Carrier 50AH024-096 Air Conditioner User Manual
Contents
1. Aiddng episino WSO QN3931 THREADED ROD UNIT 50AH OPERATING WEIGHT Ib Base Unit Evaporator Condenser Sections SHIPPING WEIGHT Ib REFRIGERANT TYPE Operating Charge Ib oz t COMPRESSOR TYPE Quantity Model Cil oz HPS Setting psig Cutout Reset LPS Setting psig Cutout Reset CONDENSATE DRAIN CONNECTION Size in Type CONDENSER COIL Size L x H in Number of Rows Fins in CONDENSER FAN Nominal Cfm Blower Size in Motor Hp Rpm Standard Motor Upgrade 1 Motor Upgrade 2 Motor EVAPORATOR COIL Size L x H in Number of Rows Fins in EVAPORATOR AIR FAN Nominal Cfm Blower Size in Motor Hp Rpm Standard Motor Upgrade 1 Motor Upgrade 2 Motor Upgrade 3 Motor INDOOR AIR FILTERS Number Size in INTERCONNECTING TUBING SIZE Suction Qty in Liquid Qty in LEGEND HPS High Pressure Switch LPS Low Pressure Switch Shipping weights include base unit plus packaging CENTER OF GRAVITY DIMENSIONS in UNIT 50AH NOTE Fasten threaded rods through holes in end frames as shown Use 4 rods on each side of unit for a total of 8 A CAUTION All panels must be in place when rigging Fig 6 Rigging Details Table 1 Physical Data 022 036 048 903 910 952 399 484 401 489 417 515 1036 1043 1085 R 410A 4 5 4 5 8 8 Scroll 1 ZP20K5E 1 ZP31K5E 1 ZP38K5E 25 25 42 650 7 Manual Reset 7547 100 7 7 g2. Move and store unit in horizontal position Provide space around unit for service filter access ductwork and overhead clearance as indicated in Fig 2 5 Using suitable hydraulic lift source raise unit up to meet bottom of the 8 threaded rods suspended from ceiling 12 rods for units with air side economizer Center unit so that the 8 or 12 threaded rods can be easily inserted into the factory drilled holes at each end Refer to Fig 6 for rigging details Apply washers and locknuts on ends of each of the 8 or 12 rods Tighten locknuts sufficiently so that unit weight is support ed entirely by the 8 or 12 rods Level unit within the space by adjusting locknuts IMPORTANT Unit must be level to operate properly NOTE For split systems 8 or 12 suspension rods are required 4 for each section and 4 for economizer if required Refer to Splitting Systems section below Step 5 Make Condensate Piping Connec tions One 7 s in OD pipe thread condensate drain con nection is provided for the evaporator section NOTE If components are to be split the maximum length of refrigerant tubing to be used is 50 equivalent ft assuming components will be installed in same horizontal plane If components are not to be installed in same horizontal plane contact your Carrier representative for more information For additional piping information refer to Carrier System Design Manual Part 3 Step 6 Install Ductwork Use flex
3. 8 4 31VSN3QNOO SS320V 94 SL 8L u3Mo18 4 SS390V 193NNO9 SS320v HOLON SS390v xoa 403573 55300 71109 SS320vV HOSS3HdWOO2 vegl uiv 9 9 Pout or ha L o loo OWL 12 et SS300V uaria SNOLLO3NNOO WOIHLOATS M3IA OIH HHIAOSI JONVHV312 JAYS NI 9 3jONVHV3 lO 3OIAH3S NI 9c whe Vv 1viad WLI Sd 8 dAL 9NIONVH 8 39NVuV319 NOLLO3S NOILO3S QNOD JONVHV3d IO 39IAH3S NI 9 B LE i eoz cvi oe csi ovi ozi 960 eet Sci oci zo ovi Sci Sci zzo ai H3NHOO 40 LHDIAM NOILOQSTH ISIG LHOIM 9NIIVHJdO 8L 1 2 pejeisuj A1019e 4 YUM SHUN 960 270HVOS suoisueuig HUN ld 1NOMJ 8 2 01 home SSd20v 90412 DLE AHO SS300V eu ssgoov 2 d 7 ssa00v 7 O1ON NNhLdH 1031 7 7 IA 9029 uva 44571 8 2 JLYSNIANO9 SS320v ssdoov ssaoov WOSS3HdWOO 91 919 SNOILO3NNOO LALE gE dol Vv liv 13a Sd ZL dAL GO SNIONVH 8 39NVHV3TO NOLLOAS NOILOAS 9L SL L 8 2 9UL9 S 00Z S 1 Jeziuouo23 Z SOYOUI Ul suoisueuli SALON uid
4. 0D Copper Tubes Aluminum Fins 40 x 30 40 x 30 90 x 30 4 14 4 14 2 12 Centrifugal Belt Drive 1700 2000 2500 15 x15 15x15 15x15 0 33 1725 0 33 1725 0 33 1725 s 0 50 1725 0 75 1725 Copper Tubes Aluminum Fins 32 x 16 32x16 32 x 26 3 12 3 12 3 14 Centrifugal Belt Drive 800 1200 1600 12x9 12x9 12x9 0 25 1725 0 33 1725 0 33 1725 0 33 1725 0 50 1725 0 50 1725 0 50 1725 0 75 1725 0 75 1725 1 00 1725 1 00 1725 Factory Supplied Disposable Type 2 18x24 x1 2 18x24 x1 2 18 X 24x 1 1 5 g 1 5 g 1 7 8 1 3 8 1 3 8 1 3 g NOTE If components are to be split the maximum length of refrigerant tubing to be used is 50 equivalent ft assuming components will be installed in same horizontal plane If components are not to be installed in same horizontal plane contact your Carrier representative for more information For additional piping information refer to Carrier System tlf components are to be split additional refrigerant will be needed Design Manual Part 3 Table 1 Physical Data cont UNIT 50AH 6 O 072 096 OPERATING WEIGHT Ib Base Unit 960 1214 1283 Evaporator Condenser Sections 421 519 554 634 556 701 SHIPPING WEIGHT Ib 1093 1647 1716 REFRIGERANT TYPE R 410A Operating Charge Ib oz t 8 8 6 6 6 6 COMPRESSOR TYPE Scroll Quantity Model 1 ZPKP51K5E 2 ZP31K5E 2 ZP38K5E Oil oz 42 25 42 HPS Setting psig Cutout 650 7 Reset
5. 90 058 048 1600 566 022 652 028 734 0 35 813 0 42 888 049 960 0 56 1400 537 017 632 023 722 029 806 0 35 886 042 962 049 2200 640 715 052 76 060 2000 588 032 670 040 747 048 819 056 889 064 1750 552 024 642 03 725 o38 803 046 878 053 950 061 2700 461 036 543 047 619 060 689 075 072 2400 449 029 537 oso 616 0533 2100 435 024 529 034 611 047 683 o6 3600 555 0 74 618 0 87 680 101 096 3200 514 06 584 oso 652 707 094 769 110 2800 448 037 552 051 626 oe4 695 0 79 759 oos ete 112 LEGEND NOTES 1 Refer to Table 1 for evaporator fan motor and drive information Bhp Brake Horsepower 2 Upgrade 1 Static Motor is required for boldface values 3 Upgrade 2 Static Motor is required for shaded values 16 Table 4 Condenser Fan Performance EXTERNAL STATIC PRESSURE in wg LEGEND Bhp Brake Horsepower START UP Unit Preparation Make sure unit has been installed in accordance with installation instructions and applicable codes Compressor Mounting Compressors are internally mounted on rubb
6. C Air Side Economizer with Controls D E Hot Gas Bypass and Hot Gas Reheatt Hot Gas Bypass and Air Side Economizert F Hot Gas Bypass Air Side Economizer and Hot Gas Reheatt Hot Gas Reheat and Air Side Economizert Cabinet Type Standard S Splittable Condenser Configuration Standard Motor with Standard Drive Standard Motor with Standard Drive Flooded Condenser Standard Motor with Alternate 1 Drive Upgrade 1 Motor with Alternate 1 Drive Upgrade 1 Motor with Alternate 2 Drive Upgrade 1 Motor with Alternate 3 Drive Upgrade 2 Motor with Alternate1 Drive Upgrade 2 Motor with Alternate 2 Drive Upgrade 2 Motor with Alternate 3 Drive J Standard Motor with Alternate 1 Drive Flooded Condenser K Upgrade 1 Motor with Alternate 1 Drive Flooded Condenser L Upgrade 1 Motor with Alternate 2 Drive Flooded Condenser M Upgrade 1 Motor with Alternate Drive Flooded Condenser N Upgrade 2 Motor with Alternate1 Drive Flooded Condenser P Upgrade 2 Motor with Alternate 2 Drive Flooded Condenser Upgrade 2 Motor with Alternate 3 Drive Flooded Condenser moony Fig 1 Model Number Nomenclature SHUN pyepueis 090 pZOHVOS suoisueuig Bis UIMH vH ay Aiddng epising YSO QON3531 1H9IH Lr SS300V SS300V u3Mo1ta SS390V SS300v xog dAL SNOLLO3NNOO WOIWLOATS M3IA 9IH L
7. Step 9 Adjust Fan Speed Adjust fan speed to meet jobsite conditions Refer to Tables 3 and 4 to determine fan speed settings See Service section of this document for instructions to adjust fan speed The evaporator and condenser fan motors on all units are belt drive Table 2A Electrical Data Standard Evaporator Motor with Standard Condenser Motor VOLTAGE FAN MOTORS COMPRESSOR Evaporator Condenser POWER SUPPLY T RANGE m 60 Hz G Standard Standard Min Ckt MOCP Deme m m um pm ne E LER 024 35 208 230 1 187 254 16 7 036 208 230 3 187 254 1 10 4 460 3 414 508 5 8 208 230 1 187 254 19 9 048 208 230 3 187 254 1 13 6 460 3 414 508 208 230 1 187 254 26 4 060 208 230 3 187 254 1 16 0 460 3 414 508 208 230 1 187 254 072 208 230 3 187 254 2 460 3 414 508 5 8 208 230 1 187 254 096 208 230 3 187 254 2 460 3 414 508 6 1 LEGEND HACR Heating Air Conditioning and Refrigeration Hp Horsepower FLA Full Load Amps LRA Locked Rotor Amps MOCP Maximum Overcurrent Protection HACR breaker RLA Rated Load Amps Unit has two compressors 79 0 1 3 7 40 73 0 1 3 3 3 25 38 0 1 3 7 7 15 109 0 1 3 1 7 1 7 50 83 1 1 3 1 3 1 3 35 41 0 1 3 0 7 0 7 15 134 1 3 1 7 1 7 65 110 0 1 3 1 3 1 3 1 3 40 52 0 1 3 0 7 1 3 0 7 20 79 0 1 2 2 5 1 4 2 60 73 0 1 2 1 8 1 3 2 40 38 0 1 2 0 9 1 1 6 20 109 0 3 4 3 2 6 5 75 83 1 3 4 2 4 4 8 50 41 0 3 4 1 2 2 4 25
8. 10 Listed Table 2B Electrical Data Upgrade 1 Evaporator Motor with Standard Condenser Motor FAN MOTORS 50AH 60 Hz Upgrade 1 Standard Min Ckt MOCP we ew ma im we ma vn rea ng 024 208 230 1 35 208 230 1 187 254 16 7 79 0 1 2 1 3 1 7 40 036 208 230 3 187 254 1 10 4 73 0 1 2 1 1 3 1 3 25 460 3 414 508 5 8 38 0 1 2 0 1 3 0 7 208 230 1 187 254 19 9 109 0 1 2 2 1 3 1 7 50 048 208 230 3 187 254 1 13 6 83 1 1 2 1 1 3 1 3 35 460 3 414 508 6 1 41 0 1 2 0 1 3 0 7 9 2 15 208 230 1 187 254 26 4 134 0 1 2 1 3 1 7 65 060 208 230 3 187 254 1 16 0 110 0 1 2 1 3 1 3 40 460 3 414 508 7 8 52 0 1 2 1 8 0 7 20 208 230 1 187 254 16 7 79 0 3 4 3 1 60 072 208 230 3 187 254 2 10 4 73 0 3 4 2 40 460 3 414 508 5 8 38 0 3 4 1 1 20 208 230 1 187 254 109 0 1 4 2 1 6 5 75 096 208 230 3 187 254 2 83 1 1 3 2 4 8 50 460 3 414 508 6 1 41 0 1 1 6 1 2 4 25 FAN MOTORS 50AH 60 Hz Upgrade 2 Standard 024 208 230 1 187 254 16 7 79 0 3 4 3 2 1 3 1 7 036 208 230 3 187 254 1 10 4 73 0 3 4 2 4 1 3 1 460 3 414 508 5 8 38 0 3 4 1 2 1 3 0 208 230 1 187 254 19 9 109 0 3 4 3 2 048 208 230 3 187 254 1 13 6 83 1 3 4 2 4 460 3 414 508 6 1 41 0 3 4 1 2 208 230 1 187 254 26 4 134 0 3 4 3 2 060 208 230 3 187 254 1 16 0 110 0 3 4 2 4 460 3 414 508 7 8 52 0 3 4 1 2 208 230 1 187 254 16 7 79 0 072 208 230 3 187 254 2 10 4 460 3 414
9. 2 Remove the 10 size 10 drive screws that hold on the top tie strap 3 Remove the 8 size 3 8 drive bolts that hold on each side angle 4 Control panel access panels are held on with 2 size 10 drive screws for each panel A standard 50AH024 060 unit has one control panel located in the evaporator sec tion A standard 504 H072 or 096 unit has a control panel in both the evaporator and condenser sections 5 Units have resealable fittings Do not cut refrigerant pip ing See Interconnecting Refrigerant Tubing section be low for procedure on installing tubing 6 Install evaporator and condensing sections in desired locations 7 Use sufficient length of refrigerant piping to reconnect piping cut in previous step Refer to Carrier System Design Manual Part 3 for additional piping data 8 Recharge unit with R 410A See Refrigerant Charge sec tion on page 18 for more information After splitting sections additional refrigerant must be added to system to ensure proper refrigerant charge The amount of refrigerant to be added depends on length of tubing added to system and operating temperatures of system Refer to Carrier System Design Manual Chapter 3 Allow unit to operate at least 10 minutes before adjusting refrigerant charge Since standard roomtop unit has negligible line losses split ting the system can increase line loss and decrease system capacity Capacity reduction can be determined by referring to Carrier S
10. 230 3 460 3 208 230 1 208 230 3 460 3 6 1 VOLTAGE RANGE COMPRESSOR V PH 60 Hz 208 230 1 187 254 N A 208 230 3 187 254 1 N A 460 3 414 508 N A 208 230 1 187 254 19 9 208 230 3 187 254 1 13 6 460 3 414 508 208 230 1 187 254 26 4 208 230 3 187 254 1 16 0 460 3 414 508 208 230 1 187 254 16 7 208 230 3 187 254 2 460 3 414 508 208 230 1 187 254 N A 208 230 3 187 254 2 13 6 460 3 414 508 6 1 LEGEND Heating Air Conditioning and Refrigeration Horsepower Full Load Amps Locked Rotor Amps Maximum Overcurrent Protection HACR breaker Rated Load Amps Unit has two compressors Min Ckt WE FAN MOTORS Evaporator Condenser Upgrade 1 Upgrade 1 POWER SUPPLY MOCP Amps N A N A N A N A N A N A N A N A N A N A N A N A N A N A N A N A N A N A N A N A N A N A N A 109 0 1 2 2 5 1 2 2 5 50 83 1 1 2 1 8 1 2 1 35 41 0 1 2 0 9 1 2 0 15 134 0 1 2 5 65 110 0 1 2 8 40 52 0 1 2 9 20 79 0 3 4 65 73 0 3 4 40 38 0 3 4 20 N A N A 83 1 55 41 0 1 25 N A 109 0 134 0 110 0 N A 13 FAN MOTORS Evaporator Condenser Upgrade 2 Upgrade 1 Min Ckt e on ma om na om DRE N A N A N A 3 2 2 4 1 2 3 2 2 4 1 2 N A N A N A 1 5 1 2 1 2 1 2 15 1 2 1 1 5 1 1 2 N A N A N A 2 5 1 8 0 9 2 5 1 8 0 9 N A N A N A N A N A N A N A N A 3 4 3 4 3 4 3 4 3 4 3 4 83 1 41 0 52 0 79 0 73 0 38 0
11. 508 5 8 208 230 1 187 254 109 0 11 2 096 208 230 3 187 254 2 13 6 83 1 11 2 460 3 414 508 6 1 41 0 11 2 LEGEND HACR Heating Air Conditioning and Refrigeration Hp Horsepower TERTE FLA Full Load Amps LRA Locked Rotor Amps MOCP Maximum Overcurrent Protection HACR breaker B RLA Rated Load Amps C US Listed Unit has two compressors 11 Table 2D Electrical Data Upgrade 3 Evaporator Motor with Standard Condenser Motor FAN MOTORS 50AH 60 Hz Upgrade 3 Standard Min Ckt MOCP wm wax ory ma ina He Amps LA 024 1 N A N A 208 230 1 187 254 16 7 79 0 1 3 1 7 40 036 208 230 3 187 254 1 10 4 1 3 1 3 25 460 3 414 508 5 8 2 13 0 7 15 208 230 1 187 254 19 9 109 0 1 3 2 1 3 1 7 50 048 208 230 3 187 254 1 13 6 83 1 1 2 4 1 3 1 3 35 460 3 414 508 6 1 41 0 1 1 2 1 3 0 7 15 208 230 1 187 254 26 4 134 0 1 3 2 1 7 65 060 208 230 3 187 254 1 16 0 110 0 1 2 4 1 3 40 460 3 414 508 7 8 52 0 1 1 2 0 7 20 208 230 1 187 254 16 7 79 0 115 6 5 1 42 65 072 208 230 3 187 254 2 10 4 73 0 11 5 4 8 1 3 2 40 460 3 414 508 5 8 38 0 1 1 5 2 4 1 1 25 208 230 1 187 254 N A N A 096 208 230 3 187 254 2 83 1 2 3 55 460 3 414 508 6 1 41 0 25 FAN MOTORS T NOU COMPRESSOR Evaporator Condenser UNIT VEN Standard Upgrade 1 50AH 60 H2 pg win or ov ma um w ww na 024 208 230 1 208 230 1 187 254 N A
12. Manual Reset LPS Setting psig Cutout 75 7 Reset 100 7 CONDENSATE DRAIN CONNECTION Size in Type 7 g 0D CONDENSER COIL Copper Tubes Aluminum Fins Size L x H in 90 x 30 40 x 30 2 coils 40 x 30 2 coils Number of Rows Fins in 2 12 2 20 2 20 CONDENSER FAN Centrifugal Belt Drive Nominal Cfm 3000 5200 6400 Blower Size in 15x15 18x 18 18 x 18 Motor Hp Rpm Standard Motor 0 33 1725 1 00 1725 1 50 1725 Upgrade 1 Motor 0 50 1725 1 50 1725 2 00 1725 Upgrade 2 Motor 0 75 1725 3 00 1725 EVAPORATOR COIL Copper Tubes Aluminum Fins Size L x H in 32 x 26 46 x 28 46 x 28 Number of Rows Fins in 3 14 3 14 3 14 EVAPORATOR AIR FAN Centrifugal Belt Drive Nominal Cfm 2000 2400 3200 Blower Size in 12x9 15x15 15x15 Motor Hp Rpm Standard Motor 0 33 1725 0 50 1725 0 75 1725 Upgrade 1 Motor 0 50 1725 0 75 1725 1 00 1725 Upgrade 2 Motor 0 75 1725 1 00 1725 1 50 1725 Upgrade 3 Motor 1 00 1725 1 50 1725 2 00 1725 INDOOR AIR FILTERS Factory Supplied Disposable Type Number Size in 2 18 24x 1 2 20 25x 1 2 20 25 x 1 INTERCONNECTING TUBING SIZE Suction Qty in 1 7 g 1 5 8 1 7 g Liquid Qty in 1 3 s 1 3 g 1 7 g LEGEND HPS High Pressure Switch LPS Low Pressure Switch Shipping weights include base unit plus packaging tif components to be split additional refrigerant will be needed Step 4 Rig and Place Unit
13. N A 1 1 5 1 1 2 W 83 1 41 0 Table 2H Electrical Data Upgrade 3 Evaporator Motor with Upgrade 1 Condenser Motor FAN MOTORS 50AH 60 Hz Upgrade 3 Upgrade 2 Anes Amps 024 208 230 1 208 230 1 187 254 N A N A N A N A N A N A 036 208 230 3 187 254 N A N A N A N A N A N A N A N A 460 3 414 508 N A N A N A N A N A N A 208 230 1 187 254 19 9 109 0 1 2 2 5 50 048 208 230 3 187 254 1 1 as 83 1 1 8 35 460 3 414 508 41 0 0 9 15 208 230 1 187 254 56 4 2 5 65 060 208 230 3 187 254 E 110 0 1 8 40 460 3 414 508 52 0 0 9 20 208 230 1 187 254 ic 79 0 1 6 5 65 072 208 230 3 187 254 10 4 73 0 11 2 1 48 45 460 3 414 508 5 8 38 0 1 1 5 2 4 25 208 230 1 187 254 N A N A A N A 096 208 230 3 187 254 13 6 83 1 0 55 460 3 414 508 6 1 41 0 25 FAN MOTORS COMPRESSOR Evaporator Condenser Standard Upgrade 2 50AH 60 Hz pg Mn max arv ira Mp FLA Hp FLA 024 208 230 1 208 230 1 187 254 N A N A N A N A N A N A N A 036 208 230 3 187 254 1 N A N A N A N A N A N A N A 460 3 414 508 N A N A N A N A N A N A N A 208 230 1 187 254 19 9 109 0 1 3 7 3 4 3 2 29 8 048 208 230 3 187 254 1 13 6 83 1 1 3 1 3 3 4 2 4 20 7 460 3 414 508 6 1 41 0 1 3 0 7 3 4 1 2 9 5 208 230 1 187 254 26 4 134 0 1 3 i 3 4 3 2 37 9 060 208 230 3 187 254 16 0 110 0 1 3 3 4 2 4 23 7 460 3 414 508 7 8 52 0 1 3 0 5 3 4 1 2
14. halves together by hand to ensure proper mating of threads Continue to handthread each half cou pling to its mating half until resistance is felt approxi mately 11 2 to 13 4 turns Complete the connection of the mating half couplings with a wrench The suction line couplings size 12 will be totally engaged after an addi tional 51 5 to 53 4 turns The liquid line couplings size 8 will be totally engaged after an additional 4 2 to 43 4 turns Use a backup wrench to prevent the couplings from twisting 6 Refrigerant piping must be insulated in accordance with local codes and or applicable ASHRAE standards Insu lation exposed to weather must be suitable for outdoor use Provide protection from water and shielding from so lar radiation as necessary 7 Add refrigerant to the system to compensate for the addi tional interconnecting tubing The suction line should be pitched downward to the compressor sloping approxi mately 1 4 every 10 ft to facilitate oil return P traps field supplied are required for all suction line risers ev ery 15 ft When the evaporator is above the condensing section an inverted P trap should be incorporated as close as possible to the evaporator this minimizes flood back oil slugging during the off cycle If the condensing section is more than 50 ft above the evaporator consult Carrier for specific refrigeration components Step 8 Make Electrical Connections Con nect power wiring t
15. holes shown in Fig 2 5 Unit center of gravity is shown in Fig 6 The ceiling and ceiling supports of existing buildings may require reinforcements follow all applicable codes Manufacturer reserves the right to discontinue or change at any time specifications or designs without notice and without incurring obligations Catalog No 04 53500057 01 Printed in U S A Form 50AH 14SI Pg 1 5 10 Replaces 50AH 12SI 50AH AC 048 5 50AH Horizontal Indoor Single Package Cooling Unit Compressor Options AC Air Cooled Unit Size Nominal Tons 024 2 060 5 036 3 072 6 048 4 096 8 Voltage Description 3 208 230 1 60 5 208 230 3 60 6 460 3 60 Evaporator Configuration Standard Motor with Standard Drive A Standard Motor with Alternate 1 Drive B Standard Motor with Alternate 2 Drive C Upgrade 1 Motor with Standard Drive D Upgrade 1 Motor with Alternate 1 Drive E Upgrade 1 Motor with Alternate 2 Drive F Upgrade 2 Motor with Alternate 1 Drive G Upgrade 2 Motor with Alternate 2 Drive H Upgrade 3 Motor with Alternate 2 Drive Includes interconnecting kit and electrical box TNot available with splitable units 2 1 XX Factory Installed Options Packaging 1 Domestic 2 Export Design Changes 2 R 410A Original Design Economizer and Hot Gas Options None A Hot Gas Bypasst B Hot Gas Reheatt
16. 1 13 6 83 1 1 2 4 3 4 2 4 i 35 460 3 414 508 6 1 41 0 1 1 2 3 4 1 2 i 15 208 230 1 187 254 26 4 134 0 1 3 2 3 4 65 060 208 230 3 187 254 1 16 0 110 0 1 2 4 3 4 40 460 3 414 508 7 8 52 0 1 1 2 3 4 T 2 20 208 230 1 187 254 N A N A N A N A N A N A 072 208 230 3 187 254 N A N A N A N A N A N A 460 3 414 508 N A N A N A N A N A N A 5 208 230 1 187 254 N A o jid MA N A 096 208 230 3 187 254 83 1 55 460 3 414 508 6 1 41 0 25 LEGEND HACR Heating Air Conditioning and Refrigeration Hp Horsepower TERTE FLA Full Load Amps LRA Locked Rotor Amps MOCP Maximum Overcurrent Protection HACR breaker RLA Rated Load Amps Unit has two compressors LisTED Table 3 Evaporator Fan Performance UNIT EXTERNAL STATIC PRESSURE in wg s ze crm 02 08 10 12 ibaa Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Bhp 900 509 632 014 739 019 833 024 919 030 997 037 024 800 495 007 623 012 733 017 829 022 915 028 993 034 700 470 006 604 717 814 o19 0 25 979 031 1350 550 017 651 023 744 029 831 036 912 043 036 1200 526 014 635 019 734 0 25 825 031 908 0 38 986 045 1050 510 627 oie 731 021 824 0 27 910 0 33 988 0 40 1800 607 029 685 0 36 760 043 832 050
17. 11 6 208 230 1 187 254 N A N A N A N A N A N A 072 208 230 3 187 254 N A N A N A N A N A N A 460 3 414 508 N A N A N A N A N A N A 208 230 1 187 254 N A N A NA NA NA N A 096 208 230 3 187 254 2 83 1 3 4 41 4 460 3 414 508 41 0 3 4 18 9 LEGEND HACR Heating Air Conditioning and Refrigeration Hp Horsepower NTERTE FLA Full Load Amps LRA Locked Rotor Amps MOCP Maximum Overcurrent Protection HACR breaker RLA Rated Load Amps Unit has two compressors Lis TED 14 Table 2J Electrical Data Upgrade 1 Evaporator Motor with Upgrade 2 Condenser Motor FAN MOTORS 50AH 60 Hz Upgrade 1 Te r pe Amps 024 208 230 1 N A 208 230 1 187 254 N A N A N A N A 036 208 230 3 187 254 N A N A N A N A N A N A N A N A 460 3 414 508 N A N A N A N A N A N A N A N A 208 230 1 187 254 19 9 109 0 1 2 5 3 4 2 50 048 208 230 3 187 254 1 13 6 83 1 1 2 1 8 3 4 2 4 35 460 3 414 508 6 1 41 0 1 2 0 9 3 4 1 2 9 7 15 208 230 1 187 254 26 4 134 0 1 2 2 5 3 4 F 65 060 208 230 3 187 254 1 16 0 110 0 1 5 1 8 3 4 40 460 3 414 508 7 8 52 0 1 2 0 9 3 4 7 3 1 20 208 230 1 187 254 N A N A N A N A N A N A N A 072 208 230 3 187 254 N A N A N A N A N A N A N A 460 3 414 508 N A N A N A N A N A N A N A 208 230 1 187 254 N A MS n N A N A 096 208 230 3 187 254 83 1 42 2 55 460 3 414 508 6 1 41 0 19 3 25 FAN MOTORS 50AH 60 Hz Upgrade 2 Up
18. HINOSI 1991 39IAH3S 92 1NOHJ 09 AONVYVATO 3OIAH3S NI 9 Seuoul suoisueuilq ILON 1331 uvad 8 4 B i 3LYSNJANO9 abt vo E 8 1 9 SS300V SS300V SS300V SS309V uaria 1O3NNOO HOSS3HdWOO Mono dOL y 57148 dAL SNIONVH 8 3 10H 3ONVHV3T1O NOILO3S NOILO3S zu on 21 16 T o aor ni ect en ze 16 ero io oor eer vor vu ee ni zs sto ow sor oer ew eu s9 ni zs vzo 9 3 3 a 9 8 v qi d3NHOO 40 LH5I3A LINN NOILAQSTHLISIG LHOIAM 9NILVHAddO 1 21 pejeisuj A1012e4 YUM SHUN 090 tZOHVOS suoisueuig HUN e 614 1403 dAL SNOLLOHNNOO voL LE 1331 SS300V uaria do 8 2 3 LVSN3QNOO SS322V 109 sue 9 v L Ee SS320V LOANNOO XIND ss399V MWOSS3HdWOO dol V vlad 579 L dAL GOW 9NIONVH 8 3ONVHY3TO TIV L3Gd NOILO3S QNOD q 081 S 1066 1eziuouo93 Z Seuoui ui suoisueuuiq L SHLON uinjeH Jv Aiddng episino vSO QN3911 SHUN pjepueis 960 220HVO0S suoisueuig 614 Aiddng epising YSO ee SUOISUBWIG 310N QN3931 1H9IH A1NOHJd 1331 Huvad
19. N A N A N A N A N A N A 036 208 230 3 187 254 1 N A N A N A N A N A N A N A 460 3 414 508 N A N A N A N A N A N A N A 208 230 1 187 254 19 9 109 0 1 3 1 7 1 5 2 5 048 208 230 3 187 254 1 13 6 83 1 1 8 1 3 15 1 8 460 3 414 508 6 1 41 0 1 8 0 7 1 2 0 9 208 230 1 187 254 26 4 134 0 1 3 1 7 1 2 2 5 060 208 230 3 187 254 1 16 0 110 0 1 3 1 3 1 2 1 8 460 3 414 508 7 8 52 0 1 3 0 7 1 2 0 9 208 230 1 187 254 16 7 79 0 1 2 11 2 072 208 230 3 187 254 2 73 0 1 2 112 460 3 414 508 5 8 38 0 1 5 208 230 1 187 254 N A N A 096 208 230 3 187 254 2 i 83 1 3 4 460 3 414 508 41 0 3 4 LEGEND HACR Heating Air Conditioning and Refrigeration Hp Horsepower TERTE FLA Full Load Amps LRA Locked Rotor Amps MOCP Maximum Overcurrent Protection HACR breaker Hn RLA Rated Load Amps C US Unit has two compressors LisTED 12 UNIT 50AH 024 036 048 060 072 096 UNIT 50AH 024 036 048 060 072 096 HACR Hp FLA LRA MOCP RLA Table 2F Electrical Data Upgrade 1 Evaporator Motor with Upgrade 1 Condenser Motor VOLTAGE HANGE COMPRESSOR V PH 60 Hz LA 208 230 1 187 254 N A 208 230 3 187 254 N A 2 460 3 414 508 N A 208 230 1 187 254 19 9 208 230 3 187 254 13 6 460 3 414 508 187 254 187 254 414 508 187 254 187 254 414 508 187 254 187 254 414 508 208 230 1 208 230 3 460 3 26 4 16 0 7 8 16 7 10 4 5 8 208 230 1 208
20. ROOMTOP 50AH024 096 Horizontal Indoor Single Package Cooling Units with PURON Refrigerant R 410A Installation Start Up and Service Instructions CONTENTS SAFETY CONSIDERATIONS 1 GENERAL eet eec rer RA ve tbi 1 INSTALLATION 1 17 Step 1 Receive and Inspect Unit 1 Step 2 Protect Unit from Damage 1 Step 3 Provide Unit Support 1 Step 4 Rig and Place Unit 8 Step 5 Make Condensate Piping 1 8 Step 6 Install Ductwork 8 Step 7 Split Systems Factory Option if 8 Step 8 Make Electrical Connections 10 FIELD CONTROL WIRING THERMOSTAT WIRE Step 9 Adjust Fan Speed 10 17 SERVICE 17 18 SAFETY CONSIDERATIONS Installing and servicing air conditioning equipment can be hazardous due to system pressure and electrical components Only trained and qualified service personnel should install repair or service air conditioning equipment Untrained personnel can perform basic maintenance func tions such as cleaning coils and filters and replacing filters All other operations should be performed by trained service per sonnel When working on ai
21. e changed BELT TENSION ADJUSTMENT Using a gage apply 4 lb of force to the center of the belt and adjust the tension until a deflection of g4 in is achieved for every inch of shaft center distance See Fig 10 Ideal belt tension 1s the lowest value under which belt slip will not occur at peak load conditions 18 STRING STRAIGHT EDGE FIXED SHEAVE Fig 9 Sheave Alignment ter BELT SPAN LB FORCE DEFLECTION Fig 10 Fan Belt Tension Refrigerant Charge Unit is shipped fully charged Amount of refrigerant charge is listed on unit nameplate also refer to Table 1 Refer to Carrier GTAC II Module 5 Charg ing Recovery Recycling and Reclamation manual Unit panels must be in place when unit is operating during charging procedure Unit must operate for at least 10 minutes before adjusting charge Use standard evacuating techniques After evacuating system weigh in the specified amount of re frigerant Refer to Table 1 Copyright 2010 Carrier Corporation Manufacturer reserves the right to discontinue or change at any time specifications or designs without notice and without incurring obligations Catalog No 04 53500057 01 Printed in U S A Form 50AH 14SI Pg 20 5 10 Replaces 50AH 12SI
22. ent are nonparal lel shafts and improperly located sheaves Where shafts are not parallel belts on one side are drawn tighter and pull more than their share of the load As a result these belts wear out faster requiring the entire set to be replaced before it has given maxi mum service If misalignment is in the sheave belts enter and leave the grooves at an angle causing excessive belt and sheave wear SHAFT ALIGNMENT Check shaft alignment by measur ing the distance between the shafts at 3 or more locations If the distances are equal then the shafts are parallel SHEAVE ALIGNMENT 1 To check the location of the fixed sheaves on the shafts use a straightedge or a piece of string If the sheaves are properly aligned the string will touch them at the points indicated by the arrows in Fig 9 Rotate each sheave a half revolution to determine whether the sheave is wob bly or the drive shaft is bent Correct any misalignment 2 With sheaves aligned tighten cap screws evenly and progressively NOTE There should be a s in to 4 in gap between the mating part hub and the bushing flange If the gap is closed the bushing is probably the wrong size 3 With taper lock bushed hubs be sure the bushing bolts are tightened evenly to prevent side to side pulley wob ble Check by rotating sheaves and rechecking sheave alignment When substituting field supplied sheaves for factory supplied sheaves only the motor sheave should b
23. er in shear RIS isolators Do not loosen or remove compressor holddown bolts Internal Wiring Check all electrical connections in unit control boxes and tighten as required Refrigerant Service Valves Each unit system has 2 Schrader type service ports one on the suction line and one on the compressor discharge line Be sure that caps on the ports are tight Compressor Rotation On 50AH036 096 3 phase units it is important to be certain compressor is rotating in the proper direction To determine whether or not compressor is rotating in the proper direction 1 Connect service gages to suction and discharge pressure fittings 2 Energize the compressor 3 The suction pressure should drop and the discharge pres sure should rise as is normal on any start up If the suction pressure does not drop and the discharge pres sure does not rise to normal levels 1 Note that the condenser and evaporator fans may also be rotating in the wrong direction Turn off power to the unit and tag disconnect Reverse any two of the unit power leads Reapply power to the unit remove tag Verify correct refrigerant pressures The suction and discharge pressure levels should move to their normal start up levels NOTE When the compressor is rotating in the wrong direc tion the unit will sound louder than normal and will not provide cooling wR WN Cooling To start unit turn on main power supply Set system selecto
24. grade 2 Min Ckt ie Tow ma um ve wo n 024 208 230 1 187 254 N A N A N A N A N A N A N A 036 208 230 3 187 254 1 N A N A N A N A N A N A N A 460 3 414 508 N A N A N A N A N A N A N A 208 230 1 187 254 19 9 109 0 3 4 a 2 3 4 3 2 31 3 048 208 230 3 187 254 1 13 6 83 1 3 4 2 4 3 4 2 4 21 8 460 3 414 508 6 1 41 0 3 4 1 2 3 4 1 2 10 0 208 230 1 187 254 26 4 134 0 3 4 3 2 3 4 3 2 39 4 060 208 230 3 187 254 1 16 0 110 0 3 4 2 4 3 4 2 4 24 8 460 3 414 508 7 8 52 0 3 4 1 2 3 4 1 2 12 2 208 230 1 187 254 N A N A N A N A N A N A 072 208 230 3 187 254 N A N A N A N A N A N A 460 3 414 508 N A N A N A N A N A N A 208 230 1 187 254 N A N A AA NA PP N A 096 208 230 3 187 254 f 83 1 1 1 2 43 8 460 3 414 508 41 0 1 1 2 20 1 LEGEND HACR Heating Air Conditioning and Refrigeration Hp Horsepower WTERTEX FLA Full Load Amps LRA Locked Rotor Amps MOCP Maximum Overcurrent Protection HACR breaker n RLA Rated Load Amps C US Unit has two compressors Liste 15 Table 2L Electrical Data Upgrade 3 Evaporator Motor with Upgrade 2 Condenser Motor FAN MOTORS 50AH 60 Hz Upgrade 3 Upgrade 2 Ane Amps 024 208 230 1 N A 208 230 1 187 254 N A N A N A 036 208 230 3 187 254 N A N A N A N A N A N A N A N A 460 3 414 508 N A N A N A N A N A N A N A N A 208 230 1 187 254 19 9 109 0 1 3 2 3 4 2 50 048 208 230 3 187 254
25. ible ductwork to attach duct to unit and to help control transmission of vibra tions to building structures Attach ductwork to the return and supply ends of both coils If unit is located with condenser close to outside of building install a field supplied rainhood Hood intake dimensions should be same as condenser return air dimensions In addi tion install a triple layer bird screen over rainhood intake to eliminate possibility of insects birds water or debris from entering unit Ensure hood and or louvers are installed correct ly to avoid condenser air recirculation Step 7 Split Systems Factory Option if Required The Roomtop 50AH units may be split into 2 sections if desired with condensing section mounted remotely horizontally The unit must be ordered with the Splittable cabinet type as shown in the unit model number nomenclature See Fig 1 All splittable units come with the interconnecting tubing kit Sections installed in the same horizontal plane may be sepa rated by up to 50 equivalent ft of tubing Use type L copper or better Condensing section must be located in same plane as or above evaporator section to maintain the liquid refrigerant seal at the expansion device This permits expansion device to feed liquid refrigerant to evaporator coil properly To split sections some of the following steps may be eliminated depending on particular application 1 Disconnect all electrical power to unit
26. o junction box located on unit side near control box access panel All wiring must comply with National Electrical Code NEC and all local code requirements Operating voltage to compressor must be within voltage range as indicated on unit nameplate On 3 phase units volt ages between phases must be balanced within 2 and current must be balanced within 10 Contact local power company for correction of improper voltage or phase imbalance Unit failure as a result of operation on improper line voltage or ex cessive phase imbalance constitutes abuse and may cause dam age to electrical components Such operation would invalidate any applicable Carrier warranty Install a fused disconnect per NEC Refer to unit nameplate and Tables 2A 2L for fuse sizes and wire amperages for all units FIELD CONTROL WIRING Install a Carrier approved accessory thermostat assembly according to installation instructions provided by thermostat manufacturer Locate thermostat assembly on a solid wall in the conditioned space away from drafts to sense average room temperature Using thermostat cable or equivalent single leads of no 18 AWG American Wire Gage colored wire route cable or wire from the subbase terminals up and through connector on unit side below power lead junction box and connect to low volt age terminal block inside the control box THERMOSTAT WIRE Use 18 gage for 0 to 50 ft long wires and 16 gage for 51 to 75 ft wire lengths
27. outed and brazed with the self sealing couplings in their final proper location so that there will be no difficulty when the final coupling as sembly is made 3 Run the interconnecting tubing required NOTE Installations may be made with up to 50 ft equiv alent line lengths by installing the recommended tube siz es and adding the necessary refrigerant For equivalent line lengths greater than 50 ft contact Carrier for line siz ing and additional accesories required IMPORTANT On units with more than one refrig erant circuit be careful not to intermix lines of the various circuits If the connections were labeled before disconnecting the couplings this should not be a problem Half couplings may be removed to make brazing to the interconnecting tubing more convenient 5 4 D rF 3 Cc A Ds B g A cT porem lecce ER r3 EVAPORATOR CONDENSING SECTION D D SECTION C A B 9 C EM Male self sealing fittings B Refrigerant piping between sections C Female self sealing fittings D Schrader fittings Fig 8 Tubing Installation A CAUTION When brazing tubing to the self sealing couplings be sure to use a wet rag running water bath or chill blocks on the quick connects to prevent o
28. porator Coil The evaporator coil is accessible for cleaning through the side access panel on evaporator section When necessary wash coil with a commercial cleaner Oakite 164 or dishwasher detergent using a pressurized spray canis ter Flush coil from return air duct side and take care not to get water in ductwork or unit insulation Condensate Drain Clean and empty drain pan at least once a year to prevent sludge build up Lubrication Lubrication of the condenser and evapora tor motors is not necessary since both are equipped with permanently lubricated bearings Do not oil Unit Condenser Motor All 50AH units contain belt driven adjustable pulley fan systems The unit fan motors are shipped with adjustable pulley at 4 turns open Blower Wheel Servicing In space servicing is rec ommended for the evaporator and condenser blowers Both are removed by loosening and removing the 2 screws sizes 024 060 or 4 screws sizes 072 and 096 that hold them in place In both cases the entire assembly is then moved outside of the base unit Once outside the blower wheel and condenser shaft bearings and or evaporator motor can be serviced Blower Belt Adjustment Inspect blower belt for wear proper belt tension and pulley alignment as conditions require or at the beginning of each heating and air conditioning season Make sure that fan shafts and motor shafts are parallel and level The most common causes of misalignm
29. r conditioning equipment observe precautions in the literature and on tags and labels attached to unit Follow all safety codes Wear safety glasses and work gloves Use quenching cloth for unbrazing operations Have fire extinguisher available A WARNING Disconnect all power to the unit before performing mainte nance or service Electrical shock and personal injury could result NOTE Ensure voltage on unit agrees with voltage listed on the unit rating plate GENERAL The 50AH024 096 units are single package indoor hori zontally mounted air conditioners of 2 to 8 tons capacity The 50AH units are ASHRAE American Society of Heating Re frigerating and Air Conditioning Engineers 90 1 compliant These units can be mounted as factory shipped single package units or can be separated and mounted as a split system If unit is split the condensing section must be mounted horizontally All units are designed to be ducted on both the condenser and evaporator sides Centrifugal blowers are used to ensure quiet air delivery to the conditioned space Sound level requirements should be determined before final unit installa tion site is chosen Unit servicing is relatively simple since access to the con denser and evaporator motors blowers belt and pulley is gained through access panels located on the sides of the unit These panels may also be used for cleaning of condenser coils Unit side panels also provide access to con
30. r switch at COOL position and fan switch at AUTO position Adjust thermostat to a setting below room temperature Compressor condenser and evaporator motors start on closure of contactors TO SHUT OFF UNIT Set system selector switch at OFF position or reset thermostat at a position above room temperature 17 NOTES 1 Refer to Table 1 for condenser fan motor and drive information 2 Upgrade 1 Static Motor is required for boldface values 3 Upgrade 2 Static Motor is required for shaded values SERVICE A WARNING Disconnect all power to the unit before performing mainte nance or service Electrical shock and personal injury could result IMPORTANT If repairs to refrigerant cycle compo nents e g compressor filter drier etc are required recover all refrigerant from the system by using both high and low pressure ports Then remove base unit from the space Filters Filters are disposable and should be inspected and replaced at regular intervals monthly or as conditions require They are located in front of the evaporator coil and may be re moved by sliding them horizontally out to edge of unit See Fig 2 5 No tools are required for installation or removal of filters Condenser Coil The condenser coil is accessible through the side access panel on condenser section or through side access panel on condenser section Use a stiff brush when cleaning coil Be careful not to bend aluminum fins Eva
31. trol box and pres sure switches Refrigeration cycle components e g compressor filter drier etc can be serviced upon removal of the base unit from the space INSTALLATION A WARNING Determine building alterations required to run piping wir ing and ductwork Follow dimensional drawings carefully for ductwork piping locations electrical wiring and over all unit dimensions Read all installation instructions before starting installation The 50AH units are intended for indoor installation only Step 1 Receive and Inspect Unit Unpack and check unit against shipping order See Fig 1 for model number nomenclature Inspect carefully for concealed shipping dam age If unit is damaged or incomplete file claim with transpor tation company and advise Carrier immediately Step 2 Protect Unit from Damage To main tain warranty unit must be protected against theft and vandal ism and stored indoors at all times Step 3 Provide Unit Support Refer to Fig 2 5 for unit dimensions Refer to Table 1 for unit sizes and weights Each unit requires the following field supplied items 8 threaded suspension rods 3 16 SAE Grade 1 minimum 4 additional rods are needed if the unit has a factory installed air side economizer 8 washers 8 locknuts Install the 8 field supplied rods by suspending them from a suitable ceiling support Locate rods to mate with 8 outside cor ner rigging
32. verheating the valves and dam aging the seals 4 The interconnect tubing kit contains a sufficient number of Schrader access valves to permit installation of one in each end of both the liquid and suction lines of the field supplied tubing Each interconnecting line suction liq uid hot gas must have one of the supplied Schrader ac cess fittings installed into the field supplied tubing how ever for short lengths of tubing only one Schrader in each line is necessary Install the Schrader valve fittings into the tubing before brazing the couplings onto the ends of the tubing Use a 4 in hole to mount the valve Clean and debur the tubing before doing any brazing to ensure that no chips or debris are left in the refrigerant circuit Remove the Schrader valve cap and core before doing any brazing 5 After brazing the tubing to the self sealing coupling halves evacuate each line to 500 microns Check to make sure that each line holds a vacuum after removal of the vacuum pump indicating no leaks Add the appropriate charge of R 410A refrigerant using the Schrader valves Refasten male halves to outer back panel of evaporator section with flanges and screws if they were removed for brazing to tubing Wipe off coupling seals and threaded surfaces with a clean cloth to prevent the inclusion of dirt or foreign material into the system Lubricate rubber seal and metal seal in the male halves with refrigeration oil Thread coupling
33. ystem Design Manual INTERCONNECTING REFRIGERANT TUBING The interconnecting tubing kit comes with all factory optional split table units After the separated sections have been installed the interconnecting tubing can be run using the self sealing cou plings supplied in the interconnect tubing kit see Fig 7 and 8 SELF SEALING SELF SEALING COUPLING COUPLING MALE HALF FEMALE HALF SCREWS SELF SEALING FLANGE Fig 7 Self Sealing Coupling For dual circuits 2 kits are supplied It is recommended that some refrigerant oil be placed on the coupling threads to facili tate threading Perform the following procedure 1 For condensing section hand thread the female halves of the self sealing couplings supplied with the interconnect tubing kit onto the male couplings factory supplied and installed on the condensing section Turn union nut ap proximately 1 to 11 2 turns This is to make sure that the interconnecting tubing will be routed and brazed with the self sealing couplings in their final proper location so that there will be no difficulty when the final coupling as sembly is made 2 For evaporator section hand thread the male halves of the self sealing couplings supplied with the interconnect tubing kit onto the female couplings factory supplied and installed on the evaporating section Turn union nut approximately 1 to 11 2 turns This is to make sure that the interconnecting tubing will be r
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