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Emerson 220kW User's Manual

1. Table 11 Refrigerant required R 410A approximate Single Circuit Ib circuit kg circuit Dual Circuit Ib circuit kg circuit Condenser Condensers w o Condensers with Condensers with Condensers w o Condensers with Condensers with Models Liebert Lee Temp Liebert Lee Temp Liebert DSE Liebert Lee Temp Liebert Lee Temp Liebert DSE MCS028 2 5 1 2 18 3 8 4 N A N A N A N A MCMO040 3 5 1 6 19 3 8 8 N A N A N A N A MCMO080 8 5 3 8 39 6 18 1 N A 3 5 1 6 19 3 8 8 N A MCM120 N A N A 26 0 11 8 N A N A N A MCM160 N A N A N A 8 5 3 8 39 6 18 1 13 5 9 MCLO055 5 0 2 3 24 2 11 0 N A N A N A N A MCL110 10 7 4 9 49 0 22 2 N A 5 2 2 4 24 4 11 1 N A MCL165 18 4 8 4 79 9 36 2 33 15 N A N A N A MCL220 27 0 12 3 102 9 46 7 39 17 7 12 3 5 6 50 6 23 0 18 8 2 Model MCM120 is available with Liebert DSE receiver a Liebert Lee Temp receiver is not available with the unit Source DPN002411 Rev 3 33 Liebert MC Piping 5 4 5 5 5 6 5 7 5 8 Table 12 Interconnecting piping refrigerant charge Line Size R 407C 1b 100 ft kg 30m R 410A 15 100 ft kg 30m O D in Hot GasLine Liquid Line Hot Gas Line Liquid Line 3 8 3 7 1 7 1 2 6 9 3 1 5 0 2 1 5 8 2 2 1 0 11 0 5 0 1 1 0 51 10 0 4 2 3 4 3 1 1 3 15 7 7 1 1 5 0 67 13 0 5 7 7 8 4 5 1 9 23 0 10 4 2 3 1 0 21 0 9 5 1 1
2. 9 4 3 Maintenance Inspection Checklist Date Prepared By Model Serial Number NOTE Q Regular inspections are necessary to ensure that the cooling fins are clean Should inspection reveal dirt or corrosion appropriate cleaning should be performed Monthly Semiannually Condenser Condenser ___1 Coil surfaces free of debris __ 1 Complete all monthly items ___ 2 Fans free of debris __ 2 Piping in good condition 3 Fans securely mounted 3 Inspect refrigerant lines for signs of oil ___ 4 Motor bearings in good condition leaks Repair leaks as found _ B Check all refrigerant lines and capillaries 4 Check refrigerant charge level in each for vibration isolation Support as receiver tank Gf required based on necessary procedures in the indoor unit s manual Continuous system operation required __ 6 No refrigerant leaks i 5 Wash coil as needed Surge Protection Device If Installed __ Repair bent or damaged fins _ Ll a SPD protection status indicator Condenser Electrical Panel __ 1 Check all electrical connections 2 Check contactors for pitting 3 Operational sequence set points Fan Motors ___ 1 Motor 1 amp draw amps ___ 2 Motor 2 amp draw amps 3 Motor 3 amp draw _ amps 4 Motor 4 amp draw _ amps Notes Signature Make photocopies of this form for your records 59 Liebert MC Troubleshooti
3. Table 16 Analog signal definitions Units C90 Item ID Meaning Imperial Metric FOO Condenser pressure 1 psi bar F01 Condenser pressure 2 psi bar F02 Ambient temperature F C F03 Refrigerant temperature 1 F C F04 Refrigerant temperature 2 F C F10 EC Fan 1 actual speed RPM RPM F11 EC Fan 1 requested speed F20 EC Fan 2 actual speed RPM RPM F21 EC Fan 2 requested speed F30 EC Fan 3 actual speed RPM RPM F31 EC Fan 3 requested speed F40 EC Fan 4 actual speed RPM RPM F41 EC Fan 4 requested speed F50 Subcooling 1 F C F51 Subcooling 2 F C F90 Firmware Version Major F91 Firmware Version Minor 1 02 004 F92 Firmware Version Build Liebert MC 44 Control Operation 8 2 8 2 1 Premium Efficiency Condenser Alarm Codes The following procedure and chart details the alarm codes that may be displayed from the Active and History Alarm registers Active Alarms Menu Description In active alarms menu A press the ENT key to enter its items The active alarm item displays all the active alarms of condenser When there is an active alarm the alarm information ID will be directly displayed When there is no alarm is displayed When there are multiple alarms the alarm information ID s will be displayed according to the time sequence the most recent alarm will be displayed first The operation and items structure of active alarms menu are shown in the following figur
4. 41 Liebert MC Control Operation 8 0 CONTROL OPERATION 8 1 The Liebert MC Premium Efficiency Control takes approximately 30 seconds to boot up once power is applied to the condenser The LED on the Premium Efficiency Control Board reads 888 while the board is booting up Once the control has booted up the display shows F00 and then the value for F00 With the control operational the condenser fan s turn in less than 5 seconds after receiving a signal from the indoor unit that the compressor s are On Consider using UPS equipment on both data center cooling units and Liebert MC condensers to maintain uninterrupted cooling capability For the first 60 seconds of operation after the compressor turns on the condenser fan s will run ata fixed speed set at the factory based on ambient temperature faster at higher temperatures slower at lower temperatures After 60 seconds the control adjusts the fan speed based on the liquid pressure transducer If the liquid pressure transducer fails the condenser uses temperature sensors to control the fan speed based on the liquid line temperature The condenser fans continue to operate for approximately 30 seconds after compressors turn Off The Liebert MC fans have various alarm conditions such as loss of voltage and loss of control signal that will stop the condenser fans Once the alarm condition is no longer present the Liebert MC fans will turn on automatically if compr
5. Do not use the sight glass as an indicator when charging Liebert MC condenser systems Turn On the Liebert MC disconnect switch Turn on the indoor unit disconnect switch Operate the unit for 30 minutes using the charging function of the indoor unit control for each circuit of the system The charging function is in the diagnostic section of the Liebert iCOM control see Liebert iCOM user manual SL 18835 The charging function operates the compressor s at full capacity and energizes the liquid line solenoid valve s The reheat and humidifier are disabled Manual operation of the indoor fans from the diagnostic menu of the Liebert COM is required 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 Attach pressure and temperature instruments to the liquid line of the indoor unit Measure the initial subcooling and continue to add charge until recommended subcooling for the current outdoor ambient temperature is reached See Table 13 The outdoor ambient can be read from the Liebert MC condenser control menu ID F02 35 Liebert MC Piping 3 NOTE To determine subcooling measurement a liquid line pressure reading at the factory installed Schrader tap needs to be measured along with obtaining a temperature reading on the liquid line Convert the liquid line pressure reading into a temperature by u
6. In mm In mm In mm 68 56 54 3 8 35 78 43 5 8 Meer 3 1727 1423 1381 18 457 911 1108 124 1 8 112 118 110 1 2 53 718 61 518 MGETIO Ij 4 3152 z 2848 2806 36 914 1368 1565 180 1 4 73 716 168 114 110 1 2 56 1 8 65 718 73 518 MOLIS 4578 1866 4274 2806 1425 48 1219 1673 1870 mezzo 4 2365 16 129 916 224 3 8 140 172 112 04 go 1524 778 85518 6003 3291 5699 2806 2851 1978 2175 18 legs standard for all models Cross bracing required for legs longer than 18 457mm Number varies according to model and options See Tables 1 and 2 for weights including added weight for legs of various lengths Source DPN002416 Rev 2 Liebert MC 10 Site Preparation Figure 7 Cabinet and anchor dimensions MCL055 MCL110 MCL165 and MCL220 with Liebert Lee Temp receiver Emerson recommends a clearance of 36 915mm on each side for proper operation and component access 55 5 8 1413mm Eyebolts for lifting condenser provided on 3 amp 4 fan models 15 1 4 E oi FOR DUAL 55 1 2 CIRCUIT ONLY For typical footprint 1409mm dimensions see Figure 2 Si E Provided on E 3 amp 4 Fan 1 leg supplied for Ll Models each Liebert 3 Lee Temp 9 kit on 2 3 amp 4 E aura i f del o mm poe E DPN002415 Rev 3 54 3 8 ANCHOR PL
7. under the top deck boards of the skid 3 3 Unit Storage Store the fan in the original shipping packaging in a dry area protected from the weather or protect it from dirt and weather until final installation Avoid temperatures below 30 F 34 C and above 150 F 65 C Avoid storing the Liebert MC condenser for longer than one year 13 Liebert MC Inspection and Installation Unpacking the Condenser All Unit Sizes 3 4 Remove the fence for domestic packaging for export packaging remove the crate 2 Remove corner and side foam planks from around the unit 3 Remove the steel band holding the unit to the skid 4 Set unit legs aside for use later To unpack a condenser with one to two fans L s coil s gt 5 Remove corrugated panels covering the Liebert MC 6 Remove the bolts securing unit to the skid Figure 10 Removing protective material Step 1 Expo Domestic Step 1 Q NANA INES u A AE INGA T AB Steps 3 and 4 ceo e e Rev 1 Detail Area Fasteners in bag attached to legs Unit Legs 14 Liebert MC Inspection and Installation 3 5 Preparing a Condenser for Moving and Installation Units with One or Two Fans The following procedure is one recommended method for removing a Liebert condenser from its shipping skid Other methods may be used provided that they are safe
8. Considerations Condensers should be installed in a location offering maximum security and access for maintenance Avoid ground level sites with public access and areas prone to heavy snow or ice accumulations To ensure adequate air supply Emerson recommends that condensers be installed in an area with clean air away from loose dirt and foreign matter that might clog the coil In addition condensers should be located no closer than 3 feet 1m from a wall obstruction or adjacent unit For roof installation mount the condenser on suitable curbs or other supports in accordance with local codes Condensers must not be installed in a pit Condensers must be installed on a level surface to ensure proper refrigerant flow Usecaution when installing condensers below the indoor unit Condensers must not be installed more than 15ft 4 6m below the indoor unit Condensers with Liebert Lee Temp receivers must be installed at or above the level of the indoor units to maintain proper subcooling Liebert Lee Temp receiver tanks should be mounted on the condenser legs for proper operation Contact Emerson Application Engineering Department for assistance with applications requiring remote mounting of receivers Condensers must be installed in vertical airflow orientation to maintain the electrical box s NEMA 3R rating 2 2 Dimensions and Weights Table 1 Condenser net weights shipping weights dimensions and volume approximate Do
9. DEVICES ADDITIONAL CANbus CABLE CANbus DEVICES Te50 LIEBERT CANbus CABLE p MOC UNIT fe CIRCUIT 2 e LIEBERT INDOOR UNIT TB50 gt im WTHicOM mie CANDUSCABLE pyg MOUNT P J6 mo DPN002374 Pg 2 Rev 1 Liebert MC 24 Piping 5 0 PIPING 5 1 A WARNING Risk of explosive discharge from high pressure refrigerant Can cause equipment damage injury or death Relieve pressure before working with or cutting into piping A WARNING Risk of refrigerant system rupture or explosion from overpressurization Can cause equipment damage injury or death Local building and plumbing codes may require that a fusible plug or other type of pressure relief device be installed in the system Do not install a shutoff valve between the compressor and the field installed relief device Consult local building and plumbing codes for installation requirements of additional pressure relief devices when isolation valves are installed as shown in Figure 18 Do not isolate any refrigerant circuits from overpressurization protection NOTE POE polyol ester oil required with R407C R410A and used with some R22 systems is much more hygroscopic than mineral oils This means that POE oil absorbs water at a much faster rate when exposed to air than previously used mineral oils Because water is the enemy of a reliable refrigeration system extreme care must be use
10. Down arrow until C is on the display 12 Press ENT button 13 Use the Up or Down arrow until C03 is on the display 14 Press ENT button 15 Use the Up or Down arrow to select one of three options Configuration Code Fan Value C03 Fan 1 C04 Fan2 0 No Fan 1 EBM Papst C05 Fan3 2 Ziehl Abegg C06 Fan4 16 Press the ENT button 17 If the new value was entered into the control board the display will flash 888 18 Press the ESC button for C03 to show on the display Liebert MC 52 System Maintenance 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 Repeat Steps 11 thru 18 for the remaining fans configuration codes C04 C05 and C06 Unplug all the contactor output plugs except for the fan to be addressed Plugs listed below P23 Fan 1 P27 Fan 2 P28 Fan 3 P29 Fan 4 Wait 30 seconds Use the Up or Down arrow to select one of the following parameters The correct parameter depends on the supplier of the fan that will be addressed COO EBM Papst fan CO1 Ziehl Abegg fan Press the ENT button Use the Up or Down arrow to the correct fan address number Fan 1 should be 1 fan closest to electric panel end Fan 2 should be 2 etc Press ENT button The display will flash 88 when the command is accepted Press the ESC button for the parameter to be shown on the display Repeat Steps 19 through 25 for the rest of the fans t
11. EN ED 8 1 2 Main Menu Description In initial screen presses ESC key the LED enters the first menu of the main menu The main menu includes four menus Analog Signals Menu Active Alarms Menu History Alarms Menu Configuration Menu In the Main Menu press Up and Down keys to switch to different menus and press the ENT key to enter the submenus of the current menu The operation and structure of main menu are shown in the following figure Figure 26 Main Menu operation and structure Analog Signals Active Alarms History Alarms Configuration Menu Menu Menu Menu Down Up NOTICE Risk of improperly altered configuration menu settings Can compromise equipment Operation Changing the configuration menu settings can cause unanticipated results These settings should be changed only by properly trained and qualified personnel or as directed by the factory 43 Liebert MC Control Operation 8 1 3 Analog Signals Menu Description In analog signals menu F press the ENT key to enter its items The information of analog signal items includes condenser pressure temperature and EC Fan actual speed The display mode is that the item ID and signal value are displayed alternatively The operation and item structure of analog signals menu are shown in the following figure Figure 27 Analog Signals Menu ESC gt EJ E 9 Initial Screen
12. a Condenser for Moving and Installation Units with One or Two Fans 15 3 5 1 Attaching Legs Removing the Skid and Attaching Slings Units with One or Two Fans 15 3 6 Mounting the Condensers sev vues E wa ey cie aw EE OES See ee 17 4 0 ELECTRICAL CONNECTIONS sees eee ee eee eee ees 18 4 1 Line Voltage Warme exe A A A See Nee LG ae 19 4 1 1 Wye vs Delta Connection Power Supply 00 ccc eee eens 20 4 2 Low Voltage Control Wiring Premium Efficiency Control Condenser 21 4 2 1 Electrical Field Connection Descriptions 0 000 c ee eee eens 22 5 0 PIRINEO nee Bee ae Re eae ce Ea LE ee 25 5 1 Piping Guidelines aia D OG RG Ea a UP DIS UE SU 25 5 2 Field Piping Guidelines ato rote eb Eee TU EL RN e 28 5 3 Refrigerant Planning Values 33 5 4 Equipment Application Guidelines lt sv IAE Sore A eee dew ees 34 5 5 Refrigerant Oil Addition Procedures llle 34 5 6 System Dehydration Leak Test 34 5 7 Liebert MC Condenser Charging Units with Liebert Lee Temp Systems 34 5 8 Liebert MC Condenser Charging with Liebert DSE Units esses 34 5 9 Liebert MC Condenser Charging Units without Liebert Lee Temp Systems 35 6 0 6 1 6 2 6 3 6 4 7 0 7 1 7 2 8 0 8 1 8 2 9 0 9 1 9 2 9 3 9 4 10 0 CHECKLIST FOR COMPLETED INSTALLATION 0 0occocccc hh hh 40 Moving and Placing Equipment 40 Electrical iii c ete AX pe tr GR detect ed tendat ie
13. all local and national codes Secure the legs to the mounting surface using a field supplied 1 2 13mm diameter bolt in each of the two 1 2 x 1 12 7x25 4mm obround holes in each leg See Figures 3 through 7 for anchor dimensions 17 Liebert MC Electrical Connections 4 0 ELECTRICAL CONNECTIONS Line voltage electrical service is required for all models Refer to equipment nameplate regarding wire size and circuit protection requirements Electrical service must conform to national and local electrical codes Refer to Figure 16 for electrical service entrances into unit Refer to electrical schematic when making connections A manual electrical disconnect switch should be installed in accordance with local codes Consult local codes for external disconnect requirements All internal wiring is completed at the factory A A WARNING Risk of electrical shock Can cause injury or death The variable speed control may contain a stored electrical charge Disconnect all local and remote electrical power supplies and wait 10 minutes before working within the condenser s main electrical enclosure or fan electrical enclosure The Liebert MC contains lethal voltage in some circuits The line side of the disconnect remains energized when the condenser unit disconnect is switched to the Off position Use a voltmeter to verify that the line side electrical power is Off before making any electrical connections or performing any
14. and 3 on J4 If the condenser is not the last device in the CANbus communication line then both jumpers on J4 and J6 must be placed on Pins 2 and 3 If the jumpers are not in the correct positions CANbus communication errors may occur A jumper must be present at J2 If no jumper is present the control board will not boot properly during power startup Liebert MC 54 System Maintenance Figure 30 EBM small and medium fan Liebert MC series MCS MCM Connect uninsulated drain wires from communication cables to ground connection GND as shown below The drain wires must be tied together with cable ties and routed away from the high voltage terminals NOTE If replacing a Ziehl Abegg fan with an EBM fan the existing ferrule must be removed from the end of the wires on the communication cable for all fans except the last fan Twist wires together before inserting into the terminal block Example Twist RSA labeled conductor of the input cable to RSA labeled conductor of the output cable Insert the wires into the properly marked terminal on the fan two wires per RSA RSB and GND t terminal as shown in Detail A COMMUNICATION CABLE Li CONNECTION FROM DETAIL A GND PREVIOUS FAN OR ELECTRICAL BOX TIGHTENING TORQUE INTERNAL WIRING CABLE GLAN COMMUNICATION CABLE OF EC FAN TO THE ENCLOSURE AND CONNECTION TO THE AROUND THE CABLE NEXT FAN NOT USED ON 2 5Nm 22 LBS IN LAST FAN Figure 31 E
15. buildup occurs may create head pressure problems with the evaporator units When to Clean the Condenser Coil Normal conditions typically dictate cleaning twice a year spring and fall On site or area conditions such as cottonwood trees construction etc can increase cleaning frequency On your standard monthly preventive maintenance schedule Emerson recommends a visual inspection of the coil to monitor conditions 49 Liebert MC System Maintenance 9 2 2 9 2 3 What to Use to Clean the Condenser Coil The best overall condenser coil cleaner to use is plain water If the coil has been maintained and cleaned at regular intervals water is sufficient to remove dirt and debris from the fins Heavy build up on the exterior of the fins can be removed with a brush Water pressure from a garden hose and sprayer usually works well If a pressure washer is used make sure the equipment is set to a lower pressure setting and that the nozzle is set to the fan spray not stream Otherwise damage to the fins could result If a cleaner is required Emerson recommends using a neutral cleaner neither acidic nor base Acid type cleaners can damage the coil fins and surrounding areas Many sites do not allow the use of acidic cleaners for environmental reasons How to Clean the Condenser Coil The Liebert MC coil is accessible for cleaning through the innovative cleaning window design allowing you to clean the coil without removing the fans f
16. eade 40 PAP Se eck Sh RIS RU EEUU i BANE LEA BERR E EB E QS 40 Other Suess cai th ees AA LI D dias a SMe aaa aha LE M puce oie ee EN cte De aces 40 INITIAL STARTUP CHECKS AND COMMISSIONING 0 0000 eee eee e eee hh 41 Startup ld AAA kas hosed Se eS aad pev RS Liens a VO Qd uy Bg 41 InitialStartup lt 28 A AA A A AA A Bee bs LES 41 CONTROL OPERATION sara os ce eue AQ Rx ada a ee 42 Premium Efficiency Control Board and Interface 0 eens 42 8 1 1 Initial Screen Upon Power On nassaan annarar eanne cece es 43 8 1 2 Main Meng Deseripti rni s i e nete eer Ru eR efus D ER RS echas ds 43 8 1 8 Analog Signals Menu Description 44 Premium Efficiency Condenser Alarm Codes 0 0 00 c cee eee ene eens 45 8 2 1 Active Alarms Menu Description 45 8 2 2 History Alarms Menu Descripti0M o oooooo teens 46 SYSTEM MAINTENANCE coria A oe ae See be Ce cee eee X EPE 49 General Procequres gt Loo a e OG ap Rats area acu e dace d ag eee Sap dE ides OMe 49 Gondenser Cl anings cu lige ESL A Be ARR ANA EAT Eme 49 9 2 1 When to Clean the Condenser Coil 49 9 2 2 What to Use to Clean the Condenser Coll o oooooocooooooconocr ar 50 9 2 3 How to Clean the Condenser Coil 1 0 0 ccc cence n 50 Fan Replacement icio t e bes ri Lag bed wel ORG I ete ea dk peg Pese 51 Premium Efficiency Control Board Replacement 0000 c cee eee eese 56 9 41 Replacement Preparation 0 0 0 0 llle 56 E Installati
17. extremely hot during normal operation Wear thermally insulated gloves and appropriate protective clothing and allow time for components to cool when working within the cabinet or electric control enclosure 1 Liebert MC Important Safety Guidelines A A CAUTION Risk of sharp edges splinters and exposed fasteners 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 explosive discharge of high pressure gas Can cause injury Relieve system pressure and verify that the indoor and outdoor units are Off before making piping connections disconnections NOTICE Risk of overhead interference Can cause unit and or structure damage Refer to the installation plans before moving the unit to verify clearances NOTICE Risk of improper storage Can cause unit damage Keep unit upright and protected from contact damage Liebert MC Liebert MC Nomenclature LIEBERT MC NOMENCLATURE Model Number Part 1 2 Model Details Part 2 2 1 2 3 4 5 6 7 8 9 10 117 12 13 14 15 16 17 18 19 20 21 22 23 24 25 M C M 0 4 0 E 1 A D O0 A 0 V U 0 0 0 0 0 0 i t F 1 2 Unit Family MC Microchannel Condenser 12 Pan
18. for personnel the condenser and equipment 3 5 1 Attaching Legs Removing the Skid and Attaching Slings Units with One or Two Fans 1 Attach legs to the unit at indicated locations Use the fasteners provided with the legs Recommended tools for attachment is a 5 8 socket and ratchet More legs may be available for installation than shown This will depend on the unit type and number of fans Figure 11 Attaching legs to one fan or two fan condensers LE 308111 Rev 1 Detail B 2 Place slings around the unit between the unit and the top deck boards of the skid One fan and two fan units against the inside of the attached legs Three fan and four fan units against the outside of the attached eye bolts 3 Use spreader bars a lift beam and a crane to lift the unit off the skid NOTICE Risk of improper lifting Can cause equipment damage Make sure that the spreader bars wider are than the unit If the spreader bars are too short the slings may crush the unit Figure 12 Securing slings to condensers for lifting off skid Straps or chains go against eyebolts on three fan and four fan units Straps go against legs on one fan and two fan units 308111 Pg 2 Rev 1 15 Liebert MC Inspection and Installation a g Lift the unit 24 610mm off the top deck of the skid Move the skid from under the unit A mechanized method is preferred but if not available uses a minimum of four
19. gets into the inside of the motor Do not hold the jet spray directly on the motor openings and seals During cleaning work using a jet spray no guarantee is assumed regarding corrosion formation paint adhesion for unpainted painted fans Liebert MC 50 System Maintenance 9 3 Fan Replacement A A A WARNING Risk of electric shock Can cause injury or death Disconnect all local and remote electric power supplies and wait 10 minutes before working within condenser main electrical enclosure or fan electrical enclosure Unit contains potentially lethal electrical voltage Line side of factory disconnect remains energized when disconnect is Off Use a voltmeter to make sure power is turned Off before checking any electrical connections or functions Only properly trained and qualified personnel may perform repair maintenance and cleaning operation WARNING Risk of high speed rotating fan blades Can cause injury or death Fan blades can start rotating without warning at any time during a cooling cycle or after power is restored after a power failure Disconnect all electrical power supplies to the unit verify with a voltmeter that the power is Off and verify that all fan blades have stopped rotating before working on or near the fans CAUTION Risk of contact with hot surface Can cause injury Use proper skin protection when touching the electronics housing or allow time for the housing to cool before r
20. legs longer than 18 457mm Number varies according to model and options See Tables 1 and 2 for weights including added weight for legs of various lengths Source DPN002372 Rev 2 DPN002373 Rev 3 7 Liebert MC Site Preparation Figure 4 Condenser planning dimensions MCM040 MCM080 MCM160 with without Liebert Lee Temp Emerson recommends a clearance of 36 915mm on each side for proper H T operation and component access At Height to Top of Fan Guard See table below for dimensions Eyebolts for lifting F G and H condenser provided on four fan models 46 1 4 1175mm For dual H circuit only Height zi of Fan Guard 1168mm 46 5 16 1177mm jo x 39 5 16 One Fan amp 999mm Condenser 2 B 44 3 8 119 1127mm W i Les ANCHOR PLAN ANCHOR PLAN One Fan Condenser For typical footprint dimensions see Figure 2 Provided On Four Fan Models i DPN002172 Rev 3 DPN002189 Rev 4 1177mm Leg Height Liebert No A B c D F In Model Fans In mm In mm In mm In mm In mm mm G H MCM040 1 57 3 16 1453 48 1219 46 5 16 1177 18 457 31 5 8 803 39 5 8 1006 MCMO80 2 105 1 4 2674 96 1 16 2440 94 7 16 2398 36 914 49 5 8 1260 57 5 8 1464 MCM160 4 202 7 16 5142 113 1 2 2883 192 1 4
21. properly protected individuals to turn the unit upright so that the legs point down Unit legs must be pointing toward the ground Remove skid set condenser on floor 308111 Pg 3 Rev 1 Set the upright unit on the ground so the legs support unit weight Remove the straps from around unit One fan and two fan units Route the straps through the large holes in the side of the legs Spreader bars are still required On three fan and four fan units Secure straps or chains to the eyebolts on top of the unit Spreader bars are still required NOTICE Risk of improper lifting Can cause equipment damage Make sure that the spreader bars wider are than the unit If the spreader bars are too short the slings may crush the unit The unit is ready to be lifted and moved to its installation location Liebert MC 16 Inspection and Installation Figure 14 Lifting condensers with one two three or four fans Spreader Bars must be wider than the Liebert MC to prevent crushing force Straps or chains go through eyebolts on three fan and four fan units Straps go through holes in legs on one fan and two fan units 308111 Pg 3 Rev 1 3 6 Mounting the Condenser The condenser must be installed so that it is level within 1 2 13mm to ensure proper refrigerant flow For roof installation mount the condenser on suitable curbs or other supports follow
22. teenies Remove skid set condenser on floor eee es Lifting condensers with one two three or four fans 00 eee eee Wye vs Delta power supply connection diagram 0 eee ees Typical connections Premium Efficiency Control 0 0 cc cece eee Field configurations and setting adjustments Premium Efficiency Control Pipingschematc 5a boe ae E Slate at BeBe p ae e Rb OR D P ete EAD es Liebert MC Condenser piping Single circuit units sese Condenser piping for single circuit condensers with Liebert Lee Temp MC se teers 2 Piping dimensions dual circuit two fan and four fan units 2 0 0 0 0 cece ees Piping dimensional data with Liebert Lee Temp dual circuit condensers Premium efficiency fan control board 0 ccc ee eect e ene tenn eees Premium Efficiency Control Interface Human Machine Interface HMI Initial controller displays lt 3 ese ei ein Bahn PS 49 ie a eee E PS Bn oS ee Main Menu operation and structure Analog Signals Menu a SAE ee eek EE Active alarms menu a bb ln UE se RA ER Se History alarms MEU aem i ohn SA Re Ria a RC es as RR EBM small and medium fan Liebert MC series MCS MCM 0 000 EBM large fan Liebert MC series MCL 1 een een nes Ziehl Abegg small medium and large fan Liebert MC series MCS MCM and MCL Jumper locations on Control Board iii Table 1 Tabl
23. the Liebert MC is mounted higher than the indoor evaporator Subcooling adjustment is needed when the Liebert MC is more than 40 ft 12m above evaporator NOTE Subcooling should be viewed at the Liebert MC condenser for a minimum of 1 minute and the subcooling should be approximately 2 F before recording subcooling to be compared against subcooling from the field refrigerant gauges and thermometers Liebert MC 36 Piping Sample Calculations The Liebert MC is 40 ft 12 2m above the evaporator of an R 407C system The outdoor ambient from the Liebert MC condenser control menu ID F02 is 94 8 F 34 9C The liquid pressure is 300psig 2068kPa and 113 F 45 C The subcooling from the Liebert MC control is 5 F 2 8 C Determine the subcooling and verify the calculated subcooling against the reading of the Liebert MC control menu ID F50 amp F51 Evaporator Subcooling Calculation Refrigerant Type R 407C 1 Ambient Temperature 94 8 F 34 9 C 2 Condenser Elevation 40 ft 12 2m 3 Condenser Elevation Temperature Correction 4 F 2 2 C 4 Liquid Line Pressure 300psig 2068kPa 5 Liquid Pressure Converted to Temperature 120 3 F 49 0 C 6 Measured Liquid Line Temperature 113 2 F 45 1 C 7 MC Condenser Subcooling Reading Menu ID F50 for Circuit 1 or 5 F 2 8 C Menu ID F51 for Circuit 2 Subtract Line 6 Measured Line Temperature from Line 5 Liquid Pressure converted to Temperature to
24. the old control board that is being removed If the Liebert MC condenser is the second condenser on the CANbus communication line set Position 1 of the CANbus DIP switch from On to Off Change the jumper positions for J2 J4 J5 and J6 to match the old control board If the Liebert MC condenser is the last device on the CANbus communication line move the jumper at J6 from Pins 2 and 3 to Pins 1 and 2 see Figure 33 Power up the unit Change the parameters to match the parameters from the old control board if they can be obtained from the old board See Step 18 if parameters were unavailable If the old board parameters were unavailable use the new HMI label included in kit to obtain the proper settings Parameters C03 C04 C05 and C06 must be programmed with the proper EC fan supplier used on the unit then address the fans refer to 9 3 Fan Replacement Compare the HMI label that is on the unit with the latest revision If there are differences clean and dry the surface of the old HMI label stick the new label on top of the old label Completely cover the old label with the new Verify that the control board is reading pressure and temperature Verify that there are no communication alarms with the fans or the with the cooling unit the Liebert MC is serving Verify proper fan operation by adjusting the cooling unit that this condenser serves so that it calls for cooling Liebert MC 58 System Maintenance
25. 4883 94 7 16 2398 96 3 16 2444 48 1219 61 5 8 1565 69 5 8 1768 Source DPN002172 Rev 3 DPN002189 Rev 4 60 1524 73 5 8 1870 81 5 8 2073 18 legs standard for all models Cross bracing required for legs longer than 18 Number varies according to model and options See Tables 1 and 2 for weights including added weight for legs of various lengths Source DPN002172 Rev 3 and DPN002189 Rev 4 Liebert MC Site Preparation Figure 5 Condenser planning dimensions MCM120 Emerson recommends a clearance of 36 915mm on each end and each side 46 1 4 for proper operation and component access 1175mm 152 3 4 Shown with typical 60 legs 3880mm See table below for dimensions A B and C Fastener assembly fender washer and hex nuts 4 each required 2 places 144 5 16 Spacer 3666mm 2 each required 2 places DETAILA 1169mm Liebert DSE receiver adds 8 1 2 216mm to the unit width and may be mounted on the right or left side For typical footprint dimensions see Figure 2 1 7 8 94 7 16 46 5 16 1177mm 2398mm al 44 3 8 u 1127mm a Install two 2 each 1 8 3 18mm 39 5 16 E leg spacers in each of these 999mm locations see note below o 9i ANCHOR PLAN NOTE Install 2 two condenser leg spacers part number 304679P1 in two places where shown between each pair of legs that a
26. 8 7 8 3 5 39 3 17 8 3 9 1 8 34 9 15 6 1 3 8 11 8 5 4 59 8 27 1 5 5 2 5 53 2 23 8 1 5 8 16 7 7 6 Charge based on Type ACR Type L copper pipe Source DPN002411 Rev 3 Equipment Application Guidelines Pump down must be disabled on the indoor unit when using the Liebert MC condenser due to the reduced volume in the condenser coil When applying the Liebert MC condenser to existing Liebert indoor units Emerson recommends adding a discharge line check valve and crankcase heater to provide suitable compressor protection Additional liquid line Schrader ports are required at the indoor unit to properly charge systems with Liebert MC condensers applied Refrigerant Oil Addition Procedures Consult the user manual for the indoor unit to determine whether additional oil is required for each circuit Factors such as compressor condenser type piping lengths and total circuit refrigerant charge influence this requirement System Dehydration Leak Test Procedures for leak check and evacuation of the entire refrigeration system are contained in the indoor unit s installation manual Use the proper manual section corresponding to the winter control system used on the condenser with or without Liebert Lee Temp or Liebert DSE receivers and the refrigerant to be charged into the system Liebert MC Condenser Charging Units with Liebert Lee Temp Systems Consult the indoor unit s manual for
27. 9111 Fax 39 049 5841 257 Asia 29 F The Orient Square Building F Ortigas Jr Road Ortigas Center Pasig City 1605 Philippines 63 2 687 6615 Fax 63 2 730 9572 EmersonNetworkPower com AC Power Embedded Computing Outside Plant Racks amp Integrated Cabinets Connectivity Embedded Power Power Switching amp Controls Services DC Power Infrastructure Management amp Monitoring Precision Cooling Surge Protection Emerson Business Critical Continuity Emerson Network Power and the Emerson Network Power logo are trademarks of Emerson Electric Co or one of its affiliated companies 2011 Emerson Electric Co
28. AN 138 1mm Leg Height of A B C D E F G H Model Fans in mm in mm in mm in mm in mm In mm In mm In mm 68 56 54 3 8 35 7 8 43 5 8 MGLOSS 1 1727 a 1423 1381 18 1437 911 1108 124 1 8 112 118 110 1 2 53 7 8 61 5 8 MCL110 2 3152 2848 2806 36 914 4368 1565 180 4 73 716 168 14 110 1 2 56 118 65 718 73 5 8 MCL165 3 4578 1866 4274 2806 1425 48 1219 1673 1870 236 5116 129 9 16 224 3 8 110 112 112 1 4 77 718 85 5 8 MCL220 4 6003 3291 5699 2806 2851 60 1524 4978 2175 18 legs standard for all models Cross bracing required for legs longer than 18 457mm Number varies according to model and options See Tables 1 and 2 for weights including added weight for legs of various lengths Source DPN002415 Rev 3 11 Liebert MC Inspection and Installation 3 0 INSPECTION AND INSTALLATION 3 1 Equipment Inspection Before unpacking the condenser verify that the labeled equipment matches the bill of lading Carefully inspect all items for damage either visible or concealed Report any damage immediately to the carrier and your local Emerson representative File a damage claim with the carrier and send a copy to your local Emerson representative 3 1 4 Packing Material All material used to package this unit is recyclable Save it for fu
29. BM large fan Liebert MC series MCL Connect uninsulated drain wires from communication cables to ground connection GND as shown below The drain wires must be tied together with cable ties and routed away from the high voltage terminals NOTE If replacing a Ziehl Abegg fan with an EBM fan the existing ferrule must be removed from the end of the wires on the communication cable for all fans except the last fan Twist wires together before inserting into the terminal block Example Twist RSA labeled conductor of comMunicaTON CABLE the input cable to RSA labeled CONNECTION FROM conductor of the output cable PREVIOUS FAN GND Insert the wires into the properly URSREBTHGN BOX marked terminal on the fan two COMMUNICATION CABLE INTERNAL WIRING wires per RSA RSB and GND METER EN OF EC FAN TIGHTENING TORQUE OF TEOBEGAD terminal as shown in Detail B LAST FAN 25Nm 22 LBS IN 55 Liebert MC System Maintenance Figure 32 Ziehl Abegg small medium and large fan Liebert MC series MCS MCM and MCL COMMUNICATION CABLE CONNECTION FROM PREVIOUS FAN CONNECT UNINSULATED DRAIN WIRE FROM COMMUNICATION OR ELECTRICAL BOX CABLES TO THIS GND CONNECTION COMMUNICATION CABLE CONNECTION TO THE NEXT FAN NOT USED ON LAST FAN TIGHTENING TORQUE OF THE CABLE GLAND INTERNAL WIRING TO THE ENCLOSURE AND AROUND THE CABLE OF EC FAN 2 5Nm 22 LBS IN 9 4 Premium Efficiency C
30. Fan detection error For cause 1 check EC Fan 1 Communication between EC communication circuit Fan and PCB board failure For cause 2 replace EC Fan 1 4 15 EC Fan ds communication failure 2 EC Fan 485 communication For cause 3 replace PCB board failure For cause 4 check fan model is 3 Board has problems not set for 0 check that the 4 EC fan not receiving power contactor for the particular fan is energized and check fan fuses NOTE 1 4 means the EC Fan addresses For example 1 4 00 means 100 for EC Fan1 and means 200 for EC Fan2 and means 300 for EC Fan3 and means 400 for EC Fan4 Lieber MC 48 System Maintenance 9 0 SYSTEM MAINTENANCE 9 1 9 2 9 2 1 A WARNING Risk of electrical shock Can cause injury or death Unit contains potentially lethal voltage in some circuits Disconnect all local and remote electric power supplies and wait 10 minutes before working in the unit The line side of the unit disconnect switch remains energized when the switch is in the Off position Use a voltmeter to make sure power is turned Off before making any electrical connections Only properly trained and qualified personnel may perform repair maintenance and cleaning operations A WARNING Risk of high speed rotating fan blades Can cause injury or death The fan blades can start rotating without warning any time during a cooling cycle or after power is restored after a power failure Disconnect all local a
31. L l Af med Indicator Lights ON Signal Present Jl 2 1 24VAC p e 9 tecvce E aay SASOMASALOO g m LMM C A Inputs H PA d and signal indication l solo Circuit 1 FA TIASA 250VAC Remote 1 Shutdown Circuit 2 E ee I Mother m e e e e e CV01M1 Board N VER A02 2010 08 10 d 1 Alarm amp Shutdown A Fuses are rated to 3A 250V 301471 Pg 2 Rev 3 57 Liebert MC System Maintenance 9 4 2 Installation A WARNING g 10 Remove the mechanical fasteners holding the control board in place and remove the old control 11 12 13 14 15 16 17 18 19 20 21 22 Risk of arc flash and electric shock hazard Disconnect all local and remote electric power supplies and wear appropriate personal protective equipment per NFPA 70E before working within the electric control enclosure or the fan motor connection box es Failure to comply can cause serious injury or death This unit contains lethal voltage The line side of the unit disconnect switch remains energized when the unit disconnect switch is in the Off position Use a voltmeter to verify that the line side inpu
32. No action is needed 019 Condenser temperature Sensor 2 Condenser temperature Sensor 2 Replace condenser temperature failure damaged Sensor 1 020 Condenser temperature Sensor 2 Condenser temperature Sensor 2 Replace condenser temperature failure damaged Sensor 2 021 Condenser temperature 1 high alarm High temperature alarms Fix fan 022 Condenser temperature 2 high alarm Mi AEN Fan failure and leari colls clogged coils 023 Condenser temperature 1 low alarm ow tein orato Consult factory Low temperature alarms consult i factory 024 Condenser temperature 2 low alarm EC Fan speed mode maximum must 025 be overridden due to refrigerant Refrigerant temperature 1 high No action is needed temperature 1 high EC Fan speed mode maximum must 026 be overridden due to refrigerant Refrigerant temperature 2 high No action is needed temperature 2 high 47 Liebert MC Control Operation Table 18 EC Fan alarm information Alarm ID Meaning Possible Cause Handling Method For cause 1 check if EC Fan is 1 4 00 EC Fan high link current EE a locked gea For cause 2 replace EC Fan 1 4 01 EC Fan drive error EC Fan is damaged Replace EC Fan 1 4 02 EC Fan earth to ground fault EC Fan is damaged Replace EC Fan 4 EC Fan is locked a 1 check if EC Fan is 1 4 03 EC Fan electronics heat sink thermal 2 EC Fan is damaged For cause 2 replace EC Fan overload 3 Ambient temperature is
33. Precision Cooling For Business Critical Continuity Liebert MC User Manual 60Hz Air Cooled Microchannel Condensers sw 20 ty Q EMERSON Network Power TABLE OF CONTENTS IMPORTANT SAFETY GUIDELINES 0 0 0 c eee eee ee eee eee eee eee eee eee 1 LIEBERT MC NOMENCLATURE 000 cece eect eee ee eee ee eee ee eee eee nnn 3 1 0 INTRODUCTION 0 06 cok 2 hs Sk hee Genta oa ae eti ek Ce ea eat aa eu ari aes 4 1 1 C ntrol Ean Types s rs Lowe mies rs a ea a ple dest 4 1 1 1 Premium Efficiency Control EC Fan 0 0 00 ence eens 4 1 1 2 Liebert Lee Temp Refrigerant Control 0 0 0 cece eee cence eens cece eeenes 5 1 2 Sound Level iuc i Ed a Pia duet define Seres 5 1 21 Liebert Quiet Line Match Up cc eee ence ene eees 5 1 3 Surge Protection Device Optional 0 0 ee s 5 2 0 SITE PREPARATION 4 ova ies mtu Oe ceed Re race RR ally we E EE D eee 6 2 1 Site Considerations 2255 cono a a fal ae 3420094 da Ada Rae ala eH 6 2 2 Dimensions and Welghts ee hh hes 6 3 0 INSPECTION AND INSTALLATION 2000 cece cece eee eee eee eee eee eee 12 3 1 Equipment Inspection Vue so VES TAN OLI VA ING ERU a CLR oe Ok Ade 12 Sil Packing Material coe Ee uh eoe eos UR egt Gua knee d s a cR UU ERE 12 3 2 Handling Unit on the Skid 1 eee n nes 13 3 3 Wit Storage co ee a Pie O Nh aee E tuta 13 3 4 Unpacking the Condenser All Unit Sizes llle 14 3 5 Preparing
34. SC button for C24 to show on the display Use the Up or Down arrow until C34 is on the display Press ENT button If Fan 1 is currently running the fans speed should be displayed in terms of percentage of full speed If Fan 1 is not running 0 00 should be displayed Use the Up or Down arrow to enter 100 speed Press the ENT button The display will read 88 if the command was accepted Fan 1 should speed up to 100 and all the other fans should stay the same If Fan 1 is not running or any of the other fans also speed up to 100 the fan addressing procedure Steps 19 through 25 must be repeated Press the ESC button for the parameter to be shown on the display Repeat Steps 4 through 9 for the rest of the fans if present C35 for Fan 2 C36 for Fan 3 C37 for Fan 4 All fans should be at 100 speed 5Use the Up or Down arrow until C24 is on the display Press the ENT button In the System Control configuration parameter use the Up or Down arrow to select 1 Press the ENT button The display will flash 88 if the command was accepted Press the ESC button for C24 to be shown on the display All fans should return to a normal speed based on the pressure input and the state of indoor unit s compressor PCB Notes J4 and J6 are the CANbus termination jumpers If the condenser is the last device in the CANbus communication line the jumper must be placed between pins 1 and 2 of J6 and between pins 2
35. __ 4 Piping is properly sized sloped and trapped for proper oil return 5 Piping is routed to reduce potential of rub through or chaffing 6 Hot gas line on Liebert Lee Temp is fastened to the side of the cabinet and isolated for vibration reduction 6 4 Other 1 Fans rotate freely and in proper direction EC fans rotate counterclockwise in operation as viewed from the fan guard side 2 Foreign material removed from in and around all equipment installed construction materials construction debris etc 3 Installation materials and tools have been removed from in and around all equipment literature shipping materials tools etc __ 4 Blank startup sheet located ready for completion by installer or start up technician Liebert MC 40 Initial Startup Checks and Commissioning 7 0 INITIAL STARTUP CHECKS AND COMMISSIONING A Risk of electric shock Can cause injury or death Disconnect all local and remote electric power supplies and wait 10 minutes before working within condenser main electrical enclosure or fan electrical enclosure Unit contains potentially lethal electrical voltage Line side of factory disconnect remains energized when disconnect is Off Use a voltmeter to make sure power is turned Off before checking any electrical connections or functions Only properly trained and qualified personnel may perform repair maintenance and cleaning operation A Risk of high speed rotating fan bla
36. a voltmeter verify that voltage is no longer present at the unit Wait a minimum of 10 minutes to allow the EC Fan capacitors to discharge before proceeding 2 Remove fan cover disconnect electrical connections internal to EC fan and remove cable glands from EC fan see Figures 31 32 and 33 3 Remove hardware that mounts EC fan to condenser body 4 Reinstall electronic cover Maximum torque for the fan cover screws is 2 3Nm 20 in lb 51 Liebert MC System Maintenance 5 Install a spreader bar over the EC fan NOTICE Risk of improper fan rigging Can cause equipment damage MCL model EC fans weigh over 901b 40 8kg each and MCS and MCM EC fans weigh over 401b 18 1kg each Make sure that the wire harness is secured out of the way before lifting the fan 6 Verify that lifting cable chains are not coming into contact with fan blades before lifting 7 Install new fan in unit and connect mounting hardware connect electrical cable glands Torque for cable glands is 2 5Nm 22 in 1b Make sure fan blades rotate freely when installed in unit Reconnect wiring to proper terminals and verify that run jumper is in place Refer to Figures 30 31 and 32 for wiring details Torque for electrical terminals are 1 3Nm 11 5 in 1b 8 Turn power On 9 The control board will flash 00 on the display when it has completed its boot cycle Refer to Figures 23 and 24 10 Press the ESC button 11 Use the Up or
37. atch Up Special match ups of premium condensers are available for applications needing to meet even lower governmental sound regulations Lower sound levels are achieved by oversizing the condenser which will decrease the maximum airflow and sound level produced by the condenser at design outdoor air temperatures This feature requires special setup of the indoor unit Liebert Lee Temp may be required for these applications Surge Protection Device Optional An optional surge protection device SPD can be field wired to protect the condenser from surges that threaten sensitive equipment The condenser s electrical panel provides a terminal block to allow the SPD to be wired in parallel with the high voltage power An additional low voltage terminal block is provided on condensers with Premium Control Boards to allow monitoring of the SPD alarm circuit The Liebert PowerSure CM surge protection device provides 50kA per mode of surge current protection An illuminated green LED indicates the SPD is On and providing full protection An illuminated red LED indicates that the device s protection may have been reduced and may require replacement Both lights extinguished indicates there is no power to the condenser or the condenser disconnect is in the Off position 5 Liebert MC Site Preparation 2 0 SITE PREPARATION 2 1 Site
38. be capable of measuring to 10 psig 103 4kPa and 2 F 1 1 C for best subcooling measurement Check indoor nameplate for refrigerant type to be used Unit control configurations differ depending on refrigerant type Refrigerant charging requires unit operation Refer to the indoor unit s user manual for details regarding indoor unit operation and 6 0 Checklist for Completed Installation for the Liebert MC condenser operation Calculate the amount of charge for the system Refer to the indoor unit user manual and condenser and refrigerant line charge data in Tables 10 and 12 Accurately weigh in as much of the system charge as possible before starting the unit Do not exceed the calculated charge by more than 0 5 lb 37kg NOTICE Risk of improper refrigerant charging Can cause equipment damage Refrigerant R 407C and R 410A are blended refrigerants 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 NOTICE Risk of refrigerant overcharge Can cause equipment damage
39. bert MC 30 Piping Figure 21 Piping dimensions dual circuit two fan and four fan units Vertical Leaving Liquid Inverted traps in refrigerant Line lines are internal to the condenser Do not trap Se external to the unit Rs Horizontal Entering Hot Gas Line Circuit fA Gircuit 2 Field Piping Optional fusible plug service kit to be brazed into the liquid line s in either the vertical or horizontal position where required vertical position is preferred horizontal position is optional for two circuit systems one fusible plug kit will need to be installed in each circuit DPNO002425 Rev 3 Table 8 Piping dimensions dual circuit two fan and four fan units of Connection Sizes OD in Model Fans Hot Gas Line Liquid Line McMo0 2 78 s MCL110 2 1 1 8 7 8 MCM160 4 1 1 8 7 8 MCL220 4 1 3 8 1 1 8 Source DPN002425 Rev 3 31 Liebert MC Piping Figure 22 Piping dimensional data with Liebert Lee Temp dual circuit condensers Hot Gas Line To Condenser Entering Hot Metal Clamp On Isolator Detail AA Fasten hot gas line to cabinet using flat surface clamps with isolators field supplied Position elbow to direct relief valve downward Inverted traps in refrigerant See Detail AA lines are internal to pas Hot Gas Line the condenser Do not t
40. charging systems with Liebert Lee Temp receivers These procedures will be identical to systems with fin tube condenser coils but the refrigerant volumes will be much lower Consult Tables 10 and 11 for condenser with Liebert Lee Temp refrigerant required Liebert MC Condenser Charging with Liebert DSE Units Consult the Liebert DSE s manual SL 18925 for charging Liebert DSE systems All Liebert DSE units require installation of a Liebert DSE receiver on each condenser circuit with or without a Liebert EconoPhase pump module installed Consult Table 11 for condenser and receiver refrigerant requirements Liebert MC 34 Piping 5 9 Liebert MC Condenser Charging Units without Liebert Lee Temp Systems Liebert MC condensers are charge sensitive and require accurate calculation of the system charge to avoid overcharging To avoid overcharge additional guidelines are recommended to ensure trouble free operation When charging system in an outdoor ambient below 50 F 10 C recheck the subcooling against Table 13 when the ambient is above 60 F 15 6 C The indoor space should be maintained at 70 to 80 F 21 to 26 7 C return air before final charge adjustments are made Charging unit at greater than 80 F 26 7 C return air may result in the unit being overcharged Charge by subcooling measurement at the indoor unit See Table 13 for target subcooling temperatures Pressure and temperature measuring instruments should
41. clean and that the ends of the tubes have been carefully reamed to remove any burrs Ensure that all loose material has been cleaned from inside the tubing before brazing Protect all refrigerant line components within 18 460mm of the brazing site by wrapping them with wet cloth or suitable heat sink compound Isolate piping from building using vibration isolating supports Refer to the indoor unit s user manual for appropriate piping sizes Install traps on the hot gas discharge lines at the bottom of any rise over 5 feet high If the rise exceeds 25 feet 7 5m then install a trap in 20 foot 6m increments or evenly divided Pitch horizontal hot gas piping down at a minimum rate of 1 2 per 10 ft 42mm per 10m so that gravity will aid in moving oil in the direction of refrigerant oil flow Consult factory if Liebert Lee Temp condenser is below the evaporator or if a condenser not equipped with Liebert Lee Temp is more than 15 ft 4 6m below the evaporator Consult factory if piping run exceeds 150 feet 46m equivalent length on traditional DX units 25 Liebert MC Piping Consult factory if piping run exceeds 300 feet 91m actual length or 450 feet 137m equivalent length on units installed with Liebert EconoPhase units Keep piping clean and dry especially on units with POE oil R407C R410A or R22 refrigerant Avoid piping runs through noise sensitive areas Do not run piping directly in front o
42. d lug terminal for earth ground connection Ground terminal strip for fan motor ground connection Primary High Voltage Entrance Three 7 8 22 2mm diameter knockouts located at the bottom of the enclosure SPD Field Connection Terminals High voltage surge protection device SPD terminals SPD is an optional device CANbus Terminal Connections Field terminals for CANbus cable connection 5A is the CANbus connectors TB49 1 is the input terminal for CANbus high TB49 3 is the input terminal for CANbus low TB50 1 is the output terminal for CANbus high TB50 3 is the output terminal for CANbus low Each CANbus cable shield is connected to terminal SH see 9 below 5B is the END OF LINE jumper 5C is the CANbus DEVICE ADDRESS DIP SWITCH CANbus cable not by Liebert See requirements in 4 2 Low Voltage Control Wiring Premium Efficiency Control Condenser Remote Unit Shutdown Replace exiting jumper between Terminals TB38 1 and TB38 2 with field supplied normally closed switch having a minimum 75VA 24VAC rating Use field supplied Class 1 wiring Alarm Terminal Connections a Common Alarm Relay indicates when any type of alarm occurs TB74 1 is common TB74 2 is normally open and TB74 3 is normally closed 1 Amp 24VAC is the maximum load Use field supplied Class 1 wiring b Shutdown Alarm Relay indicates when condenser loses power or when a critical alarm has occurred that shuts down the co
43. d to operate with Terminals 70 and 71 wired to indoor unit compressor contactor side switch to indicate compressor on signal For dual circuit condensers also use Terminal 230 These signals are required if CANbus communication with Liebert iCOM is not used 21 Liebert MC Electrical Connections 4 2 1 Electrical Field Connection Descriptions Figure 16 Typical connections Premium Efficiency Control Fan 2 With Liebert Liebert Lee Temp Z receiver tank Fan 1 1 per circuit L Without Liebert Ts Lee Temp Electrical connection box with cover Electrical service connection Pigtails in electric handy box are factory wired to Liebert Lee Temp heater pads for field connection of separate continuous electric source wire not by Emerson d PY a esa EE EE e e E 0g Li a E iz err E 6 co Hc 6 o B DPN002169 DPN002374 Pg 1 Rev 2 Pg 1 Rev 1 Liebert MC 22 Electrical Connections Key Electrical Details Typical Connections Premium Efficiency Control 1 10 Three Phase Electrical Service Terminals are on the top of the disconnect switch for one fan and two fan units Terminals are on the bottom of the disconnect switch for three fan and four fan units Three phase service not by Emerson See 4 1 1 Wye vs Delta Connection Power Supply Earth Ground Fiel
44. d 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 removed 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 or plug the microchannel coil Always use a flow of dry nitrogen when brazing Piping Guidelines Indoor units and condensers both ship with holding charges of inert gas Do not vent the condenser until all refrigerant piping is in place ready for connection to indoor unit and condenser Use copper piping with a brazing alloy with a minimum temperature of 1350 F 732 C such as Sil Fos Avoid soft solders such as 50 50 or 95 5 Use a flow of dry nitrogen through the piping during brazing to prevent formation of copper oxide scale inside the piping When copper is heated in the presence of air copper oxide forms POE oil will dissolve these oxides from inside the copper pipes and deposit them throughout the system clogging filter driers and affecting other system components A pure dry nitrogen flow of 1 3 ft min 0 5 1 5 1 s inside the pipe during brazing is sufficient to displace the air Control the flow using a suitable metering device Ensure that the tubing surfaces to be brazed are
45. des Can cause injury or death Fan blades can start rotating without warning at any time during a cooling cycle or after power is restored after a power failure Disconnect all electrical power supplies to the unit verify with a voltmeter that the power is Off and verify that all fan blades have stopped rotating before working on or near the fans 7 1 Startup Checklist Refer to 6 0 Checklist for Completed Installation and verify that all installation items have been completed before beginning to start the condenser 7 2 Initial Startup 1 Locate Liebert Condensers Warranty Inspection Check Sheet Document PSWI 8542 407 CO 2 Turn the condenser disconnect On 3 Turn the indoor unit ON and set for cooling to allow operation of condenser 4 Check the fans for proper rotation Counterclockwise when viewing the unit from the fan guard top side Check that air is being drawn through the coil and discharged out the fan assembly 6 Complete Liebert Condensers Warranty Inspection Check Sheet Document PSWI 8542 407 CO e NOTE This document must be completed and forwarded to your local Emerson sales office to validate warranty Contact your local Emerson sales representative or Emerson Network Power Liebert Services support about any questions or problems during unit startup and commissioning Local Emerson sales offices and Liebert Precision Cooling support contacts can be found at www liebert com or by calling 1 800 LIEBERT
46. djoin each other Use 4 four of part number 301375G1 fastener assembly 301369P1 washer fender and 301392P1 nut hex DPN002555 to secure each pair of legs and spacers together Rev 1 Leg Height B C A In mm In mm In mm 18 457 31 5 8 803 39 5 8 1006 36 914 49 5 8 1260 57 5 8 1464 48 1219 61 5 8 1565 69 5 8 1768 60 1524 73 5 8 1870 81 5 8 2073 18 legs standard for all models Cross bracing required for legs longer than 18 Number varies according to model and options See Tables 1 and 2 for weights including added weight for legs of various lengths Source DPN002555 Rev 1 Liebert MC Site Preparation Figure 6 Condenser planning dimensions MCL055 MCL110 MCL165 and MCL220 55 5 8 Height to To 1413mm e of Fan Guard Eyebolts for lifting condenser provided on 3 amp 4 fan models See Table 3 for dimensions F G and H Emerson recommends a clearance of 36 915mm on each side for proper operation and component access For typical footprint dimensions see Figure 2 1409mm ANCHOR PLAN D E 53 7 8 1368mm Provided on 48 3 4 1239mm 3 4 Fan Models Electric Box End DPN002416 Rev 2 Table 3 Condenser leg height and additional weight MCL055 MCL110 MCL165 and MCK220 of A B C D E Leg Height G H Model Fans in mm in mm in mm in mm in mm F
47. dling a Liebert condenser Lift Beam Slings Forklift and Spreader Bars Crane AN 308111 Pg 1 Rev 1 3 2 Handling Unit on the Skid Transport unit using a forklift or a crane with sling and spreader bars Figure 9 If using a fork lift make sure the forks if adjustable are spread to the widest allowable distance to still fit under the skid Type of fork lift used will be dependent on the terrain the unit to be moved across during handling Minimum fork lift fork length for use on 1 and 2 fan units to be 48 1219mm When moving the packaged unit do not lift the unit any higher than 6 152mm off the ground If circumstances require the unit to be lifted higher than 6 152mm great care must be exercised and all personnel not involved in moving the unit must be at least 20 5m from the lift point of the unit Forklift position with one fan or two fan condensers I 308111 um DECIES DNE When using a forklift to off load or move for installation it is recommended to lift one narrow end off the ground no more than 6 152mm Use the forklift to push or pull the unit When using a crane to lift the unit from a flat bed or to move for installation using slings rated for the unit weight is recommended Spreader bars are to be used for sling stability and to prevent unit pinching Make sure spreader bars are wider than the unit Slings are to be placed near the ends of the unit
48. e The meanings of alarm information ID are found in Tables 17 and 18 Figure 28 Active alarms menu ENT Down No Al o Alarm 105 304 210 033 Up 45 Liebert MC Control Operation 8 2 2 History Alarms Menu Description In history alarms menu H press ENT key to enter its items The history alarm items display 100 history alarm records of the condenser The item ID is for the sequence number of the history alarms The display mode is that the item ID and alarm information ID are displayed alternatively When there is no alarm is displayed Alarm history can be cleared using the C98 configuration menu item The operation and items structure of history alarms menu are shown in the following figure The meanings of alarm information ID are given in Tables 17 and 18 Figure 29 History alarms menu Down H01 or 001 H02 105 H03 304 H04 Hoo Up JE Liebert MC 46 Control Operation Table 17 System alarm information Alarm ID Meaning Possible Cause Handling Method Communication circuit missing or Check communication circuit 000 CAN communication failure d Ignore alarm on condensers amaged without CAN connections 001 Ethemetcomm nication failure Ethernet hardware or connection Ignore alarm Ethernet connection failure is not present 002 USB communication failure USB device or file is damaged Replac
49. e 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 TABLES Condenser net weights shipping weights dimensions and volume approximate 6 Condenser net weight addition taller legs 2 0 0 eee eee nes 6 Condenser leg height and additional weight MCLO55 MCL110 MCL165 and MCK220 10 Electrical data three phase 60Hz condenser Premium Version EC control 19 Electrical data Liebert Lee Temp receiver 60HZ cc noo 20 Liebert MC Condenser piping sizes single circuit units 0 0 0 eee nes 29 Condenser piping connection sizes single circuit condensers with Liebert Lee Temp 30 Piping dimensions dual circuit two fan and four fan units 0 0 0 eee 31 Piping dimensions dual circuit condensers with Liebert Lee Temp 0005 32 Refrigerant required R 407C approximate 0 0 eee s 33 Refrigerant required R 410A approximate 0 0 cc s 33 Interconnecting piping refrigerant charge 0 ccc oo 34 Target subcooling for ambient outdoor temperature 0 00 ccc eee ene eee 36 Difference in subcooling measurements Indoor minus outdoor 0 0 0 cee eee 37 Liquid pressure and temperature chart 2 0 0 ccc eee teens 38 Analos signal definitions tura d ens ev yack we esac dk Ree we thee bak Stay Bee cee Palos ha Tad 44 System a
50. e USB device or file 003 Data corruption Memory chip is damaged Replace PCB board 004 System error itcm ann Reboot If reboot fails consult factory 1 Remote shutdown signal is For Cause 1 check the remote 005 Remote shutdown available shutdown signal 2 TB38 is not connected For Cause 2 connect TB38 006 Shutdown due to EC Fan alarm All fans have failed Consult factory 007 SPD alarm SPD damaged Replace SPD 008 Condenser pressure Sensor 2 failure Condenser pressure Sensor 1 Replace condenser pressure damaged Sensor 1 009 Condenser pressure Sensor 2 failure Condenser pressure Sensor 2 Replace condenser pressure damaged Sensor 2 010 Condenser pressure 1 high alarm A High pressure alarms Fix fan and 011 Condenser pressure 2 high alarm High pressure Fan failure clean coil clogged coils 012 Condenser pressure 1 low alarm Low pressure Loss of charge Low pressure alarms Check for refrigerant leak 013 Condenser pressure 2 low alarm EC Fan speed mode maximum must 014 be overridden due to condenser Condenser pressure 1 high No action is needed pressure 1 high EC Fan speed mode maximum must 015 be overridden due to condenser Condenser pressure 2 high No action is needed pressure 2 high 016 Ambient temperature sensor failure Ambient temperature sensor Replace ambient temperature damaged sensor 017 Ambient temperature high alarm Ambient temperature high No action is needed 018 Ambient temperature low alarm Ambient temperature low
51. e connector from the transformer for loose terminals Fuse located next to P24 has blown Verify that the fuses next to P24 have not blown Replace as needed 24V transformer has failed With a voltmeter verify that the output from the transformer is 24Vac 10 If the value exceeds 10 verify that the correct primary leads are being used Control Board PEC BEC has failed If there is no output voltage verify that the primary connections are secure and receiving the correct voltage If they are replace the transformer Fan will not run Jumper not installed between 24V and DIN1 for Ziehl Abegg fan motor Install jumper between 24V and DIN1 for Ziehl Abegg fan motor Liebert MC 60 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 prod
52. ection terminal provided near the factory installed disconnect switch see Figure 16 NOTE Liebert Lee Temp kits require a separate line voltage electrical supply for the heated receivers See Table 5 for power requirements Electrical data three phase 60Hz condenser Premium Version EC control Power Requirements Number FLA WSA OPD Model of Fans 208 230V 380 415V 460V 208 230V 380 415V 460V 208 230V 380 415V 460V MCS028 1 30 14 14 38 18 18 15 15 15 MCM040 1 2 3 1 4 1 4 3 2 1 9 1 9 15 15 15 MCM080 2 4 6 2 8 2 8 5 5 3 3 3 3 15 15 15 MCM120 3 6 9 4 2 4 2 7 5 4 6 4 6 15 15 15 MCM160 4 9 2 5 6 5 6 9 8 6 0 6 0 15 15 15 MCLO055 1 5 7 2 8 2 8 7 1 3 5 3 5 15 15 15 MCL110 2 11 4 5 6 5 6 12 8 6 3 6 3 15 15 15 MCL165 3 17 1 8 4 8 4 18 5 9 1 9 1 20 15 15 MCL220 4 22 8 11 2 11 2 24 2 11 9 11 9 25 15 15 1 FLA Full Load Amps WSA Wire Size Amps OPD Maximum Overcurrent Protection Device 2 208V 460V premium models must be connected to Wye 3 phase systems 19 Liebert MC Electrical Connections Table 5 Electrical data Liebert Lee Temp receiver 60Hz Rated Voltage Single Phase 120 208 230 Watts Receiver 150 300 150 300 Amps 1 4 2 8 0 7 1 4 Wire Size Amps 1 8 3 5 0 9 1 8 Maximum Overcurrent 15 15 15 45 Protection Device Amps The Liebert Lee Temp receiver requires a separate power
53. el Material 3 Platform Size A Bright Aluminum S Small 13 Connection Pipe Unit of Measurement M Medium 0 Inches Std ACR Copper L Large 14 Legs Included 4 6 Nominal Condenser Capacity kW Example 040 40kW 95 F 35 C 8 27 R 15 K ITD V 18 Tall Legs Std X 36 Tall Legs with Bracing 7 Control Fan Type Y 48 Tall Legs with Bracing E Premium amp EC Fan Z 60 Tall Legs with Bracing 8 Refrigerant Circuits System Refrigerant type 15 Agency Certification 1 Single Refrigerant Circuit R 410A U CSA Listed Marked with CSA c us logo 2 Dual Refrigerant Circuit R 410A 1 CSA listed IBC OSHPD Seismic Certification 7 Single Refrigerant Circuit R 407C R 22 0 No Agency Listing 8 Dual Refrigerant Circuit R 407C R 22 16 Sound Level 9 Power Supply 0 Standard Sound A 460V 3ph 60Hz 17 Liebert Lee Temp Configuration Y 208 230V 3ph 60Hz 0 None Standard 2 380 415V 3ph 60Hz 10 Packaging 1 Factory Set for Liebert Lee Temp Kits D Domestic Non Stackable Horizontal Airflow Orientation E Export Crating Non Stackable Horizontal Airflow Orientation 18 21 Undefined Reserved For Future Use 22 25 Factory Configuration Number 11 Coil Coating 0 None E E Coat Epoxy Liebert MC Introduction 1 0 INTRODUCTION 1 1 Pr
54. electrical and or mechanical service and or maintenance operations WARNING Risk of high speed rotating fan blades Can cause serious injury or death Fan blades can automatically start rotating without warning at any time during a cooling cycle or after power is restored after a power failure Disconnect all local and remote electric power supplies and verify with a voltmeter that the power is off and that the fan blades have stopped rotating before working within the cabinet or servicing fan motors Each unit is shipped from the factory with all internal wiring completed Refer to the electrical schematic supplied with the condenser when making line voltage supply low voltage indoor unit interlock and any low voltage alarm connections All wiring must be done in accordance with all applicable local state and national electrical codes NOTE 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 NOTE Use copper wiring only Make sure that all connections are tightened to the proper torque mentioned on the component Liebert MC 18 Electrical Connections 4 1 Table 4 Line Voltage Wiring A WARNING Risk of electrical fire and short circuit Can cause property damage injury or death Select and install the line side electrical supply wire and overcurrent protection device s acco
55. eplacing parts The electronics housing can get hot and can cause severe burns 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 for MCL models weigh in excess of 921b 40 8kg each and fan modules for MCS and MCM models weigh in excess of 401b 18 1kg each Use OSHA approved lifting techniques proper body mechanics and extreme caution to avoid injury and dropping of fans during removal and installation NOTE If at any time a parameter is entered and the display does not show 888 or it displays Err try to re enter the parameter If the display still shows Err after ENT is pressed power cycle the control board by unplugging P24 waiting 15 seconds and plugging P24 back in Contact the factory if the parameter still displays Err after ENT is pressed NOTE If replacing a Ziehl Abegg fan with an EBM fan the existing ferrule must be removed from the end of the wires on the communication cable for all fans except the last fan Twist wires together before inserting into the terminal block Example Twist RSA labeled conductor of the input cable to RSA labeled conductor of the output cable Insert the wires into the properly marked terminal on the fan two wires per RSA RSB and GND terminal as shown in detail A on EBM MCS MCM series drawing 1 Turn off power to the unit using the disconnect With
56. essors are On Premium Efficiency Control Board and Interface The Liebert MC Premium Efficiency Control board has a stacked board arrangement There are three seven segment LED s and four keys as human machine interface see Figure 24 3 NOTE Indicator lights should be on to indicate signal is present See Figure 23 1 2 and 8 Figure 23 Premium efficiency fan control board r T Spare Analog Outputs Not Used RS485 Communication toFans RS485 Service i Termina 9 sur BAR CODE Fc z 1P8 eene e 6 mooo ses 59 i a este Communication 1 Bi HA e E e from E Les e o o m 1 Spare Digital indoor unit e 5 o eoe Outputs Not CANbus H 64 Used Tm le z d C ication gt J T ie o n CD 5 Fan 4 indoor unit R m 5 eed a s 1 a 8 35 US Fan Fan os Gl H Contactor Service e m CPU Human a Fan 2 Output 4 Board s e e Machine Circuit 1 EF le elle Interface 1 o le e e HMI a Fan 1 Pres
57. f the Liebert MC control type The system works by flooding the condenser coil with liquid refrigerant to a level that balances the system condensing requirements with the condenser coil surface available to reject the system heat During the summer the system requires the entire condenser coil surface for heat rejection and most of the refrigerant is stored in the receiver In the winter the same amount of heat can be rejected by only a fraction of the coil surface As head pressure begins to fall the control valve restricts the flow of liquid refrigerant existing from the condenser This extra liquid refrigerant reduces the effective condenser surface area available for heat transfer The head pressure control valve also bypasses hot gas into the receiver to warm the liquid and maintain liquid pressure for proper operation of the expansion valve Liebert Lee Temp kit is optional for condensers and is field installed Condenser control boards are factory configured for Liebert Lee Temp if ordered with Liebert Lee Temp receivers They can be field configured if Liebert Lee Temp system is added later Sound Level Liebert MC condensers utilize low air resistance coil s and slower speed fan motors to yield the required heat rejection at significantly lower sound levels EC fans are designed to yield the same maximum sound levels at summer design conditions to help your facility meet noise codes with moderate operating sound levels Liebert Quiet Line M
58. f indoor unit discharge airstream Refrigerant oil do not mix oil types or viscosities Consult indoor unit for refrigerant type and oil requirements NOTE Q Failure to use compressor oils recommended by compressor manufacturer will void compressor warranty Consult Emerson or the compressor manufacturer for further recommendations or if you have questions about compressor oils Refer to ASHRAE Refrigeration Handbook for general good practices for refrigeration piping 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 receivers A fusible plug is factory installed in the Liebert DSE receivers Consult local building codes to determine if condensers without receivers will require field provided pressure relief devices A fusible plug kit is available for field installation Liebert MC 26 Piping Figure 18 Piping schematic Head Pressure Liebert Lee Temp Receiver Control Valve Condenser T Condenser Optional Field Installed Coil a Fusible Plug l UN For rises over 25ft 7 6m Evaporator trap every 20ft 6m or at Coil evenly divided distances for 50Hz EU CE units Val External alve Compressor Equalizer solation Valve Hot Gas Discharge i l I Field installed relief valve s required I I Expansion solenoid Sight Filter Dr
59. feed for heaters The condenser is not designed to supply power to the receiver heater pads 4 1 4 Wye vs Delta Connection Power Supply Figure 15 Wye vs Delta power supply connection diagram Wye Power Supply Connection Winding B Winding Winding C Phase A Phase B Neutral Phase C Delta Power Supply Connection Winding A B Winding B C NOTE The Liebert MC Condenser is designed to operate with Wye connected power with a solidly grounded neutral The Liebert MC condenser Premium EC Fan Models will not operate properly with Delta connected power A field supplied isolation transformer or other power solutions will be needed to for proper condenser function NOTE The electronically commutated motors included in the Liebert MC are suitable for connection to power supplies with a solidly grounded neutral Acceptable Power Supplies 208V to 480V Nominal Units 208V wye with solidly grounded neutral and 120V line to ground 380V wye with solidly grounded neutral and 220V line to ground 480V wye with solidly grounded neutral and 277V line to ground Unacceptable Power Supplies 208V to 480V Nominal Units Wye with high resistance or impedance ground Delta without ground or with floating ground Delta with corner ground Delta with grounded center tap Liebert MC 20 Electrical Connections 4 2 Low Voltage Control Wiring Premium Efficiency Control Condenser NOTICE R
60. hat need to be addressed After the last fan is addressed unplug the power plug P24 from the control board Wait 30 seconds Plug all the contactor output plugs back into the board in their correct positions Plug P24 back into the control board Once the control board has completed its boot cycle and all the contactors are energized wait 5 seconds Press the ESC button Use the Up or Down arrow until A is on the display Press ENT button Use the Up or Down arrow to see if any of the following errors are shown 115 Unable to communicate with Fan 1 215 Unable to communicate with Fan 2 315 Unable to communicate with Fan 3 415 Unable to communicate with Fan 4 If any of these errors appear check the communication wiring at the problem fan and the fan before it If the wiring is correct and properly wired to the terminal and none of the errors mentioned in Step 35 are displayed press the ESC button 53 Liebert MC System Maintenance Verify the Fan Address Verify that each fan has a unique address by 17 18 19 20 21 22 23 Use the Up or Down arrow until C is on the display Press the ENT button In the Manual System Control Selection parameter use the Up or Down arrow until C24 is on the display In the Manual Control configuration parameter press ENT button Use the Up or Down arrow to select 0 Press the ENT button The display will read 888 if the command was accepted Press the E
61. ier Liquid Line Isolation Valve Valve Glass Valve Trap at base of risers over 5ft 1 5m Refrigerant Piping Components are not supplied by aa Liebert but are recommended for Field Piping proper circuit operation and V Service Schrader Access Connection No Valve Core maintenance xy Service Schrader Access Connection With Valve Core NOTES Single refrigeration circuit shown for clarity DPNO002188 Schematic representation shown Do not use for specific connection locations Rev 1 27 Liebert MC Piping 5 2 Field Piping Guidelines One discharge line and one liquid line must be field installed for each circuit of the indoor unit and the outdoor condenser s Dual circuit condensers are available for most dual circuit indoor unit applications Refer to Figures 18 through 20 for additional field installed piping needed at the condenser This piping is needed for proper system performance and for installation interconnecting receivers and head pressure control valves for Liebert Lee Temp systems NOTE Keep the evaporator unit and condenser closed with their factory charge of inert gas while all field piping is installed Keep the field piping clean and dry during installation and do not allow it to stand open to the atmosphere When all the field interconnecting piping is in place vent the condenser s inert gas charge and connect to the field piping Finally vent the evaporator unit s charge of iner
62. ional information Table 2 Condenser net weight addition taller legs Leg Height Additional Weight by Condenser Model Ib kg In mm MCS028 MCM040 MCMO80 MCM120 MCM160 MCL055 MCL110 MCL165 MCL220 36 914 120 120 139 242 236 127 148 222 242 48 1219 151 151 171 304 283 159 179 269 289 60 1524 183 183 202 367 330 190 210 316 336 Liebert MC 6 Site Preparation Figure2 Typical footprint dimensions all units 13 16 21mm 2 1 2 3 5 8 93mm 1 7 8 48mm 2 1 2 64mm TZ XT Su 12 7mm x 25 4mm 93mm Obround 1 7 8 48mm Figure3 Condenser planning dimensional data MCS028 42 3 4 51 5 8 1310mm 51 5 8 42 3 4 1310mm 1085mm Pegar ta Top of Fan Guard Height to Top of Fan Guard C ie a recommends a y clearance of 36 915mm 44 1 8 42 1 2 Pd on each side for proper 1121mm 1079mm 42 1 2 44 1 8 operation and component 1079mm 1121mm access 15 1 4 ANCHOR PLAN 387mm 42 1 2 1079mm For typical footprint h dimensions see Figure 2 qa 40 7 8 Lu x One Fan 35 7 8 1038mm oO Condenser 910mm 2 DPN002372 DPNO002373 9 Rev 2 Rev 3 ui Leg Height B C A In mm In mm In mm 18 457 31 5 8 803 39 5 8 1006 36 914 49 5 8 1260 57 5 8 1464 48 1219 61 5 8 1565 69 5 8 1768 60 1524 73 5 8 1870 81 5 8 2073 18 legs standard for all models Cross bracing is required for
63. isk of control malfunction Can cause improper unit operation Make sure that all low voltage electrical wiring has been performed per the schematic diagram provided and that all low voltage wiring connections are tight Premium Efficiency Control condensers are designed to use CANbus communication between Liebert MC and Liebert iCOM control on indoor unit The CANbus wiring is field supplied and must be shielded 24 18AWG stranded tinned copper twisted pair minimum 8 twists per foot low capacitance 17pf ft or less plenum rated NEC type CMP if required by local codes UV and moisture resistant or run within conduit once in an outdoor environment and must be temperature and voltage rated for conditions present Examples Belden part number 89207 plenum rated or Alpha Wire part number 6454 UV resistant outdoor rated category 5 5e or higher Do not run the CANbus cable in the same conduit raceway or chase used for high voltage wiring For CANbus network lengths greater than 350ft 107m contact Emerson for assistance The CANbus wiring is for communicating directly with future versions of the Liebert iCOM but is not currently active When CANbus wiring is installed place a jumper between Terminals 70 71 230 Contact Liebert Precision Cooling Support for additional information relative to availability of iCOM software versions that communicate directly to the condenser Premium Efficiency Control condensers are also designe
64. larm Information 47 EC Earn alarm informationens i nin e A Ae da tt 48 Troublesh ottng A IR HE yl be RI e x ee i ee brie US 60 Important Safety Guidelines IMPORTANT SAFETY GUIDELINES SAVE THESE INSTRUCTIONS This manual contains important safety instructions that should be followed during the installation and maintenance of the Liebert MC 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 A A WARNING Risk of improper handling installation and service Can cause property damage injury or death Only trained and qualified personnel should work on this unit Read all installation operation and safety alerts and instructions and wear appropriate protective headgear safety glasses gloves and clothing before installing operating or servicing this unit WARNING Risk of arc flash and electric shock hazard Disconnect all local and remote electric power supplies and wear appropriate personal protective equipment per NFPA 70E before working within the electric control enclosure or the fan motor connection box es Failure to comply can cause serious injury or death This unit contains lethal voltage The line side of the unit disconnect
65. luding Liebert Lee Temp receiver if used and the interconnecting piping Tables 10 11 and 12 provide the approximate charge required for the condensers and the interconnecting piping Consult indoor unit manuals for indoor unit charge requirements These values can be used for obtaining adequate refrigerant for the system but should not be used for final charging NOTE Due to the much smaller coil volume the performance especially subcooling of a Liebert MC condenser is quite sensitive to the amount of refrigerant charge Ensure that an accurate amount of refrigerant charge is added Table 10 Refrigerant required R 407C approximate Single Circuit Ib circuit kg circuit Dual Circuit Ib circuit kg circuit Condenser Condensers without Condensers with Condensers without Condensers with Models Liebert Lee Temp Liebert Lee Temp Liebert Lee Temp Liebert Lee Temp Approximate R 407C Refrigerant Needed MCS028 2 2 1 0 21 0 9 5 N A N A MCM040 3 0 1 4 21 8 9 9 N A N A MCMO080 7 5 3 4 44 5 20 2 3 0 1 4 21 8 9 9 MCM120 N A N A N A N A MCM160 N A N A 7 5 3 4 44 5 20 2 MCL055 5 0 2 3 25 9 11 7 N A N A MCL110 10 5 4 8 52 1 23 7 5 1 2 3 26 0 11 8 MCL165 18 3 8 3 84 8 38 5 N A N A MCL220 27 0 12 3 108 9 49 4 12 2 5 6 53 8 24 4 Model MCM120 is available with Liebert DSE receiver a Liebert Lee Temp receiver is not available with the unit Source DPN002411 Rev 3
66. lve Fasten hot gas line to cabinet using flat surface clamps with Downward a Liquid Line isolators field supplied Leaving From Condenser See Detail A A Liquid Line Note Inverted traps in refrigerant lines are internal to GENERAL ARRANGEMENT the condenser and field installation is not needed Piping Assembly Piping Assembly R 410A 1 and 2 Fan MCM R 410A 2 and 3 Fan MCL e E 1 Fan MCL Piping Assembly iping Assembly Piping Assembly NOTE 1 The following materials are supplied by liebert for each circuit shipped loose with condenser for field installation insulated Libert Lee Temp storage tank with sight glasses head pressure control valve check valve rotalock valve and pressure relief valve All other piping to be supplied and installed by others 2 Consult factory for proper line sizing for runs longer than 150ft 45 7m equivalent length ns 67 Table 7 Condenser piping connection sizes single circuit condensers with Liebert Lee Temp Condenser Connections OD In Liebert Lee Temp Connections Liquid Line Hot Gas Tee to Lee Temp Valve Receiver Out Model Hot Gas Liquid IDS In ODS In IDS In MCS028 718 5 8 718 5 8 5 8 MCM040 718 5 8 7 8 5 8 5 8 MCMO080 1 1 8 718 1 1 8 718 1 1 8 MCLO055 1 1 8 7 8 1 1 8 718 718 MCL110 1 3 8 1 1 8 1 3 8 1 1 8 1 1 8 MCL165 1 3 8 1 1 8 1 3 8 1 1 8 1 1 8 MCL220 1 5 8 1 3 8 1 5 8 1 3 8 1 3 8 Source DPN002167 Rev 2 Lie
67. mestic Packaging Export Packaging Condenser Packaged Dimensions Packaged Dimensions Number Net Weight Weight LxWxH Volume Weight LxWxH Volume Model of Fans Ib kg Ib kg in cm ft m Ib kg in cm ft m 76x36x63 77x37x64 MCS028 1 154 70 335 152 493x91x160 100 2 8 455 206 196x94x163 108 3 0 76x36x63 77x37x64 MCM040 1 231 105 410 186 493x91x180 100 2 8 535 243 196x94x163 108 3 0 136x36x63 137x37x64 MCMO80 2 441 200 750 340 345x91x160 179 5 0 945 429 a4gx94x163 188 5 3 196x36x63 197x37x64 MCM120 3 672 305 1110 503 498x914x160 257 7 3 1380 626 443 66x142 270 7 7 256x36x63 257x37x64 MCM160 4 860 390 1425 646 soxo1x160 336 9 5 1770 803 c o aea 352 10 76x36x63 77x37x64 MCL055 1 344 156 525 238 493x91x160 100 2 8 645 293 196x94x163 106 3 0 136x36x63 137x37x64 MCL110 2 602 273 910 413 345x91x160 179 6 0 1110 503 348x94x163 188 5 3 196x36x63 197x37x64 MCL165 3 891 404 1330 603 49g 91x160 257 7 3 1600 726 413x66x142 270 7 7 256x36x63 257x37x64 MCL220 4 1186 538 1755 796 gs9 91x160 336 9 5 2095 950 e eo 352 10 Net and packaged weights will increase with factory options legs taller than 18 coated coils and seismic options Field installed receivers also add to net weights Consult factory for addit
68. nd remote electrical power supplies to the unit wait 10 minutes and verify with a voltmeter that the power is Off and that all fan blades have stopped rotating before working on or near the fans General Procedures NOTE When ordering replacement parts for equipment it is necessary to specify unit model number serial number and voltage Please record those numbers in the spaces below Model Number Serial Number Voltage Phase Frequency Periodic attention is necessary for continued satisfactory operation of your unit Restricted air flow through the condenser coil reduced airflow from non functioning fans and low refrigerant system charge levels will reduce the operating efficiency of the unit and can result in high condensing temperatures and loss of cooling In winter do not permit snow to accumulate around the sides or underneath the condenser coil Monthly and semi annual inspections and maintenance are recommended for proper system operation Use copies of 9 4 3 Maintenance Inspection Checklist for each of these inspections If performance or operation problem are detected at anytime refer to 8 2 Premium Efficiency Condenser Alarm Codes for required action Condenser Cleaning Keeping the outdoor condenser coils clean is an important factor in maintaining peak efficiency reliability and long life of the equipment The unit will operate more efficiently with frequent cleanings Delaying cleaning until heavy
69. ndenser unit TB74 4 is common TB74 5 is normally open and TB74 6 is normally closed 1 Amp 24VAC is the maximum load Use field supplied Class 1 wiring Indoor Unit Interlock and SPD Alarm Terminals a Onany call for compressor operation normally open contact is closed across Terminals 70 and 71 for Circuit 1 and normally open contact is closed across Terminals 70 and 230 for Circuit 2 from indoor room unit b During SPD alarm normally open contact is closed across Terminals 12 and 13 SPD is an optional device CANbus Shield Terminal Terminal for field shield connection of the CANbus field supplied cables The shield of CANbus field supplied cables must not be connected to ground at the condenser Primary Low Voltage Entrance One 7 8 22 2mm diameter knockout that is free for customer low voltage wiring 23 Liebert MC Electrical Connections Figure 17 Field configurations and setting adjustments Premium Efficiency Control INDOOR UNIT WITH SINGLE MC SERIES CONDENSER END OFLINE DEVICE ADDRESS JUMPER 5B DIP SWITCH 5C ON INDOOR UNIT T50 LIEBERT y WrHicoM res CAMBUSCABLE mo ye Y mm INDOOR UNIT WITH DUAL MC SERIES CONDENSERS TESQ LIEBERT M on cw M Umm CIRCUIT 2 CANbus CABLE INDOOR UNIT Teso LIEBERT on WITH iCOM TB49 CANbus CABLE p49 Te J J6 monon INDOOR UNIT WITH DUAL MC SERIES CONDENSERS AND ADDITIONAL OUTDOOR CANbus
70. ng 10 0 TROUBLESHOOTING Table 19 Troubleshooting Symptom Condenser will not start Low discharge pressure Possible Cause No power to condenser Check or Remedy Check voltage at input terminal block Circuit breaker or fuse for low voltage transformer in condenser is tripped Locate problem in condenser electrical panel and repair No low voltage signal to from indoor unit Faulty head pressure control valve or condenser control board PEC BEC Locate open circuit and repair Replace if defective High discharge pressure Dirty condenser fins Clean coil Condenser fans not operating Check for low voltage signal from indoor unit Check fan motors and fuses High refrigerant charge Check refrigerant charge SPD green and red LEDs are extinguished No voltage or improper phasing exists at condenser Check voltage at input terminal block Electrical connections to SPD are faulty Condenser disconnect is turned Off Locate connection problem and repair Recheck lights with disconnect switch in the On position SPD red LED is illuminated A surge exceeding the rating of the SPD has occurred Replace SPD and inspect other components for damage and replace them if necessary Control Board LEDs do not light Connection to P24 is loose or disconnected Check the connection to P24 to verify that is connected securely Check th
71. oard using pressure transducer signals from the refrigerant circuit and factory programming to control the refrigerant head pressure The premium control board uses inputs from the indoor unit condenser refrigerant pressures and temperatures and ambient temperatures to modulate the EC fan motor speed from 0 to 100 RPM maintaining refrigerant head pressure setpoints The control board EC fan s and transducer s are factory wired Dual refrigeration circuit condensers adjust fans of each circuit independently to match each circuit s head pressure conditions Multiple fan single refrigeration circuit condensers adjust all fans to the same RPM to maintain head pressure The control system provides refrigerant head pressure control for outdoor ambient temperatures as low as 30 F 35 C provided that the total design range from minimum to maximum is 125 F 70 C or less Liebert Lee Temp kits are required only when the design temperature ranges exceed 125 F 70 C for standard match ups and 115 F 65 C for Liebert Quiet Line match ups Liebert MC 4 Introduction 1 1 2 Liebert Lee Temp Refrigerant Control 1 2 1 2 1 1 3 The Liebert Lee Temp head pressure control system utilizes head pressure control valve s extra refrigerant and insulated refrigerant receiver s with heater pads to assist system starting and to maintain proper operating head pressures in outdoor ambient temperatures below the rating point o
72. obtain Calculated Subcooling Line 5 120 3 F 49 0 C Line 6 113 2 F 45 1 C 8 Calculated Subcooling 7 1 F or 7 F 3 9 C or 4 C Elevation Correction Subtract Line 3 Correction for Condenser Elevation above Evaporator from Line 8 Calculated Subcooling to obtain Corrected Subcooling Line 8 TF 3 9 C Line 3 4 F 2 2 C 9 Corrected Subcooling 3 F 1 7 C Verification Against MC Condenser Subtract Line 7 MC Condenser Subcooling Reading from Line 9 Corrected Subcooling to obtain Difference Line 9 3 F 1 7 C Line 7 5 F 2 8 C 10 Difference 2 F 1 1 C If Line 10 Difference value is less than 3 F 41 7 C NO charge adjustment is needed If Line 10 Difference value is less than 3 F 1 7 C add additional charge If Line 10 Difference value is greater than 3 F 1 7 C the system is overcharged and some of the charge must be removed Table 14 Difference in subcooling measurements Indoor minus outdoor Liebert MC Elevation Above Subcooling Elevation Correction F C Evaporator ft m 80 24 60 18 40 12 20 6 R 407C 10 5 5 7 3 8 4 2 2 1 0 6 Refrigerant R 410A 6 3 3 4 2 2 2 1 1 0 0 0 Assumes liquid line is sized for no more than 2 F 1 1 C pressure drop DPNO002411 Rev 3 37 Liebert MC Piping 9 As head pressure builds the variable fan speed controlled condenser fan begins
73. oduct Description and Features The Liebert MC condenser is a low profile direct drive propeller fan type air cooled unit suitable for mounting outdoors It provides heat rejection for either one or two separate refrigeration circuits matches the heat rejection capacity corresponding with the outdoor ambient temperature and with each corresponding compressor heat rejection requirements Constructed with an aluminum cabinet galvanized steel frame and microchannel coil the unit is quiet and corrosion resistant The condenser is quickly and easily installed because all internal wiring is completed at the factory with only electrical connections to be made at the job site All electrical connections and controls are enclosed in an integral weatherproof section of the condenser Figure 1 Two fan Liebert MC condenser 1 1 1 1 1 Control Fan Types Premium Efficiency Control EC Fan Premium Efficiency Controls and EC fans are matched to provide superior system energy efficiency The premium control board allows CANbus communication with the indoor unit s Liebert iCOM control This communication feature provides compressor run signals condenser operating mode changes condenser alarm monitoring simplified system charging procedures and outdoor ambient temperature monitoring The EC fan is an integral assembly of an electronically commutated motor quiet fan blade assembly and finger hail guard The fans are controlled by the premium control b
74. on A casei AAA massed So eels Re RU ane Oe TA Re ee Ee qt eus 58 9 4 3 Maintenance Inspection Checklist 0 00 0 cence nnn 59 TROUBLESHOOTING 57 303 xA A EA AA as 60 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 FIGURES Two fan Liebert MC condenser 0 cee cee teen e nett ene ens Typical footprint dimensions all units 0 eee ene e nes Condenser planning dimensional data MCS028 0 ccc teen eens Condenser planning dimensions MCM040 MCM080 MCM160 with without Liebert TOO ODO 122 ei od eee eie E il ota Condenser planning dimensions MCM120 0 0 0 ccc eee eens Condenser planning dimensions MCL055 MCL110 MCL165 and MCL220 Cabinet and anchor dimensions MCL055 MCL110 MCL165 and MCL220 with Liebert Lee Temp receiver oo hs Equipment recommended for handling a Liebert condenser 0 000 ce eee eee ene Forklift position with one fan or two fan condensers eese Removing protective material 00 s Attaching legs to one fan or two fan condensers l l cece eee eee een eens Securing slings to condensers for lifting off skid 6
75. ontrol Board Replacement 9 4 1 Replacement Preparation 1 Verify that the following jumpers are installed on the new board see Figure 33 Jumper at J4 and J6 on Pins 2 and 3 Jumper on J2 Jumper on J5 on Pins 1 and 2 2 Locate the latest revision of the HMI parameters label 303847P1 included with new control board Liebert MC 56 System Maintenance Figure 33 Jumper locations on Control Board J4 J6 r T eS Ss RS485 r nA C RS485 Service e ors Communication Terminal JP toFans i 1 1 L 1P 1P8 i meoo 558 REE eon meee j l in JH p Communication 1 M a e from D E Spare Digital indoor unit CANbus j a Used Outputs Not Communication from indoor unit Fan 4 Fan 3 Fan Contactor Fan 2 Output Service 3009 uva 010 0102 COVI8ZA LNLOMOW CPU Board Human Machine Interface HMI e Circuit 1 Fan 1 Pressure Bi E Circuit 1 Input 6 e nputs l i a Y Circuit 2 t F T ORUM Lom Indicator Lights 4 E Ambient 2 z ON Signal J i Call for mbient Present EU GEN EC Coding Temperature a A 1 Ethernet and CANbus addressing
76. or Subcooling Calculation Worksheet Circuit 1 Circuit 2 Refrigerant Type Ambient Temperature Condenser Elevation Condenser Elevation Temperature Correction Liquid Line Pressure Liquid Pressure converted to Temperature Measured Liquid Line Temperature DX oi cO E NDS x MC Condenser Subcooling Reading Menu ID F50 for Circuit 1 or Menu ID F51 for Circuit 2 Subtract Line 6 Measured Line Temperature from Line 5 Liquid Pressure converted to Temperature to obtain Calculated Subcooling Circuit 1 Circuit 2 Line 5 Line 6 8 Calculated Subcooling Elevation Correction Subtract Line 3 Correction for Condenser Elevation above Evaporator from Line 8 Calculated Subcooling to obtain Corrected Subcooling Circuit 1 Circuit 2 Line 8 Line 3 9 Corrected Subcooling Verification Against MC Condenser Subtract Line 7 MC Condenser Subcooling Reading from Line 9 Corrected Subcooling to obtain Difference Circuit 1 Circuit 2 Line 9 Line 7 10 Difference If Line 10 Difference value is less than 3 F NO charge adjustment is needed If Line 10 Difference value is greater than 3 F add additional charge If Line 10 Difference value is greater than 3 F remove charge 39 Liebert MC Checklist for Completed Installation 6 0 CHECKLIST FOR COMPLETED INSTALLATION 6 1 Moving and Placing Equipment Mis FEMA 3 Unpack and check recei
77. rap iquid Line Liquid Line To Condenser external to the unit From Condenser GENERAL ARRANGEMENT R407C 2 and 4 Fan Piping Assembly R410A 2 Fan Leaving Entering Hot Piping Assembl Liquid Line ibis R410A 4 Fan p C View Gas Line Piping Assembly Liquid Line Position elbow to From Condenser direct relief valve Field Piping downward Note 1 The following materials are supplied by Emerson for each circuit shipped loose with condenser for field installation insulated Liebert Lee Temp storage tank with sight glasses head pressure control valve check valve rotalock valve and pressure relief valve All other piping to be supplied and installed by others 2 Consult factory for proper line sizing for runs longer than 150ft 45 7m equivalent length DPN002426 REV 3 Table 9 Piping dimensions dual circuit condensers with Liebert Lee Temp Condenser Connections ODS in Liebert Lee Temp Connections Liquid Line Hot Gas Tee to Lee Temp Valve Receiver Out Model Hot Gas Liquid IDS in ODS In IDS in MCMO080 7 8 5 8 7 8 5 8 5 8 MCL110 1 1 8 7 8 1 1 8 7 8 7 8 MCM160 1 1 8 7 8 1 1 8 7 8 1 1 8 MCL220 1 3 8 1 1 8 1 3 8 1 1 8 1 1 8 Source DPN002426 Rev 3 Liebert MC 32 Piping 5 3 Refrigerant Planning Values Planning for the refrigerant requirements of the completed system is the total of the charges from Indoor Unit Condenser inc
78. rding to the specifications on the unit nameplate s per the instructions in this manual and according to the applicable national state and local code requirements Use copper conductors only Make sure all electrical connections are tight Unit specific wiring diagrams are provided on each unit NOTE The Liebert MC Condenser is designed to operate with Wye connected power It will not operate properly with Delta connected power Refer to 4 1 1 Wye vs Delta Connection Power Supply Condenser rated voltage should be verified with available power supply before installation Refer to the unit s electrical schematic and serial tag for specific electrical requirements Line voltage electrical service is required for all condensers at the location of the condenser The voltage supply to the condenser may not be the same voltage supply as required by the indoor unit Consider using UPS equipment on both data center cooling units and Liebert MC condensers to maintain uninterrupted cooling capability Refer to the unit s serial tag for specific condenser electrical requirements A unit disconnect is standard However a site disconnect may be required per local code to isolate the unit for maintenance Route the supply power to the site disconnect switch and then to the unit Route the conduit to the knockout provided in the bottom right end of the electrical control enclosure Connect the earth ground wire lead to the marked earth ground conn
79. rom the unit First this requires disconnecting the power supply before working on the unit and then opening the cleaning window s on the side of the unit by loosing the mounting screws Then insert a spray nozzle on the end of a suitable extension and apply the water cleaning solution working back and forth across the coil face The solution will push the dirt and debris out the bottom of the coil If you are using a cleaner along with the spraying process follow recommended manufacturer instructions and be sure to rinse the coil thoroughly Any residue left on the coil can act as a magnet to dirt Reinstall the cleaning window s and reconnect the power supply to the condenser Spraying the coil from the outside repeatedly can push a majority of the dirt to the inner section of the fins and continue to restrict air flow Keep in mind you may not have the luxury of shutting the unit s down for an extended time A scheduled shutdown with the operator may be in order NOTICE Risk of using damaging cleaning agents including non base paint solvents Can cause equipment damage and damage to property and loss of refrigerant charge Using acid based or sodium hydroxide based cleaners can damage the Liebert MC condenser coil and cause a loss of charge This could cause equipment damage as well as damage to the surrounding structure NOTE Clean the EC fan with water only when temperatures are greater than 50 F 10 C Make sure that no water
80. rotating The fan will run at full speed when sufficient head pressure is developed Table 15 Liquid pressure and temperature chart Pressure R 407C R 410A R 22 PSIG Bar F C F C F C 170 11 7 81 5 27 5 59 8 15 4 90 6 32 6 180 12 4 85 1 29 5 63 1 17 3 94 3 34 6 190 13 1 88 6 31 5 66 3 19 1 97 9 36 6 200 13 8 92 0 33 3 69 5 20 8 101 4 38 6 210 14 5 95 2 35 1 72 5 22 5 104 7 40 4 220 15 2 98 3 36 8 75 4 24 1 108 0 42 2 230 15 9 101 4 38 5 78 2 25 7 111 1 44 0 240 16 6 104 3 40 2 80 9 27 2 114 2 45 7 250 17 2 107 2 41 8 83 6 28 7 117 1 47 3 260 17 9 109 9 43 3 86 2 30 1 120 0 48 9 270 18 6 112 6 44 8 88 7 31 5 122 8 50 4 280 19 3 115 3 46 3 91 1 32 8 125 5 52 0 290 20 0 117 8 47 7 93 5 34 2 128 2 53 4 300 20 7 120 3 49 1 95 8 35 5 130 8 54 9 310 21 4 122 8 50 4 98 1 36 7 133 3 56 3 320 22 1 125 2 51 8 100 3 38 0 135 8 57 7 330 22 8 127 5 53 1 102 5 39 2 138 2 59 0 340 23 4 129 8 54 3 104 6 40 3 140 6 60 3 350 24 1 132 1 55 6 106 7 41 5 142 9 61 6 360 24 8 134 3 56 8 108 7 42 6 145 2 62 9 370 25 5 136 4 58 0 110 7 43 7 147 4 64 1 380 26 2 138 6 59 2 112 7 44 8 149 6 65 4 390 26 9 140 6 60 3 114 5 45 9 151 8 66 5 400 27 6 142 7 61 5 116 4 46 9 153 9 67 7 500 34 5 161 3 71 8 133 5 56 4 173 1 78 4 600 41 4 177 4 80 8 148 1 64 5 189 5 87 5 Values are for saturated liquid DPNO002411 Rev 3 Liebert MC 38 Piping Evaporat
81. sure i BE le 1 X Circuit 1 rel ASN y e ES Inputs ile 1 i Pi 3 Circuit 2 Circuit 2 Indicator Lights 1 i di ee eq ON Signal E Call for Ambient Present COTOS Cooli AP ORCL EIER DOV OD B ooling Temperature reni t S Ethernet and CANbus addressing Inputs Al r78 d I and signal indication l coje Le aif Circuit T 3 Indicator Lights ON Signal Present X 2 24VAC ren r SUN e Circuit 2 el Remote SUM Mother Shutdown Eerssojggm Board E DER AA AA VER A02 la i C E i 2010 08 10 1 S Alarm amp Shutdown Eam AAC EAN ircui roun ircuits 1 LN Fuses are rated to 3A 250V E a 301471 Pg 2 Rev 3 Liebert MC 42 Control Operation Figure 24 The Premium Efficiency Controls are factory configured for refrigerant type and whether the condenser was sold with a Liebert Lee Temp system No field configuration is necessary for proper and efficient condenser operation 8 1 1 Initial Screen Upon Power On The controller displays the initial screen after it is powered On The initial screen shows the first item of analog signals menu The F00 and value of condenser pressure 1 are displayed alternatively and F00 means the item ID of condenser pressure 1 The display sequence is shown Figure 25 In the figure 16 1 is an example and the value is dependent on the sampling result Figure 25 Initial controller display og XUNG
82. switch remains energized when the unit disconnect switch is in the Off position Use a voltmeter to verify that the line side input electric power to the unit disconnect switch is off before working on any electrical components or connections WARNING Risk of high speed rotating fan blades Can cause serious personal injury or death Fan blades can automatically start rotating without warning at any time during a cooling cycle or after power is restored after a power failure Disconnect all local and remote electric power supplies and verify with a voltmeter that the power is off and that the fan blades have stopped rotating before working within the cabinet or servicing fan motors WARNING Risk of electric shock Can cause injury or death The variable speed control may contain a stored electrical charge Disconnect all local and remote electrical power supplies and wait 10 minutes before working within condenser main electrical enclosure or fan electrical enclosure WARNING Risk of heavy condenser falling or tipping over Can cause property damage serious injury or death Confirm that all components of the lifting system are rated for the weight of the condenser by an OSHA Certified rating organization before attempting to lift and or move the condenser See 2 2 Dimensions and Weights for the condenser weights CAUTION Risk of hot surfaces Can cause injury Fan motors transformers piping and other components may become
83. t electric power to the unit disconnect switch is off before working on any electrical components or connections Turn Off the disconnect switch on the enclosure cover Open the control enclosure cover Manually turn On the disconnect switch Power is On and a shock hazard exists with exposure to hazardous voltage components If the board can still be powered up and has a display record the parameter settings To obtain parameters go to the C menu and press the Up or Down button to read and record the values for C03 09 and C27 Record all of the DIP switch positions for the CANbus dip switch package Retain these for setting up the new board Record positions of the jumpers for J2 J4 J5 and J6 on control board in unit Retain these for set up of new board Disconnect power from the Liebert MC Condenser unit by turning Off the main disconnect switch Use a voltmeter to check the unit and ensure that voltage is no longer present in the unit Remove the plugs and field installed wires from the old board Note the polarity for the CANbus wiring going to P49 and P50 if present Mark wires P49 1 P49 3 etc if they are not already marked as such board Install the new control board using the fasteners removed in Step 11 Reattach the plugs Reference the hot stamps on the wire harnesses that correspond to the correct plug on the board Verify that the plugs are installed properly Change the CANbus DIP switch positions so they match
84. t gas and make its piping connection last Follow all proper brazing practices including a dry nitrogen purge to maintain system cleanliness The condenser connection pipes must be wrapped with a wet cloth to keep the pressure and temperature sensors cool during any brazing Liebert MC 28 Piping Figure 19 Liebert MC Condenser piping Single circuit units Note Inverted traps in refrigerant lines are internal to the Liebert MC condenser and field installation is not needed Leaving Liquid Line Horizontal CBD Vertical Hot Gas Line Optional fusible plug service kit to be brazed into the liquid line s in either the vertical or horizontal position where required Vertical position is preferred horizontal position is optional Table 6 Liebert MC Condenser piping sizes single circuit units Number Connection Sizes OD in mm Model No of Fans Hot Gas Line Liquid Line MCS028 1 718 5 8 MCM040 1 718 5 8 MCMO080 2 1 1 8 7 8 MCM120 3 1 3 8 718 MCLO055 1 1 1 8 718 MCL 110 2 1 3 8 1 1 8 MCL 165 3 1 3 8 1 1 8 MCL 220 4 1 5 8 1 3 8 Field Piping DPNO02166 Rev 1 29 Liebert MC Piping Figure 20 Condenser piping for single circuit condensers with Liebert Lee Temp Metal d Isolator Hot Gas Line Detail A A To Condenser Field Piping Entering Hot Gas Line Position Elbow to Direct Relief Va
85. tilizing a Pressure Temperature Guide or Table 15 The difference between this converted temperature and the actual temperature will determine the system s subcooling For R 407C make sure to use the saturated liquid temperature to calculate subcooling Table 13 Target subcooling for ambient outdoor temperature Ambient Temp Subcooling F C F C 0 17 8 22 12 0 10 12 2 22 12 0 20 6 7 22 12 0 30 1 1 22 12 0 40 4 4 22 12 0 50 10 0 21 11 7 60 15 6 19 10 8 70 21 1 17 9 3 80 26 7 13 7 2 90 32 2 9 5 0 95 35 0 7 3 9 100 37 8 5 2 9 105 40 6 3 1 8 110 43 3 1 0 7 125 51 7 0 DPNO002411 Rev 3 8 Verify the subcooling calculated from measured values at the evaporator against the subcooling reading of the Liebert MC control menu ID F50 amp F51 If the subcooling calculated with gauges differs from the Liebert MC subcooling by more than 3 F 1 7 C then adjust the charge amount to achieve the target subcooling per Table 13 based the Liebert MC control subcooling Failure to check measured subcooling with refrigerant gauges vs Liebert MC subcooling may result in an overcharged system See Note below and Table 14 for corrections to Liebert MC subcooling that may be required based on condenser elevation above the indoor evaporator 3 4 NOTE The evaporator subcooling will be greater than the condenser subcooling when
86. too F Rock ambi high or cause 3 check ambient temperature 1 4 EC Fan Hall failure EC Fan is damaged Replace EC Fan EC Fan IGBT failure EC Fan is damaged Replace EC Fan 1 4 EC Fan line fault Power supply abnormal Check power supply 04 1 4 05 06 07 1 4 EC Fan motor locked Motor is locked Check if EC Fan is locked 1 EC Fan is locked 2 EC Fan is damaged For cause 1 check if EC Fan is locked 1 4 08 EC Fan motor thermal overload P For cause 2 replace EC Fan 3 Ambient temperature is too hi h For cause 3 check ambient 9 temperature 1 4 09 EC Fan phase failure alarm Phase failure Check power supply EC Fan specific uncategorized alarm 1 4 10 detected P q Re boot condenser if fans not Internal EC Fan issue running If alarm persists and fans 1 4 11 EC Fan specific uncategorized not running replace fan warning detected 1 EC Fan is locked deas 1 check if EC Fan is EC Fan electronics high temperature 2 EC Fan is damaged 1t o condition 3 Ambient temperature is too ES cause 2 mpa ae de high or cause 3 check ambien temperature 1 EC Fan input power supply 1 4 13 EC Fan high link voltage high voltage For cause 1 measure power 2 EC Fan is damaged supply voltage and check if the 1 EC Fan input power supply low Voltage is normal 1 4 14 EC Fan low link voltage voltage For cause 2 replace EC Fan 2 EC
87. ture use or dispose of the material appropriately SAFETY INFORMATION A A A WARNING Risk of improper handling Can cause equipment damage injury or death Read all of the following instructions before attempting to move lift remove packaging from or preparing unit for installation WARNING Risk of heavy condenser falling or tipping over Can cause property damage serious injury or death Confirm that all components of the lifting system are rated for the weight of the condenser by an OSHA Certified rating organization before attempting to lift and or move the condenser See 2 2 Dimensions and Weights for the condenser weights CAUTION Risk of sharp edges splinters and exposed fasteners 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 NOTICE Risk of overhead interference Can cause unit and or structure damage Refer to the installation plans before moving the unit to verify clearances NOTICE Risk of improper forklift handling Can cause unit damage Keep the forklift tines level and at a height that will fit under the skid NOTICE Risk of improper storage Can cause unit damage Keep unit upright and protected from contact damage Liebert MC 12 Inspection and Installation Figure 8 Equipment recommended for han
88. ucts and services from Emerson Network Power deliver Efficiency Without Compromise 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 2011 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 19536_REV2_02 13 Emerson Network Power The global leader in enabling Business Critical Continuity 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 800 543 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 049971
89. ved material Proper clearance for service access has been maintained around the equipment Equipment is level and mounting fasteners are tight 6 2 Electrical __ 1 Line voltage connected and matches equipment nameplate 2 Power line circuit breakers or fuses have proper ratings for equipment installed 3 Control wiring connections completed between indoor cooling unit and condenser ___4 Allinternal and external high voltage and low voltage wiring connections are tight to the proper torque ratings shown on the components 5 Confirm that unit is properly grounded to an earth ground PT Electrical service conforms to national and local codes 7 Monitoring wiring connections completed when equipped to indoor cooling unit or external monitoring panel 8 Check to confirm Premium EC Fan Condenser is not connected to Delta Power Supply __ 9 Check that the CANbus wiring CANbus END of Line jumper position and the CANbus Device Address DIP Switch setting is correct according to the application at the job site 10 If Terminals 70 71 and 230 are used verify they are properly wired with special attention paid to systems that use two condensers for one indoor unit 6 3 Piping 1 Piping is completed to corresponding indoor cooling unit refrigeration circuit ___ 2 Piping is leak checked evacuated and charged with specified refrigerant ___ 3 Additional refrigerant oil added if required per circuit _

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