Carrier 38AU Installation, Start-Up And Service Instructions Manual Download | Manualshive

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APPENDIX B — WIRING DIAGRAMS (CONT)

Fig. J — Dual Circuit/Two Stage Wiring Diagram, 10 - 12.5 Ton — 460-3-60 Units

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Summary of Contents for 38AU

Page 1: ...fied installer or agency must use factory authorized kits or accessories when modifying this product Refer to the individual instructions packaged with the kits or accessories when installing Follow a...

Page 2: ...oil when appropriate 2 Drain oil from low points and traps in suction line tubing and hot gas bypass tubing if appropriate and evaporator if they were not replaced Removing oil from evaporator coil ma...

Page 3: ...ee Table 4 For physical data see Tables and 6 Fig 1 Model Number Nomenclature Fig 2 Serial Number Nomenclature EVAPORATOR COIL HAS CONNECT TO MODEL NOTES Single Circuit 38AUZ ONLY Two Circuits 38AUZ M...

Page 4: ...4 Fig 3 38AUD Z 07 14 Base Unit Dimensions...

Page 5: ...on System Circuits Comp Type 1 1 Scroll 1 1 Scroll 1 1 Scroll 1 1 Scroll 1 1 Scroll 1 1 Scroll Refrigerant Type Puron R 410A Puron R 410A Puron R 410A Puron R 410A Puron R 410A Puron R 410A R 410A shi...

Page 6: ...to high walls Evaluate the path and required line length for interconnecting re frigeration piping including suction riser requirements outdoor unit above indoor unit liquid line lift outdoor unit bel...

Page 7: ...rator Consider and identify also the arrangement of the tubing path quantity and type of elbows in both lines liquid line solenoid size filter drier and any other refrigeration specialties located in...

Page 8: ...6 1 2 1 6 2 1 0 7 2 5 0 8 2 9 1 0 3 3 1 1 Charge lb 15 6 19 0 19 7 20 8 24 1 23 1 26 9 25 1 30 7 26 0 32 8 27 0 34 8 27 9 37 1 TR 2 08 2 53 2 63 2 77 3 21 3 08 3 59 3 35 4 09 3 47 4 37 3 60 4 64 3 73...

Page 9: ...0 7 Charge lb 17 0 18 0 19 0 19 5 20 6 23 7 21 8 25 7 27 6 29 5 36 2 31 5 39 0 TR 1 36 1 44 1 52 1 56 1 65 1 90 1 74 2 05 2 21 2 36 2 89 2 52 3 12 LEGEND TR Charge to unit capacity ratio lbs per ton...

Page 10: ...ion Line Piping Speed Riser If the vertical elevation difference is greater than 20 ft 6 1 m lin ear feet or requires more than two short lift segments select the Circuit 1 suction line size from Doub...

Page 11: ...he 38AUD unit s Circuit 1 Note that refrigerant suction piping should be insulated INSTALL FILTER DRIER S AND MOISTURE INDICATOR S Every unit MUST have a filter drier in the liquid line 38AUD models r...

Page 12: ...o liquid line solenoid valves also requires a separate control power transformer for the liquid solenoid valve loads Se lect TRAN3 transformer part number according to unit power supply LEGEND Install...

Page 13: ...vice ports outside the 38AU service valves following description in GTAC II Module 4 System Dehydration This unit is designed for use with Puron R 410A refrigerant Do not use any other refrigerant in...

Page 14: ...sizing data is provided on the unit informative plate Locate on unit cabi net or within sight of the unit per national or local codes Do not cover unit informative plate if mounting the disconnect on...

Page 15: ...rcuit being de energized when the unit disconnect or HACR switch is open See Fig 15 Fig 15 Powered Convenience Outlet Wiring The unit powered convenience outlet has a 1000 VA rated trans former Maximu...

Page 16: ...ld control connections and the unit s label diagram for field supplied wiring details Route control wires to the 38AU unit through the opening in unit s end panel to the connections terminal board in...

Page 17: ...on connect ing the PremierLink controller and its various sensors If the unit will be operating at 208 3 60 power remove the black wire BLK from the transformer primary connection labeled 230 and move...

Page 18: ...0 7 20 30 19 104 NO 208 230 3 60 187 253 48 1 245 2 1 5 64 64 80 80 59 59 251 251 NO 460 3 60 414 506 18 6 125 2 0 8 25 30 23 129 UNIT SIZE TWO STAGE COOLING V Ph Hz VOLTAGE RANGE COMPRESSOR OFM POWER...

Page 19: ...LA ea MCA Fuse or HACR Brkr FLA LRA 12 575 3 60 518 633 5 7 39 5 7 39 2 0 7 15 20 15 82 208 230 3 60 187 253 15 9 110 15 9 110 2 1 5 39 39 50 50 40 40 226 226 460 3 60 414 506 7 7 52 7 7 52 2 0 8 19 2...

Page 20: ...ecessary to wait the 24 hour period Preliminary Checks 1 Check that electric power supply agrees with unit nameplate data 2 Verify that the compressor crankcase heater is securely in place 3 Check tha...

Page 21: ...ormally used The charts are based on charging the units to the correct subcooling for the various operat ing conditions Accurate pressure gage and temperature sensing device are required Connect the p...

Page 22: ...850 6 0 6 12 18 24 30 36 42 48 54 60 20 40 60 80 100 120 140 50 100 150 200 250 300 350 400 450 500 550 600 Temperature at Liquid Valve C F Pressure at Liquid Valve PSIG Kpa 6 Ton Charging Chart R 410...

Page 23: ...4 60 20 40 60 80 100 120 140 50 100 150 200 250 300 350 400 450 500 550 600 Temperature at Liquid Valve C F Pressure at Liquid Valve PSIG Kpa 7 5 Ton Charging Chart R 410A Refrigerant Add Charge if Ab...

Page 24: ...850 6 0 6 12 18 24 30 36 42 48 54 60 20 40 60 80 100 120 140 50 100 150 200 250 300 350 400 450 500 550 600 Temperature at Liquid Valve C F Pressure at Liquid Valve PSIG Kpa 10 Ton Charging Chart R 41...

Page 25: ...50 6 0 6 12 18 24 30 36 42 48 54 60 20 40 60 80 100 120 140 50 100 150 200 250 300 350 400 450 500 550 600 Temperature at Liquid Valve C F Pressure at Liquid Valve PSIG Kpa 12 5 Ton Charging Chart R 4...

Page 26: ...AGE CHARGING CHART R 410A COMPRESSOR FULL LOAD ALL CONDENSER FANS OPERATING 60 54 48 42 36 30 24 18 12 6 0 6 140 120 100 80 60 40 20 50 350 100 700 150 1050 200 1400 250 1750 300 2100 350 2450 400 280...

Page 27: ...24 18 12 6 0 6 50 100 150 200 250 300 350 400 450 500 550 600 350 700 1050 1400 1750 2100 2450 2800 3150 3500 3850 Pressure at Liquid Valve PSIG Kpa Temperature at Liquid Valve C F 7 5 Ton 2 Stage Ch...

Page 28: ...t B Charging Chart R 410A Refrigerant Add Charge if Above the Curve Remove Charge if Below the Curve 38AU501102 C C 38AU501102 350 700 1050 1400 1750 2100 2450 2800 3150 3500 3850 6 0 6 12 18 24 30 36...

Page 29: ...IFC will be energized and indoor supply fan motor runs Thermostat output Y1 is energized ter minal Y1 at 38AUD unit receives 24 v 24 v received at CADM1 terminal Y If anti recycle time delay period ha...

Page 30: ...ing bypass vapor from the desuperheating tank and unit runs at full cooling capacity The model 38AUDC also includes the 32LT Motormaster low ambient control as a standard feature Refer to Appendix C f...

Page 31: ...sure of compressor oil to the roof take appropriate precautions to protect roofing Procedures which risk oil leakage include but are not limited to compressor replacement repairing refrigerants leaks...

Page 32: ...or Two Circuit Unit 38AUD 14 shown FACTORY HIGH FLOW ACCESS PORTS There are two additional access ports in the system on the suction tube between the compressor and the suction service valve and on th...

Page 33: ...ALERT LED will blink a num ber of times consecutively pause and the repeat the process The number of blinks defined in Table 20 correlates to a particular ab normal condition troubleshooting tips are...

Page 34: ...sor windings are damaged Yellow ALERT Flash Code 6 Missing Phase LOCKOUT 1 Compressor fuse is open on one phase 2 Broken wire or connector on one phase 3 Compressor motor winding is damaged 4 Utility...

Page 35: ...e Totaline environmentally sound coil cleaner as described below Coil cleaning should be part of the unit s regularly scheduled maintenance procedures to ensure long life of the coil Failure to clean...

Page 36: ...including the finned area tube sheets and coil headers 7 Hold garden sprayer nozzle close to finned areas and apply cleaner with a vertical up and down motion Avoid spraying in horizontal pattern to m...

Page 37: ...oid valve s fails to open 2 Filter drier plugged 3 Expansion valve power head defective 4 Low refrigerant charge Airflow Restricted 1 Coil iced up 2 Coil dirty 3 Air filters dirty 4 Dampers closed Ind...

Page 38: ...ls Wrap all filter driers and service valves with wet cloth when brazing A factory approved liquid line filter drier is required on every unit Do not use an R 22 TXV If indoor unit is equipped with a...

Page 39: ...39 APPENDIX B WIRING DIAGRAMS CONT Fig A Single Circuit Single Stage Wiring Diagram 6 10 Ton 208 230 3 60 Units...

Page 40: ...40 APPENDIX B WIRING DIAGRAMS CONT Fig B Single Circuit Single Stage Wiring Diagram 6 10 Ton 460 3 60 Units...

Page 41: ...41 APPENDIX B WIRING DIAGRAMS CONT Fig C Single Circuit Single Stage Wiring Diagram 6 10 Ton 575 3 60 Units...

Page 42: ...42 APPENDIX B WIRING DIAGRAMS CONT Fig D Single Circuit Two Stage Wiring Diagram 6 Ton 208 230 3 60 and 460 3 60 Units...

Page 43: ...43 APPENDIX B WIRING DIAGRAMS CONT Fig E Single Circuit Two Stage Wiring Diagram 6 Ton 575 3 60 Units...

Page 44: ...44 APPENDIX B WIRING DIAGRAMS CONT Fig F Single Circuit Two Stage Wiring Diagram 7 5 Ton 208 230 3 60 Units...

Page 45: ...45 APPENDIX B WIRING DIAGRAMS CONT Fig G Single Circuit Two Stage Wiring Diagram 7 5 Ton 460 3 60 Units...

Page 46: ...46 APPENDIX B WIRING DIAGRAMS CONT Fig H Single Circuit Two Stage Wiring Diagram 7 5 Ton 575 3 60 Units...

Page 47: ...47 APPENDIX B WIRING DIAGRAMS CONT Fig I Dual Circuit Two Stage Wiring Diagram 10 12 5 Ton 208 230 3 60 Units...

Page 48: ...48 APPENDIX B WIRING DIAGRAMS CONT Fig J Dual Circuit Two Stage Wiring Diagram 10 12 5 Ton 460 3 60 Units...

Page 49: ...49 APPENDIX B WIRING DIAGRAMS CONT Fig K Dual Circuit Two Stage Wiring Diagram 10 12 5 Ton 575 3 60 Units...

Page 50: ...eed control for full fan speed operation during service or maintenance either a remove sensor and place in hot water 120 F 49 C or b rewire to bypass control by connecting speed control input and outp...

Page 51: ...51 APPENDIX C LOW AMBIENT OPTION CONT Fig L 38AUZ 07 14 Motormaster Sensor Locations RTPF 38AUZ 07 08 38AUZ 12 38AUZ 14...

Page 52: ...52 APPENDIX C LOW AMBIENT OPTION CONT Fig M 38AUD 12 14 Motormaster Sensor Locations RTPF 38AUD 12 38AUD 14...

Page 53: ...53 APPENDIX C LOW AMBIENT OPTION CONT Fig N Wind Baffles D K J H G F E C B A...

Page 54: ...41 3 4 43 1 8 1 1 4 9 1 4 17 1 4 25 1 4 33 1 4 41 1 4 BACK 40 40 3 4 41 1 2 43 1 8 4 1 4 11 1 4 18 1 4 25 1 4 32 1 4 39 1 4 38AUZ 14 38AUD 14 LEFT SIDE 40 1 2 41 41 3 4 43 1 8 1 1 4 9 1 4 17 1 4 25 1...

Page 55: ...ALLED PROPERLY Y N __________ ARE THE POWER WIRES TO THE UNIT SIZED AND INSTALLED PROPERLY Y N __________ CONTROLS ARE THERMOSTATAND INDOOR FAN CONTROL WIRING CONNECTIONS MADE AND CHECKED Y N ________...

Page 56: ..._____________________________________________________________________________ ________________________________________________________________________________________________________ _________________...

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