert DS equipment use only Liebert filters Contact your local Emerson representative to order replacement filters Table 59 Filter quantities downflow units Filter Quantities Filter Size 4 Filter Option 2 Primary 2 Pre Filter Option Unit Size Width x Length Merv 8 or Merv 11 Merv 11 Primary Filter Merv 7 Pre Filter DS 028 035 042 5 5 5 DS 053 070 077 16 x 25 7 7 7 DS 105 9 9 9 Table 60 Filter quantities upflow units Filter Quantities Filter Size 2 Primary 2 Pre Filter Option Upflow Models Width x Length 4 Filter Option Merv 8 or Merv 11 Merv 11 Primary Merv 7 Pre Filter VS025 035 042 4 4 4 V
45. jack support are shipped loose and are intended to be placed into position DPN002151 under each fan and used to lower or raise that fan as needed Leveling feet are provided with 1 1 2 88mm adjustment from nominal height C REV 0 Table 21 Floor stand and floor planning dimensions downflow 53 77kW 15 22 ton models with EC fans Height Dimension C in mm 24 610 30 762 36 914 42 1067 48 1219 Liebert DS Dimensions and Weights Figure 25 Floor stand dimensions downflow 105kW 30 ton models 132 1 2 3366mm with feet 131 3327mm 91 3 4 4 1 2 i 2330mm 114mm wel ECAN i with feet LLL IIL 838mm 1 25mm TYP Supply air discharge opening Gussets supplied on floor stands 12 305 mm tall and greater PIII DT 7 8 TAZA ad Optional turning vane eL a shown as front air discharge o dj E Turning vane air outlet Optional turning vane can be field installed in supply air discharge opening for front or rear air discharge Right side of paneled unit is flush with right side of floor stand All other paneled sides overhang floor stand 1 25mm Leveling feet are provided with 1 1 2 38mm DPN001059 adjustment from nominal height C REV 1 Table 22 Floor stand and floor planning dimensions downflow 105kW 30 ton models Height i
46. load Use field supplied Class 1 wiring OPTIONAL LOW VOLTAGE TERMINAL PACKAGE CONNECTIONS 21 Remote unit shutdown Two additional contact pairs available for unit shutdown labeled as 37B amp 38B 37C amp 38C Replace jumpers with field supplied normally closed switch having a minimum 75VA 24VAC rating Use field supplied Class 1 wiring 22 Common alarm On any alarm two additional normally open dry contacts are closed across Terminals 94 amp 95 and 96 amp 97 for remote indication 1A 24VAC max load Use Class 1 field supplied wiring 23 Main fan auxiliary switch On closure of main fan contactor normally open dry contact is closed across Terminals 84 amp 85 for remote indication 1A 24VAC max load Use field supplied Class 1 wiring 24 Liebert Liqui tect shutdown and dry contact On Liebert Liqui tect activation normally open dry contact is closed across Terminals 58 amp 59 for remote indication Liebert Liqui tect sensor ordered separately 1AMP 24VAC max load Use field supplied Class 1 wiring DPN000807 Rev 2 Refer to specification sheet for total unit full load amps wire size amps and maximum overcurrent protective device size 78 Electrical Connections 8 1 Variable Speed Drive A WARNING Risk of electric shock from leakage current Can cause injury or death Reconnect earth ground if servicing or replacing the variable speed drive VSD An optional Variable Speed Drive VSD is
47. loose 4 Repeat for remaining feet and recheck all when done 5 4 Placing the Unit on a Floor Stand Liebert Floor Stand Ensure that the optional turning vane is installed in the floor stand if included prior to placing the unit Refer to the floor stand installation sheet 182278P1 located inside the floor stand package Lower the unit onto the floor stand Refer to Detail A in Figure 38 Be sure to align the welded tabs on top of the floor stand with the inside of the unit frame base Figure 38 Setting the unit on a floor stand Welded Tab DETAIL A Liebert Floor Stand front discharge shown NOTE The floor stand for Liebert DS units equipped with EC fans is not symmetrical Its orientation to the Liebert DS unit is critical for lowering the EC fans Unless the floor stand is installed in the correct position shown in Figures 24 and 26 the fans will not lower into the floor stand 43 EC Fans Lowering and Removing 6 0 EC FANS LOWERING AND REMOVING 6 1 Liebert DS downflow models DS053 DS070 DS077 and DS105 can be equipped with EC fans that can be operated either in their fully raised position or lowered into the floor stand for increased efficiency from reduced air resistance The fans are also removable easing maintenance and replacement A A 4 WARNING Risk of electric shock and high speed rotating fan blades Can cause injury or death Disco
48. power ensure that the EMC filter has been disconnected see 8 1 Variable Speed Drive for details ___ 12 Check for loose electrical connections on steam generating humidifier Confirm that electrode plugs are pressed firmly onto the electrode pins 11 3 Piping 1 Piping completed to refrigerant or coolant loop if required 2 Piping has been leak checked evacuated and charged if required 3 Additional oil has been added for system charges over 40 pounds 18 1kg per circuit see 9 2 2 Scroll and Digital Scroll Additional Oil Requirements 4 Piping is properly sized sloped and trapped as shown in the piping schematics Check piping inside and outside of equipment for proper supportand adequate spacing to prevent rub through 6 Ensure TXV equalizer lines and sensing bulb lines have sufficient clearance and do not rub against other refrigerant lines Ensure that factory clamps have been reinstalled Drain line connected and pitched per local code Water supply line connected to humidifier 124 Checklist for Completed Installation 11 4 Other ll 10 Ducting complete if required maintain access to filters Filters installed Check fasteners that secure compressors reheats humidifier and motors some may have become loose during shipment Verify water detection is properly installed around all units recommended Control panel DIP switches are set based on user requirements Blower dr
49. reverse procedure should be followed to install a new cylinder The main electrical disconnect is to be left open until the cylinder is completely installed and reconnected 2 The blue sensor plug on all units is for the high water sensor pin which always goes on the single pin with collar offset from the others See Figure 105 3 Ensure that cylinder plugs are snug on the pins Replace any loose fitting plugs as these may result in hazardous operation Figure 105Canister plugs High Water Sensor Pin 38 Cylinder O Cylinder Pin Y Pin Q Cylinder Pin A WARNING Risk of humidifier canister meltdown smoke and fire Can cause fire suppression system activation fire and smoke alarm activation equipment or serious building damage injury and death Check steam generating humidifier electrode plugs to ensure that they are pressed firmly onto pins Loose connections will cause overheating of cylinder and plugs 141 Maintenance Table 62 Steam generating humidifier status lamps causes corrective action Unit Status Lamp Yellow Green Symptom Corrective Actions This usually happens on initial startup after replacing the cylinder Maximum water level normal On On inside cvlifidar Water is concentrated with minerals inside the cylinder y i Let unit run yellow light will disappear when the unit is at full output This may take a day or two Check for main power supply fault Turn p
50. the drive s location on downflow units see Figure 2 for the location on upflow units Remove electrical junction box cover Using Figure 64 locate the small black plastic tab immediately to the right of the wiring connection block of the VFD control Pull the tab to fully extend it disconnecting the EMC filter from the circuit Reinstall the electrical junction box cover 80 Electrical Connections Figure 64 Disconnecting EMC filter for operation with Delta connected power size C amp D inverters Internal EMC filter Tab fully inserted EMC filter fitted Internal EMC filter Tab fully extended EMC filter disconnected DPN001946 Rev 0 Remove EMC Filter for Delta Connected Power for Type 2 inverters The EMC filter on the VSD must be disconnected if the Liebert VSD control DS unit will be operated with Delta connected power NOTE This procedure requires substantial work 1 Disconnect the power supply before working on the unit Locate the VSD refer to Figure 1 for the drive s location on downflow units see Figure 2 for the location on upflow units 3 Remove inverter assembly Follow instructions in 13 2 4 Electronic Variable Speed Drive Inverter 4 Loosen and remove the screws as shown 1 in Figure 65 and 2 in Figure 65 5 Remove filter 3 in Figure 65 6 Reinsert and tighten the screws removed in Step 4 Figure 65 Figure bb Disconnecting EMC filter for operation with Delta co
51. treatment specialist before startup to establish the inhibitor requirement The water or water glycol solution must be analyzed every six months to determine the pattern of inhibitor depletion The complexity of water caused problems and their correction makes it important to obtain the advice of a water treatment specialist and follow a regularly scheduled maintenance program Liebert DS Components and Nomenclature 1 0 LIEBERT DS COMPONENTS AND NOMENCLATURE Figure 1 Downflow model component locations 17 1 Liebert iCOM 10 Infrared Humidifier optional 18 18 2 Electric Box 11 Disconnect optional 3 Filters 12 Condensate Pump optional 4 Evaporator Coil 13 Smoke Sensor optional 5 Motor 14 Condenser Cleanout Plugs fluid cooled units only 6 Blower 15 Condenser Drain Plugs fluid cooled units only 7 Fan Pulley 16 Econ O Coil Valve GLYCOOL Dual Cooling 8 Motor Sheave and Belts 17 Variable Frequency Drive optional on 9 Compressor Section digital scroll units only DPN000958 18 EC Fans optional Rev 3 Liebert DS Components and Nomenclature Figure 2 Upflow model component locations 1 Liebert iCom Control Display 9 Compressor Section 2 Electric Box 10 Infrared Humidifier optional 3 Filters 11 Disconnect optional 4
52. unit Do not operate unit with any or all cabinet panels removed Do not operate upflow units without installing a plenum ductwork or guard over the blower opening s on the top surface of the unit cabinet Ductwork must be connected to the blower s or a plenum must be installed on the blower deck for protection from rotating blower wheel s on upflow units A CAUTION Risk of contact with hot surfaces Can cause injury The compressors refrigerant discharge lines humidifiers and reheats are extremely hot during unit operation Allow sufficient time for them to cool before working within the unit cabinet Use extreme caution and wear protective gloves and arm protection when working on or near hot compressors discharge lines humidifiers and reheats CAUTION Risk of handling heavy and lengthy parts Can cause personal injury and equipment damage Cabinet panels can exceed 5ft 1 5m in length and weigh more than 35lb 15 9kg Follow relevant OSHA lifting recommendations and consider using a two person lift for safe and comfortable removal and installation of cabinet panels Only properly trained and qualified personnel wearing appropriate safety headgear gloves and shoes should attempt to remove or install cabinet panels NOTE The Liebert indoor cooling unit has a factory installed high pressure safety switch in the high side refrigerant circuit A pressure relief valve is provided with Liebert Lee Temp condensers
53. 0 0 ccc eee n teens Locate center of gravity marker and place slingS 0 0 cece eee nes Figure 37 Figure 38 Figure 39 Figure 40 Figure 41 Figure 42 Figure 43 Figure 44 Figure 45 Figure 46 Figure 47 Figure 48 Figure 49 Figure 50 Figure 51 Figure 52 Figure 53 Figure 54 Figure 55 Figure 56 Figure 57 Figure 58 Figure 59 Figure 60 Figure 61 Figure 62 Figure 63 Figure 64 Figure 65 Figure 66 Figure 67 Figure 68 Figure 69 Figure 70 Figure 71 Using rigging to lift Liebert DS off skid 0 0 ooo Setting the unit on a floor stand 1 0 eee eee nent eens Lowering EC fans into floor stand Steps 1 through6 0 0 ees Lowering EC fans into floor stand Steps 7 through 9 0 0 ccc cc ees Removing the EC fans Steps 1 through 5D Removing the EC fans Steps 6 through 9 Component dimensions downflow air cooled 28 42kW 8 12 ton semi hermetic compressor Oelse i Component dimensions downflow air cooled 28 42kW 8 12 ton scroll digital scroll compressor Models ic a A iaa Component dimensions downflow water glycol GLYCOOL 28 42kW 8 12 ton all Compressor Models ii e a E is id Be Rese bea RS Component dimensions downflow air cooled 53 77kW 15 22 ton semi hermetic compressor models forward curved and ECfaD o o o oooooooooccoorr eens Component dimensions downflow air cooled 53 77kW 15 22 ton scroll digital scroll compressor models
54. 0 1114 2500 1137 16 Liebert DS Dimensions and Weights Figure 12 Cabinet and floor planning dimensions downflow air cooled 105kW 30 ton all compressor models Secondary Refrigerant Notes Filters are accessible Piping Entrance only through top of unit 102 13 16 26 11mm Downflow electrical Opening connections can be made from top or bottom of unit 24 3 8 Air Inlet Opening 619mm mm Opening i 3 4 Bezels Top View 19mm Secondary Entrance Secondary Entrance High Volt Connection s Low Volt Connections Minimum required A lt lt 3353mm EA for filter replacement 76 1930mm Front View Shaded area indicates a 131 3327mm recommended minimum clearance for component m ev access Table 9 Weights for downflow air Cooled 105kW 30 ton all compressor models Dry Weight Ib kg approximate Model 105 Compressor Type Fan Type Forward Curved Fans EC Fans Air Cooled 3040 1382 2774 1258 Semi Hermetic Compressor Dual Cool 3400 1545 3134 1422 Air Cooled 2920 1327 2654 1204 Scroll Compressor Dual Cool 3280 1491 3014 1367 Liebert DS Dimensions and Weights Figure 13 Cabinet and floor planning dimensions downflow water glycol GLYCOOL 105kW 30 ton all compressor models Condenser Cleanout Access 102 13 16 2611mm Opening Notes Filters are accessi
55. 0 Re mount the VSD on the unit shoulder or on the unit floor 11 Reinstall the right panel 12 Engage power to the unit disconnect e OL Blower Drive System EC Fans Fan Impellers and Bearings Fan impellers should be periodically inspected and any debris removed Check to ensure that the impellers can rotate freely and that the fan guards are still properly mounted for sufficient protection against accidentally contacting the impeller Bearings used on the units are maintenance free Con sult the factory for more information Protective Features Monitoring functions protect the motor against overtemperature of electronics overtemperature of motor and incorrect rotor position detection With any of these failures an alarm will display through the Liebert COM and the motor stops electronically There is no automatic restart The power must be switched off for a minimum of 20 seconds once the motor is at a standstill The motor also provides locked rotor protection undervoltage phase failure detection and motor cur rent limitation These conditions will display an alarm through the Liebert iCOM A WARNING Risk of electric shock Can cause injury or death Disconnect all local and remote electrical power supplies before working within the unit When connecting the motor to input power dangerous voltages occur Do not open the motor within the first 5 minutes after disconnection of all phases 135 Maintenance 13 4
56. 1429 11 1 8 283 1 2 Cu Sweat HUM Humidifier Supply Line 56 1 4 1429 9 1 8 233 1 4 Cu Sweat ECS Econ O Coil Supply 56 1423 7 5 16 186 1 5 8 Cu Sweat ECR Econ O Coil Return 56 1423 4 1 2 114 1 5 8 Cu Sweat El Electrical Connection High Voltage 52 3 8 1330 30 762 2 1 2 E2 Electrical Connection High Voltage 46 7 8 1191 30 762 2 1 2 LV1 Electrical Connection Low Voltage 19 1 2 495 29 1 16 738 7 8 LV2 Electrical Connection Low Voltage 19 1 2 495 30 1 2 775 7 8 LV3 Electrical Connection Low Voltage 19 1 2 495 31 15 16 811 7 8 Field pitch condensate drain line a minimum of 1 8 3 2 mm per foot 305 mm All units contain a factory installed condensate trap Do not trap external to the unit Drain line may contain boiling water Select appropriate drain system materials The drain line must comply with Supplied on Dual Cool systems only 4 pipe system all local codes 116 Piping Schematics Figure 90 Primary connection locations upflow air Cooled 28 42kW 8 12 ton semi hermetic compressor models All dimensions from NOTES 1 8 rear corner of unit including panels X O 1 Drawing not to scale 2 Tolerance on all piping dimensions is 1 2 13mm Field routed alternatives for refrigerant gas and liquid line connection points See submittal page DPN001120 for blower outlet and de
57. 17 3 16 152 x 437 WSA Water Glycol GLYCOOL Supply 1 5 8 Cu Sweat WRA Water Glycol GLYCOOL Return 1 5 8 Cu Sweat CGD Condensate Gravity Drain 3 4 FPT CPD Condensate Pump Discharge Opt 56 1 4 1429 11 1 8 282 1 2 Cu Sweat HUM Humidifier Supply Line 56 1 4 1429 9 1 8 232 1 4 Cu Sweat ECS Econ O Coil Supply 56 1423 7 5 16 186 1 5 8 Cu Sweat ECR Econ O Coil Return 56 1423 4 1 2 114 1 5 8 Cu Sweat E1 Electrical Connection High Voltage 52 3 8 1330 30 762 2 1 2 E2 Electrical Connection High Voltage 46 7 8 1191 30 762 2 1 2 LV1 Electrical Connection Low Voltage 19 1 2 495 29 1 16 738 7 8 LV2 Electrical Connection Low Voltage 19 1 2 495 30 1 2 775 7 8 LV3 Electrical Connection Low Voltage 19 1 2 495 31 15 16 811 7 8 Field pitch condensate drain line a minimum of 1 8 3 2 mm per foot 305 mm All units contain a factory installed condensate trap Do not trap external to the unit Drain line may contain boiling water Select appropriate drain system materials The drain line must comply with all local codes Supplied on Dual Cool systems only 4 pipe system 118 Piping Schematics Figure 92 Primary connection locations upflow air cooled 53 77kW 15 22 ton semi hermetic compressor models All dimensions from rear corner of unit x O including panels NOTES Blower Blower 1 Drawing not to scale g Outlet Outlet 2 Tolera
58. 27 2kg 36 3kg 45 4kg 54 4kg 63 5kg 72 6kg 81 6kg 90 7kg Model Additional Oil Required Per Circuit Ounces Grams Bene e 4 7 10 13 16 20 23 26 E 113 198 283 369 454 567 652 737 75 15 5 23 5 31 5 39 5 47 5 55 5 63 5 71 5 DS053 60Hz 213 439 666 893 1120 1347 1573 1800 2027 DS053 50Hz DS070 5 13 21 29 37 45 53 61 69 DS077 142 369 695 822 1049 1276 1502 1729 1956 DS105 NOTICE Risk of improper compressor lubrication Can cause compressor and refrigerant system damage For system charges over 200lb 90 7kg consult your Emerson representative Failure to use oil types viscosities and quantities recommended by the compressor manufacturer may reduce compressor life and void the compressor warranty See Table 64 for compressor oil types Do not mix polyolester POE and mineral based oils Do not mix oils of different viscosities Consult Emerson or the compressor manufacturer if questions arise 88 Piping 9 3 9 3 1 Dehydration Leak Test and Charging Procedures for R 407C and R 22 Air Cooled Condenser with Variable Fan Speed Head Pressure Control Systems The Variable Fan Speed Control systems FSC amp VFD use pressure activated electronic fan speed control systems and remotely located thermostat s to ensure operation at ambient temperatures as low as 0 F 18 C For th
59. 3 2378 Outside North America 614 841 6598 Environmental Systems 800 543 2778 Outside the United States 614 888 0246 Locations United States 1050 Dearborn Drive P O Box 29186 Columbus OH 43229 Europe Via Leonardo Da Vinci 8 Zona Industriale Tognana 35028 Piove Di Sacco PD Italy 39 049 9719111 Fax 39 049 5841 257 Asia 29 F The Orient Square Building F Ortigas Jr Road Ortigas Center Pasig City 1605 Philippines 63 26876615 Fax 63 2 7309572 EmersonNetworkPower com E Racks amp Integrated Cabinets Controls I Services EE Surge Protection
60. 4 full while running Adjust accordingly Check superheat on each circuit Should be approximately 10 25 Circuit 1 Circuit 2 Check low pressure settings Low pressure cutout 1 2 Low pressure cut in 1 2 Winter Control System air cooled only Liebert Lee Temp liquid level correct Record voltage to heater pads Volts If the head pressures recorded above equal 105 F condensing temperature no adjustment of the glycol water regulating valves is required If the system has balancing valves in it these valves also should be adjusted After the condensing temperature has been set up properly the system should be allowed to run for 10 to 15 minutes to obtain stable conditions Entering condenser water glycol temperature Leaving condenser water glycol temperature 128 Initial Startup Checks and Commissioning Procedure for Warranty Inspection 12 4 Commissioning Procedure With Panels On 1 Disconnect all power to the environmental control unit and check 2 Remove all line voltage fuses except the main fan fuses and the control voltage fuses in the electric panel Use Liebert iCOM to activate loads 3 Turn On power to the unit and check line voltage on main unit disconnect switch Line voltage must be within 10 of nameplate voltage 4 Turn On the main unit disconnect switch and check secondary voltage at transformer T1 Voltage at T1 must be 24VAC 2 5VAC check at TB1 1 and TB1 5 T1 voltage must not exc
61. 460V J2 J8 J15 J17 J19 J10 J23 P11 pin 2 3 575V J1 J8 J15 J17 J19 J10 J23 P11 pin 2 3 rd Capacity adjust Default at 100 Sealed do not adjust CURRENT TRANSFORMER For MES L 10 loop current sensing wire twice through current sensing coil LED For MES L 20 loop current sensing wire once Yellow through current sensing coil LED e o es e la 13 6 Condensate Drain and Condensate Pump Systems 13 6 1 Condensate Drain Check and clear obstructions in tubing during routine maintenance 13 6 2 Condensate Pump Disconnect power to unit using disconnect switch A WARNING Risk of electric shock Can cause injury or death The Liebert iCOM microprocessor does not isolate power from the unit even in the Unit Off mode Some internal components require and receive power even during the unit off mode of the Liebert COM control Disconnect local and remote power supplies before working within Check and clear obstructions in gravity lines leading to condensate pump Remove sump and clean with a stiff nylon brush and flush with water Inspect and clear clogs in discharge check valve and float mechanism e Reassemble and check for leaks 143 Maintenance 13 7 Air Cooled Condenser and Drycoolers Clear coil surface of all debris that will inhibit airflow Check for bent or dama
62. 5 889mm O ECS o HUM O co Ei E2 ECR FRONT OF UNIT 86 2184mm DPN000900 Rev 3 Xx Y Connection Size Opening Point Description in mm in mm in mm Ww Water Glycol GLYCOOL Access 79 15 16 2030 9 1 16 230 3 1 2 x 8 89 x 203 WS Water Glycol GLYCOOL Supply 82 15 16 2107 10 15 16 278 1 5 8 Cu Sweat WR Water Glycol GLYCOOL Return 82 15 16 2107 14 1 16 357 1 5 8 Cu Sweat Condensate Drain A infrared humidifier or no humidifier 4601168 cele dd CD Condensate Drain 46 1168 29 1 2 749 1 1 4 FPT steam generating humidifier W Optional Pump 46 1168 29 1 2 749 1 2 Cu Sweat HUM Humidifier Supply Line 53 1 2 1359 29 737 1 4 Cu Sweat ECS Econ O Coil Supply 54 7 8 1394 22 9 16 573 1 5 8 Cu Sweat ECR Econ O Coil Return 49 13 16 1265 28 1 2 724 1 5 8 Cu Sweat E1 Electrical Conn High Volt 55 1 2 1410 31 1 4 794 2 1 2 E2 Electrical Conn High Volt 52 7 16 1332 31 1 4 794 2 1 2 LV1 Electrical Conn Low Volt 2 1 4 57 27 686 7 8 LV2 Electrical Conn Low Volt 2 1 4 57 29 737 7 8 LV3 Electrical Conn Low Volt 2 1 4 57 31 787 7 8 B Blower Outlet 21 15 16 557 18 1 16 459 18 3 4 x 16 1 16 476 x 408 Field pitch condensate drain line a minimum of 1 8 3 2 mm per foot 305 mm All units contain a factory installed condensate trap Do not trap external to the unit Drain line may contain boiling water Select appropriate drain system materials The d
63. 5 i w g Pre Installation Guidelines 3 4 3 5 Connections and System Setup Plan the routing of wiring piping and ductwork to the unit See Figure 61 and Figures 76 through 96 for unit connection locations Water glycol and GLYCOOL units utilizing a drycooler may require an optional aquastat setting See Tables 66 through 69 for aquastat setting guidelines Applications with the optional stat setting require field piping to be insulated to prevent condensation The unit requires a drain which must comply with all applicable codes This drain line may contain boiling water See 9 1 1 Condensate Piping Field Installed for details Three phase electrical service is required for all models Electrical service must conform to national and local electrical codes See equipment nameplate for details If seismic requirements apply consult your local Emerson representative for information about a seismic rated floor stand NOTE Seal openings around piping and electrical connection to prevent air leakage Failure to do so could reduce the unit s cooling performance Operating Conditions The Liebert DS must be operated in a conditioned space within the operating envelope ASHRAE recommends for data centers Maximum temperature of 77 F 25 C DB and 55 RH or maximum WB of 65 5 F 18 6 C Operating outside this envelope can decrease equipment reliability Return air to the unit must be no cooler than the ASHRAE recommendati
64. 590 15 Ton W G Semi 2812 3012 2812 3012 Scroll 2382 2582 2532 2732 GIC Semi 2992 3192 2992 3192 Scroll 2562 2762 2712 2912 Air Semi 2562 2762 2662 2862 Scroll 2120 2310 2220 2410 Air DIC Semi 2742 942 2842 3042 20 Ton Scroll 2300 2490 2400 2590 WIG Semi 2862 3062 2962 3162 Scroll 2432 2632 2532 2732 Semi 3042 3242 3142 3342 ae Scroll 2612 2812 2712 2912 Air Semi 2612 2812 2662 2862 Scroll 2170 2360 2220 2410 Air DIC Semi 2792 2992 2842 3042 22 Ton Scroll 2350 2540 2400 2590 W G Semi 2912 3112 2962 3162 Scroll 2470 2660 2532 2732 GIC Semi 3092 3292 3142 3342 Scroll 2650 2840 2712 2912 Air Semi 3223 3443 3183 3403 Scroll 3103 3323 3063 3283 Air D C Semi 3583 3803 3513 3733 30 Ton Scroll 3463 3683 3393 3613 WIG Semi 3593 3813 3553 3773 Scroll 3473 3693 3433 3653 GIC Semi 3953 4173 3883 4103 Scroll 3833 4053 3763 3983 10 Liebert DS Dimensions and Weights Figure 6 Cabinet and floor planning dimensions downflow air cooled 28 42kW 8 12 ton semi hermetic compressor models Secondary Refrigerant Piping Entrance 56 7 8 Opening Notes Filters are accessible 33 through top of unit only 838mm q jan f a Opening Downflow electrical 35 619mm connections can be made 883mm from top or bottom of unit 19mm Bezels Secondary Entrance Secondary Entrance Minimum clearance High Volt Connection s Low Volt Connections required for filter 86 replacement 2184mm
65. 5kW 30 ton all All dimensions from rear corner of unit including panels Oo Outlet NOTES 102mm Lvi ve LV2 1 Drawing not to scale L M 2 Tolerance on all piping dimensions 3353mm o LV4 is 1 2 18mm Field routed alternatives for refrigerant gas and liquid line connection points See submittal page DPN001192 for blower outlet and deck dimensional data Front Of Unit TOP VIEW OF UNIT 20 1 16 509mm 17 3 16 437mm ZZZZZZZZZDEA a HA 3 7 8 98mm Factory Location 403mm LEFT SIDE SECTION VIEW OF UNIT A ees O bad da Table 57 Piping data upflow air cooled 105kW 30 ton all Point Description X Y Connection Size Opening R1A Refrigerant Access Top 106 7 8 2715 1 7 8 48 22 1 2 x 15 3 16 572 x 386 R2A _ Refrigerant Access Bottom 109 1 8 2772 13 7 8 352 16 7 16 x 4 418 x 102 L1 Liquid Line System 1 121 3 4 3092 16 3 4 425 5 8 Cu Sweat L2 Liquid Line System 2 118 1 8 3000 16 3 4 425 5 8 Cu Sweat G1 Hot Gas Discharge 1 118 1 4 3004 14 1 4 362 1 1 8 Cu Sweat G2 Hot Gas Discharge 2 115 5 8 2937 14 1 4 362 1 1 8 Cu Sweat R3A Refrigerant Access Side 6 x 17 3 16 152 x 437 CGD Condensate Gravity Drain 3 4 FPT CPD Condensate Pump Discharge Opt 102 3 8 2600 13 5 8 346 1 2 Cu Sweat HUM Humidifier Supply Line 101 1 8 2569 13 1 8 333 1 4 Cu Swe
66. 6 semm ESA 38mm 2184mm Low Volt Connection s 76 1930mm Shaded area indicates a recommended minimum 4 clearance for component r ee __ access A A 85 Gin i 2159mm DPN001162 mm Front View mev Table 11 Weight for upflow air cooled 28 42kW 8 12 ton semi hermetic compressor models Dry Weight Ib kg approximate Model No 028 042 Air Cooled 1830 830 Dual Cool 1980 898 19 Liebert DS Dimensions and Weights Figure 15 Cabinet and floor planning dimensions upflow air cooled 28 42kW 8 12 ton scroll or digital scroll compressor models Alternate Refrigerant Piping Entrance Note Front air return unit shown For rear return unit in addition to front service area shown also include 25 635mm on one side of unit for access to rear return filter box See DPN001196 Figure 30 3 4 19mm o Bezels Minimum required for blower replacement TOP VIEW High Volt Connection s co 1 Pern 73 38mm 1854mm 76 1930mm 34 864mm Shaded area indicates a recommended minimum clearance for component E access o 7 PE 72 1829mm il imm FRONT VIEW Table 12 Weight for upflow air cooled 28 42kW 8 12 ton scroll or digital scroll compressor models Dry Weight Ib kg approximate DPNO01163 Rev 1 Model No 028 042 Air Cooled 1520 689 Dual Cool 1670 758 20 Liebert D
67. 77kW 15 22 ton all compressor models osioon raie a eae Wace bw ae ase Primary connection locations upflow air cooled 105kW 30 ton all Primary connection locations upflow water glycol GLYCOOL 105kW 30 ton all Proper filter pleat direction Uptlow motor tt ss ashire SA Bad week a e hee be Auto belt tensioning motor base Figure 100 Correct orientation of float sSWItCh o o ooooooooorror noo Figure 101 Infrared humidifier lamps erri iarrsad rega aaae e E eee e E tenets Figure 102 Steam generating humidifier canister 0 0 0 0 eee een eens Figure 103 Removing the old canister 0 0 cc eee Figure 104 Drain valve assembly Figure 105 Canister plugs is sine gga thr ease ey br ed ie OF a Pesos te CT A to ic Figure 106 Circuit board diagrama vi Table 1 Table 2 Table 3 Table 4 Table 5 Table 6 Table 7 Table 8 Table 9 Table 10 Table 11 Table 12 Table 13 Table 14 Table 15 Table 16 Table 17 Table 18 Table 19 Table 20 Table 21 Table 22 Table 23 Table 24 Table 25 Table 26 Table 27 Table 28 Table 29 Table 30 Table 31 Table 32 Table 33 Table 34 Table 35 Table 36 Table 37 Table 38 Table 39 TABLES Shipping dimensions domestic and export inches MM 0 000 cee eee ee eens Shipping weights approximate kg o o ooooooooorrrrr nee nee nes Weights for downflow air cooled 28 42kW 8 12 ton semi hermetic co
68. 8 1 1 8 Cu Sweat R3A Refrigerant Access Side 6 x 17 3 16 152 x 437 CGD Condensate Gravity Drain 3 4 FPT CPD Condensate Pump Discharge Opt 79 5 16 2015 11 7 8 302 1 2 Cu Sweat HUM Humidifier Supply Line 79 5 16 2015 9 7 8 251 1 4 Cu Sweat ECS Econ O Coil Supply 78 5 8 1998 7 7 8 200 2 1 8 Cu Sweat ECR Econ O Coil Return 78 5 8 1998 4 5 8 117 2 1 8 Cu Sweat El Electrical Connection High Voltage 75 3 8 1915 30 762 2 1 2 E2 Electrical Connection High Voltage 69 7 8 1775 30 762 2 1 2 LV1 Electrical Connection Low Voltage 19 1 2 495 29 1 16 738 7 8 LV2 Electrical Connection Low Voltage 19 1 2 495 30 1 2 775 7 8 LV3 Electrical Connection Low Voltage 19 1 2 495 31 15 16 811 7 8 Field pitch condensate drain line a minimum of 1 8 3 2 mm per foot 305 mm All units contain a factory installed condensate trap Do not trap external to the unit Drain line may contain boiling water Select appropriate drain system materials The drain line must comply with all local codes Supplied on Dual Cool systems only 4 pipe system 119 Piping Schematics Figure 93 Primary connection locations upflow air cooled 53 77kW 15 22 ton scroll compressor models NOTE 1 Drawing not to scale 2 Tolerance on all piping dimensions is 1 2 18mm Field routed alternatives for refrigerant gas and liquid line connection points See submittal page DPNO01191 fo
69. 8 784 7 8 LV3 Electrical Conn Low Volt 2 51 32 813 7 8 B1 Blower Outlet 4 1 2 114 33 838 58 3 8 x 30 1483x762 Field pitch condensate drain line a minimum of 1 8 3 2 mm per foot 305 mm All units contain a factory installed condensate trap Do not trap external to the unit Drain line may contain boiling water Select appropriate drain system materials The drain line must comply with all local codes Supplied on Dual Cooling Systems only four pipe system 109 Piping Schematics Figure 83 Primary connection locations downflow water glycol GLYCOOL 53 77kW 15 22 ton all compressor models NOTE Drawing not to scale A Tolerance on all piping dimensions is 1 2 18mm BLOWER OUTLET FRONT VIEW SECTION A A 16 1 16 BLOWER OUTLET All dimensions from rear corner of unit including panels El E2 Blower Outlet 15 x 11 54 3 8 1381 18 1 16 459 FRONT OF UNIT DPN00933 109 2769mm AAA Rev 4 X Y Connection Size Opening Point Description in mm in mm in mm W Water Glycol GLYCOOL Access 103 2616 9 229 3 1 2 x 8 89 x 203 WS Water Glycol GLYCOOL Supply 104 3 4 2661 11 279 2 1 8 Cu Sweat WR Water Glycol GLYCOOL Return 104 3 4 2661 15 381 2 1 8 Cu Sweat as or no humidifier AUS 30 762 ASTEN CD Condensate Drain 69 1 4 1759 30 762 1 1 4 FPT
70. ATION CIRCUIT SHOWN FOR CLARITY FACTORY PIPING FIELD PIPING OPTIONAL FACTORY PIPING Components are not supplied by Liebert but are recommended for proper circuit operation and maintenance Field installed at highest point in V SERVICE SCHRADER ACCESS CONNECTION NO VALVE CORE system on return line to pumps SERVICE SCHRADER ACCESS CONNECTION WITH VALVE CORE Locate at tops of all risers and any intermediate system high points NOTE SCHEMATIC REPRESENTATION SHOWN THIS SCHEMATIC DOES NOT IMPLY OR DEFINE ELEVATIONS AND DPN001430 COMPONENT LOCATION UNLESS SPECIFICALLY NOTED Rev 0 100 Piping Schematics Figure 74 GLYCOOL with digital scroll compressor models Optional Dual Pump System shown LIEBERT HEAT REJECTION GLYCOL Check Valves on Dual Pimp DRYCOOLER MS Systems only Glycol Aquastat Gate Valves Sensing i Bulb AAA Hose Air Vents 0 Pressure Port typical i Flow Switch Supplied with Dual Pump Systems Xi Flow Regulating zio Li ME A Shut Off Valve LIEBERT DS UNIT ren RETUANT p SUPPLY and associated piping Shut Off Valve x a Shut Off Valve LIQUID 3 Way Chilled Glycol r H I EVAPORATOR VaMe Thermistor Bi Hose COIL Bib Service Valve hd Check Externa Valve COMPRESSOR Equalizer 3 Way Motorized From Ball Valve iCOM DISCHARGE Control PARADENSER
71. All other paneled sides overhang floor stand 1 25mm Leveling feet are provided with 1 1 2 38mm DPN000820 adjustment from nominal height C REV 2 Table 19 Floor stand and floor planning dimensions downflow 28 42kW 8 12 ton models Dimensions in mm Height in mm Model A B c D Turning Vane Tees aan Air Cooled Semi Hermetic Models and 85 26 All Water Glycol GLYCOOL Models 2159 660 124805 2080 15 381 10 264 18 457 13 340 Air Cooled Scroll Models and 72 13 Air Cooled Digital Scroll Models 1829 330 21 533 16 419 24 610 19 492 27 Liebert DS Dimensions and Weights Figure 23 Floor stand dimensions downflow 53 77kW 15 22 ton models A 1 1 2 38mm with feet A 69 3 4 1772mm 114mm 16 3 4 425mm 1 Supply air 25mm TYP discharge opening Gussets supplied on floor stands 12 305 mm tall and greater AAN ei l l Optional turning vane Turning vane air outlet 76mm shown as front air discharge Optional turning vane can be field installed in supply air discharge opening for front or rear air discharge Ei Right side of paneled unit is flush E with right side of floor stand All other paneled sides overhang floor stand 1 25mm Leveling feet are provided with 1 1 2 38mm adjustment from nominal height C DPNO000930 REV 1 Table 20 Floor stand and floor plannin
72. CONDENSER To iCOM Control Expansion Solenoid Sight Filter Drier Valve Valve Glass Pressure Relief valve s supplied Transducer with 50 Hz EU CE units rated TO SECOND maximum 480 PSIG 33 Bar REFRIGERATION CIRCUIT NOTE TWO REFRIGERATION CIRCUITS PROVIDED SINGLE REFRIGERATION CIRCUIT SHOWN FOR CLARITY FACTORY PIPING Components are not supplied by Z FIELD PIPING Liebert but are recommended for proper circuit operation and V SERVICE SCHRADER ACCESS CONNECTION NO VALVE CORE maintenance Field installed at highest point in y SERVICE SCHRADER ACCESS CONNECTION WITH VALVE CORE system on return line to pumps Locate at tops of all risers and any intermediate system high points NOTE SCHEMATIC REPRESENTATION SHOWN THIS SCHEMATIC DOES NOT IMPLY OR DEFINE ELEVATIONS AND COMPONENT LOCATION UNLESS SPECIFICALLY NOTED O 432 ev 0 101 Piping Schematics Figure 75 Optional piping schematic for Econ O Coil Return Supply Return Supply Thermistor A Thermistor Actuator Actuator Econ O Coil Econ O Coil i ot 1 ot Optional Econ O Coil 2 Way Valve Optional Econ O Coil 3 Way Valve Factory Piping Supplied with 10 feet 3m extra thermistor wire for installation mmm Field Piping on field supply line Note 1 Place thermistor in location where flow is always present DPN000805 2 Thermistor must be located out of the supply air steam Rev 1 102 Piping Schema
73. Component weights upflow air cooled 53 77kw 15 22 ton scroll digital scroll compressor models Dry Weight Approximate Including Panels Ib kg Component Air Cooled Dual Cool Compressor Assembly 540 246 540 246 Blower amp Electric Box Assembly 770 349 770 349 Filter amp Coil Assembly 760 345 940 426 71 Disassembling the Liebert DS for Transport Figure 57 Component dimensions upflow water glycol GLYCOOL 53 77kw 15 22 ton all compressor models DA SZ Ve AY Drawing views are simplified with panels removed to show overall dimensions See disassembly and handling instructions in installation manual A TS A TA KF IDEN Blower amp Electric Box Assembly 31 1 4 794mm 76 1930mm Assembled Filter amp Coil Height Assembly 76 pi 1930mm em i Ta a AE l 45 13 16 UCL ai i i 1 T1 33 26 k am 660mm L Leo 2083mm DPNOO1211 108 2743mm Assembled Length Rev 0 Table 43 Component weights upflow water glycol GLYCOOL 53 77kW 15 22 ton all compressor models Dry Weight Approximate Including Panels Ib kg Semi Hermetic Compressor Scroll or Digital Scroll Compressor Component Water Glycol GLYCOOL Dual Cool Water Glycol GLYCOOL Dual Cool Compressor Assembly 1270 578 1270 578 840 882 840 382 Blower Electric Box Assembly 770 349 770
74. Consult local building codes to determine whether the Liebert Fan Speed Control and VFD condensers will require field provided pressure relief devices NOTICE Risk of clogged or leaking drain lines Can cause equipment and building damage This unit requires a water drain connection Drain lines must be inspected regularly and maintenance must be performed to ensure that drain water runs freely through the drain system and that lines are clear and free of obstructions and in good condition with no visible sign of damage or leaks This unit may also require an external water supply to operate Improper installation application and service practices can result in water leakage from the unit Water leakage can result in severe property damage and loss of critical data center equipment Do not locate unit directly above any equipment that could sustain water damage Emerson recommends installing leak detection equipment for unit and supply lines NOTICE Risk of a leaking coil due to freezing and or corrosion Can cause equipment and serious building damage Cooling and heat rejection coils heat exchangers and piping systems that are connected to open cooling towers or other open water glycol systems are at high risk for freezing and premature corrosion Fluids in these systems must contain the proper antifreeze and inhibitors to prevent freezing and premature coil corrosion The water or water glycol solution must be analyzed by a competent water
75. Cut the insulation and pull it back from the piping 20 Cut the refrigerant piping with a tubing cutter if there is no Schrader fitting let the nitrogen bleed out before cutting all the way through the pipe NOTE Emerson does not recommend unsweating refrigerant connections 21 Unsweat or cut all copper water pipes that interconnect unit sections 22 Immediately cap and seal all piping that has been cut including the suction and liquid lines as well as the fluid piping on GLYCOOL and dual cool units Remove the Compressor Assembly 1 Secure the compressor wire harness to the compressor assembly 2 Remove the 10 thread cutting bolts holding the compressor section assembly to the filter and electric box assembly and the blower and coil assembly There are five bolts in the front four in the back and one on the top at the middle of the unit a Begin removing bolts at the bottom of the unit and progress toward the top Use this method for the front and back bolts b Stabilize the compressor section before removing the top middle bolt NOTICE The compressor section is top heavy and has a small base It must remain upright Do not lay the compressor section on its side during or after removing it from the Liebert DS Do not remove shipping blocks from semi hermetic compressors until the Liebert DS is fully reassembled and ready for installation NOTE Emerson recommends using piano jacks when moving this section 52
76. Disassembling the Liebert DS for Transport 7 2 2 Remove the Filter and Electric Box Assembly 7 3 1 2 T Using a stepladder to reach the top of the Liebert DS remove the filter support plate it is attached to the filter and electric box assembly with two screws one on each end Remove tags from the Schrader fittings on top of the coil headers Retain the tags for replacement during reassembly Remove 16 screws 8 on each side from the evaporator top cover plate to coil assembly Coil top blocker will remain with top section for rigidity Remove coil access plates from the left side of the Liebert DS Remove the four thread cutting bolts securing the filter and electric box assembly to the blower and coil assembly There are two on the left and two on the right Separate the unit sections with caution NOTICE Risk of improper handling The filter and electric box section should be moved forward and set on the floor Make sure to lift the coil plate over the Schrader fittings on the headers Emerson recommends using four people to remove this section Special care is required when moving this section because the legs are not designed to withstand strong shocks The blower and coil assembly must remain upright The coil is not secured to the blower and coil assembly Secure the coil to the bottom section with straps or a similar method before moving the section Move each section of the Liebert DS to the
77. Econ O Coil Supply 101 7 8 2588 29 737 2 5 8 Cu Sweat ECR Econ O Coil Return 94 9 16 2402 29 737 2 5 8 Cu Sweat El Electrical Conn High Volt 98 1 8 2492 31 1 4 794 2 1 2 E2 Electrical Conn High Volt 91 2311 31 1 4 794 2 1 2 LV1 Electrical Conn Low Volt 2 51 28 1 4 718 7 8 LV2 Electrical Conn Low Volt 2 51 30 1 4 768 7 8 LV3 Electrical Conn Low Volt 2 51 32 813 7 8 B1 Blower Outlet 27 7 8 708 18 457 14 1 2 x 15 11 16 368 x 398 B2 Blower Outlet 52 1 16 1322 18 457 14 1 2 x 15 11 16 368 x 398 B3 Blower Outlet 76 1 4 1937 18 457 14 1 2 x 15 11 16 368 x 398 Field pitch condensate drain line a minimum of 1 8 3 2 mm per foot 305 mm All units contain a factory installed condensate trap Do not trap external to the unit Drain line may contain boiling water Select appropriate drain system materials The drain line must comply with all local codes Supplied on Dual Cooling Systems only 4 pipe system 112 Piping Schematics Figure 86 Primary connection locations downflow air cooled 105kW 30 ton all compressor models with EC fan A Note Drawing not to scale 4 102mm Tolerance on all piping dimensions is 1 2 18mm FRONT VIEW SECTION A A All dimensions from rear corner of unit including panels X AA BLOWER OUTLET 16 7 16 o 418mm o E1 E2 HUM FRO
78. Electrical Connection Low Volt 2 1 4 57 29 737 7 8 LV3 Electrical Connection Low Volt 2 1 4 57 31 787 7 8 B Blower Outlet 21 15 16 558 18 1 16 459 18 3 4 x 16 1 16 476 x 408 Field pitch condensate drain line a minimum of 1 8 3 2mm per foot 305mm All units contain a factory installed condensate trap Do not trap external to the unit Drain line may contain boiling water Select appropriate drain system materials The drain line must comply with all local codes 103 Piping Schematics Figure 77 Primary connection locations downflow air Cooled 28 42kW 8 12 ton with scroll compressor models NOTE Drawing not to scale Tolerance on all piping dimensions is 1 2 13mm ALL DIMENSIONS FROM REAR CORNER OF UNIT A A INCLUDING PANELS FRONT VIEW SECTION A A E BLOWER Y OUTLET R L2 889mm 11 3 16 284mm Oecs oH o 000 FRONT OF UNIT Senindi 73 Rev 3 1854mm X Y Connection Size Opening Point Description inches mm inches mm inches mm R Refrigerant Access 59 5 16 1507 14 3 4 375 11 3 16 x 4 284 x 102 L1 Liquid Line System 1 69 15 16 1776 16 13 16 411 1 2 Cu Sweat L2 Liquid Line System 2 67 5 8 1718 16 13 16 411 1 2 Cu Sweat G1 Hot Gas Discharge 1 65 1 2 1664 16 13 16 411 5 8 Cu Sweat G2 Hot Gas Discharge 2 62 7 16 1586 16 13 16 411 5 8 Cu Sweat Ceo or no humidi
79. Figure 91 Figure 92 Figure 93 Figure 94 Figure 95 Figure 96 Figure 97 Figure 98 Figure 99 Piping schematic GLYCOOL with scroll compressor models o ooooooooo ooo Piping schematic water glycol with digital scroll compressor models GLYCOOL with digital scroll compressor models 0 0 cece o Optional piping schematic for Econ O Coil 0 0 eens Primary connection locations downflow air cooled 28 42kW 8 12 ton semi hermetic compressor models Primary connection locations downflow air Cooled 28 42kW 8 12 ton with scroll compressor models 5 i aep eirp a GUE GE God OM TRG EES See I SE Primary connection locations downflow water glycol GLYCOOL 28 42kW 8 12 ton allicompressor models ata vaca wae wiki E hed eh betas Gas RE ee se a BT cst OE OCR BE O Primary connection locations downflow air Cooled 53 77kW 15 22 ton semi hermetic Compressor models iii A a add did Primary connection locations downflow air cooled 53 77kW 15 22 tons semi hermetic compressor models with EC fan 0 0 cece ene nen eens Primary connection locations downflow air Cooled 53 77kW 15 22 ton with scroll Compressor models cx rrer sade A Bde Sha ene Di bly Glas Near ae sees aes Primary connection locations downflow air Cooled 53 77kW 15 22 ton with scroll compressor models with EC fan ooooooooooo ce eee cee nen monos Primary connection locations downflow water glyco
80. H Precision Cooling For Business Critical Continuity Liebert DS User Manual 28 105kW 8 30 Tons Upflow and Downflow 50 60Hz 4 EMERSON Network Power TABLE OF CONTENTS IMPORTANT SAFETY INSTRUCTIONS 000 eee cece eee eee eee eee 1 SAVE THESE INSTRUCTIONS occ aca a peel eens week ee eae ee 1 1 0 LIEBERT DS COMPONENTS AND NOMENCLATURE 2 2000s e eee o 3 2 0 COOLING CONFIGURATIONS ooocoooooooonn eee eee 6 3 0 PRE INSTALLATION GUIDELINES iii s ecw ee eee be ew eke eee ee 7 3 1 Room Preparations bed di teh bade ahd Gites bd A Sides A ae Hehe BG 7 3 2 Air Distribution Downtlow Units sidra da en 7 3 3 Air Distribution Upflow Units 8 3 4 Connections and System Setup 9 3 5 Operatino Conditions s eee Os See ro cd ta e lo og ph E de Ol da e oe 9 4 0 LIEBERT DS DIMENSIONS AND WEIGHTS 0000s ee eee eee eee eee 10 5 0 EQUIPMENT INSPECTION AND HANDLING 000 e eee e eee eee eee eee 37 5 1 Packaging Material ee si pp o WR Bes See PAR ee oh Seal i aes 37 SAFETY INFORMATION s t3 202 50h Cirtecen a eee dt Chee 37 5 2 Unpacking the Witt oi ed ening Rae Late ne SR aby Ss GAR GE Oe Seas Bw 38 5 2 1 Removing the Unit from the Skid With a Forklift o oo oooooooooooomoo o 39 5 2 2 Moving the Unit to the Installation Location with Piano Jacks ooooo 40 5 2 3 Removing Piano JackS ooooooomcorronorrr ro 40 5 2 4 Removing Liebert DS from Skid Using Riggin
81. LIEBERT LEE TEMP at E AE a AE A HOT GAS DISCHARGE HOT GAS DISCHARGE LIEBERT LEE TEMP FAN SPEED VFD Liebert Lee Temp or VFD condenser po Liebert Lee Temp or VFD condenser is required with digital scroll oj is required with digital scroll LIQUID For rises over 25ft 7 6m Na trap every 20ft 6m or 28 42kW Digital Solenoid Valve Sensing EVAPORATOR at evenly spaced points Bulb COIL 53 70kW Digital SUCTION External Equalizer Field installed relief valve s required Val q ci COMPRESSOR Valve for 50Hz EU CE units rated maximum 480 PSIG 33 Bar Isolation Valve a HOT GAS DISCHARGE j lt LJ i Expansion Solenoid Sight Filter Drier AHI ATAN Isolation Valve Valve Glass Valve Trap at base a sh i f risers longer NOTES Schemat tation shown Do not use f f tion locations o cnematic representation shown Do not use tor specific connection locations Components arenot supplied than 5ft 1 5m Two refrigeration circuits provided Single refrigeration circuit shown for clarity 3 p a 9 3 by Emerson but are recommended for REFRIGERANT PIPING proper circuit operation and FIELD PIPING maintenance V SERVICE SCHRADER ACCESS CONNECTION NO VALVE CORE DPN000798 y SERVICE SCHRADER ACCESS CONNECTION WITH VALVE CORE REV 5 95 Piping Schematics Figure 69 Piping schematic water glycol semi hermetic compressor models For systems with drycoolers refer to 13 14 3 Drycooler Settings
82. NNECTIONS 12 Factory installed disconnect switch 13 Secondary disconnect switch and earth ground 14 Three phase electrical service Terminals are on top of disconnect switch Three phase service not by Emerson 15 Smoke sensor alarm Factory wired dry contacts from smoke sensor are 91 common 92 NO and 93 NC Supervised contacts 80 amp 81 open on sensor trouble indication This smoke sensor is not intended to function as or replace any room smoke detection system that may be required by local or national codes 1A 24VAC max load Use field supplied Class 1 wiring 16 Reheat and humidifier lockout Remote 24VAC required at Terminals 82 amp 83 for lockout of reheat and humidifier 17 Condensate alarm with condensate pump option On pump high water indication normally open dry contact is closed across Terminals 88 amp 89 for remote indication 1A 24VAC max load Use field supplied Class 1 wiring 18 Analog inputs Terminals for up to two customer supplied analog inputs Device 1 wires to 41 and 42 Device 2 wires to 43 and 44 19 Remote humidifier On any call for humidification normally open dry contact is closed across Terminals 11 amp 12 to signal field supplied remote humidifier 1A 24VAC max load Use field supplied Class 1 wiring 20 Auxiliary cool contact On any call for Econ O Coil operation normally open dry contact is closed across Terminals 72 amp 73 on Dual Cool units only 1A 24VAC max
83. NT OF UNIT A A 132 3353mm DPN002154 Rev 0 Xx Y Connection Size Opening Point Description in mm in mm in mm R Refrigerant Access 109 2769 15 3 4 400 16 7 16 418 x 4 102 L1 Liquid Line System 1 121 3 4 3092 16 3 4 425 5 8 Cu Sweat L2 Liquid Line System 2 118 1 8 3000 16 3 4 425 5 8 Cu Sweat G1 Hot Gas Discharge 1 118 1 4 3004 14 1 4 362 1 1 8 Cu Sweat G2 Hot Gas Discharge 2 115 5 8 2937 14 1 4 362 1 1 8 Cu Sweat s o e 314 FPT W Optional Pump 83 13 16 2129 30 762 1 2 Cu Sweat HUM Humidifier Supply Line 85 5 16 2167 32 1 2 825 1 4 Cu Sweat ECS Econ O Coil Supply 101 7 8 2588 29 737 2 5 8 Cu Sweat ECR Econ O Coil Return 94 9 16 2402 29 737 2 5 8 Cu Sweat HS Hot Water Reheat Supply CONSULT FACTORY HR Hot Water Reheat Return CONSULT FACTORY El Electrical Conn High Volt 98 1 8 2492 31 788 2 1 2 E2 Electrical Conn High Volt 91 2311 31 788 2 1 2 LV1 Electrical Conn Low Volt 2 51 29 737 7 8 LV2 Electrical Conn Low Volt 2 51 30 7 8 784 7 8 LV3 Electrical Conn Low Volt 2 51 32 813 7 8 B1 Blower Outlet 4 1 2 114 33 838 77 3 8 x 30 1965 x 762 Field pitch condensate drain line a minimum of 1 8 3 2 mm per foot 305 mm All units contain a factory installed condensate trap Do not trap external to the unit Drain line may contain boiling water Select appropriate drain system materials The drain line must comply with all local cod
84. O001166 Dry Weight Ib kg approximate Model No 053 070 077 Air Cooled 2070 939 Dual Cool 2250 1021 23 Liebert DS Dimensions and Weights Figure 19 Cabinet and floor planning dimensions upflow water glycol GLYCOOL 53 77kW 15 22 ton all compressor models Note Front air return unit shown For rear return unit in addition to front service area Condenser Cleanout Access shown also include 25 635mm on one side of unit for access to rear return filter box See DPN001196 Figure 30 3 4 Required for 19mm condenser cleanout Bezels Minimum required Alternate Condenser for blower replacement Fluid Piping Entrance TOP VIEW Low Volt High Volt Connection s Connection s 1 1 2 109 38mm 2769mm 24 610mm 76 1930mm 864mm Shaded area indicates a gt gt recommended minimum clearance for component 2 y 08 2743mm access DPN001167 51mm FRONT VIEW Rev 1 Table 16 Weights for upflow water glycol GLYCOOL 53 77kW 15 22 ton all compressor models Dry Weight Ib kg approximate Compressor Type Model 053 070 077 Water Glycol 2650 1205 2800 1270 Semi Hermetic Compressor GLYCOOL Dual Cool 2830 1287 2980 1352 o Water Glycol 2370 1075 Scroll or Digital Scroll Compressor GLYCOOL Dual Cool 2550 1157 24 Liebert DS Dimensions and Weights Figure 20 Cabinet
85. OL Access Bottom 102 15 16 2615 9 229 3 1 2 x 8 89 x 203 W2A Water Glycol GLYCOOL Access Top 102 15 16 2615 9 229 3 1 2 x 8 89 x 203 W3A Water Glycol GLYCOOL Access Side 6 x 17 3 16 152 x 437 WSA Water Glycol GLYCOOL Supply 2 1 8 Cu Sweat WRA Water Glycol GLYCOOL Return 2 1 8 Cu Sweat CGD Condensate Gravity Drain 3 4 FPT CPD Condensate Pump Discharge Option 79 5 16 2015 11 7 8 302 1 2 Cu Sweat HUM Humidifier Supply Line 79 5 16 2015 9 7 8 251 1 4 Cu Sweat ECS Econ O Coil Supply 78 5 8 1998 7 7 8 200 2 1 8 Cu Sweat ECR Econ O Coil Return 78 5 8 1998 4 5 8 117 2 1 8 Cu Sweat E1 Electrical Connection High Voltage 75 3 8 1915 30 762 2 1 2 E2 Electrical Connection High Voltage 69 7 8 1775 30 762 2 1 2 LV1 Electrical Connection Low Voltage 19 1 2 495 29 1 16 738 7 8 LV2 Electrical Connection Low Voltage 19 1 2 495 30 1 2 775 7 8 LV3 Electrical Connection Low Voltage 19 1 2 495 31 15 16 811 7 8 Field pitch condensate drain line a minimum of 1 8 3 2 mm per foot 305 mm All units contain a factory installed condensate trap Do not trap external to the unit Drain line may contain boiling water Select appropriate drain system materials The drain line must comply with all local codes Supplied on Dual Cool systems only four pipe system 121 Piping Schematics Figure 95 Primary connection locations upflow air cooled 10
86. PEED or VFD CONDENSER COIL N A OPTIONAL FIELD INSTALLED FUSIBLE PLUG a t Eag _ SUCTION Filter Drier J For rises over 25ft 7 6m trap every 20ft 6m or EVAPORATOR at evenly spaced points COIL Field installed relief valve s required for 50Hz EU CE units rated maximum 480 PSIG 33 Bar Isolation Valve FP HOT GAS DISCHARGE Muffler a aa a LIQUID RETURN Isolation Trap at base Valve fr i of risers longer Components are not supplied fan 5ft 1 Sm by Emerson but are recommended for proper circuit operation and maintenance FIELD PIPING Components supplied by Emerson and must be field installed 70kW SERVICE SCHRADER ACCESS CONNECTION NO VALVE CORE 77KW amp 105kW model yi models only DPN000797 y SERVICE SCHRADER ACCESS CONNECTION WITH VALVE CORE REV 5 94 Piping Schematics Figure 68 Piping schematic air cooled scroll compressor models Relief Valve Service Valve LIQUID RETURN Check Valve t Inverted Trap on discharge and liquid lines to extend above ar Fn by a minimum of Head Pressure N vue Vamm Liebert Lee Temp Receiver Control Valve Y4 S a USE t i L Optional wy f f wl CONDENSER Field Installed CONDENSER I COIL Fusible Plug COIL FAN SPEED or VFD
87. S Dimensions and Weights Figure 16 Cabinet and floor planning dimensions upflow water glycol GLYCOOL 28 42kW 8 12 ton all compressor models Condenser Cleanout Access Note Front air return unit shown For rear return unit in addition to front service area I Oooo 7 S shown also include 25 635mm on one side of unit for access to rear return filter box See DPN001196 Figure 30 A 3 4 19mm Bezels Required for condenser cleanout Alternate e TOP VIEW Piping Entrance High Volt Connection s Low Volt Connection s Minimum required for blower replacement 1 1 2 gammy y FB ST a 76 1930mm SS 85 2159mm 5i DPN001164 51mm FRONT VIEW Rev 1 Table 13 Weights for upflow water glycol GLYCOOL 28 42kW 8 12 ton all compressor models Dry Weight Ib kg approximate Shaded area indicates a p 864mm recommended minimum clearance for component access Compressor Type Model 028 042 Water Glycol 1980 898 Semi Hermetic GLYCOOL Dual Cool 2130 966 uN Water Glycol 1830 830 Scroll or Digital Scroll GLYCOOL Dual Cool 1980 898 21 Liebert DS Dimensions and Weights Figure 17 Cabinet and floor planning dimensions upflow air cooled 53 77kW 15 22 ton semi hermetic compressor models Alternate Refrigerant Note Front air return unit shown For rear return unit in addition to front service area shown also include 25 635mm
88. S053 070 077 25 x 20 6 6 6 VS105 8 8 8 131 Maintenance 13 1 1 Filter Replacement Procedure Downflow Units 1 2 5 6 Disconnect power from the Liebert DS Using a stepladder remove filters from the top of the unit The optional downflow return air plenum includes a filter access door Replace with new filters install the filters in the proper direction of the airflow see Figure 97 Test the operation of the filter clog switch The unit panels must be in place and closed to find this point Start the blower and turn the switch counterclockwise until the alarm is energized Turn the adjusting knob one turn clockwise or to the desired filter change point 13 1 2 Filter Replacement Procedure Upflow Units 1 2 5 6 Disconnect power from the Liebert DS Remove the lower front access panel and remove the filters For upflow front return units remove the lower front access panels lift filters to the top of the filter rack and tilt forward for removal For upflow rear return units remove filters using filter access door in rear return filter box Replace with new filters install the filters in the proper direction of the airflow see Figure 97 Test the operation of the filter clog switch The unit panels must be in place and closed to find this point Start the blower and turn the switch counterclockwise until the alarm is energized Turn the adjusting knob one turn clockwise
89. See DPN001196 Figure 30 s Required for 889mm 7 1 3 4 19mm condenser cleanout i Bezels Alternate Condenser Fluid Piping Entrance TOP VIEW Minimum required Low Volt Connection s for blower replacement High Volt Connection s 1 1 2 132 3353mm 38mm i Qo 76 1930mm y Shaded area indicates a A a la 131 3327mm recommended minimum clearance for component 51mm FRONT VIEW pisces j DPN001169 REV 0 Table 18 Weights upflow water glycol GLYCOOL 105kW 30 ton all compressors Model 105 Water Glycol 3370 1529 Semi Hermetic Compressor GLYCOOL Dual Cool 3700 1678 Scroll or Digital Scroll Water Glycol 3250 1474 Compressor GLYCOOL Dual Cool 3580 1624 26 Liebert DS Dimensions and Weights Figure 22 Floor stand dimensions downflow 28 42kW 8 12 ton models A 1 1 2 38mm with feet 47 15 16 1218mm 425mm 34 1 2 876mm Supply air with feet discharge opening 25mm TYP LAS Supply air Gussets supplied on floor stands LS discharge 12 305 mm tall and greater 7 81 Turning vane air outlet Optional turning vane 23mm 3 Optional turning vane can be field installed shown as front air discharge 76mm in supply air discharge opening for front or rear air discharge D y Da C Right side of paneled unit is flush with right side of floor stand
90. T W Optional Pump 69 1 4 1759 30 762 1 2 Cu Sweat HUM Humidifier Supply Line 76 1 2 1943 29 736 1 4 Cu Sweat ECS Econ O Coil Supply 78 5 8 1997 22 1 4 565 2 1 8 Cu Sweat ECR Econ O Coil Return 72 1829 29 737 2 1 8 Cu Sweat El Electrical Conn High Volt 78 1 2 1994 31 1 8 790 2 1 2 E2 Electrical Conn High Volt 75 3 8 1915 31 1 8 790 2 1 2 LV1 Electrical Conn Low Volt 1 7 8 48 28 1 2 724 7 8 LV2 Electrical Conn Low Volt 1 7 8 48 30 1 4 768 7 8 LV3 Electrical Conn Low Volt 1 7 8 48 32 813 7 8 Blower Outlet 15 x 15 23 1 8 587 18 1 16 459 18 3 4 x 16 1 16 476 x 408 459 B1 Blower Outlet 15 x 11 27 3 4 705 18 1 16 459 14 3 4 x 16 1 16 375 x 408 i Blower Outlet 15 x 15 50 3 8 1280 18 1 16 459 18 3 4 x 16 1 16 476 x 408 Blower Outlet 15 x 11 54 3 8 1381 18 1 16 459 14 3 4 x 16 1 16 375 x 408 Field pitch condensate drain line a minimum of 1 8 3 2 mm per foot 305 mm All units contain a factory installed condensate trap Do not trap external to the unit Drain line may contain boiling water Select appropriate drain system materials The drain line must comply with all local codes Supplied on Dual Cooling Systems only 4 pipe system 108 Piping Schematics Figure 82 Primary connection locations downflow air Cooled 53 77kW 15 22 ton with scroll compressor models with EC
91. W OF UNIT Left Front Panel Not Shown 403mm DPN001258 LEFT SIDE SECTION VIEW OF UNIT Rev 0 Table 58 Piping data upflow upflow water glycol GLYCOOL 105kW 30 ton all Xx Y Connection Size Point Description inches mm inches mm Opening inches mm W1A Water Glycol GLYCOOL Access Bottom 126 1 8 3204 9 229 3 1 2 x 8 89 x 203 W2A __ Water Glycol GLYCOOL Access Top 126 1 8 3204 9 229 3 1 2 x 8 89 x 203 W3A Water Glycol GLYCOOL Access Side 6 x 17 3 16 152 x 437 WSA Water Glycol GLYCOOL Supply 2 1 8 Cu Sweat WRA _ Water Glycol GLYCOOL Return 2 1 8 Cu Sweat CGD Condensate Gravity Drain 3 4 FPT CPD Condensate Pump Discharge Opt 102 3 8 2600 13 5 8 346 1 2 Cu Sweat HUM Humidifier Supply Line 101 1 8 2569 13 1 8 333 1 4 Cu Sweat ECS Econ O Coil Supply 101 1 8 2569 10 1 4 260 2 5 8 Cu Sweat ECR Econ O Coil Return 101 1 8 2569 5 1 4 133 2 5 8 Cu Sweat El Electrical Conn High Volt 98 1 2 2502 30 762 2 1 2 E2 Electrical Conn High Volt 93 2362 30 762 2 1 2 LV1 Electrical Conn Low Volt 41 1 8 1045 30 3 8 772 7 8 LV2 Electrical Conn Low Volt 38 7 8 987 30 3 8 772 7 8 LV3 Electrical Conn Low Volt 35 1 8 892 30 3 8 772 7 8 LV4 Electrical Conn Low Volt 31 5 8 803 30 3 8 772 7 8 Field pitch condensate drain line a minimum of 1 8 3 2 mm per foot 305 mm All units contain a factory installed condensate trap Do not trap extern
92. WER OUTLET i DPN002179 Rev 0 Xx Y Connection Size Opening Point Description in mm in mm in mm R Refrigerant Access 82 3 4 2102 13 7 8 352 16 7 16 x 4 4181 x 102mm 53kW 15 Tons 70 amp 77kW 20 amp 22 Tons L1 Liquid Line System 1 97 2464 16 7 8 428 1 2 5 8 Cu Sweat L2 Liquid Line System 2 93 5 16 2370 16 7 8 428 1 2 5 8 Cu Sweat G1 Hot Gas Discharge 1 90 5 8 2302 16 5 8 422 7 8 1 1 8 Cu Sweat G2 Hot Gas Discharge 2 88 2235 16 5 8 422 7 8 1 1 8 Cu Sweat Condensate Drain infrared CD humidifier or no humidifier 68 3 8 1737 31 3 8 797 3 4 FPT W Optional Pump 68 3 8 1737 31 3 8 797 1 2 Cu Sweat HUM Humidifier Supply Line 76 1 2 1943 29 736 1 4 Cu Sweat ECS Econ O Coil Supply 78 5 8 1997 22 1 4 565 2 1 8 Cu Sweat ECR Econ O Coil Return 73 15 16 1862 26 9 16 675 2 1 8 Cu Sweat HS Hot Water Reheat Supply CONSULT FACTORY HR Hot Water Reheat Return CONSULT FACTORY El Electrical Conn High Volt 78 1 2 1994 31 1 8 790 2 1 2 E2 Electrical Conn High Volt 75 3 8 1915 31 1 8 790 2 1 LV1 Electrical Conn Low Volt 2 51 29 737 7 8 LV2 Electrical Conn Low Volt 2 51 30 7 8 784 7 8 LV3 Electrical Conn Low Volt 2 51 32 813 7 8 Field pitch condensate drain line a minimum of 1 8 3 2 mm per foot 305 mm All units contain a factory ins
93. YCOOL Return 127 7 8 3248 13 1 4 337 2 1 8 Cu Sweat ess lHum nenor No Humidor 87 3 8 2220 31 787 3 4 FPT W Optional Pump 83 13 16 2129 30 762 1 2 Cu Sweat HUM Humidifier Supply Line 85 5 16 2167 32 1 2 825 1 4 Cu Sweat ECS Econ O Coil Supply 101 7 8 2588 29 737 2 5 8 Cu Sweat ECR Econ O Coil Return 94 9 16 2402 29 737 2 5 8 Cu Sweat HS Hot Water Reheat Supply CONSULT FACTORY HR Hot Water Reheat Return CONSULT FACTORY E1 Electrical Conn High Volt 98 1 8 2492 31 788 2 1 2 E2 Electrical Conn High Volt 91 2311 31 788 2 1 2 LV1 Electrical Conn Low Volt 2 51 29 737 7 8 LV2 Electrical Conn Low Volt 2 51 30 7 8 784 7 8 LV3 Electrical Conn Low Volt 2 51 32 813 7 8 B1 Blower Outlet 4 1 2 114 33 838 77 3 8 x 30 1965 x 762 Field pitch condensate drain line a minimum of 1 8 3 2 mm per foot 305 mm All units contain a factory installed condensate trap Do not trap external to the unit Drain line may contain boiling water Select appropriate drain system materials The drain line must comply with all local codes Supplied on Dual Cooling systems only 4 piping system 115 Piping Schematics Figure 89 Primary connection locations upflow air cooled 28 42kw 8 12 ton semi hermetic compressor models NOTES 1 Drawing not to scale 2 Tolerance on all piping dimensions is A Field routed alternatives for refrig
94. able 54 Check unit nameplate for refrigerant type to be used Unit control configurations differ depending on refrigerant type Refrigerant charging requires unit operation Refer to 11 0 Checklist for Completed Installation Calculate the amount of charge for the system Refer to the unit condenser and refrigerant line charge data in Tables 50 51 and 52 Weigh in as much of the system charge as possible before starting the unit CAUTION Risk of improper refrigerant charging Can cause equipment damage Refrigerant R407C is a blend of three components and must be introduced and charged from the cylinder only as a liquid When adding liquid refrigerant to an operating system it may be necessary to add the refrigerant through the compressor suction service valve Care must be exercised to avoid damage to the compressor Emerson recommends connecting a sight glass between the charging hose and the compressor suction service valve This will permit adjustment of the cylinder hand valve so that liquid can leave the cylinder while allowing vapor to enter the compressor Turn on unit disconnect switch Operate the unit for 30 minutes using the charging function for System 1 and System 2 in the diagnostic section of the Liebert COM control see Liebert COM user manual SL 18835 The charging function operates the compressor at full capacity and energizes the blower motor and the liquid line solenoid valve The reheat and humidifier are
95. able tie that retains the wiring loop to the blower mounting plate All other cable ties that route the fan wiring should remain intact 6 Remove the six 1 2 hex head screws Retain the hardware for later use 44 EC Fans Lowering and Removing Figure 39 Lowering EC fans into floor stand Steps 1 through 6 Remove Middle Panel from Front of Unit Remove Infrared Humidifier Remove Bottom Panel from Front of Unit Raise Jack Not Shown to Support Fan Fan Deck Z Bracket not present on Liebert DS Remove Hex Al Remove lt 7 Head Screws Hex Head Screws Raise Jack to Support Z Bracket a pp Section Y not present Not Shown Z Bracket Cut and Remove on Liebert DS not present on Cable Tie Securing DPN002037 Liebert DS units vino Loop Wiring Page 1 Rev 4 Section B B Loop Top View of Fan Deck 45 EC Fans Lowering and Removing 7 Using the jack lower the fan module slowly until it rests on the frame of the unit NOTICE Risk of equipment snagging cables and wiring Can damage the Liebert DS components Monitor the position of the fan harnesses and other parts while lowering the fan to be sure that they are not caught or pinched 8 Secure the fan module in the fully lowered position by re installing the hex head screws directly to the frame Screw clearance holes are provided in the fan module NOTE Not all hardware retained will be used to secure th
96. al to the unit Drain line may contain boiling water Select appropriate drain system materials The drain line must comply with all local codes 123 Checklist for Completed Installation 11 0 CHECKLIST FOR COMPLETED INSTALLATION 11 1 Moving and Placing Equipment ___1 Unpack and check received material ___ 2 Proper clearance for service access has been maintained around the equipment 3 Equipment is level and mounting fasteners are tight ___ 4 Ifthe equipment has been disassembled for installation unit must be reassembled per instructions 11 2 Electrical __ 1 Supply voltage and phase matches equipment nameplate __ 2 Wiring connections completed between disconnect switch evaporator unit and heat rejection equipment ___ 3 Power line circuit breakers or fuses have proper ratings for equipment installed __ 4 Control wiring connections completed between indoor evaporator and heat rejection equipment 5 Allinternal and external high and low voltage wiring connections are tight 6 Confirm that unit is properly grounded to an earth ground ___ 7 Control transformer setting matches incoming power __ 8 Electrical service conforms to national and local codes ___ 9 Check blowers and compressors scroll only for proper rotation 10 Upflow units only Field installed low volt wiring routed with loop to allow electric box to swing 11 For units with variable speed drive VSD operating on Delta connected
97. all Valve Digital Scroll Compressors On digital scroll units discharge pressure is controlled by a motorized ball valve During unloaded operation the pressure changes during each digital cycle could result in excessive repositions with a pressure operated water regulating valve The control algorithm for the motorized ball valve uses an intelligent sampling rate and adjustable pressure thresholds to reduce valve repositions The valve assembly consists of the brass valve linkage and actuator Control The valve actuator operates on 24VAC power and is controlled by a 2 10VDC proportional control signal The valve full open to full close time is 60 seconds At 2VDC the valve is closed at 1OVDC the valve is fully open There is a 20 second delay to position the motorized ball valve before starting the compressor Control Method The control utilizes an upper and lower pressure threshold with a 35 PSI 241 kPa deadband to reduce valve movement If the liquid pressure is between the upper and lower threshold the valve remains at the current position If the liquid pressure exceeds the upper threshold the valve opens and if the pressure falls below the lower threshold the valve closes There are multiple adjustment bands to ease discharge pressure back into control range Adjustment Both pressure thresholds can be shifted simultaneously over a 50 PSI 845 kPa range the 35 PSI 241 kPa differential remains constant The ball valve setpoint
98. allowable distance that will fit under the skid Ensure the fork length is suitable for the unit length When moving the packaged Liebert DS with a forklift lift the unit from the designated heavy side of the unit no higher than 6 152mm off the ground Ensure that the opposite end still touches the ground The unit is to be pulled by the forklift If the unit must be lifted higher than 6 152mm great care must be exercised Personnel who are not directly involved in moving the unit must be kept 20 5m or farther from the lift point of the unit Always refer to the location of the center of gravity indicators when lifting the Liebert DS see Figure 36 5 2 Unpacking the Unit Remove outer packaging when ready to install the unit Remove the exterior stretch wrap packaging material from around the unit exposing the protective corner and side packaging planks Remove the corner and side packaging planks from the unit exposing the bag over the unit Remove the bag from the unit when ready to remove the skid and install the unit Figure 33 Removing packaging 181659P1 Rev 5 38 Equipment Inspection and Handling 5 2 1 Removing the Unit from the Skid With a Forklift 1 Align a forklift with either the front or rear side of the unit A WARNING Risk of improper moving Can cause equipment damage injury or death Use the center of gravity indicators on the unit to determine the entry points for the tines
99. am Generating 000 eee een eee nee 138 13 5 1 Replacing the Steam Generating Humidifier Canister 0 0 0 0 cece cee eens 138 13 6 Condensate Drain and Condensate Pump ysteMS oooooooooooooooooooo 143 13 6 1 Cond nsate Drains nasira Boge oat A FO ee bea ae Pd oO A Dee PSB 143 13 6 2 Condensate Pump 2 0 Jeti ee n tread Be eee PO Oe At nee Paes 143 13 7 Air Cooled Condenser and Drycoolers 0 0 cc ccc cece nee eens 144 13 8 Reheat Electric Reheat Three Stage and SCR 0 0 0 cece ees 144 13 9 Thermostatic Expansion Valve 0 0c cee ene a teen nes 144 13 9 1 Determine Suction Superheat 0 0 0 eee eee teen nes 144 13 9 2 Adjust Superheat Setting with the TEV 0 0 0 0 ccc ee eens 144 1351 0 COMpressor isa dr A dy eons Deets Ld ah oF encanto ok Hark ales 145 13 10 1 Gompressor Ol ti e808 gp sv ends ahora See ag diia bp R ta BAN Te BR lop ada 8 Belen ica 145 13 10 2 Semi Hermetic Compressors s s s nuoran annur ce eee ee eee e nes 145 13 10 3 Scroll and Digital Scroll Compressors 0 00 00 eee eens 145 13 11 Compressor Replacement 145 13 11 1 Compressor Motor Burnout ce cee E SEERA nes 145 13 11 2 Digital Compressor Unloading Solenoid S ooo 146 13 11 3 Compressor Replacement Procedure 146 13 12 Facility Fluid and Piping Maintenance 00 0 eee 146 13 13 Paradenser Water Cooled Condenser 2c eee eee ee eee eee tene
100. amage injury and death Using a humidifier canister that has reached the end of it s service life can be extremely hazardous If the canister cannot be replaced immediately at the end of life condition turn Off the power and water supply to the humidifier and remove the canister until a replacement canister can be installed Table 61 Humidifier canister part numbers Unit Model 200V 208V 230V 380 415V 460V 575V Humidifier Model DS 028 042 163814P1 163814P4 MES 10 DS 053 105 163814P1 163814P2 MES 20 Removing the Old Canister To replace a used up humidifier cylinder refer to Figure 103 and perform these steps 1 Turn off the water supply to unit 2 The old cylinder must be drained completely before removing This is done by pushing the auto on off drain switch to the Drain position 3 When completely drained push the auto on off drain switch to the Off position Open the main electrical disconnect during the entire cylinder change operation The power wires to the cylinder are attached by cylinder plugs to the electrode pins on top of the cylinder Pull up to remove the plugs from the pins Use slotted screwdriver to loosen the steam hose clamp s Disconnect the steam hose by pulling it straight up QA Loosen reversible cylinder zip tie The cylinder is now ready to be lifted out of the unit AID Figure 103Removing the old canister 139 Maintenance Mandatory Cleaning of t
101. ance see Liebert iCOM user manual SL 18835 for autoflush setup To help reduce excessive scaling in locations with difficult water quality the use of Vapure is recommended contact your local Emerson representative Cleaning Humidifier Pan and Float Switch Before turning off unit With unit operating remove call for humidification at the Liebert iCOM control Let the blower operate 5 minutes to allow the humidifier and water to cool If unit has a condensate pump turn unit OFF at Liebert iCOM control Pull out the humidifier standpipe in pan Inspect the O ring replace if necessary Let the pan drain and condensate pump operate if applicable Disconnect power from the unit Disconnect the drain coupling from the bottom of the pan Remove the thermostat from the bottom of the pan and the retaining screws from the sides of the pan 10 Slide the pan out 11 Loosen scale on side and bottom of pan with a stiff nylon brush or plastic scraper 12 Flush with water 13 Carefully clean scale off float switch make sure to reinstall correctly see Figure 100 14 Reinstall the pan thermostat standpipe drain coupling and screws into the humidifier 15 Operate the humidifier and check for leaks Canon rpwnr 136 Maintenance Figure 100Correct orientation of float switch Correct Switch Orientation Incorrect Switch Orientation DPN000996 Rev 0 13 4 2 Changing Humidifier Lamps NOTE Touching qua
102. and floor planning dimensions upflow air cooled 105kW 30 ton all Note Front air return unit shown For rear return unit in addition to front service area shown also include 25 635mm on one Alternate Refrigerant Piping Entrance side of unit for access to rear return filter 33 box 838mm See DPN001196 Figure 30 35 889mm 3 4 19mm Bezels Minimum required High Volt TOP VIEW Low Volt for blower replacement Connection s onnection s s 132 3353mm sz 76 1930mm an La 134 3327mm Shaded area indicates a gt 51mm recommended minimum FRONT VIEW clearance for component e access 0 Table 17 Weights upflow air cooled 105kW 30 ton all Dry Weight Approximate Ib kg Model 105 Semi Hermetic Air Cooled 3000 1361 Semi Hermetic Dual Cool 3330 1510 Scroll or Digital Scroll Air Cooled 2880 1306 Scroll or Digital Scroll Dual Cool 3210 1456 25 Liebert DS Dimensions and Weights Figure 21 Cabinet and floor planning dimensions upflow water glycol GLYCOOL 105kW 30 ton all compressors Note Front air return unit shown For rear return unit in addition to front service area Alternate Refrigerant shown also include 25 635mm on one Piping Entrance side of unit for access to rear return filter OOO 9000069 ee box
103. assembling the unit must be qualified in wiring brazing and refrigeration Improperly disassembling or reassembling the Liebert DS may affect warranty Required Equipment e Piano jacks Stepladder for downflow units Refrigeration tools 50 Disassembling the Liebert DS for Transport 7 2 Disassembly Downflow Units For detailed views of downflow units see Figures 43 through 51 1 2 3 eck DD 11 12 13 14 15 16 17 Remove the unit from its shipping skid before beginning refer to 5 2 Unpacking the Unit Remove all panels except the top front accent Remove all filters This allows access to the screws for metal plate blocking off the top coil and removal of the filter plate All wires are hot stamped and all circuit board connectors are lettered to ease connection Some cable ties must be cut and replaced Refer to the unit s wiring schematic on the unit s deadfront panel for details NOTICE Do not lay the compressor section on its side It must remain upright The coil section also must remain upright Label the three quick connect plugs from the compressor compartment and disconnect them Disconnect the compressor wire harness including the crankcase heater wires if present from the contactor in the electric box Pull the conduit and wires into the compressor compartment Disconnect the fan motor wire harness from the bottom of the contactor in the electric box Pull the con
104. at ECS _ Econ O Coil Supply 101 1 8 2569 10 1 4 260 2 5 8 Cu Sweat ECR Econ O Coil Return 101 1 8 2569 5 1 4 133 2 5 8 Cu Sweat El Electrical Conn High Volt 98 1 2 2502 30 762 2 1 2 E2 Electrical Conn High Volt 93 2362 30 762 2 1 2 LV1 Electrical Conn Low Volt 41 1 8 1045 30 3 8 772 7 8 LV2 Electrical Conn Low Volt 38 7 8 987 30 3 8 772 7 8 LV3 Electrical Conn Low Volt 35 1 8 892 30 3 8 772 7 8 LV4 Electrical Conn Low Volt 31 5 8 803 30 3 8 772 7 8 Field pitch condensate drain line a minimum of 1 8 3 2 mm per foot 305 mm All units contain a factory installed condensate trap Do not trap external to the unit Drain line may contain boiling water Select appropriate drain system materials The drain line must comply with all local codes 122 Piping Schematics Figure 96 Primary connection locations upflow water glycol GLYCOOL 105kW 30 ton all All dimensions from rear corner of unit including panels 0 889mm NOTES Lva EVO 1 Drawing not to scale CEOE2 Wo Tva y 2 Tolerance on all piping dimensions is 1 2 13mm E EZ Ariela routed alternatives for water glycol 3353mm Front Of Unit connections A See submittal page DPNO01192 for blower outlet and deck dimensional data TOP VIEW OF UNIT 17 3 16 437mm z ZZZZZZZZZZZ 3 7 8 98mm FRONT SECTION VIE
105. at setting 1 Remove the valve cap at the bottom of the valve 2 Turn the adjusting stem counterclockwise to lower the superheat 3 Turn the adjusting stem clockwise to increase the superheat NOTE Make no more than one turn of the stem at a time As long as thirty minutes may be required for the new balance to take place 144 Maintenance 13 10 Compressor 13 10 1Compressor Oil NOTICE Risk of improper compressor lubrication Can cause compressor and refrigerant system damage Failure to use oil types viscosities and quantities recommended by the compressor manufacturer may reduce compressor life and void the compressor warranty See oil types specified in Table 64 Do NOT mix polyolester POE and mineral based oils Do NOT mix oils of different viscosities Consult Emerson or the compressor manufacturer if you have questions Table 64 Compressor oil types Refrigerant Type Compressor Type R 22 R 407c 41 POE Oil ISO Carlyle Semi Hermetic Mineral Oil 68 Viscosity 2 Copeland Scroll POE Oil ISO 32 Viscosity 3 and Digital Scroll 1 Use Carlyle Mineral Oil Totaline P903 2001 Witco Suniso 3GS or other Carlyle approved oils 2 Use Carlyle POE Oil Totaline P903 1001 Castrol SW68 or other Carlyle approved oils 3 Use Copeland POE Oil ULTRA 32 3MAF or other Copeland approved oils 13 10 2Semi Hermetic Compressors Oil level can be viewed at the sight glass on semi
106. be sure the voltage matches available utility power Follow all local codes WARNING Risk of improper wiring piping moving lifting and handling Can cause equipment damage injury or death Only properly trained and qualified service personnel should work on this equipment Read all installation operating and safety instructions before proceeding Read and follow all warnings in this manual WARNING Risk of fire Can cause equipment damage injury or death Do not ignore humidifier problem alarms Resetting humidifier without addressing cause may result in fire or damage due to leaking water See Table 62 for alarm corrective actions After an extended period of operation in accordance with life expectancy information the cylinder is completely used as indicated by the amber high water sensor light illuminated on the cabinet When this condition is reached a new replacement cylinder is to be installed A NOTE The amber high water sensor light may come on during initial startup but this instance does not indicate that the cylinder should be replaced 138 Maintenance The steam cylinder is disposable and must be replaced at the end of the cylinder s life Cylinder life will vary according to water supply conditions and humidifier usage A WARNING Risk of humidifier canister meltdown smoke and fire Can cause fire suppression system activation fire and smoke alarm activation serious equipment and building d
107. ble through top of unit only Downflow electrical connections can be made from top or bottom of unit 24 3 8 619mm Opening 3 4 19mm Bezels TOP VIEW Secondary Entrance Secondary Entrance High Volt Connection s Low Volt Connections Required for condenser cleanout zak Minimum required for filter replacement Secondary Condenser Fluid Entrance AAA A 32 3353mm AR E E 76 i 7 S 15 381mm Shaded area indicates a spamm 1 recommended minimum FRONT VIEW clearance for component ccess DPN001013 AA 131 3327mm IO Gi Rev 3 Table 10 Weights for downflow water glycol GLYCOOL 105kW 30 ton all compressor models Dry Weight Ib kg approximate Compressor Type Model 105 i q Water Glycol 3410 1550 Semi Hermetic Compressor GLYCOOL Dual Cool 3770 1714 Water Glycol 3290 1495 Scroll Compressor GLYCOOL Dual Cool 3650 1659 18 Liebert DS Dimensions and Weights Figure 14 Cabinet and floor planning dimensions upflow air cooled 28 42kW 8 12 ton semi hermetic compressor models Alternate Refrigerant Piping Entrance Note Front air return unit shown For rear return unit in addition to front service area shown also include 25 635mm on one side of unit for access to rear return filter box See DPN001196 Figure 30 3 4 19mm Bezels Top View Minimum required id for blower replacement 8
108. bsolute Function psiG kPa psiA kPa psiG kPa psiA kPa Pump Down Cutout 35 241 50 344 35 241 50 344 Pump Down Reset 5 448 80 552 5 448 80 552 Minimum to Start Cooling 50 345 sh 48 v 65 448 Low Pressure Cutout DX only 0 138 5 241 0 138 35 241 Freeze Protection DX w Econ O Coil 48 331 63 434 2 358 67 461 Due to control processing time the pumpdown pressure at compressor shut off will be approximately 20 psiG 138 kPa 35 psiA 241 kPa even though the set point is 35 psiG 241 kPa 50 psiA 344kPa 93 Piping Schematics 10 0 PIPING SCHEMATICS Figure 67 Piping schematic air cooled semi hermetic compressor models Check Valve Relief Valve Service LIQUID RETURN Head Pressure LIEBERT LEE TEMP RECEIVER Control Valve l CONDENSER COIL LIEBERT LEE TEMP l wr ann HOT GAS DISCHARGE LIEBERT LEE TEMP LIQUID Sensing Bulb Cylinder Unloader s Service COMPRESSOR External Equilizer Muffler Serios Valve Expansion solenoid Sight Valve Valve Glass NOTES Schematic representation shown Do not use for specific connection locations Two refrigeration circuits provided Single refrigeration circuit shown for clarity REFRIGERANT PIPING Inverted Trap on discharge amp liquid lines to extend above base of coil by a minimum of 7 1 2 190mm FAN S
109. cally noted intermediate system high points Two refrigeration circuits provided Single refrigeration circuit shown for clarity DPNO0895 Rev 2 96 Piping Schematics Figure 70 Piping schematic water glycol with scroll compressor models For systems with drycoolers refer to 13 14 3 Drycooler Settings LIEBERT EXPANSION Optional Dual Pump System shown CUSTOMER HEAT REJECTION GLYCOL HEAT REJECTION Check Valves DRYCOOLER on Dual Pump Pressure NG T COOLING TOWER Glycol Port SZ Systems only AND PUMP Aquastat Gate Valves SYSTEM Sensing BY OTHERS Bulbs i Hose Air Vents i i Bib Shutoff Valve tipicas D Pressure Port gt Xk m Flow Switch i Supplied with Dual At Pump Systems Shutoff Valve Flow Regulating RETURN SUPPLY Valve 1 Lo RETURN SUPPLY LIEBERT DS RETURN SUPPLY and associated piping de Shutoff Valve H Hose y LIQUID 3 Way Regulating y 7 EVAPORATOR Valve Y N Bib COIL ulb Hose Bib Optional Shutoff Valve T l t Service pave External 2 Way Valve COMPRESSOR Equalizer Regulating Valve DISCHARGE CH PARADENSER CONDENSER Expansion Solenoid Sight Filter Dryer Valve Valve Glass Relief valve s supplied TO SECOND with 50Hz EU CE units rated REFRIGERATION maximum 480 PSIG 33 Bar CIRCUIT Factory Piping Components are not supplied by Field Pipi L
110. ce s 6 Check test water detection device s Air Cooled Condenser Drycooler 1 Coil surfaces and fans free of debris clean wash and straighten fins as needed ___ 2 Fan motors securely mounted 3 Motor bearings in good condition 4 Check all piping and capillaries for vibration isolation support and secure as necessary 5 Check fuses 6 Check contactors for pitting 7 Check wire connections ___ 8 Fan speed control operation __ 9 Check operational sequence thermostat setpoints ___10 Check refrigerant glycol lines for signs of leaks repair leaks as found 11 Check refrigerant level in each Liebert Lee Temp receiver ___ 12 Glycol level 13 Glycol solution 14 Motor amp draw 1 Li L2 L3 L1 and L2 on Fan Speed Control Motor 2 Li L2 L3 3 Li L2 L3 4 Li L2 L3 5 Li L2 L3 6 Li L2 L3 7 Li L2 L3 8 Li L2 L3 Glycol Pump 1 Check pump rotation ___ 2 Check for glycol leaks __ 3 Pump pressures 1 Suction Discharge 2 Suction Discharge _ 4 Amp Draw 1 Li L2 L3 2 Li L2 L3 5 Pump changeover if multiple pumps 152 HVAC Maintenance Checklist Maintenance Notes Signature Company Make photocopies for your records Compare readings information to previous maintenance worksheet To
111. ck dimensional data Y 889mm bo 78 1854mm l TOP VIEW Front of Unit 17 3 16 437mm 17 1 16 434mm 3 7 8 14 1 4 98mm seal Factory Location 403mm FRONT SECTION DPN001119 LEFT SIDE SECTION Left Front Panel Not Shown Rev 2 Xx Y Connection Size Opening Point Description in mm in mm in mm R1A Refrigerant Access Top 60 1 2 1537 1 7 8 48mm 10 1 8 x 4 1 8 257 x 105 R2A _ Refrigerant Access Bottom 59 3 8 1508mm 14 3 4 375mm 11 1 8 x 4 283 x 102 L1 Liquid Line System 1 70 1778mm 16 3 4 425 1 2 Cu Sweat L2 Liquid Line System 2 67 5 8 1718mm 16 3 4 425 1 2 Cu Sweat G1 Hot Gas Discharge 1 65 3 8 1661mm 16 5 8 422 5 8 Cu Sweat G2 Hot Gas Discharge 2 63 1600mm 16 5 8 422 5 8 Cu Sweat R3A Refrigerant Access Side 6 x 17 3 16 152 x 437 CGD Condensate Gravity Drain 3 4 FPT CPD Condensate Pump Discharge Opt 56 1 4 1429 11 1 8 283 1 2 Cu Sweat HUM Humidifier Supply Line 56 1 4 1429 9 1 8 233 1 4 Cu Sweat ECS Econ O Coil Supply 56 1423 7 5 16 186 1 5 8 Cu Sweat ECR Econ O Coil Return 56 1423 4 1 2 114 1 5 8 Cu Sweat E1 Electrical Conn High Volt 52 3 8 1330 30 762 2 1 2 E2 Electrical Conn High Volt 46 7 8 1191 30 762 2 1 2 LV1 Electrical Conn Low Volt 19 1 2 495 29 1 16 738 7 8 LV2 Electrical Conn Low Volt 19 1 2 495 30 1 2 775 7 8 LV3 Electrical Conn Low Volt 19 1 2 495 31 15 16 811 7 8
112. duit and wires into the bottom section of the Liebert DS Reheat Optional Component a Disconnect the reheat wire harness from the bottom of the contactor in the electric box b Unplug the low voltage quick connect for the reheat safety wires c Pull the conduit and wires into the unit s blower and coil assembly section Humidifier Optional Component a Disconnect the humidifier wire harness from the bottom of the contactor in the electric box b For infrared humidifiers Remove the quick connect plugs from the following low voltage connections 35 5 and 35 6 safety under pan 35 3 and 35 4 humidifier make up valve and 8 5 and 8 7 high water alarm For steam generating humidifiers Remove the quick connect plugs from the following low voltage connections 35 1 H 24H and H 24G and 35 7 and HAR 24H c Disconnect 35 3 and 35 4 from the control board d Pull the conduit and wires into the unit s blower and coil assembly section Condensate Pump Optional Component a Disconnect the condensate pump s high voltage wiring harness b Remove the low volt wires from terminal strips 24 and 55 c Pull the conduit and wires into the unit s blower and coil assembly section GLYCOOL Dual Cool Optional Component a On units with an actuator unplug the valve actuator harness at the actuator and pull the wire harness into the electric box b Disconnect the glycol sensor from the control board and pull it into the unit
113. e fans in the lowered positioned 9 Repeat Steps 3 through 8 to lower remaining fan modules Figure 40 Lowering EC fans into floor stand Steps 7 through 9 Lowered Fan Module Resting Module on Frame Onto Frame Use Removed Hex Head Screws to Secure Lowered Fan to Frame Use Removed Hex Head Screws to Secure Lowered Fan to Frame Z Brackets not present Liebert DS SECTION C C on Liebert DS DPN002037 Fan Deck and Side Panels Not Shown Page 2 Rev 4 46 EC Fans Lowering and Removing 6 2 Removing the EC Fans The EC fans in Liebert DS units can be removed for easier maintenance or for replacement A A Q WARNING Risk of electric shock and high speed rotating fan blades Can cause injury or death Disconnect all local and remote electric power supplies and verify that fan blades have stopped rotating before working within WARNING Risk of very heavy fan modules dropping downward suddenly Can cause injury or death Support fan modules before removing mounting hardware Use caution to keep body parts out of the fan modules pathway during repositioning Only properly trained and qualified personnel should work on this equipment Fan modules weigh in excess of 100 lbs 45 4kg each NOTE The Liebert DS unit should be used with the fans either in their original raised position or with the fans in their fully lowered position Suspension of fans in an intermediate position will directly affect
114. e nameplate to be sure the voltage matches available utility power Follow all local codes A WARNING Risk of improper wiring piping moving lifting and handling Can cause equipment damage injury or death Only qualified service personnel should work on this equipment Read all installation operating and safety instructions before proceeding Read and follow all warnings in this manual NOTICE Risk of improper operation Can cause damage to equipment Do not change Advanced Menu parameter settings in the Liebert iCom without first getting permission from Emerson Network Power Liebert Service Lowering this parameter to less than 100 will cause the coil to freeze on DX units will overheat the reheat components on any unit and cause condensation problems on any unit equipped with a humidifier The Liebert DS product is a single component in the facility heat removal system The system includes air distribution raised floors duct systems outdoor heat rejection condensers pumps drycoolers cooling towers piping heat rejection fluid ambient temperature etc and indoor cooling and humidity loads equipment load location outside air infiltration Proper application and maintenance of the entire system is critical to the life and reliability of the Liebert DS Good maintenance practices are essential to minimizing operation costs and maximizing product life Read and follow monthly and semi annual maintenance schedules
115. ee Sea Ae eee ae es ars cn 125 INITIAL STARTUP CHECKS AND COMMISSIONING PROCEDURE FOR WARRANTY INSPECTION 0000 oe tiie tae wees ew ee aaa wena nee A li 126 Information for Warranty Inspection Remove Power From Unit Disconnect 127 Startup Checks With Panels Removed and Main Disconnect Off o o 127 12 2 1 Inspect anid Record ata 127 Startup Td A A at ata ita 128 Commissioning Procedure With Panels On ooo ooooooooooorrro ooo 129 IWAINTENANCE or ai E A etl A AA 130 alters a A A ee eee we ed abe O A se ee IG 131 13 1 1 Filter Replacement Procedure Downflow Units 0 ccc eee eens 132 13 1 2 Filter Replacement Procedure Upflow Units 0 0 0 0 0c nooo ooo 132 if 13 2 Blower Drive System Centrifugal Fans 0 0 0 cee ena 132 13201 WU phlow Motor Access ls aa data gf dude ok 133 13 22 Belt Remova bc ohare e ato oui cee ators oat arene 133 13 2 3 Belt Installation and TensionmMg 00 0 c cece eee eens 134 13 2 4 Electronic Variable Speed Drive Inverter o ooooooo ooo 135 13 3 Blower Drive System EC Fans 135 13 3 1 Fan Impellers and BearImgs 0 0 ccc cece eee eee nnn 135 13 3 2 Protective Features sissa tee ae a de hore 135 13 4 Hlumidifier Infrared nuunuu nunne 136 13 4 1 Cleaning Humidifier Pan and Float Switch 0 0 0 0 ccc eee eens 136 13 4 2 Changing Humidifier Lamps 0000 cc ene ene e een nes 137 13 5 Humidifier Ste
116. eed 28VAC Change primary tap if necessary 5 Push the On button Blower will start and the On lamp will light 6 Check fan rotation if not correct make necessary changes to the line side of the unit disconnect with power Off The unit is phased at the factory 7 Unit will operate at the factory set configuration for all component operations The operator may set the values for temperature and humidity setpoints the proportional band and the deadband The user menu may be used to set alarms and other control functions Refer to the Liebert iCOM user manual SL 18835 for large or small display operation and settings NOTICE Risk of improper operation Can cause damage to equipment Do not change Advanced Menu parameter settings in the Liebert iCom without first getting permission from Emerson Network Power Liebert Services Lowering this parameter to less than 100 will cause the coil to freeze on DX units will overheat the reheat components on any unit and cause condensation problems on any unit equipped with a humidifier 8 Turn Off the unit with the On Off button 9 Remove power from main unit disconnect and main breaker and check with a meter 10 Replace all fuses removed in Step 2 11 Restore power to the unit 12 Turn On the main unit disconnect switch 13 Press the On button 14 Check and record the current draw on all line voltage components and match with serial tag NOTE Q Electric Reheat See Warning o
117. enoid s Models 028 035 and 042 When replacing a digital scroll compressor digital solenoid valve and coil must be replaced Compressor and valve kit are shipped separately Valve kit must be field brazed to top of compressor in proper orientation and supported with original factory bracket Models 053 070 and 077 When replacing a digital scroll compressor digital solenoid coil must be replaced Compressor and coil kit are shipped separately 13 11 3Compressor Replacement Procedure 13 12 13 13 1 Disconnect power and follow all warnings at front of this manual Attach suction and discharge gauges to access fittings Front seat service valves to isolate the compressor Reclaim charge from compressor Remove marked pressure transducer and discharge pressure switch Disconnect all electrical connections A wN Detach service valves from compressor Remove failed compressor If required follow compressor manufacturer s suggested clean out procedures Install replacement compressor and make all connections Replace gaskets or seals on service valves Replace unloading solenoid 9 Evacuate charge and operate per 9 3 Dehydration Leak Test and Charging Procedures for R 407C and R 22 10 Semi hermetic only see 5 3 Semi Hermetic Compressor Spring Isolation System for compressor spring adjustment NOTICE Risk of improper component reinstallation Can cause equipment damage Identify and mark location of suction
118. ent Disconnect reheat wire harness from bottom of contactor in electric box Unplug low voltage quick connect for reheat safety wires Pull conduit and wires into filter and coil assembly section of unit Humidifier optional component a Disconnect the humidifier wire harness from the bottom of the contactor in the electric box For infrared humidifiers Remove the quick connect plugs from these low voltage connec tions 35 5 and 35 6 safety under pan 35 3 and 35 4 humidifier make up valve and 8 5 and 8 7 high water alarm For steam generating humidifiers Remove the quick connect plugs from the following low voltage connections 35 1 H 24H and H 24G and 35 7 and HAR 24H b Disconnect 35 3 and 35 4 from the control board c Pull the conduit and wires into the unit s filter and coil assembly section Condensate pump optional component Disconnect condensate pump high voltage wire harness Remove low volt wires from terminal strip 24 and 55 Pull conduit and wires into filter and coil assembly section of unit Glycool Dual Cool optional component On units with actuator unplug valve actuator harness at actuator and pull wire harness into electric box Disconnect glycol sensor from control board and pull into filter and coil assembly section of unit Smoke detector optional component For units with smoke detector remove cover on smoke detector Remove plug connector from smoke detector and pull into electric box Re
119. er Glycol GLYCOOL Dual Cool Water Glycol GLYCOOL Dual Cool Compressor Assembly 1320 599 1320 599 1200 544 1200 544 Blower 8 Electric Box Assembly 1080 490 1080 490 1080 490 1080 490 Filter amp Coil Assembly 970 440 1300 590 970 440 1300 590 Electrical Connections 8 0 ELECTRICAL CONNECTIONS Three phase electrical service is required for all models Electrical service must conform to national and local electrical codes Refer to equipment nameplate regarding wire size and circuit protection requirements Refer to electrical schematic when making connections Refer to Figure 61 for electrical service entrances into unit A manual electrical disconnect switch should be installed in accordance with local codes and distribution system Consult local codes for external disconnect requirements A A 4 WARNING Risk of electric shock Can cause injury or death Disconnect local and remote power supplies before working within Use voltmeter to make sure power is turned off before making any electrical connections Before proceeding with installation read all instructions verify that all the parts are included and check the nameplate to be sure the voltage matches available utility power 50Hz Models Only Re install all terminal covers before connecting power to the unit Failure to install these covers exposes high voltage terminals Follow all local codes WARNING Risk of impr
120. erant gas See blower outlet and deck dimensional data 1 2 13mm 35 and liquid line connection points 889mm submittal page DPN001120 for 152mm 17 3 16 20 1 16 L1 L2 437mm 509mm t COC 3 7 8 a62mm semm 15 7 8 403mm Left Side Section View 15 3 16 386mm 4 102mm 22 1 2 572mm All dimensions from rear corner of unit including panels y L1 L2 Gt G2 16 7 16 418mm ZZZZZZXZ LID D A ALLA L e 86 2184mm Top View Front of Unit Factory Location Front Section View Left Front Panel Not Shown DPN001114 Rev 02 Xx Y Connection Size Opening Point Description inches mm inches mm inches mm R1A Refrigerant Access Top 60 11 16 1542 1 7 8 48 22 1 2 x 15 3 16 572 x 386 R2 A Refrigerant Access Bottom 63 1600 13 13 16 351 16 7 16 x 4 418 x 102 L1 Liquid Line System 1 79 3 16 2011 16 3 4 425 1 2 Cu Sweat L2 Liquid Line System 2 76 1 2 1943 16 3 4 425 1 2 Cu Sweat G1 Hot Gas Discharge 1 73 7 8 1876 16 3 4 425 5 8 Cu Sweat G2 Hot Gas Discharge 2 70 1 8 1780 16 3 4 425 5 8 Cu Sweat R3A Refrigerant Access Side 6 x 17 3 16 152 x 437 CGD Condensate Gravity Drain 3 4 FPT CPD Condensate Pump Discharge Opt 56 1 4
121. ert DS for Transport Figure 49 Component dimensions downflow air cooled 105kW 30 ton semi hermetic compressor models forward curved and EC fan Drawing views are simplified with panels removed to show overall dimensions See disassembly and handling instructions in installation manual a YES Q NO gt A A Filter and Electric Box Assembly 39 991 mm 41 11 16 1059mm 76 1930mm Assembled Height 59 7 16 1510mm L aa _ 26 Lo Lo 105 2667mm 838mm 660mm 131 3327mm DPN001057 Assembled Length Rev 1 Table 35 Component weights downflow air cooled 105kW 30 ton semi hermetic compressors forward curved and EC fan Dry Weight Ib kg Approximate Includes Panels Forward Curved Fans EC Fans Component Air Cooled Dual Cool Air Cooled Dual Cool Compressor Assembly 950 432 950 432 950 432 950 432 Filter amp Electric Box Assembly 270 123 270 123 270 123 270 123 Blower amp Coil Assembly 1820 827 2180 991 1560 708 1915 870 61 Disassembling the Liebert DS for Transport Figure 50 Component dimensions downflow air cooled 105kW 30 ton scroll compressor models forward curved and EC fan Drawing views are simplified with panels removed to show overall dimensions See disassembly and handling instructions in installation man
122. es Supplied on Dual Cooling Systems only four pipe system 113 Piping Schematics Figure 87 Primary connection locations downflow water glycol GLYCOOL 105kW 30 ton all compressor models A NOTE Drawing not to scale Tolerance on all piping dimensions is 1 2 18mm FRONT VIEW SECTION A A A ALL DIMENSIONS FROM REAR CORNER OF UNIT INCLUDING PANELS X O 8 15 7 8 BLOWER BLOWER BLOWER 203mm 403mm OUTLET OUTLET OUTLET TYP EcR TYP SO 9CD 131 3327mm DPN001015 Rev 3 Xx Y Connection Size Opening Point Description in mm in mm in mm Ww Water Glycol GLYCOOL Access 125 15 16 3199 9 229 3 1 2 x 8 89 x 203 WS Water Glycol GLYCOOL Supply 127 7 8 3248 10 1 16 256 2 1 8 Cu Sweat WR Water Glycol GLYCOOL Return 127 7 8 3248 13 1 4 337 2 1 8 Cu Sweat eat or no humidifier 63 1316 15129 90 1762 SER CD Condensate Drain age 83 13 16 2129 30 762 1 1 4 FPT steam generating humidifier W Optional Pump 83 13 16 2129 30 762 1 2 Cu Sweat HUM Humidifier Supply Line 102 3 4 2610 31 3 4 806 1 4 Cu Sweat ECS Econ O Coil Supply 101 7 8 2588 29 737 2 5 8 Cu Sweat ECR Econ O Coil Return 94 9 16 2402 29 737 2 5 8 Cu Sweat E1 Electrical Conn High Volt 98 1 4 2496 30 762 2 1 2 E2 Electrical Conn High Volt 88 7 16 2246 30 762 2 1 2 LV1 Electrical Conn
123. es shoes and glasses should attempt to move the unit lift it remove packaging or prepare the unit for installation NOTICE Risk of overhead interference The unit may be too tall to fit through a doorway while on the skid Measure the unit and doorway heights and refer to the installation plans to verify clearances prior to moving the unit If the Liebert DS is too large to fit through doors halls or other tight spaces the unit can be partly dismantled as detailed in 7 0 Disassembling the Liebert DS for Transport NOTICE Risk of damage from forklift Keep tines of the forklift level and at a height suitable to fit below the skid and or unit to prevent exterior and or underside damage NOTICE Risk of damage from forklift Keep tines of the forklift level and at a height suitable to fit below the skid and or unit to prevent exterior and or underside damage NOTICE Risk of improper storage Keep the Liebert DS upright indoors and protected from dampness freezing temperatures and contact damage Spreader Bars and Slings Figure 32 Equipment recommended for handling Liebert DS Pallet Forklift Jack Piano Jacks 37 Equipment Inspection and Handling If possible transport the Liebert DS with a forklift or pallet jacks If that is not possible use a crane with belts or cables slings and spreader bars If using a forklift or pallet jack make sure that the forks if adjustable are spread to the widest
124. external to the unit Drain line may contain boiling water Select appropriate drain system materials The drain line must comply with all local codes Supplied on Dual Cooling Systems only four pipe system 111 Piping Schematics Figure 85 Primary connection locations downflow air cooled 105kW 30 ton all compressor models A A ALL DIMENSIONS FROM NOTE Drawing not to scale FRONT VIEW REAR CORNER OF UNIT estar INCLUDING PANELS all piping dimensions is 1 2 13mm SECTION A A x 15 11 16 BLOWER BLOWER BLOWER 398mm OUTLET OUTLET OUTLET eo 8 as 889mm E 16 7 16 418mm Reve dee FRONT OF UNIT 131 3327mm DPN001014 Rev 3 Xx Y Connection Size Opening Point Description in mm in mm in mm R Refrigerant Access 109 2769 15 3 4 400 16 7 16 x 4 418 x 102 L1 Liquid Line System 1 121 3 4 3092 16 3 4 425 5 8 Cu Sweat L2 Liquid Line System 2 118 1 8 3000 16 3 4 425 5 8 Cu Sweat G1 Hot Gas Discharge 1 118 1 4 3004 14 1 4 362 1 1 8 Cu Sweat G2 Hot Gas Discharge 2 115 5 8 2937 14 1 4 362 1 1 8 Cu Sweat a or no humidifier 8313 162129 30 762 J Aad a ON Ene EEN to 83 13 16 2129 30 762 1 1 4 FPT steam generating humidifier W Optional Pump 83 13 16 2129 30 762 1 2 Cu Sweat HUM Humidifier Supply Line 102 3 4 2610 31 3 4 806 1 4 Cu Sweat ECS
125. fier 46 1168 ener ea oa CD Condensate Drain 46 1168 29 1 2 749 1 1 4 FPT steam generating humidifier W Optional Pump 46 1168 29 1 2 749 1 2 Cu Sweat HUM Humidifier Supply Line 53 1 2 1359 29 737 1 4 Cu Sweat ECS Econ O Coil Supply 54 7 8 1394 22 9 16 573 1 5 8 Cu Sweat ECR Econ O Coil Return 49 3 8 1254 30 3 4 781 1 5 8 Cu Sweat E1 Electrical Connection High Volt 55 1 2 1410 31 1 4 794 2 1 2 E2 Electrical Connection High Volt 52 7 16 1332 31 1 4 794 2 1 2 LV1 Electrical Connection 2 1 4 57 27 686 7 8 LV2 Electrical Connection Low Volt 2 1 4 57 29 737 7 8 LV3 Electrical Connection Low Volt 2 1 4 57 31 787 7 8 B Blower Outlet 21 15 16 557 18 1 16 459 18 3 4 x 16 1 16 476 x 408 Field pitch condensate drain line a minimum of 1 8 3 2mm per foot 305mm All units contain a factory installed condensate trap Do not trap external to the unit Drain line may contain boiling water Select appropriate drain system materials The drain line must comply with all local codes 104 Piping Schematics Figure 78 Primary connection locations downflow water glycol GLYCOOL 28 42kW 8 12 ton all compressor models NOTE Drawing not to scale Tolerance on all piping dimensions is 1 2 138mm ALL DIMENSIONS FROM REAR CORNER OF UNIT A A INCLUDING PANELS FRONT VIEW SECTION A A de BLOWER dos Hs n y OUTLET 3
126. forward curved and EC fan 0 ce eee nes Component dimensions downflow water glycol GLYCOOL 53 77kW 15 22 ton all compressor models forward curved and EC fan 0 0 ee eee eens Component dimensions downflow air cooled 105kW 80 ton semi hermetic compressor models forward curved and EC fam Component dimensions downflow air cooled 105kW 30 ton scroll compressor models forward curved and EC fan Component dimensions downflow water glyco GLYCOOL 105kW 30 ton forward curved and EC fan all compressor models forward curved and EC fan Component dimensions upflow air cooled 28 42kW 8 12 ton semi hermetic compressor models iii A A A A E A A A TS Component dimensions upflow air cooled 28 42kW 8 12 ton scroll digital scroll compressor models 0 a a a Aa a ee Oe eS Component dimensions upflow water glycol GLYCOOL 28 42kW 8 12 ton all compressor models 25 goede eee dene oe toh Mee Bd eo BLES CR ek eee vb Oc og Fea eR Ee aed ender Component dimensions upflow air cooled 53 77kw 15 22 ton semi hermetic compressor models 344 iii dea oh lich Bias Phe a a ee eed Component dimensions upflow air cooled 53 77kw 15 22 ton scroll digital scroll compressor models ssc sais dessa eds e AR Ia a ab Edo Seka ED le te Component dimensions upflow water glycol GLY COOL 53 77kw 15 22 ton all compressor models yri ore Paw in Reed wo atin PRES Se Ee Re ER ta did Comp
127. g o o 41 5 3 Semi Hermetic Compressor Spring Isolation System oooooooooooooroo o 43 5 4 Placing the Unit on a Floor Saad A a 43 6 0 EC FANS LOWERING AND REMOVING 0000 cece eee eee eee eee eee 44 6 1 Lowering the EC Fans into the Floor Stand 0 0 0 0 ccc cee ene 44 6 2 Removing the EC Fans 47 7 0 DISASSEMBLING THE LIEBERT DS FOR TRANSPORT 22 000s eee o 50 7 1 Required Equipment siiis ei A a Ay oe da a a is 50 7 2 Disassembly Downflow Units o o 51 7 2 1 Remove the Compressor Assembly 0 anunn cece eect n eens 52 7 2 2 Remove the Filter and Electric Box Assembly 0 000 ccc eee eee 53 7 3 Reassembly Downflow UnitS o 53 7 3 1 Reconnecting Piping Charging and Replacing Panels 0 0 c cece eens 54 7 4 Reassembly Checklisti iii 2s tates Sad edi ead Lace ie bh OS Bed SE HRA SS 54 7 5 Disassembly Upflow Units 00 rro 64 7 5 1 Remove Compressor Assembly 65 7 5 2 Remove Blower and Electric Box Assembly o oooooooooooooorro oo o o 65 7 6 T T 8 0 8 1 9 0 9 1 9 2 9 3 10 0 11 0 11 1 11 2 11 3 11 4 12 0 12 1 12 2 12 3 12 4 13 0 13 1 Reassembly Upflow Unite ssns srera tet k een RGA pa RaT 66 Reassembly Checklist o ooooooooooooooomrrr 66 ELECTRICAL CONNECTIONS ci n coca a e Wis wk ewe ee ee Raa ee 76 Variable Speed Drive snes gapida Paw he E DS Sed be holed RS 8
128. g dimensions downflow 53 77kW 15 22 ton models Dimensions in mm Height in mm Model A B Cc D Turning Vane 9 229 4 111 Air Cooled Semi Hermetic Models and 108 26 All Water Glycol GLYCOOL Models 2743 660 12 305 7 4187 15 381 10 264 18 457 13 340 Air Cooled Scroll Models and 97 15 Air Cooled Digital Scroll Models 2464 381 21 533 16 416 24 610 19 492 28 Liebert DS Dimensions and Weights Figure 24 Floor stand and floor planning dimension downflow 53 77kW 15 22 tons models with EC fans A Piping access area 32 813mm 800mm Center Feet 3 4 a 62 3 4 1594mm 95 1 2 2426mm Support Feet Centers 3 4 PL 2464mm 19mm 7 8 23mm n 2 1 L k 3 76mm 25mm 838mm 98 1 2 2502mm NOTES 1 This floor stand should be used when EC fans are intended to be C lowered under a raised floor The standard Liebert DS floor stand can be used if the fans are to remain in their original raised position 2 Right side of paneled unit is flush with right side of floor stand All other paneled sides overhang floor stand 1 25mm 3 The floor stand used with EC units is not symmetrical and its E 35 889mm a orientation to the Liebert DS is critical for lowering the EC fans Overall Depth Unless the floor stand is installed in the correct position the blowers will not lower into the floor stand 4 Jack and
129. ged coil fins and correct Do not permit snow to accumulate around or under outdoor unit Periodically consider commercial cleaning of coil surface Inspect fans motors and controls for proper operation Check all piping and capillaries for proper support Inspect for leaks 13 8 Reheat Electric Reheat Three Stage and SCR Inspect and clean reheat elements Inspect and tighten support hardware 13 9 Thermostatic Expansion Valve 13 9 1 13 9 2 The Thermostatic Expansion Valve TEV performs one function It keeps the evaporator supplied with enough refrigerant to satisfy load conditions It does not effect compressor operation Proper valve operation can be determined by measuring superheat The correct superheat setting is between 10 and 20 F 12 and 6 C If too little refrigerant is being fed to the evaporator the superheat will be high if too much refrigerant is being supplied the superheat will be low Determine Suction Superheat To determine superheat OF ee Nee Measure the temperature of the suction line at the point the TEV bulb is clamped Obtain the gauge pressure at the compressor suction valve Add the estimated pressure drop between the bulb s location and the suction valve Convert the sum of the two pressures to the equivalent temperature Subtract this temperature from the actual suction line temperature The difference is superheat Adjust Superheat Setting with the TEV To adjust the superhe
130. gerant lines clamps secure no rubbing no leaks __ 2 Check for moisture sight glass Water Cooled Condensers 1 Check water regulating valve operation Cap tubes not rubbing 2 3 Check for water glycol leaks 4 Entering water temperature 5 Leaving water Drain Piping 1 Check for free running drain system 2 Clear out obstructions and material buildup on tubing walls 3 Check for leaks 4 Check for tubing kinks or damage Compressor Section 1 Check oil level __ 2 Check for oil leaks 3 Check compressor mounts springs bushings 4 Cap tubes not rubbing 5 Check wire connections inside compressor box __ 6 Compressor operation vibration noise __ 7 Suction Pressure Circuit 1 Circuit 2 __ 8 Discharge Pressure Circuit 1 Circuit 2 9 Superheat Circuit 1 Circuit 2 ___ 10 Low pressure switch cut out Circuit 1 Circuit 2 ___ 11 Low pressure cut in Circuit 1 Circuit 2 12 High pressure cut out Circuit 1 Circuit 2 ___ 13 Amp draw Circuit 1 _ a L1L2L3 Circuit 2 _ a L1L2L3 Electrical Panel __ 1 Check fuses __ 2 Check contactors for pitting __ 3 Check wire connections 151 HVAC Maintenance Checklist Controls __ 1 Check Verify Control Operation Sequence __ 2 Check humidifier high water alarm operation 3 Check operation of the air safety switch __ 4 Check setting operation of the filter clog switch ___5 Check test changeover devi
131. he Drain Valve Always clean the drain valve before installing a new cylinder Figure 104 shows an exploded view of the drain valve for reference to clean it 1 2 IDO Remove old cylinder as previously described Note that the ring terminal for the drain valve green ground wire is sandwiched between the drain valve and the drain pan Remove the two screws securing the drain valve body to the drain pan Remove the hose clip and hose connection from the drain valve body Drain valve assembly is now free to be taken to a sink for disassembly and cleaning Remove the snap fit red cap from the coil assembly and slide the coil off the actuator Loosen actuator using a wrench and unscrew from the plastic body Clean the exposed core spring and plastic drain valve pot Reinstall in the reverse order NOTE Be cautious when putting the spring back into the plunger the taper end of the spring must be installed toward the solenoid Hand tighten the actuator back into place then secure it by using a wrench to turn it a quarter of a turn Clean out the end of the hose then reconnect it to the drain valve body with the clamp Fit mounting screws back through the drain valve body one through ring terminal on the green wire Figure 104Drain valve assembly Actuator Male Slip On SS n Poa sisi J Connection Tabs Holding Coil 140 Maintenance Installing the New Canister 1 The
132. hermetic compressors Normal operating oil level is 1 4 to 3 4 up the sight glass After a compressor has been idle for an extended length of time foaming will usually be present when compressor first starts Wait until compressor has been operating for at least five minutes before viewing the oil level If oil level is low the cause must be corrected and oil level returned to its proper level 13 10 3Scroll and Digital Scroll Compressors Hermetic scroll and digital scroll compressors do not have an oil sight glass NOTE Refer to 9 2 2 Scroll and Digital Scroll Additional Oil Requirements for approved oil types and additional oil required based on the system s refrigerant charge 13 11 Compressor Replacement Replacement compressors are available through your local Emerson office Compressors are shipped in reusable packaging If unit is under warranty complete and include Liebert Service Credit Application LSCA with the compressor that is being returned The original compressor should be returned in the same packaging 13 11 1Compressor Motor Burnout If a burnout has occurred a full system clean out is required if not compressor and system problems will continue For clean out warnings and procedures see Copeland Application Engineering Bulletin 24 1105 Principles of Cleaning Refrigeration Systems or Carlyle Service Guide Literature 020 611 145 Maintenance 13 11 2Digital Compressor Unloading Sol
133. hes in Off high water sensor drawing similar current sequence activated Low water conductivity Are power wires connected to proper terminals on the cylinder Color coding Foaming Four Check water level in the cylinder it should be about three fourths full End of cylinder life change Check for foaming if water level lower or cylinder life shorter than flashes in Off li d sequence cylinder expected i Change cylinder clean drain valve Table 63 Steam generating humidifier troubleshooting guide Unit in call for humidification humidifier will not operate Symptom power Possible Cause Humidifier not receiving Check or Remedy Verify ON OFF DRAIN switch is in ON position Check fuses or CB s and replace or reset if necessary Humidifier Contactor pulled in but no water enters canister No water available to unit Check external water shut off valves Clogged fill line strainer Clean or replaced fill line strainer Excessive arcing in canister defective Drain valve clogged or Verify that drain valve operates freely when activated Clean valve and replace if defective Flush canister several times and replace if arcing persists Improper water supply If water is commercially softened reconnect humidifier to raw water supply drain canister and restart If connected to hot water supply reconnect to cold water Insufficient drain rate Verify that drain valve operates free
134. ical Connections Figure 61 Electrical field connections for upflow and downflow models Liebert IntelliSlot Housing OVERCURRENT PROTECTION DEVICES pry 29 ee zz O sonz CONTACTORS amp RELAYS Downtlow 3 AND OVERLOAD PROTECTORS DOWNFLOW LOW VOLTAGE SECTION Note Typical orientation of components shown Component location varies by option and unit size 9 w o T Ey 9 CAUTION A IO OOO Ol IDI CIOIOOOOOOOo UPFLOW Risk of broken or shorted low voltage so 75 76 94 95 96 97 91 92 93 80 811 11 12177178 wiring Field installed low voltage wiring Maa AAAA palito to owing i e e o9 00 N E c AAAA gaguiaaiaaaaaaaaa 84 85 70380378388 37 38 24 5 55 56 70 71 72 73 BAA O AOIDIOIOIOIOIOIOICIOIOIOIO D Refer to Table 47 on page 78 for keys to numbered items Point of Hinged Low Voltage Electric Box UPFLOW LOW VOLTAGE SECTION DPNO00806 Rev 4 77 Electrical Connections Table 47 Electrical field connection descriptions STANDARD ELECTRICAL CONNECTIONS 1 Primary high voltage entrance 2 50 64mm 1 75 44mm 1 375 35mm 2 Secondary high voltage entrance 2 50 64mm 1 75 44mm 1 375 35mm diameter concentric knockouts in top of box 3 Primary low voltage entrance Quantity 3 1 125 28mm diameter knockouts in bottom of unit 4 Secondary low voltage entrance Quantity 3 1
135. iebert but are recommended for Ae Iping proper circuit operation and Optional Factory Piping maintenance Field installed at highest point in Y Service Schrader Access Connection No Valve Core system on return line to pumps Service Schrader Access Connections With Valve Core ws Kopat at tops ofall neste end any intermediate system high points Note Schematic representation shown This schematic does not imply or define elevations and DPN000896 component location unless specifically noted REV 3 Two refrigeration circuits provided Single refrigeration circuit shown for clarity 97 Piping Schematics Figure 71 Piping schematic GLYCOOL semi hermetic compressor models LIEBERT For systems with drycoolers HEAT REJECTION refer to 13 14 3 Drycooler Settings DRYCOOLER Glycol Aquastat Sensing Bulbs Shutoff Valve LIEBERT DS UNIT ECON O COIL and associated piping LIQUID 3 Way Qu Chilled Glycol Sensing Bulb EVAPORATOR Valve COIL Cylinder Unloader s Thermistor Service Valve COMPRESSOR Muffler External Service Equalizer Valve DISCHARGE PARADENSER CONDENSER o4 Expansion Solenoid Sight Filter Valve Valve Glass Dryer EXPANSION TANK Hose Bib Shutoff Valve 3 Way Regulating Valve Optional Dual Pump System shown GLYCOL Meno Valves o
136. ifier supply line for 1 gpm 3 8 l m with a minimum water pressure of 20 psi 138kPa Do not supply de ionized water to the humidifier Humidifier Supply Water Optional Steam Generating 1 4 supply line maximum water pressure is 145psi 1000kPa Fill valve is sized for pressure range of 30 to 120psi 207 827kPa Do not supply steam generating humidifier with softened water Do not use hot water source Water conductivity must be in the range of 330 750 micro siemens Requirements of Systems Using Water or Glycol These guidelines apply to field leak checking and fluid requirements for field piping systems including Liebert chilled water hot water condenser water or glycol GLYCOOL and drycooler circuits General Guidelines Equipment damage and personal injury can result from improper piping installation leak checking fluid chemistry and fluid maintenance Follow local piping codes safety codes Qualified personnel must install and inspect system piping Contact a local water consultant regarding water quality corrosion protection and freeze protection requirements Install manual shutoff valves at the supply and return line to each indoor unit and drycooler to permit routine service and emergency isolation of the unit NOTICE Risk of frozen fluids Can cause equipment damage and building damage Freezing system fluids can rupture piping Complete system drain down cannot be ensured When the field piping or unit may be exp
137. ilding evacuation and mobilization of emergency fire and rescue services Startup operation of optional electric reheat elements may activate facility alarm and fire suppression system Prepare and take appropriate steps to manage this possibility Activating reheat during initial startup may burn off particulates from electric reheat elements Check the steam generating humidifier electrode plugs to ensure that they are pressed firmly onto the pins Loose connections will cause the cylinder and plugs to overheat Before beginning initial startup checks make certain that unit was installed according to the instructions in this manual All exterior panels must be in place NOTICE Risk of improper electrical connection of three phase input power Can cause unit damage Service technicians should use a gauge set on the Liebert DS system during the initial startup to verify that the three phase power is connected properly The EC fans are not a reliable indicator of proper connection The blowers will rotate the same direction regardless of the three phase power input Confirm that all items on 11 0 Checklist for Completed Installation have been done Locate Liebert DS Warranty Inspection Check Sheet in unit electric panel Document number SAFM 8542 29 Complete Liebert DS Warranty Inspection Check Sheet during startup Document number SAFM 8542 29 Forward the completed Liebert DS Warranty Inspection Check Sheet t
138. ill however assume the corrosivity of the water from which it is prepared and may become increasingly corrosive with use if not properly inhibited NOTICE Risk of fluid leaks from tubing and piping corrosion Can cause serious equipment and building damage Idle fluid allows the collection of sediment that prevents the formation of a protective oxide layer on the inside of tubes Keep unit switched ON and system pump operating 84 Piping 9 2 Leak Checking of Unit and Field Piping Liebert unit fluid systems are factory checked for leaks and may be shipped with a nitrogen holding charge Liebert unit fluid circuits should be checked for leaks at installation as described below A NOTE During leak checking of field installed piping Emerson recommends that the unit be isolated using field installed shutoff valves When the Liebert units are included in a leak test use of fluid for pressure testing is recommended When pressurized gas is used for leak testing the Liebert unit the maximum recommended pressure is 30 psig 2 bars and tightness of the unit should be verified by pressure decay over time lt 2 psig hour 0 3 bars hour or sensing a tracer gas with suitable instrumentation Dry seals in fluid valves and pumps may not hold a high gas pressure Refrigeration Piping A A WARNING Risk of explosive discharge from high pressure refrigerant Can cause injury or death This unit contains fluids and or gases
139. imensions downflow water glycol GLYCOOL 28 42kW 8 12 ton all compressor models Condenser Cleanout Access 56 7 8 Openin 1445mm p id Notes Filters are accessible through top of unit only Downflow electrical 24 3 8 connections can be made 619mm from top or bottom of unit Opening F 3 4 Bezels O 19mm Required for condenser cleanout Secondary Tonder Top View Fluid Piping Entrance Secondary Entrance a Minimum required for filter replacement Secondary Entrance Low Volt Connections High Volt Connection s 86 2184mm 76 1930mm pa 864mm Shaded area indicates a recommended minimum clearance for component DPN000894 Front View access Bi m ne 85 2159mm Meva Table 5 Weights for downflow water glycol GLYCOOL 28 42kW 8 12 ton all compressor models Dry Weight Ib kg Approximate Scroll or Digital Scroll Compressor Compressor Type Model 028 035 042 f Water Glycol 1930 877 Semi Hermetic Compressor GLYCOOL Dual Cool 2080 945 Water Glycol 1780 809 877 GLYCOOL Dual Cool 1930 877 13 Liebert DS Dimensions and Weights Figure 9 Cabinet and floor planning dimensions downflow air cooled 53 77kW 15 22 ton semi hermetic compressor models Second Refrigerant Piping Entrance 80 Opening 2032mm Notes Filters are accessible through top of unit onl y Downflow
140. in place 3 Use spreader bars or a similar device and padding to ensure the Liebert DS will not be damaged when the unit is lifted Lifting will force the slings toward the Liebert DS and the slings may damage the unit unless it is properly protected 4 Remove the lag bolts from the bracket securing the Liebert DS to the shipping skid 5 Remove the brackets NOTE Depending on final installation location the skid may need to remain under the unit Therefore the lag bolts and brackets would not yet be removed 6 Lift the Liebert DS off the skid 7 Move the skid from under the unit 41 Equipment Inspection and Handling Sling Lifting 181659P1 Rev 5 Equal Distance Equal Distance 42 CENTER OF GRAVITY Figure 37 Using rigging to lift Liebert DS off skid Equipment Inspection and Handling 5 3 Semi Hermetic Compressor Spring Isolation System Shipping blocks under all semi hermetic compressors must be removed and the springs must be adjusted before startup 1 Loosen nuts at each of the four compressor feet and remove the two shipping blocks 2 Beginning with one compressor foot retighten nut until the washer under the nut can no longer be rotated by finger 3 Loosen the nut half a turn The washer will be slightly
141. ing open low voltage electric box to gain access to the motor Figure 98 Upflow motor access Deadfront Low Voltage Electric Box aches DPN001221 Lateral Support Rev 0 13 2 2 Belt Removal 1 Disconnect power to unit Do not pry the belts off sheave or pulley 2 Refer to instruction labels on unit near motor base 3 Turn adjustment nut see Figure 99 counterclockwise left to loosen belts and bring motor base internal spring out of compression 4 Remove belts 133 Maintenance 13 2 3 Belt Installation and Tensioning 1 Select the appropriate replacement of belts matched set and position on drive package To maximize performance and reliability of Liebert DS equipment use only Liebert belts Contact your local Emerson representative for replacement belts Ensure pulley grooves are properly aligned If adjustment is required loosen do not remove four nuts in adjustment slots see Figure 99 holding motor base to unit frame and slide motor base assembly into alignment Tension belts by turning adjustment nut clockwise right until motor base carriage stops moving downward Ensure minimum 1 2 12 7mm clearance exists from motor base carriage to base front flange see Figure 99 If the clearance is less than 1 2 12 7mm select shorter belts Mark the adjustment nut and rotate clockwise right five additional full turns This sets internal spring for proper belt tension no readjustment
142. installation location Reassembly Downflow Units 1 od 10 11 Replace the top section Make sure to clear the Schrader valves on the coil header Reconnect the filter and electric box assembly to the blower and coil assembly using thread cutting bolts Torque the bolts to 225 in lb 25Nm Reattach the evaporator top cover plate there are eight screws on each side Reattach the filter support plate to the filter and electric box assembly there is one screw on each side Reattach the tags to the Schrader fittings on top of the coil headers Replace the compressor section Insert all compressor thread cutting bolts before tightening any of the bolts Reinstall the pull bar to support the accent panel Reattach the low voltage plugs in the compressor section Reconnect the wiring for the compressor fan motor reheat humidifier condensate pump smoke detector and air sail switch Reattach the sensing tube to the top of the smoke detector On GLYCOOL and dual cool units reattach the plug connection at the actuator and reroute the sensor wire back through the electric box and onto the control board 53 Disassembling the Liebert DS for Transport 7 3 1 7 4 Reconnecting Piping Charging and Replacing Panels 1 Pr wn OMNIA M 10 Piping must be reassembled in accordance with local codes Move insulation and plastic bushings away from the brazing area Wrap piping with wet cloths Use coppe
143. ions 18 Unsweat or cut all copper water pipes that interconnect unit sections 19 Immediately cap off and seal all piping that has been cut including the suction and liquid lines the humidifier supply line and the condensate discharge line if applicable as well as fluid piping on GLYCOOL and dual cool units 7 5 1 Remove Compressor Assembly 1 Secure the compressor wire harness to the compressor assembly 2 Remove the 10 thread cutting bolts holding compressor section together a b A Begin removing bolts at the bottom of the Liebert DS and progress toward the top Use this method for the front and back bolts Stabilize the compressor section before removing the top middle bolt NOTICE The compressor section 1s top heavy and has a small base It must remain upright Do not lay the compressor section on its side during or after removing it from the Liebert DS Do not remove the shipping blocks from the semi hermetic compressors until the Liebert DS is fully reassembled and ready for installation NOTE Emerson recommends using piano jacks when moving this section 7 5 2 Remove Blower and Electric Box Assembly 1 Remove the motor access plate from right end of unit This will provide a place to grasp the blower and electric box assembly and move it Remove the coil access plates on the left side of the unit for clearance when brazing the suction and discharge lines 2 Remove the thread cutting bolts holding the un
144. is ambient temperature range the VFD Control Condenser must be used with digital scroll indoor units and can be used for energy savings with any Liebert DS indoor unit Variable Fan Speed Control Piping Two discharge lines and two liquid lines must be field installed between the indoor unit and the outdoor condenser See Figures 67 and 69 for details Variable Fan Speed Control Materials Supplied e Built in pre wired condenser control box Air Cooled condenser Piping access cover to be reinstalled when piping is complete Bolts four per leg 3 8 x 5 8 Terminal block for two wire 24V interlock connection between unit and condenser Condenser legs four with 1 fan 2 fan and 3 fan models six with 4 fan models Variable Fan Speed Control Leak Check and Evacuation Procedure Proper leak check and evacuation can be accomplished only with all system solenoid valves open and check valves accounted for NOTE Q Systems with scroll or digital scroll compressors include a factory installed check valve and an additional downstream Schrader valve with core in the compressor discharge line Proper evacuation of the condenser side of the compressor can be accomplished only using the downstream Schrader valve See piping schematic Figures 67 and 69 1 If unit power is available open the unit liquid line solenoid valves using the evacuation function for System 1 and System 2 in the diagnostic section of the Liebert iCOM control refer t
145. is spun closed from Glycol cooled units are factory charged and the factory and contain a nitrogen holding tested Field installed piping is required from the charge Each installation requires refrigerant unit to the drycooler and pump package piping to a condenser Ges GLYCOOL Water Cooled GLYCOOL units are factory charged and tested Field installed Water cooled units are factory charged and piping is required from the unit to the drycooler and pump tested Field installed water piping is package An additional coil is included for use when fluid required from the unit to the cooling tower temperatures are sufficiently low below room temperature Cooling is provided by circulating cold glycol through this second coil reducing compressor operation Dual Cool This system has all of the features of a compressorized system but adds a second cooling coil that is connected to a source of chilled water Cooling is provided by circulating water through this second coil and reducing compressor operation Pre Installation Guidelines 3 0 PRE INSTALLATION GUIDELINES 3 1 Room Preparation Verify that the floor is level solid and sufficient to support the unit See Table 2 for unit weights Confirm that the room is properly insulated and has a sealed vapor barrier For proper humidity control keep outside or fresh air to an absolute minimum less than 5 of total air circulated in the room
146. it sections together there are four on the left and four on the right 3 Separate the unit sections with caution NOTICE Risk of improper handling May cause damage to the Liebert DS The blower and electric box assembly should be moved forward and set on the floor Emerson recommends using four people to remove this section The motor end will be significantly heavier than the other end The filter and coil assembly must remain upright The coil is not secured to the filter and coil assembly Secure the coil to the bottom section with straps or a similar means before moving the section 4 Move each section of the Liebert DS to the installation location 65 Disassembling the Liebert DS for Transport 7 6 7 7 Reassembly Upflow Unit 1 13 14 15 16 17 18 Reattach the top section using thread cutting bolts there are four on each side Torque the bolts to 225 in lb 25Nm Reinstall the motor access plate Do not replace the left end coil access plates until brazing is finished Reattach the compressor section Insert all compressor thread cutting bolts before tightening them all down Reinstall the pull bar to support the accent panel Reinstall the low voltage plugs in the compressor section Rewire the compressor reheat humidifier condensate pump and smoke detector if applicable Reattach the sensing tube to the blower inlet Reattach the plug connection at the actuator and
147. ive system rotates freely and belts are properly aligned and tensioned Compressor shipping blocks removed and springs adjusted see 5 3 Semi Hermetic Compressor Spring Isolation System Remove rubber band from float in optional infrared humidifier Seal openings around piping and electrical connections Installation materials and tools have been removed from equipment literature shipping materials construction materials tools etc Locate blank startup sheet ready for completion by installer or startup technician 125 Initial Startup Checks and Commissioning Procedure for Warranty Inspection 12 0 INITIAL STARTUP CHECKS AND COMMISSIONING PROCEDURE FOR WARRANTY INSPECTION A WARNING Risk of electric shock Can cause injury or death Disconnect local and remote power supplies before working within Before proceeding with installation read all instructions verify that all the parts are included and check the nameplate to be sure the voltage matches available utility power Follow all local codes A WARNING Risk of improper wiring piping moving lifting and or handling Can cause equipment damage injury or death Only qualified service personnel should move install or service this equipment Read all installation operating and safety instructions before proceeding Read and follow all warnings in this manual A WARNING Risk of fire suppression and alarm system activation Can cause injury during bu
148. ks to the unit Use a pry bar or similar device to lift one end of the unit just enough to allow removal of the piano jack from that end Repeat Step 3 to remove the piano jack on the opposite end Remove all material that might have been used to protect the unit from the piano jacks and strapping Equipment Inspection and Handling 5 2 4 Removing Liebert DS from Skid Using Rigging A WARNING Risk of improper moving Can cause equipment damage injury or death Use the center of gravity indicators see Figure 36 on the unit to determine the position of the slings The center of gravity varies depending on the unit size and selected options The forklift s tines must be equally spaced on either side of the center of gravity indicator 1 Space the slings equidistant on either side of the center of gravity indicator see Figure 36 Figure 36 Locate center of gravity marker and place slings Lifting gt lt Lifting Sling Sling CENTER OF GRAVITY Illustration shows one possible center of gravity The center of gravity on the Liebert DS varies with the options and the model s size Equal Equal 181659P1 Distance Distance Rev 5 2 Place the slings between the bottom rails of the Liebert DS and the top of the skid NOTE Unit is shown without packaging These instructions may be applied with the outer packaging
149. l GLYCOOL 53 77kW 15 22 ton all comipressor model Sy 5 ul a e a at BAC ICS ander R oh ee Primary connection locations downflow water glycol GLYCOOL 53 77kW 15 22 ton all compressor models with EC fan 0 0 eee eee eee ene Primary connection locations downflow air cooled 105kW 30 ton all compressor models a a SEN tes reeset De ene tae ies Primary connection locations downflow air cooled 105kW 30 ton all compressor Models wth EG Ta a dr atyen nent a dt Primary connection locations downflow water glyco GLYCOOL 105kW 30 ton all compressor Models ni a hace alae Bowes A a cai bos Primary connection locations downflow water glyco GLYCOOL 105kW 30 tons all compressor models with EC fan eee eee e eens Primary connection locations upflow air cooled 28 42kw 8 12 ton semi hermetic compressor models 5 rai toea ede ek eee keg BRE ie Bein a E ee Meese Primary connection locations upflow air Cooled 28 42kW 8 12 ton semi hermetic compressor Models ii as hashes nan Diameter ba a eia a Baie ids Se al doa oblate Primary connection locations upflow water glycol GLYCOOL 28 42kW 8 12 ton all compressor models Primary connection locations upflow air cooled 53 77kW 15 22 ton semi hermetic Compressor Models iia ta A e OS Primary connection locations upflow air cooled 53 77kW 15 22 ton scroll compressor o A A A O E 4 Primary connection locations upflow water glycol GLYCOOL 53
150. led Digital Scroll Models 82 1 4 2089 15 3 4 400 oe 18 x 78 457 x 1981 18 x 20 457 x 508 53 77kW 15 22 ton Semi Hermetic i 610 and all Water Glycol GLYCOOL Models 82 1 4 2089 26 3 4 679 18 x 78 457 x 1981 18 x 20 457 x 508 36 1 18 x 20 457 x 508 105kW 30 ton All Models 105 1 4 2673 26 3 4 679 914 4 18 x 78 457 x 1981 18 x 20 457 x 508 36 Equipment Inspection and Handling 5 0 EQUIPMENT INSPECTION AND HANDLING Upon arrival of the unit and before unpacking it verify that the labeled equipment matches the bill of lading Carefully inspect all items for damage either visible or concealed For initial access use a 7 32 Allen wrench for panel removal Damage should be immediately reported to the carrier and a damage claim filed with a copy sent to Emerson Network Power or to your sales representative 5 1 Packaging Material All material used to package this unit is recyclable Please save for future use or ENS dispose of the material appropriately R SAFETY INFORMATION ces Risk of top heavy unit falling over Can cause equipment damage injury or death Read all of the following instructions before attempting to move the unit lift it remove packaging or prepare the unit for installation A CAUTION Risk of sharp edges splinters and exposed fasteners Can cause personal injury Only properly trained personnel wearing appropriate safety headgear glov
151. locate your local Emerson representative for Liebert engineered parts check the Liebert Web site www liebert com or call 1 800 LIEBERT 153 HVAC Maintenance Checklist NOTES 154 HVAC Maintenance Checklist 155 HVAC Maintenance Checklist 156 COMPLIANCE WITH EUROPEAN UNION DIRECTIVES Fabbricante Manufacturer Hersteller Fabricant Fabricante Fabricante Tillverkare Fabrikant Valmistaja Produsent E IM E RS O Fabrikant Kataoxevaotn Producent N Liebert Corporation 1050 Dearborn Drive P O Box 29186 Columbus OH 43229 USA Il Produttore dichiara che se munito di marchio CE il prodotto conforme alle direttive dell Unione europea The Manufacturer hereby declares that this product when bearing the CE mark conforms to the European Union directives Der Hersteller erkl rt hiermit dass das vorliegende Produkt sollte es die CE Kennzeichnung tragen den folgenden Richtlinien der Europ ischen Union entspricht Le fabricant d clare par la pr sente que ce produit portant la marque CE est conforme aux directives de l Union europ enne El fabricante declara por la presente que si este producto lleva el marcado CE es conforme con las directivas de la Uni n Europea O fabricante declara por este meio que este produto quando ostenta a marca CE est em conformidade com as directivas da Unido Europeia Tillverkaren tillk nnager h rmed att den h r prod
152. ltage Wiring Y Field Supplied lt lt Fan Removal Ce SS nea Fame Devices D anne Right Side Panel Not Shown DPN001695 Page 2 Rev 5 l DN Ih Field Supplied Fan Removal Devices End View Slide the Fan Out ZA the Front of the Unit 2 DPNO001695 Page 3 Rev 5 amp Panel Not Shown 49 Disassembling the Liebert DS for Transport 7 0 DISASSEMBLING THE LIEBERT DS FOR TRANSPORT 7 1 The Liebert DS has a modular frame construction that allows separating the unit into three sections Each of these sections is more easily maneuvered through tight spaces or placed in small elevators A qualified service technician with the required tools and recommended assistance can disassemble an air cooled unit in about four hours assuming refrigerant evacuation is not required This procedure requires four or more people for lifting the filter and electric box assembly on downflow units and for lifting the blower and electric box assembly on upflow units A A A WARNING Risk of explosive discharge from high pressure refrigerant Can cause injury or death This unit contains fluids and or gases under high pressure Relieve pressure before working with piping compressors or other internal components WARNING
153. ly Y Jy PQ EEN VEDA Ly UN o 76 Blower 8 Coil 1930mm Assembly Assembled Height 76 60 3 16 1930mm 1529mm ___ 59 1499mm 85 2159mm Assembled Length DPNO0O00801 Rev 1 Table 29 Component weights downflow air cooled 28 42kW 8 12 ton semi hermetic Dry Weight Approximate Including Panels Ib kg Component Air Cooled Dual Cool Compressor Assembly 800 364 800 364 Filter amp Electric Box Assembly 210 96 210 96 Blower amp Coil Assembly 770 350 920 418 55 Disassembling the Liebert DS for Transport Figure 44 Component dimensions downflow air cooled 28 42kW 8 12 ton scroll digital scroll compressor models Drawing views are simplified with panels removed to show overall dimensions See disassembly and handling instructions in installation manual Filter amp Electric Box Assembly 39 991mm E E 76 Compressor Assembly TA oa Height 76 1930mm A I 59 1499mm 838mm 330mm 72 1829mm DPN000802 Assembled Length Rev 1 Table 30 Component weights downflow air cooled 28 42kW 8 12 ton scroll digital scroll Dry Weight Approximate Ib kg Component Air Cooled Dual Cool Compressor Assembly 490 223 490 223 Filter 8 Electric Box Assembly 210 96 210 96 Blower amp Coil Assembly 770 350 920 418 56 Disassembling the
154. ly when activated Clean valve and replace if defective Flush canister several times and replace if arcing persists content in water Excessive mineral Analyze mineral content of water If mineral content is excessive contact Liebert service 142 Maintenance Figure 106Circuit board diagram PCB is configured for MES L K2 150 9591 HIGH WATER Ortec O lt f Current Transformer 2 o N ERROLD HW Sensor Jumpers J9 Low Voltage 200 240V J8 High Voltage 380 600V Mains Voltage Select Jumpers J6 200 208 J5 230V J3 380 415 J2 460V J1 575V EE o O J23 P1 P2 KI pz Kt pg paps FO Ez ee Jao eel atelie faa gt 0 adalah ao y Green To configure the PCB to the proper voltage the jumpers should be set as follows Factory setting do not adjust 200V 208V J6 J9 J15 J17 J19 J10 J23 P11 pin 2 3 230V J5 J9 J15 J17 J19 J10 J23 P11 pin 2 3 380V 415V J3 J8 J15 J17 J19 J10 J23 P11 pin 2 3
155. mm Front of Unit DPNO001191 Rev 4 Table 25 Blower outlet and deck dimensional data upflow 53 77kW 15 22 tons Models 53 77kW 15 22 Tons Dimensional Data inches mm Blower Supply A B C D E F G H Front 15 7 8 18 5 8 2 1 8 25 5 8 27 3 4 55 1 2 25 1 8 50 1 2 15x15 Throw 404 472 54 651 705 1410 638mm 1283mm Rear 15 7 8 18 5 8 11 5 8 25 5 8 27 3 4 55 1 2 25 1 8 50 1 2 Throw 404 472 295 651 705 1410 638mm 1283mm Front 15 7 8 14 11116 2 1 8 25 5 8 31 3 8 58 7 16 27 3 4 47 15x11 Throw 404 373 54 651 797 1484 705mm 1194mm Rear 15 7 8 14 11 16 11 5 8 25 5 8 31 3 8 58 7 16 27 3 4 47 Throw 404 373 295 651 797 1484 705mm 1194mm 33 Liebert DS Dimensions and Weights Figure 29 Blower outlet and deck dimensions upflow 105kW 30ton 132 3353mm Blower Outlets KB BB a Front of Unit Blower Outlet Location TOP VIEW Duct Flanges Not Provided Top of Unit Blower Deck D _ gt 1 1 2 38mm 76 1930mm Ref l l DPN001192 Front or Rear Throw Air Supply Rev 0 Table 26 Blower outlet and deck dimensions upflow 105kW 30ton Dimensions in mm Models Blower Supply A B Cc D E F G Front 15 7 8 14 11 16 2 1 8 25 5 8 30 3 4 54 1 2 78 1 8 105kW Res Throw 404 373 54 651 781 1384
156. motor clean and ventilation openings clear of dust dirt and other debris Blower Motor Lubrication Motor comes pre lubricated from factory and does NOT require initial lubrication Emerson recommends a 5 year lubrication interval for motor bearings that have grease fittings Greases of different bases may not be compatible when mixed Contact specific motor manufacturer to determine type of grease to be used Blower Wheel Check to see if wheel s are tightly mounted on fan shaft Rotate wheel s and make sure they do not rub against fan housing The wheel s should be periodically cleaned of dirt and debris Electronic Variable Speed Drive Inverter On Liebert DS models with digital scroll an optional variable speed drive is available This packaged unit is factory set and should not require field adjustment Removing VSD from Liebert DS 1 Turn off power at the unit disconnect 2 Remove the front right panel 3 Remove the VSD subassembly from the unit shoulder downflow or from the unit floor upflow To find the inverter in downflow units see Figure 1 refer to Figure 2 for the inverter s location in upflow units Remove the VSD sheet metal cover from the VSD subassembly Label the wires from the VSD then disconnect the wires from the VSD junction box Remove the VSD from the sheet metal bracket Install the new VSD on the sheet metal bracket Reconnect wires to the VSD Reinstall the VSD sheet metal cover 1
157. move wires from terminal strip 91 92 93 and route the wires to the smoke detector box Remove the sensing tube from the bottom of the plastic elbow Filter Clog Switch Disconnect both tubes from the filter clog switch Pull both of the tubes into the electric box Close the electric box cover and the accent panel Remove the pull bar that supports the accent panel from left end of unit otherwise it will fall out when the compressor section is removed Evacuate and recover all refrigerant from the unit Air cooled units contain a nitrogen holding charge Water glycol and GLYCOOL units are factory charged with refrigerant Refer to 9 0 Piping for piping guidelines and to the ASHRAE Refrigeration Handbook for general good practice refrigeration piping NOTICE Risk of compressor oil contamination with moisture Can cause equipment damage Emerson recommends front seating the compressor service valves Front seating the valves keeps the nitrogen or refrigerant charge in the compressor and prevents moisture from contaminating the compressor oil This is particularly important with units using R 407C refrigerant Cut and pull back insulation from piping 64 Disassembling the Liebert DS for Transport 17 Cut the refrigerant piping with a tubing cutter if there is no Schrader fitting let the nitrogen bleed out before cutting all the way through the pipe R NOTE Emerson does not recommend unsweating refrigerant connect
158. mpressor models Weights for downflow air cooled 28 42kW 8 12 ton scroll compressor models Weights for downflow water glycol GLYCOOL 28 42kW 8 12 ton all compressor models Weights for downflow air cooled 53 77kW 15 22 ton semi hermetic compressor models Weights for downflow air cooled 53 77kW 15 22 ton scroll compressor models Weights for downflow water glycol GLYCOOL 53 77kW 15 22 ton all compressor models iia ns Bloat toed cree Gast ee a da cn Weights for downflow air Cooled 105kW 30 ton all compressor models Weights for downflow water glycol GLYCOOL 105kW 30 ton all compressor models Weight for upflow air cooled 28 42kW 8 12 ton semi hermetic compressor models Weight for upflow air cooled 28 42kW 8 12 ton scroll or digital scroll compressor Model it A a a r Oba contigs Weights for upflow water glycol GLYCOOL 28 42kW 8 12 ton all compressor models Weights for upflow air cooled 53 77kW 15 22 ton semi hermetic compressor models Weight for upflow air cooled 53 77kW 15 22 ton scroll or digital scroll compressor models it a SA A A ta O edb ene a Weights for upflow water glycol GLYCOOL 53 77kW 15 22 ton all compressor models Weights upflow air cooled 105kW 30 ton all o oooooooooo oo ooo Weights upflow water glycol GLYCOOL 105kW 30 ton all compressors Floo
159. mpromise by helping customers optimize their data center infrastructure to reduce costs and deliver high availability While every precaution has been taken to ensure the accuracy and completeness of this literature Liebert Corporation assumes no responsibility and disclaims all liability for damages resulting from use of this information or for any errors or omissions O 2008 Liebert Corporation All rights reserved throughout the world Specifications subject to change without notice Liebert is a registered trademark of Liebert Corporation All names referred to are trademarks or registered trademarks of their respective owners SL 18825_REV11_02 11 Emerson Network Power The global leader in enabling Business Critical Continuity E AC Power E Embedded Computing E Outside Plant HI connectivity Mi Embedded Power H Power Switching amp HI DC Power Mi Infrastructure Management amp Monitoring Mi Precision Cooling Emerson Business Critical Continuity Emerson Network Power and the Emerson Network Power logo are trademarks of Emerson Electric Co or one ofits affiliated companies 2008 Emerson Electric Co Technical Support Service Web Site www liebert com Monitoring liebert monitoring emerson com 800 222 5877 Outside North America 00800 1155 4499 Single Phase UPS amp Server Cabinets liebert upstech emerson com 800 222 5877 Outside North America 00800 1155 4499 Three Phase UPS amp Power Systems 800 54
160. n mm c D turning vane 9 229 4 111 12 305 7 187 15 381 10 264 18 457 13 340 21 533 16 416 24 610 19 492 30 Liebert DS Dimensions and Weights Figure 26 Floor stand and floor planning dimension downflow 105kW 30 tons models with EC fans 132 1 2 3366mm with feet 131 3327mm 25 635mm 34 1 2 876mm 33 with feet 838mm Lo 74 1880mm 1 25mm Typ Gussets supplied on floor stands 12 305 mm tall and greater 3 76mm E I NOTE 1 This floor stand should be used when EC fans are intended to be lowered under a raised floor The standard Liebert DS floor stand can be used if the fans are to Ae remain in their original raised position e 2 Right side of paneled unit is flush with right side of floor stand All other paneled 35 sides overhang floor stand 1 25mm L egomm o 3 The floor stand used with EC units is not symmetrical and its orientation to the Overall Depth Liebert DS is critical for lowering the EC fans Unless the floor stand is installed in the correct position the blowers will not lower into the floor stand 4 Jack and jack support are shipped loose and are intended to be placed into position DPNO002152 under each fan and utilized to lower or raise that fan as needed Rev 0 Leveling feet are provided with 1 1 2 88mm adjustment from nominal height A Table 23 Floor stand and floor planning dimensions dow
161. n scroll digital scroll forward curved and EC fan Dry Weight Approximate Including Panels Ib kg Component Air Cooled Dual Cool Compressor Assembly 540 246 540 246 Filter amp Electric Box Assembly 250 114 250 114 Blower amp Coil Assembly 1230 560 1410 641 59 Disassembling the Liebert DS for Transport Figure 48 Component dimensions downflow water glycol GLYCOOL 53 77kW 15 22 ton all compressor models forward curved and EC fan Drawing views are simplified with panels removed to show overall dimensions See disassembly and handling instructions in installation manual Filter amp Electric Box Assembly 39 991mm 76 1930mm Assembled Height 59 7 16 1509mm 37 940mm Compressor Assembly Blower amp Coil Assembly Y N Y LN 33 26 e 660mm e 2083mm 108 2743mm Assembled Length DPNO00932 Rev 2 i Table 34 Component weights downflow water glycol GLYCOOL 53 77kW 15 22 ton all Semi Hermetic Compressor Scroll Compressor Water Glycol GLYCOOL Dual Cool Water Glycol GLYCOOL Dual Cool Liebert DS Section Ib kg Ib kg Ib kg Ib kg Compressor Assembly 1270 578 1270 578 840 382 840 382 Filter and Electric Box Assembly 250 114 250 114 250 114 250 114 Blower amp Coil Assembly 1230 560 1410 641 1230 560 1410 641 Disassembling the Lieb
162. n Dual Pump To only Pressure Port Gate Valves Ll Air Vents on typical Pressure Port Flow Switch Supplied with Dual Pump Systems i Flow Regulating Valve RETURN SUPPLY y RETURN Shutoff Valve SUPPLY Shutoff Valve Sensor Relief valve s supplied with 50Hz EU CE units rated ION maximum 480 PSIG 33 Bar CIRCUIT Factory Piping Field Piping WV Service Schrader Access Connection No Valve Core y Service Schrader Access Connections With Valve Core Notes Schematic representation shown This schematic does not imply or define elevations and component location unless specifically noted Two refrigeration circuits provided Single refrigeration circuit shown for clarity Components are not supplied by Liebert but are recommended for proper circuit operation and maintenance Field installed at highest point in system on return line to pumps Locate at tops of all risers and any intermediate system high points DPN000897 Rev 02 98 Piping Schematics Figure 72 Piping schematic GLYCOOL with scroll compressor models EXPANSION TANK LIEBERT HEAT REJECTION For systems with drycoolers refer to 13 14 3 Drycooler Settings DRYCOOLER Glycol Glycol Aquastat Sensing Bulbs Hose Bib Shutoff Valve LIEBERT DS UNIT and associated piping LIQUID ECON O COIL 3 Way Chilled Glycol Valve EVAPORATOR
163. n line must be sized for 2 gpm 7 6 l m flow NOTICE The drain line must not be trapped outside the unit or water may back up in the drain pan 82 Piping Figure 66 Gravity drain for downflow and upflow units DOWNFLOW DS UNIT INTERNAL DRAIN EXTERNAL DRAIN CONTINUOUS DOWNWARD SLOPE CORRECT INTERNAL DRAIN EXTERNAL DRAIN DO NOT EXTERNALLY TRAP THE UNIT INCORRECT INTERNAL EXTERNAL DRAIN THESE ARE EXTERNAL TRAPS ALSO ALTHOUGH UNINTENTIONAL LINES MUST BE RIGID ENOUGH NOT TO BOW OVER TOP OF OTHER OBJECTS INCORRECT Condensate Pump UPFLOW DS UNIT EXTERNAL DRAIN CONTINUOUS DOWNWARD SLOPE CORRECT INTERNAL EXTERNAL DO NOT EXTERNALLY TRAP THE UNIT INCORRECT EXTERNAL Ny ERNAL THESE ARE EXTERNAL TRAPS ALSO ALTHOUGH UNINTENTIONAL LINES MUST BE RIGID ENOUGH NOT TO BOW OVER TOP OF OTHER OBJECTS INCORRECT ppnoo15s56 Rev 0 1 2 copper sweat connection is provided on units with optional factory installed condensate pump Condensate Pump 60Hz Condensate pump is rated for approximately 400 gph at 10 feet total head Condensate Pump 50Hz Condensate pump is rated for approximately 315 gph at 10 feet total head Size piping based on available condensate head 83 Piping 9 1 2 9 1 3 9 1 4 Humidifier Supply Water Optional Infrared 1 4 supply line maximum water pressure is 150 psi 1034kPa Size humid
164. n page 126 Activate for a minimum of five 5 minutes 15 Check for unusual noises and vibration Note observations on the warranty inspection form s comments section 16 Check all refrigerant and water lines for leaks Note observations on warranty inspection form 17 Record all of the following on the warranty inspection form All component voltages and current draws All air water temperatures indoor and outdoor All refrigerant and water glycol pressures All levels of refrigerant and oil in sight glasses Record refrigerant pressure switch settings and operating pressures Record superheat and subcooling NOTE Unit superheat should be in the range of 10 to 20 F 12 to 6 C 18 Test all control sequences and functions of your unit for proper operation Use Liebert COM user manual as a guide to system control operations 19 Complete the warranty inspection form with sign off data Return Completed Startup Form to Your Local Emerson Sales Office Local Emerson sales offices and air product support contacts can be found on the Liebert Web site www liebert com or call 1 800 LIEBERT for Precision Cooling product support 129 Maintenance 13 0 MAINTENANCE A WARNING Risk of electric shock Can cause injury or death Disconnect local and remote power supplies before working within Before proceeding with installation read all instructions verify that all the parts are included and check th
165. n the plenum package PLENUM DUCTING Pre Installation Guidelines 3 3 Air Distribution Upflow Units Various configurations are available Front return Rear return Top front supply Top rear supply For in room applications with supply and return grilles several feet of clearance must be maintained at the intake and discharge of the unit Upflow rear return configurations use a filter box attached to the back of the Liebert DS Allow 25 635 mm on one side of the unit for access to the rear return filter box Refer to the rear return installation sheet 187230P1 inside the rear return filter box package A WARNING Risk of high speed moving parts Can cause injury or death Disconnect all local and remote electric power supplies before working in the unit Do not operate upflow units without installing a plenum ductwork or guard over the blower opening s on the top surface of the unit cabinet Ductwork must be connected to the blower s or a plenum must be installed on the blower deck for protection from rotating blower wheel s on upflow units Figure 5 Upflow ducting configurations A Straight section of duct off of unit to be 1 5 to 2 5 times the longest blower dimension ZA Typical ducting shown ducting may run to either side DPN001156 Follow standard practices on all duct work Rev 0 NOTE Drain traps are qualified to a return duct static of negative 1 5 i w g 1
166. nce on all piping dimensions is 1 2 13mm 889mm H Field routed alternatives for refrigerant Y gas and liquid line connection points AN See submittal page DPN001191 for blower outlet and deck dimensional data ho 1o9 2769mm TOP VIEW OF UNIT Front of Unit 6 152mm 17 3 16 437mm 20 1 16 509mm WIZLLL LLL Ld a 14 1 4 AS ean 362mm Factory Location doam FRONT SECTION VIEW OF UNIT mm Left Front Panel Not Shown LEFT SIDE SECTION VIEW OF UNIT Field pitch Condensate Drain line a minimum of 1 8 3 2 mm per foot 305 mm All units contain a factory installed condensate trap Do not trap external to the unit Drain line may contain boiling water Select appropriate drain system materials The drain line must comply with all local codes DPN001212 Supplied on Dual Cooling Systems only Rev 2 Connection Size Opening Point Description inches mm inches mm inches mm R1A Refrigerant Access Top 83 3 4 2127 1 7 8 48 22 1 2 x 15 3 16 572 x 386 R2A Refrigerant Access Bottom 86 2184 13 7 8 352 16 7 16 x 4 418 x 102 53kW 15 ton 70 amp 77kW 20 amp 22 ton L1 Liquid Line System 1 97 2464 16 3 4 425 1 2 5 8 Cu Sweat L2 Liquid Line System 2 93 5 16 2370 16 3 4 425 1 2 5 8 Cu Sweat G1 Hot Gas Discharge 1 90 5 8 2302 16 5 8 422 7 8 1 1 8 Cu Sweat G2 Hot Gas Discharge 2 88 2235 16 5 8 422 7
167. nflow 105kW 30 ton models with EC fans Height Dimension A in mm 24 610 30 762 36 914 42 1067 48 1219 31 Liebert DS Dimensions and Weights Figure 27 Blower outlet and deck dimensions upflow 28 42kW 8 12 ton 73 1854mm or 86 2184mm Ref Blower Outlet Blower Outlet Location Top View Duct flange not provided Top of Unit Blower Deck Pp D 1 1 2 38mm 76 1930mm Ref 1 DPNO01120 Front or Rear Throw Air Supply Rev 2 Table 24 Blower outlet and deck dimensional data for upflow 28 42kW 8 12 ton Dimensional data in mm Model Blower Supply A B C D E ETIE Front Throw 15 7 8 404 18 5 8 472 2 1 8 54 25 5 8 651 25 635 28 42kW Rear Throw 15 7 8 404 18 5 8 472 11 5 8 295 25 5 8 651 25 635 8 12ton ie Front Throw 15 7 8 404 14 1 2 368 2 1 8 54 25 5 8 651 25 635 Rear Throw 15 7 8 404 14 1 2 368 11 5 8 295 25 5 8 651 25 635 32 Liebert DS Dimensions and Weights Figure 28 Blower outlet and deck dimensions upflow 53 77kW 15 22 ton Duct flanges not provided 97 2464mm or 108 2743mm Blower Outlets Blower Outlet Top View Preferred Connection Location Front of Unit 2 1 8 Blower Deck Top of Unit Top of Unit lower Deck 54mm Front or Rear Air Throw Supply 35 Ref 889
168. nit will be operated with Wye connected power Figure 62 Wye connected power diagram Phase A Winding A Winding B Neutral Winding C DPN001944 PhaseC Rey 9 79 Electrical Connections 8 1 3 Delta Connected Power Supply For Delta connected power the EMC filter must be removed from the VSD unit during installation The size of the inverter C D or 2 must be determined by Table 48 based on the unit s electrical requirements and horsepower Failure to disconnect or remove EMC filter from VSD with delta connected power may result in failure of VSD and the fan motor to operate Figure 63 Delta connected power diagram Phase A Winding C A Winding A B Phase B DPN001945 Rev 0 Winding B C Phase C Table 48 Inverter type Motor Unit Electrical Requirements Voltage Phase Hz hp 208 3 60 230 3 60 380 3 60 460 3 60 575 3 60 200 3 50 380 415 3 50 3hp Size C Size C Size C Size C N A N A Size C 5hp Size D Size D Size C Size C N A N A Size C 7 5hp Size 2 Size 2 Size D Size D N A N A Size D 10hp N A Size 2 Size 2 Size D N A N A Size 2 Disconnect EMC Filter for Delta Connected Power for Size C amp D Inverters The EMC filter on the VSD must be disconnected if the Liebert VSD control DS unit will be operated with Delta connected power 1 2 Disconnect the power supply before working on the unit Locate the VSD refer to Figure 1 for
169. nnect all local and remote electric power supplies and verify that fan blades have stopped rotating before working within WARNING Risk of very heavy fan modules dropping downward suddenly Can cause injury or death Support fan modules before removing mounting hardware Use caution to keep body parts out of the fan modules pathway during repositioning Only properly trained and qualified personnel should work on this equipment Fan modules weigh in excess of 100 lbs 45 4kg each NOTE The Liebert DS unit should be used with the fans either in their original raised position or with the fans in their fully lowered position Suspension of fans in an intermediate position will directly affect product performance and is not recommended Lowering the EC Fans into the Floor Stand Tools Needed 1 2 hex socket amp wrench e Factory supplied jack crank and jack support cable tie cutter 1 Remove the middle and bottom panels from the front of the unit 2 For ease of fan lowering Emerson recommends removing the infrared humidifier using the approved infrared humidifier removal procedure 3 Position the factory supplied jack and jack support under the fan to be lowered 4 Raise the jack to safely support the fan before removing any hardware NOTE A properly positioned jack will be centered between the first and second set of tabs on the jack support The jack will be biased towards the front of the unit 5 Cut and remove the c
170. nnected power Type 2 inverters RT 3 A ts EB B558 pus DPN001947 ren S Rev 0 81 Piping 9 0 PIPING 9 1 9 1 1 All fluid and refrigeration connections to the unit with the exception of the condensate drain are sweat copper Factory installed piping brackets must not be removed Field installed piping must be installed in accordance with local codes and must be properly assembled supported isolated and insulated Avoid piping runs through noise sensitive areas such as office walls and conference rooms Refer to specific text and detailed diagrams in this manual for other unit specific piping requirements All piping below the elevated floor must be located so that it offers the least resistance to air flow Careful planning of the piping layout under the raised floor is required to prevent the air flow from being blocked When installing piping on the subfloor it is recommended that the pipes be mounted in a horizontal plane rather than stacked one above the other Whenever possible the pipes should be run parallel to the air flow Fluid Connections NOTICE Risk of clogged or leaking drain lines Can cause equipment and building damage This unit requires a water drain connection Drain lines must be inspected regularly and maintenance must be performed to ensure that drain water runs f
171. o the Liebert iCOM user manual SL 18835 If unit power is not available a field supplied 24VAC 75VA power source must be directly connected to each of the unit solenoid valves 2 For semi hermetic compressors connect refrigeration gauges to the suction and discharge service valves of both compressors 3 For scroll and digital scroll compressors connect refrigerant gauges to the suction rotalock valves and discharge line Schrader valves see Note above on both compressors 4 Starting with Circuit 1 open the service valves and place a 150 PSIG 1034 kPa of dry nitrogen with a tracer of refrigerant Check system for leaks with a suitable leak detector 5 With pressure still in Circuit 1 open the compressor service valves in Circuit 2 If pressure increases in Circuit 2 the system is cross circuited and must be rechecked for proper piping If there is no pressure increase repeat the leak check procedure for Circuit 2 6 After completion of leak testing release the test pressure per local code and pull an initial deep vacuum on the system with a suitable pump 7 After four hours check the pressure readings and if they have not changed break vacuum with dry nitrogen Pull a second R 407C and R 22 and third R407C only vacuum to 250 microns or less Recheck the pressure after two hours After completing this step proceed to Variable Fan Speed Charging 89 Piping Variable Fan Speed Charging 1 2 4 T
172. o your local Emerson sales office This information must be completed and forwarded to Emerson to validate warranty Contact your local Emerson sales representative or Liebert Air Product Support if you have any questions or problems during unit startup and commissioning Local Emerson Sales offices and Liebert Air Product Support contacts can be found at www liebert com or by calling 1 800 LIEBERT Liebert DS warranty startup procedures includes the following steps These steps must be completed to validate warranty 126 Initial Startup Checks and Commissioning Procedure for Warranty Inspection 12 1 Information for Warranty Inspection Remove Power From Unit Disconnect Complete the following items on the warranty inspection form Installer name and address Owner name and address Site contact name and phone number Installation date Indoor unit model number and serial number Outdoor unit condenser or drycooler model number and serial number Condition of unit when received Is there a freight damage claim in process If so have all relevant parties been notified Have manuals been kept with unit Is the Liebert Precision Cooling unit connected to site monitoring or switchover controls Provide model and serial of connected controls for switchover controls 12 2 Startup Checks With Panels Removed and Main Disconnect Off 1 Check all internal piping clamps and tighten or secure if needed Check field piping
173. oad conditions are high and less fluid to flow when load conditions are low The valve consists of a brass body balance spring valve seat valve disc holders capillary tube to discharge pressure and adjusting screw Adjustment Johnson Controls Penn Johnson Valves The valves may be adjusted with a standard refrigeration service valve wrench or screwdriver Table 65 Recommended refrigerant pressures System Design PSIG kPa Water Cooled 65 to 75 F water 18 to 24 C 210 1450 85 F water 29 C 225 1550 Glycol Cooled 295 2035 Maximum 330 2275 High Pressure Cut out 400 2859 To lower the head pressure setting turn the square adjusting screw clockwise until the high pressure gauge indicates the desired setting To raise the head pressure setting turn the adjusting screw counterclockwise until the desired setting is obtained Consult the factory if your unit is equipped with valves from other manufacturers 147 Maintenance Testing Function of Valve First turn off the refrigeration system When the refrigeration system has been off for approximately 10 to 15 minutes the water flow should stop If the water continues to flow the valve is either improperly adjusted with head pressure too low or the pressure sensing capillary is not connected properly to the condenser Location The water regulating valves are located in the condenser fluid supply line 13 14 2Motor B
174. ode to override the normal control 148 Maintenance 13 14 3Drycooler Settings Applications with the Optional Stat Setting require field piping to be insulated to prevent condensation Table 66 shows acceptable applications where stats must be adjusted to Optional Setting Aquastats must be field adjusted to Optional Setting for GLYCOOL Dual Cool applications Single Drycooler loops with motor ball valve flow controls motor ball valves are used on all Liebert DS units with digital compressors These units have a D or G in the seventh character DS VS xxxxD or DS VS xxxxG Table 66 Water glycol system conditions requiring optional settings for aquastats Cooling Type Glycool Glycol Flow Control MBV WRV MBV WRV Drycoolers in Loop 1 Multiple 1 Multiple 1 Multiple 1 Multiple Stat Setting Optional Optional Optional Optional Optional Factory Factory Factory Insulate Field Piping Yes Yes Yes Yes Yes No No No See Tables 67 through 69 MBV motor ball valve WRV water regulating valve Table 67 Aquastat settings two fan through four fan drycoolers Dial Setting Stat Open Temp Set for Mid Differential 8 F 4 4 C Rise to Close Factory Setting Optional Setting Aquastat Fans Glycol see Notes 1 and 2 GLYCOOL see Note 3 AQ1 F1 65 F 18 3 C 35 F 1 7 C AQ2 F2 8 F3 75
175. offset parameter in the Service menu can be adjusted from 0 to 50 PSI 345 kPa to raise or lower the control band similar to the pressure adjustment on a water regulating valve Changing the setpoint offset will adjust the pressure thresholds for both circuits Units are factory set at a 30 PSI 207 kPa setpoint offset 80 PSI 207 kPa above minimum This results in a 220 PSIA 1517 kPa lower threshold and a 255 PSIA 1758 kPa upper threshold pressure Startup The setpoint offset is adjusted to the minimum value during startup then transitions to the set value once the compressor reaches normal operating pressures Due to the control dead band it is possible for each circuit to stabilize at different pressures within the dead band Additionally changes in fluid temperature could cause pressure changes that do not result in valve movement within the dead band Fan cycling stats should be set to prevent continuous fluid temperature swings greater than 10 F 5 6 C see 13 14 38 Drycooler Settings Location The motorized ball valves are located in the condenser fluid return line Three way valves are piped in a mixing arrangement with the common port at the valve outlet Manual Control The valve can be manually set by disconnecting AC power depressing the manual override button on the valve actuator and adjusting the valve position with the handle You also have the option to control the MBV s through the Service menu using manual m
176. on of 68 F 20 C DB and 40 RH or minimum WB of 54 F 12 2 C for proper unit operation Operating below this can decrease equipment reliability Refer to ASHRAE s publication Thermal Guidelines for Data Processing Environments Liebert DS Dimensions and Weights LIEBERT DS DIMENSIONS AND WEIGHTS Table 1 Shipping dimensions domestic and export inches mm 028 035 042 053 070 077 105 Model Number LxWxH in mm LxWxH in mm LxWxH in mm DS VSAS DS VSAD DS VSAR DS VSAG 102x42x82 DS VSDS DS VSDD DS VSDR DS VSDG 2591x1067x2083 DS VSAU DS VSAM DS VSDU DS VSDM 90x42x82 136x42x82 DS VSWS DS VSWD DS VSWR DS VSWG 2286 x 1067x2083 114x42x82 3454 x 1067x2083 DS VSHS DS VSHD DS VSHR DS VSHG 2896 x 1067x2083 DS VSWU DS VSWM DS VSHU DS VSHM Table 2 Shipping weights approximate kg Cooling Compressor Downflow Unit Weight Ib Upflow Unit Weight Ib Size Type Type Domestic Export Domestic Export Air Semi 1918 2088 1968 2138 Scroll 1608 1778 1658 1828 Air DIC Semi 2068 2238 2118 2288 Scroll 1758 1928 1808 1978 8 12 Ton W G Semi 2068 2238 2118 2288 Scroll 1918 2088 1968 2138 GIC Semi 2218 2388 2268 2438 Scroll 2068 2238 2118 2288 Air Semi 2512 2712 2512 2712 Scroll 2070 2260 2220 2410 Air DIC Semi 2692 2892 2692 2892 Scroll 2250 2440 2400 2
177. onent dimensions upflow air cooled 105kW 80 ton semi hermetic compressor models E O RR NN Component dimensions upflow air cooled 105kW 30 ton scroll digital scroll COMPLESSOR models raita A A aed Bea tae Component dimensions upflow water glycol GLYCOOL 105kW 30 ton all Compressor Models a E ad ha ere back Electrical field connections for upflow and downflow models ooooooooooooooo Wye connected power diagrama Delta connected power diagram 1 eee eee ee eee eens Disconnecting EMC filter for operation with Delta connected power size C amp D inverters Figure bb Disconnecting EMC filter for operation with Delta connected power Type 2 VOTOS ns ll A sah byt A Aisa ta tach soso A da Gravity drain for downflow and upflow units n aaas asuaan aeaee Piping schematic air cooled semi hermetic compressor models 000 cece eee Piping schematic air cooled scroll compressor models 0 0 e ee ence teens Piping schematic water glycol semi hermetic compressor models 000e eee eee Piping schematic water glycol with scroll compressor models 00 0c e eee eee Piping schematic GLYCOOL semi hermetic compressor models o o o oooooooo Figure 72 Figure 73 Figure 74 Figure 75 Figure 76 Figure 77 Figure 78 Figure 79 Figure 80 Figure 81 Figure 82 Figure 83 Figure 84 Figure 85 Figure 86 Figure 87 Figure 88 Figure 89 Figure 90
178. oper wiring piping moving lifting and handling Can cause equipment damage injury or death Installation and service of this equipment should be done only by qualified personnel who have been specially trained in the installation of air conditioning equipment NOTE Seal openings around piping and electrical connection to prevent air leakage Failure to do so could reduce the unit s cooling performance NOTICE Risk of improper electrical connection of three phase input power Can cause unit damage Service technicians should use a gauge set on the Liebert DS system during the initial startup to verify that the three phase power is connected properly The EC fans are not a reliable indicator of proper connection The blowers will rotate the same direction regardless of the three phase power input NOTICE Risk of backward compressor rotation Can cause equipment damage Three phase power must be connected to the unit line voltage terminals in the proper sequence so that scroll compressors rotate in the proper direction NOTICE Risk of improper electrical supply connection Can cause equipment damage See transformer label for primary tap connections Installer will need to change transformer primary taps if applied unit voltage is other than pre wired tap voltage NOTICE Risk of overheated terminals Can cause wiring and component damage Use copper wiring only Make sure that all connections are tight 76 Electr
179. or to the desired filter change point Figure 97 Proper filter pleat direction Do Not Use aia a 25 635mm Short Pleat Construction Long Pleat Construction The filter pleat direction should run parallel to the direction of the short side of the filter as shown above DPN000994 Do NOT use long pleat filter construction as shown at Rev 0 right above because it can result in filter collapse 13 2 Blower Drive System Centrifugal Fans Blower drive system components that are part of the maintenance schedule include the blower wheel s drive shaft bearings pulley belts sheave motor auto tension base and motor See Blower Section on page 150 A WARNING Risk of crushing and pinching action from spring loaded motor base Can cause serious injury to hands and fingers Improper drive belt removal may cause the motor base to slam down suddenly Read the directions in this manual and on the unit instruction labels before servicing the belts motors or pulleys Follow all directions when servicing the unit 132 Maintenance 13 2 1 Upflow Motor Access 1 Remove the lateral support sheet metal channel under electric box by removing two screws at each end 2 Removed the hinged deadfront panel 30 ton units have open access to the motor 3 Remove two screws on the right side of the low voltage electric box that secure the low volt electric box to the sheet metal shoulder 4 Sw
180. osed to freezing temperatures charge the system with the proper percentage of glycol and water for the coldest design ambient Automotive antifreeze is unacceptable and must NOT be used in any glycol fluid system NOTICE Risk of corrosion Can cause equipment damage Read and follow individual unit installation instructions for precautions regarding fluid system design material selection and use of field provided devices Liebert systems contain iron and copper alloys that require appropriate corrosion protection Contact a water consultant about water quality corrosion and freeze protection requirements Water chemistry varies greatly by location as do the required additives called inhibitors that reduce the corrosive effect of the fluids on the piping systems and components The chemistry of the water used must be considered because water from some sources may contain corrosive elements that reduce the effectiveness of the inhibited formulation Preferably surface waters that are classified as soft and are low in chloride and sulfate ion content should be employed Proper inhibitor maintenance must be performed to prevent corrosion of system components Consult glycol manufacturer for testing and maintenance of inhibitors Commercial ethylene glycol Union Carbide Ucartherm Dow Chemical Dowtherm SR 1 and Texaco E G Heat Transfer Fluid 100 when pure is generally less corrosive to the common metals of construction than water itself It w
181. ower switch to DRAIN position If drain valve is activated sound of solenoid check connection to the board or board itself Ott On No power to the board When no sound present check fuse replace with 3A if needed transformer voltage should be present between fuse holder and ground screw ate SA a te Check drain valve operation drain time possible drain restrictions One flash A n s Water is Check if fill valve leaks not holding supply water Off ps Back pressure may also cause very conductive water conditions sequence drained from the cylinder Check for short cycling tad valve on Tor 10 Water conductivity too high Check water level in the cylinder should be more than one quarter full If it is not check the fill rate 24VAC voltage on fill valve terminals unit must be on with call for humidity green light steady on Verify Two og No curent detection for30 fait minerals blocking the pungen o o oo can peal eae call for humidit If cylinder is more than Y full check primary power connections to seq y the cylinder continuity of wires to cylinder Are power wires connected to proper terminals on the cylinder Color coding Low water conductivity Check L1 to ensure that power is properly connected Check that L1 wire runs through CT of main PCB Cylinder may be defective check for conductivity between powered Three No current detected with pins and H W S should be an opened circuit Ensure all legs are flas
182. ownflow air cooled 105kW 80 ton semi hermetic compressors forward curved and EC fan o Component weights downflow air cooled 105kW 80 ton scroll compressor models forward curv d and EC tan erase t fase ea A Eh A a Ree a Component weights downflow water glycol GLYCOOL 105kW 30 ton all compressor models forward curved and EC fan 1 0 eee eee nas Component weights upflow air cooled 28 42kW 8 12 ton semi hermetic compressor models east seen a gece Rte E e bono Rae eee ahaa at adele da a a Meee eee Meee eae Component weights upflow air cooled 28 42kW 8 12 ton scroll digital scroll compr ssorm dels ii A Oa aes wR mE Pee ad eae Re SE 16 17 18 19 20 21 22 vii Table 40 Table 41 Table 42 Table 43 Table 44 Table 45 Table 46 Table 47 Table 48 Table 49 Table 50 Table 51 Table 52 Table 53 Table 54 Table 55 Table 56 Table 57 Table 58 Table 59 Table 60 Table 61 Table 62 Table 63 Table 64 Table 65 Table 66 Table 67 Table 68 Table 69 Component weights upflow water glycol GLYCOOL 28 42kW 8 12 ton all compressor Models a A a e paar Component weights upflow air cooled 53 77kw 15 22 ton semi hermetic compressor models A A PGA Oh INES eRe obs eh eal Seas Component weights upflow air cooled 53 77kw 15 22 ton scroll digital scroll compressor models ariary Pesce lace E hes a a had A ee et Component weights upflow water glycol GLYCOOL 53 77kW
183. pressure transducer and discharge pressure switch These devices look similar and they must be reinstalled in their original location GO US ON Facility Fluid and Piping Maintenance Facility water and glycol quality remain a requirement throughout the life of the piping system Fluid and piping system maintenance schedules must be established and performed A local fluid maintenance program must be established that will evaluate fluid chemistry and apply necessary treatment A periodic leak inspection of facility and unit fluid piping is recommended Refer to 9 1 4 Requirements of Systems Using Water or Glycol Paradenser Water Cooled Condenser During normal Paradenser operation deposits will collect on inside wall of condenser tubes It must be cleaned periodically to ensure proper operation Frequency of cleaning must be locally established because it varies according to Paradenser usage and local fluid quality See 13 12 Facility Fluid and Piping Maintenance 146 Maintenance 13 13 1 Cleaning Instructions Refer to Figure 1 Downflow model component locations 1 Disconnect power to unit 2 Close field installed isolation valves to isolate this unit s condenser system from facility water or glycol circuit 3 Remove access panel from front of compressor section 4 Locate the 1 2 NPT drain plugs located at lower front of compressor section and provide means to collect fluid drained from system 5 Remove the
184. product performance and is not recommended 1 Remove the middle and bottom panels from the front of the unit For ease of fan removal Emerson recommends removing the infrared humidifier using the approved infrared humidifier removal procedure 3 Ifthe fan to be removed has been lowered into the floor stand position the factory supplied jack and jack support under the fan module so it is safely supported before removing any hardware 4 NOTE A properly positioned jack will be centered between the first and second set of tabs on the jack support The jack will be biased toward the front of the unit If the fan module is fully raised proceed to Step 6 4 Remove any securing hardware used to retain the fan in the lowered position Retain hardware for fan module reinstallation 5 Use the jack to raise the fan module slowly out of the floor stand and into the unit ensuring that the fan motor clears the front frame channel NOTICE Risk of equipment snagging cables and wiring Can cause unit damage Monitor the position of the fan harnesses and other parts while raising the fan to be sure that they are not caught or pinched while the fan is being raised 47 EC Fans Lowering and Removing Figure 41 Removing the EC fans Steps 1 through 5 E Remove Middle Panel from Front of Unit Remove Infrared Humidifier Remove Bottom Panel from Front of Unit
185. r blower outlet and deck dimensional data All dimensions from rear corner of unit including panels O 325mm Blower Outlet lt 98 2489mm Top View Front 17 3 16 17 4 16 erin 433mm ms Geo l Factory Location 15 7 8 CGD Left Side Section View dira Lc oo Xx Y Connection Size Opening Point Description inches mm inches mm inches mm R1A Refrigerant Access Top 83 5 8 2124 2 51 12 x 4 805 x 102 R2 Refrigerant Access Bottom 82 3 4 2102 14 3 4 374 12 3 16 x 4 310 x 102 53kW 15 tons 70 amp 77kW 20 amp 22 ton L1 Liquid Line System 1 94 11 16 2405 16 3 4 425 1 2 5 8 Cu Sweat L2 Liquid Line System 2 91 7 8 2334 16 3 4 425 1 2 5 8 Cu Sweat G1 Hot Gas Discharge 1 88 3 4 2254 16 3 8 416 7 8 1 1 8 Cu Sweat G2 Hot Gas Discharge 2 85 9 16 2173 16 3 8 416 7 8 1 1 8 Cu Sweat R3A Refrigerant Access Side 6 x 17 3 16 152 x 437 CGD Condensate Gravity Drain 3 4 FPT CPD Condensate Pump Discharge Opt 79 5 16 2015 11 7 8 302 1 2 Cu Sweat HUM Humidifier Supply Line 79 5 16 2015 9 7 8 251 1 4 Cu Sweat ECS Econ O Coil Supply 78 5 8 1998 7 7 8 200 2 1 8 Cu Sweat ECR Econ O Coil Return 78 5 8 1998 4 5 8 117 2 1 8 Cu Sweat E1 Electrical Connection High Voltage 75 3 8 1915 30 762 2 1 2 E2 Electrical Connection High Voltage 69 7
186. r fittings where required Refer to 9 0 Piping for piping guidelines and to the ASHRAE Refrigeration Handbook for general good practice refrigeration piping Open the service valves on the compressor Reinsert the plastic bushings Charge the Liebert DS with refrigerant see the unit s nameplate for the proper charge Reinstall the galvanized panels on the left side of the coil Replace the filters Replace the panels Reassembly Checklist 1 Thread cutting bolts reconnected and torqued to 225 in lb 25Nm 2 Top cover plate attached to coil 3 Filter plate attached 4 High voltage wires connected to proper contactors __ a Compressor b Fan motor c Reheat if applicable d Humidifier if applicable e Condensate pump if applicable 5 Low voltage wires connected __ a Actuator b Terminal strip c Plug connections ___d Smoke detector if applicable 6 Coil access plates on right and left replaced 7 Water lines brazed 8 Suction and liquid refrigerant lines brazed 9 Unit recharged 10 Filters replaced 11 Panels replaced 54 Disassembling the Liebert DS for Transport Figure 43 Component dimensions downflow air cooled 28 42kW 8 12 ton semi hermetic compressor models Drawing views are simplified with panels removed to show overall dimensions See disassembly and handling instructions in installation manual O Y O RA Filter amp Electric Box Assemb
187. r stand and floor planning dimensions downflow 28 42kW 8 12 ton models Floor stand and floor planning dimensions downflow 53 77kW 15 22 ton models Floor stand and floor planning dimensions downflow 53 77kW 15 22 ton models with EC fang a tas lee ei ge e Floor stand and floor planning dimensions downflow 105kW 30 ton models Floor stand and floor planning dimensions downflow 105kW 30 ton models with ENANOS A A A A A a lt ta Vid do Blower outlet and deck dimensional data for upflow 28 42kW 8 12 ton Blower outlet and deck dimensional data upflow 53 77kW 15 22 tons Blower outlet and deck dimensions upflow 105kW 80ton 0 0 0 cece ee eee ee Rear return filter box dimensions Upflow unit plenum dimensions ouesse auare eee ee eee een eens Component weights downflow air cooled 28 42kW 8 12 ton semi hermetic Component weights downflow air cooled 28 42kW 8 12 ton scroll digital scroll Component weights downflow water glycol GLYCOOL 28 42kW 8 12 ton all Component weights downflow air cooled 53 77kW 15 22 ton semi hermetic forward curved and EC fan o Component weights downflow air cooled 53 77kW 15 22 ton scroll digital scroll for ward curved and EC fan59 Component weights downflow water glycol GLYCOOL 53 77kW 15 22 ton all Component weights d
188. racer of refrigerant Check system for leaks with a suitable leak detector 6 With pressure still in Circuit 1 open the compressor service valves in Circuit 2 If pressure increases in Circuit 2 the system is cross circuited and must be rechecked for proper piping If there is no pressure increase repeat the leak check procedure for Circuit 2 91 Piping After completion of leak testing release the test pressure per local code and pull an initial deep After four hours check the pressure readings and if they have not changed break vacuum with dry nitrogen Pull a second R 407C and R 22 and third R407C only vacuum to 250 microns or less Recheck the pressure after two hours After completing this step proceed to Variable Fan Ms vacuum on the system with a suitable pump 8 Speed Charging on page 90 9 Remove the jumper hose installed previously from between the service valve fitting and the condenser After completing this step proceed to Lee Temp Charging Lee Temp Charging 1 2 Table 55 Check unit nameplate for refrigerant type to be used Unit control configurations differ depending on refrigerant type Refrigerant charging requires unit operation Refer to 11 0 Checklist for Completed Installation Calculate the amount of charge for the system Refer to the unit condenser and refrigerant line charge data in Tables 50 51 and 52 Weigh in as much of the system charge as possible before star
189. rain line must comply with all local codes 105 Piping Schematics Figure 79 Primary connection locations downflow air Cooled 53 77kW 15 22 ton semi hermetic 4 102mm compressor models NOTE Drawing not to scale Tolerance on all piping dimensions is 1 2 13mm L 16 716 418mm El E2 Ti aa 0000 FRONT VIEW SECTION A A BLOWER OUTLET 408mm FRONT OF U 109 2769mm 16 1 16 B2 All dimensions from rear corner of unit including panels BLOWER OUTLET a DPN00928 Rev 4 Blower Outlet 15 x 11 54 3 8 1381 Xx Y Connection Size Opening Point Description in mm in mm in mm R Refrigerant Access 82 3 4 2102 13 7 8 352 16 7 16 x 4 418 x 102 53kW 15 tons 70 amp 77kW 20 amp 22 tons L1 Liquid Line System 1 97 2464 16 7 8 428 1 2 5 8 Cu Sweat L2 Liquid Line System 2 93 5 16 2370 16 7 8 428 1 2 5 8 Cu Sweat G1 Hot Gas Discharge 1 90 5 8 2302 16 5 8 422 7 8 1 1 8 Cu Sweat G2 Hot Gas Discharge 2 88 2235 16 5 8 422 7 8 1 1 8 Cu Sweat ra Ea humidifier or no humidifier 691 4139 UGE Ab op Seem gcneeting humidifier 69 1 4 1759 30 762 1 1 4 FPT W Optional Pump 69 1 4 1759 30 762 1 2 Cu Sweat HUM Humidifier Supply Line 76 1 2 1943 29 736 1 4 Cu Sweat ECS Econ O Coil Supply 78 5 8 1997 22 1 4 565 2 1 8 Cu Sweat
190. rcuit Dual Circuit Ib circuit kg circuit Ib circuit kg circuit Standard Lee Temp Lee Temp Condenser FSC or includes FSC or includes Models VFD receiver VFD receiver 165 5 2 3 27 12 3 5 2 3 26 11 8 205 7 3 2 56 25 3 7 3 2 54 24 4 251 10 4 6 38 17 2 10 4 6 36 16 3 308 11 5 0 58 26 3 11 5 0 55 24 9 415 25 11 3 107 48 4 24 10 9 102 46 2 510 30 13 6 149 67 6 29 13 2 142 64 4 Quiet Line Condenser Models 143 N A 64 29 0 N A 61 27 7 214 N A 81 36 7 N A 77 34 9 286 N A 125 56 7 N A 119 54 0 409 N A 129 58 5 N A 125 55 8 572 N A 196 88 9 N A 186 84 4 87 Piping 9 2 2 Scroll and Digital Scroll Additional Oil Requirements System charges over 40 lb 18 1kg per circuit may require additional oil charge to be added See Table 53 for the amount required for various system charge levels After the system has been fully charged with refrigerant use a hand pump to add the additional oil at the suction side of the system while the system is running The amount of oil added by field service must be recorded on the tag marked Oil Added Field Service Record attached to each compressor The date of oil addition must be included as well Table 53 Additional oil required per refrigerant charge System Charge Per Circuit Ib kg 401b 60lb solb 100b 120b 140lb 160lb 180Ib 200Ib 18 1kg
191. reely through the drain system and that lines are clear and free of obstructions and in good condition with no visible sign of damage or leaks This unit may also require an external water supply to operate Improper installation application and service practices can result in water leakage from the unit Water leakage can result in severe property damage and loss of critical data center equipment Do not locate unit directly above any equipment that could sustain water damage Emerson recommends installing leak detection equipment for unit and supply lines NOTE Seal openings around piping and electrical connection to prevent air leakage Failure to do so could reduce the unit s cooling performance Condensate Piping Field Installed Do not reduce drain lines Do not expose drain line to freezing temperatures Drain line may contain boiling water Use copper or other suitable material Drain line must comply with local building codes Emerson recommends installing under floor leak detection equipment Gravity Drain Units Without Factory Installed Condensate Pump 3 4 FPT drain connection is provided on units without optional factory installed condensate pump with infrared humidifier or no humidifier 1 1 4 FPT connection is provided on units with steam generating humidifier Pitch drain line toward drain a minimum of 1 8 83mm per 1 foot 805mm of length e Drain is trapped internally Do not trap external to equipment Drai
192. reroute the sensor back through electric box and onto control board on GLYCOOL and dual cool units Piping must be reassembled in accordance with local codes Move the insulation and plastic bushings away from the brazing area Wrap the piping with wet cloths Use copper fittings where required Refer to 9 0 Piping for piping guidelines and to the ASHRAE Refrigeration Handbook for general good practice refrigeration piping Open service valves on compressor Reinsert plastic bushings Charge the Liebert DS with refrigerant see the unit s nameplate for the proper charge Replace the galvanized panels on the left side of the coil Replace the filters Replace the panels Reassembly Checklist 1 Thread cutting bolts reconnected at a torque specification of 225 in lb 25Nm 2 High voltage wires connected to proper contactors __ a compressor b reheat if applicable c humidifier if applicable d condensate pump if applicable 3 Low voltage wires connected a actuator ___b terminal strip ___c plug connections d smoke detector if applicable 4 Coil access plates on left side replaced 5 Motor access plate on right side replaced 6 Water lines brazed 7 Suction and liquid refrigerant lines brazed 8 Unit recharged Filters replaced 10 Panels replaced 66 Disassembling the Liebert DS for Transport Figure 52 Component dimensions upflow air cooled 28 42kW 8 12 ton semi herme
193. rtz lamps with bare hands will severely shorten bulb life Skin oils create hot SN CO BS spots on lamp surface Wear clean cotton gloves when handling lamps Remove humidifier pan see 13 4 1 Cleaning Humidifier Pan and Float Switch Steps 1 through 10 Disconnect power from unit At humidifier remove screws and cover from high voltage compartment Disconnect one end of purple jumper wires Using a continuity meter locate burned out lamp Remove lamp brackets under lamps Loosen two screws securing lamp lead wires to junction block Pull bulb straight down and discard Wrap lead wires once around new lamp s metal ends This will support lamp and allow for thermal expansion Insert lead wires into junction block and torque screws to 30 in lb 10 Reassemble by reversing Steps 1 through 9 Figure 101 Infrared humidifier lamps Infrared Bulbs 137 Maintenance 13 5 Humidifier Steam Generating The humidifier drains and refills to maintain a current setpoint and alert the operator when the humidifier canister needs to be replaced Figure 102Steam generating humidifier canister 13 5 1 Replacing the Steam Generating Humidifier Canister A A A WARNING Risk of electric shock Can cause injury or death Disconnect local and remote power supplies before working within Before proceeding with installation read all instructions verify that all the parts are included and check the nameplate to
194. s 146 13 13 1 Cleaning Instructions ii SI oe ese Ge AOR la id Diane Pa bee heathen 147 13 14 Water Glycol Control Valves 0 0 0 cc eee eee nes 147 13 14 1 Regulating Valves Semi Hermetic and Standard Scroll Compressors 147 13 14 2 Motor Ball Valve Digital Scroll Compressors 00 0 00 ccc ett eee ene 148 TILAS DryCooler SEEM a a e wa TAL 149 14 0 HVAC MAINTENANCE CHECKLIST 000 cece eee eee eee 150 COMPLIANCE WITH EUROPEAN UNION DIRECTIVES 0 0 eee ee eeee INSIDE BACK COVER iii Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8 Figure 9 Figure 10 Figure 11 Figure 12 Figure 13 Figure 14 Figure 15 Figure 16 Figure 17 Figure 18 Figure 19 Figure 20 Figure 21 Figure 22 Figure 23 Figure 24 Figure 25 Figure 26 Figure 27 Figure 28 Figure 29 Figure 30 Figure 31 Figure 32 Figure 33 Figure 34 Figure 35 Figure 36 FIGURES Downflow model component locations Upflow model component locations cnet een eens Liebert DS model number nomenclature anuas 0 cc eee eens Downflow unit ducting and plenum ducting 0 0 0 eee eens Upflow ducting configurations 0 sasssa osoare ee eee eee enn eens Cabinet and floor planning dimensions downflow air cooled 28 42kW 8 12 ton semi hermetic compressor Models Cabinet and floor planning dimensions downflow air cooled 28 42kW 8 12 ton scroll compressor models
195. s necessary Figure 99 Auto belt tensioning motor base Blower Bearing Maintenance ES o il E A Spring Va Housing p _ iz 4 Motor Base Carriage 3 O E Minimum 1 2 z i j q 4 13mm Gap LA 1 L Qu Motor Plate g DPN000995 Adjustment Slot Adjustment Nut Rev 0 Field lubrication is NOT required for the life of the bearing Bearings are permanently sealed and self lubricating and cannot be greased Blower Bearing Inspection OV ae oe Ne 1 Disconnect power to unit Remove drive belts see 13 2 2 Belt Removal Inspect bearing for tightness of set screws and mounting bolts Rotate fan wheel by hand Listen for unusual noise and look for signs of unusual play Blower Bearing Replacement To maximize performance and reliability of Liebert DS equipment use only SealMaster Reduced Maintenance pillow block bearing with tapered lands race and double lock set screws Contact local Emerson representative to order replacement bearings Properly mount and align bearings on shaft Tighten set screws in proper sequence and to proper torque using a torque wrench in accordance with the manufacturer s instructions 134 Maintenance 13 2 4 13 3 13 3 1 13 3 2 Blower Motor Inspect motor at regular intervals Keep
196. sembly 76 1930mm Assembled Filter amp Coil Height Assembly 45 13 16 1164mm 26 al L 105 660mm 131 3327m 2667mm DPN001255 Assembled Length REV 0 Table 45 Component weights upflow air cooled 105kW 30 ton scroll digital scroll compressor models Dry Weight Approximate Including Panels Ib kg Component Air Cooled Dual Cool Compressor Assembly 830 876 830 876 Blower 8 Electric Box Assembly 1080 490 1080 490 Filter 8 Coil Assembly 970 440 1300 590 74 Disassembling the Liebert DS for Transport Figure 60 Component dimensions upflow water glycol GLYCOOL 105kW 30 ton all compressor models W YO Ky PIAN 2 EN Y Drawing views are simplified with panels removed to show overall dimensions See disassembly and handling instructions in installation manual Blower 8 Electric Box Assembly Compressor Assembly 76 1930mm ul Assembled f E y Filter 8 Coil Assembly Height J 76 1930mm FILO al E E 131 3327mm Assembled Length 105 45 13 16 1164mm DPN001256 2667mm REV 0 Table 46 Component weights upflow water glycol GLYCOOL 105kW 30 ton all compressor models Dry Weight Approximate Including Panels Ib kg Semi Hermetic Compressor Scroll or Digital Scroll Compressor Component Wat
197. tage Lee Temp Leak Check and Evacuation Procedure Proper leak check and evacuation can be accomplished only with all system solenoid valves open and check valves accounted for NOTE Q Systems with scroll or digital scroll compressors include a factory installed check valve and an additional downstream Schrader valve with core in the compressor discharge line Proper evacuation of the condenser side of the compressor can be accomplished only using the downstream Schrader valve See piping schematic Figure 69 1 If unit power is available open the unit liquid line solenoid valves using the evacuation function for System 1 and System 2 in the diagnostic section of the Liebert iCOM control If unit power is not available a field supplied 24VAC 75VA power source must be directly connected to each of the unit solenoid valves 2 Attach a jumper hose from the service valve fitting on the outlet of the receiver and the Schrader fitting on the discharge header of the condenser Front seat the service valve approximately two 2 turns 3 For semi hermetic compressors connect refrigeration gauges to the suction and discharge service valves of both compressors 4 For scroll and digital scroll compressors connect refrigerant gauges to the suction rotalock valves and discharge line Schrader valves see Note above on both compressors 5 Starting with Circuit 1 open the service valves and place a 150 PSIG 1034 kPa of dry nitrogen with a t
198. talled condensate trap Do not trap external to the unit Drain line may contain boiling water Select appropriate drain system materials The drain line must comply with all local codes Supplied on Dual Cooling Systems only four pipe system 107 Piping Schematics Figure 81 Primary connection locations downflow air Cooled 53 77kW 15 22 ton with scroll compressor models All dimensions from rear corner of unit including panels A A FRONT VIEW SECTION A A NOTE Drawing not to scale Tolerance on all piping dimensions is 1 2 138mm 16 1 16 408mm BLOWER OUTLET BLOWER OUTLET 4 102mm 12 3 16 Al 310mm OO E1 E2 F 35 889mm RONT OF UNIT DPN00929 98 2489mm Rev 4 X Y Connection Size Opening Point Description in mm in mm in mm R Refrigerant Access 81 3 4 2076 14 3 4 374 12 3 16 x 4 310 x 102 53kW 15 tons 70 amp 77kW 20 amp 22 tons L1 Liquid Line System 1 94 11 16 2405 16 3 4 425 1 2 5 8 Cu Sweat L2 Liquid Line System 2 91 7 8 2334 1 2 5 8 Cu Sweat G1 Hot Gas Discharge 1 88 3 4 2254 7 8 1 1 8 Cu Sweat G2 Hot Gas Discharge 2 85 9 16 2173 425 16 3 4 425 16 3 8 416 16 3 8 416 7 8 1 1 8 Cu Sweat Condensate Drain infrared humidifier or no humidifier 69 1 4 1759 30 762 sa ERT cD Ea hanian 69 1 4 1759 30 762 1 1 4 FP
199. ter glyco GLYCOOL 53 77kW 15 22 ton all compressor models Cabinet and floor planning dimensions upflow air cooled 105kW 30 ton all Cabinet and floor planning dimensions upflow water glycol GLYCOOL 105kW 30 ton All compressors e re Yeru Bel ae aces eS it o a Geiss So s ehh nL ote eae Floor stand dimensions downflow 28 42kW 8 12 ton models o ooooo ooooo Floor stand dimensions downflow 53 77kW 15 22 ton models o oo ooooo Floor stand and floor planning dimension downflow 53 77kW 15 22 tons models with HG fans OENE el DA E Atlee FRED Dae tl earch aad lob aad eh Bad Floor stand dimensions downflow 105kW 30 ton models o ooooooooo eee Floor stand and floor planning dimension downflow 105kW 80 tons models with EC fans Blower outlet and deck dimensions upflow 28 42kW 8 12 ton 00 e ooo Blower outlet and deck dimensions upflow 53 77kW 15 22 ton o ooooooooo ooo Blower outlet and deck dimensions upflow 105kW 80ton 0 0 0 0 eee ee Rear return filter box dimensions o Upflow unit plenum dimensions 0 0 nee eee ne ees Equipment recommended for handling Liebert DS 0 0 0 0 00 anaana aeae REMOVING PACKAGING ti Bo sh Bee we Sew BO HS aR esd ie eta SBE EEO DINE BALE dee RI ood eshte its Remove the unit from the skid 1 eee nent EE EGEL Moving the unit to its installation location 0
200. ter glycol GLYCOOL 105kW 30 ton all compressor models forward curved and EC fan Dry Weight Approximate Including Panels Ib kg Semi Hermetic Compressor Scroll Compressor Component Water Glycol GLYCOOL Dual Cool Water Glycol GLYCOOL Dual Cool Compressor Assembly 1320 600 1320 600 1200 545 1200 545 Filter 8 Electric Box Assembly 270 123 270 123 270 123 270 123 Blower amp Coil Assembly 1820 827 2180 991 1820 827 2180 991 Forward Curve Fan EC Fan 1560 708 1915 870 1560 708 1915 870 63 Disassembling the Liebert DS for Transport 7 5 Disassembly Upflow Units For detailed views of upflow units see Figures 52 through 60 1 2 3 10 11 12 13 14 15 16 Remove the unit from its skid Remove all panels except top front accent Remove all filters on front return units This allows easier access to items located in the filter and coil assembly All wires are hot stamped and all circuit board connectors are lettered for easy replacement Cable ties will need to be cut and replaced as necessary Reference unit wiring schematic on deadfront panel for details Label the 8 quick connect plugs from the compressor compartment and disconnect them Disconnect compressor wire harness including crankcase heater wires if applicable from contactor in electric box Pull conduit and wires into compressor compartment Reheat optional compon
201. the voltage matches available utility power The Liebert COM microprocessor does not isolate power from the unit even in the unit off mode Some internal components require and receive power even during the unit off mode of Liebert iCOM control The factory supplied optional disconnect switch is inside the unit The line side of this switch contains live high voltage The only way to ensure that there is NO voltage inside the unit is to install and open a remote disconnect switch Refer to unit electrical schematic Follow all local codes WARNING Risk of explosive discharge from high pressure refrigerant Can cause injury or death This unit contains fluids and gases under high pressure Relieve pressure before working with piping WARNING Risk of refrigerant system rupture or explosion from overpressurization Can cause equipment damage injury or death For systems requiring EU CE compliance 50Hz the system installer must provide and install a discharge pressure relief valve rated for a maximum of 500 psig 34bar in the high side refrigerant circuit Do not install a shutoff valve between the compressor and the field installed relief valve The pressure relief valve must be CE certified to the EU Pressure Equipment Directive by an EU Notified Body WARNING Risk of contact with high speed moving parts Can cause injury or death Disconnect all local and remote electric power supplies before working in the
202. tic compressor models Drawing views are simplified with panels removed to show overall dimensions See disassembly and handling instructions in installation manual Blower amp Electric Box Assembly 76 1930mm Assembled Filter amp Coil Height Assembly 76 1930mm 45 13 16 1163mm 59 1499mm 85 Assembled Length 2159mm DPNO01171 Rev 0 Table 38 Component weights upflow air cooled 28 42kW 8 12 ton semi hermetic compressor models Dry Weight Approximate Including Panels Ib kg Component Air Cooled Dual Cool Compressor Assembly 800 364 800 364 Blower Electric Box Assembly 510 231 510 231 Filter amp Coil Assembly 520 236 670 304 67 Disassembling the Liebert DS for Transport Figure 53 Component dimensions upflow air cooled 28 42kW 8 12 ton scroll digital scroll compressor models Drawing views are simplified with panels removed to show overall dimensions See disassembly and handling instructions in installation manual Blower amp Electric Box Assembly Compressor Assembly 76 1930mm Assembled Filter amp Coil Assembly Height 76 1930mm 45 13 16 1163mm We 33 2d 13 sA 59 838mm 330mm 1499mm DPN001172 72 1829mm R 0 Assembled Length ev Table 39 Component weights upflow air cooled 28 42kW 8 12 ton scroll digital scroll compressor models Dr
203. tics Figure 76 Primary connection locations downflow air cooled 28 42kW 8 12 ton semi hermetic compressor models NOTE Drawing not to scale Tolerance on all piping dimensions is 1 2 13mm A FRONT VIEW SECTION A A BLOWER OUTLET ALL DIMENSIONS FROM REAR CORNER OF UNIT INCLUDING PANELS X 16 1 16 Y 408mm o 35 889mm FRONT OF UNIT DPAGGUEO3 ai Rev 3 Xx Y Connection Size Opening Point Description inches mm inches mm inches mm R Refrigerant Access 63 1600 13 13 16 351 16 7 16 x 4 418 x 102 L1 Liquid Line System 1 79 3 16 2011 16 3 4 425 1 2 Cu Sweat L2 Liquid Line System 2 76 1 2 1943 16 3 4 425 1 2 Cu Sweat G1 Hot Gas Discharge 1 73 7 8 1876 16 3 4 425 5 8 Cu Sweat G2 Hot Gas Discharge 2 70 1 8 1780 16 3 4 425 5 8 Cu Sweat infrared humidifier or no humidifier 4611168 Bee 743 SAE 60 ed humidifier 46 1168 29 1 2 749 1 1 4 FPT W Optional Pump 46 1168 29 1 2 749 1 2 Cu Sweat HUM Humidifier Supply Line 53 1 2 1359 29 737 1 4 Cu Sweat ECS Econ O Coil Supply 54 7 8 1394 22 9 16 573 1 5 8 Cu Sweat ECR Econ O Coil Return 49 3 8 1254 30 3 4 781 1 5 8 Cu Sweat El Electrical Connection High Volt 55 1 2 1410 31 1 4 794 2 1 2 E2 Electrical Connection High Volt 52 7 16 1332 31 1 4 794 2 1 2 LV1 Electrical Connection Low Volt 2 1 4 57 27 686 7 8 LV2
204. ting the unit NOTICE Risk of improper refrigerant charging Can cause equipment damage Refrigerant R407C is a blend of three components and must be introduced and charged from the cylinder only as a liquid When adding liquid refrigerant to an operating system it may be necessary to add the refrigerant through the compressor suction service valve Care must be exercised to avoid damage to the compressor Emerson recommends connecting a sight glass between the charging hose and the compressor suction service valve This will permit adjustment of the cylinder hand valve so that liquid can leave the cylinder while allowing vapor to enter the compressor Turn on unit disconnect switch Operate the unit for 30 minutes using the charging function for System 1 and System 2 in the diagnostic section of the Liebert COM control The charging function operates the compressor at full capacity and energizes the blower motor and liquid line solenoid valve The reheat and humidifier are disabled A minimum 20psig 138kPa must established and maintained for the compressor to operate The charging function can be reset as many times as required to complete unit charging Lee Temp suction pressure transducer settings R 22 Gauge Sea Level R 407C Gauge Sea Level Absolute Absolute Function Pump Down Cutout psiG kPa 35 241 psiA kPa psiG kPa psiA kPa Pump Down Reset 448 Minimum to Start Cooling
205. ual Filter amp Electric Box Assembly 41 11 16 1059mm 76 1930mm Blower and Assembled Height Coil Assembly 7 i E 59 7 16 838mm 660mm 131 3327mm DPN001058 Assembled Length Rev 1 en 33 23 k 26 gt a 2667mm Table 36 Component weights downflow air cooled 105kW 30 ton scroll compressor models forward curved and EC fan Dry Weight Ib kg Approximate Includes Panels Forward Curved Fans EC Fans Component Air Cooled Dual Cool Air Cooled Dual Cool Compressor Assembly 830 377 830 377 830 377 830 377 Filter amp Electric Box Assembly 270 123 270 123 270 123 270 123 Blower amp Coil Assembly 1820 827 2180 991 1560 708 1915 870 62 Disassembling the Liebert DS for Transport Figure 51 Component dimensions downflow water glycol GLYCOOL 105kW 30 ton forward curved and EC fan all compressor models forward curved and EC fan Drawing views are simplified with panels removed to show overall dimensions See disassembly and handling instructions in installation manual Filter amp Electric Box Assembly 41 11 16 1059mm 76 1930mm Blower and Assembled Coil Assembly Height 59 7 16 1510mm 33 26 r bom 660mm L ne eee 131 3327mm Assembled Length DPN001060 Rev 1 Table 37 Component weights downflow wa
206. ukten n r den r CE m rkt verensst mmer med EU s direktiv De fabrikant verklaart hierbij dat dit product indien het van de CE markering is voorzien conform de EU richtlijnen is Valmistaja vakuuttaa t ten ett mik li tuotteessa on CE merkint se t ytt seuraavien EU direktiivien vaatimukset Produsenten erkl rer herved at dette produktet nar det er CE merket er i samsvar med EU direktiver Producenten erkl rer hermed at dette produkt overholder EU s direktiver nar det b rer CE m rket O KataoKkevaotns nAwvel OTL TO npot v AUTO to onoio p pet o pavon CE eivat CULMOPOO HE TLG o nyie tng E E 2006 42 EC 2004 108 EC 2006 95 EC 97 23 EC Ensuring The High Availability Of Mission Critical Data And Applications Emerson Network Power a business of Emerson NYSE EMR is the global leader in enabling Business Critical Continuity from grid to chip for telecommunication networks data centers health care and industrial facilities Emerson Network Power provides innovative solutions and expertise in areas including AC and DC power and precision cooling systems embedded computing and power integrated racks and enclosures power switching and controls infrastructure management and connectivity All solutions are supported globally by local Emerson Network Power service technicians Liebert AC power precision cooling and monitoring products and services from Emerson Network Power deliver Efficiency Without Co
207. under high pressure Relieve pressure before working with piping WARNING Risk of refrigerant system rupture or explosion from over pressurization Can cause equipment damage injury or death For systems requiring EU CE compliance 50Hz the system installer must provide and install a discharge pressure relief valve rated for a maximum of 500 psig 34bar in the high side refrigerant circuit Do not install a shutoff valve between the compressor and the field installed relief valve The pressure relief valve must be CE certified to the EU Pressure Equipment Directive by an EU Notified Body NOTE The Liebert indoor cooling unit has a factory installed high pressure safety switch in the high side refrigerant circuit A pressure relief valve is provided with Liebert Lee Temp condensers Consult local building codes to determine whether the Liebert Fan Speed Control and VFD condensers will require field provided pressure relief devices NOTICE Risk of oil contamination with water Can cause equipment damage Some Liebert DS Systems require the use of POE polyolester oil See 13 10 1 Compressor Oil for requirements POE oil absorbs water at a much faster rate when exposed to air than previously used oils Because water is the enemy of a reliable refrigeration system extreme care must be used when opening systems during installation or service If water is absorbed into the POE oil it will not be easily removed and will not be remo
208. ved through the normal evacuation process If the oil is too wet it may require an oil change POE oils also have a property that makes them act as a solvent in a refrigeration system Maintaining system cleanliness is extremely important because the oil will tend to bring any foreign matter back to the compressor NOTICE Risk of improper refrigerant charging Can cause equipment damage Refrigerant charge must be weighed into scroll and digital scroll compressors before they are started Starting scroll and digital scroll compressors without proper refrigerant charging can cause the compressors to operate at less than 5 F 15 C evaporator temperature and at less than 20psig 138kPa Operation for extended periods at less than 20psig 138kPa can cause premature compressor failure 85 Piping 9 2 1 Piping Guidelines Air Cooled Units Indoor unit ships with a nitrogen holding charge do not vent the evaporator until all refrigerant piping is in place ready for connection to the unit and condenser Use copper piping with high temperature brazed joints Isolate piping from building using vibration isolating supports Refer to Table 49 for piping sizes Refer to condenser installation manual for charging information Install traps on hot gas discharge lines at the base of vertical risers and every 25 feet 7 6m of vertical rise Consult factory if condenser is installed more than 15 feet 4 6m below the evaporator Consult
209. y Weight Approximate Including Panels Ib kg Component Air Cooled Dual Cool Compressor Assembly 490 223 490 223 Blower amp Electric Box Assembly 510 231 510 231 Filter amp Coil Assembly 520 236 670 304 68 Disassembling the Liebert DS for Transport Figure 54 Component dimensions upflow water glycol GLYCOOL 28 42kW 8 12 ton all compressor models lt p E Drawing views are simplified with panels removed to show overall dimensions See disassembly and handling instructions in installation manual A Blower amp Electric Box Assembly LENN nm Lt nm iil a A 1930mm mnt Filter amp Coil Assembly Assembled MY Ped BY Height HE Tr de 1930mm il 2 9 mil 45 13 16 1163mm Lo ser 1499mm DPN001173 85 2159mm Rev 0 Assembled Length Table 40 Component weighis upflow water glycol GLYCOOL 28 42kW 8 12 ton all compressor models Dry Weight Approximate Including Panels Ib kg Semi Hermetic Compressor Scroll Compressor Component Water Glycol GLYCOOL Dual Cool Water Glycol GLYCOOL Dual Cool Compressor Assembly 950 432 950 432 800 364 800 364 Blower amp Electric Box Assembly 510 231 510 231 510 231 510 231 Filter amp Coil Assembly 520 236 670 304 520 236 670 304 69 Disassembling the Liebert DS for Transport Figure 55 Component

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