Carrier start-up and Manuale di Installazione

138AUQHeat Pu mp Condensing Units60 HzWith PuronR(R---410A) RefrigerantS i z e s 1 6 --- 2 5Installation, Start---Up andService InstructionsCONTENTSSA

10Table 3 – Puron-duty Filter Drier(s)Model- S ize QtyLiquidLine ODDesiccantVolumePartNumber Ref38AUQ*16 21/2-in 16 cu. in. KH43LG08938AUQ*25 21/2-in

11Make Piping Connections —Piping connections at the 38AUQ unit are ball valves withstub tube extensions. Do not open the unit service valvesuntil all

12Step 6 — Install AccessoriesAccessories requiring modifications to unit wiring shouldbe completed now. These accessories may include WinterStart con

1311 13L1L2 L3CTB1208/230-3-60460-3-60575-3-60Units Without Disconnect OptionUnits With Disconnect Option246135L1L2L3OptionalDisconnectSwitchDisconnec

14Using unit-mounted convenience outlets: Units withunit-mounded convenience outlet circuits will oftenrequire that two disconnects be opened to de-en

15Thermostat —Install a Carrier-approved accessory thermostat accordingto installation instructions included with the accessory.For complete economize

16Table 7 – Electrical Data — 38AUQ*15--25 60 Hz UnitsUNITSIZE38AUQNOMINALPOWERSUPPLYVOLTAGERANGECOMPRESSOR NO C.O. or UNPWRD C.O.No. 1 No. 2 OFM POWE

17PRE-START-UPIMPORTANT: Before beginning Pre-Start-Up orStart-Up, review Start-Up Checklist at the back ofthis book. The Checklist assures proper sta

18Compressor Overload —This overload interrupts power to the compressor wheneither the current or internal motor winding temperaturebecomes excessive,

19C10784Fig. 16 -- 38AUQ*16 Charging Chart38AUQ

2SAFETY CONSIDERATIONSImproper installation, adjustment, alteration, service,maintenance, or use can cause explosion, fire, electricalshock or other c

20C10785Fig. 17 -- 38AUQ*25 Charging Chart38AUQ

21C10786Fig. 18 -- 38AUQ*16 Power Schematic (208/230-3-60 shown)38AUQ

22C10787Fig. 19 -- 38AUQ*25 Power Schematic (208/230-3-60 shown)38AUQ

23C10788Fig. 20 -- 38AUQ*16/25 Control Schematic38AUQ

24OPERATING SEQUENCEBase Unit ControlsIndoor (Supply) Fan —The indoor fan contactor (IFC) is remotely located at thefan coil or fan section. If the th

25During the Defrost cycle, output EHEAT is also energized(if not already energized by a thermostat W2 demand);supplemental heater will be energized.

262. Cover area in front of the unit service panel with aterry cloth shop towel to absorb lubricant spills andprevent run-offs, and protect drop cloth

27Compressor ProtectionCompressor Overcurrent —The compressor has internal limbered motor protection.Compressor Overtemperature Protection (IP) —The c

28DIPSwitchesSpeed-UpJumpersC09275Fig. 23 -- Defrost Control Board (DFB) ArrangementReversing Valve Control —The DFB has two outputs for unit reversin

29Defrost —The defrost control mode is a time/temperature sequence.There are two time components: The continuous runperiod and the test/defrost cycle

3UNIT DAMAGE HAZARDFailure to follow this caution may result in equipmentdamage or improper operation.Never install suction--line filter drier in the

30FansServiceValvesC10791Fig. 26 -- 38AUQ*16 ExteriorOutdoor CoilOutdoor CoilDefrostThermostat(DFT)DefrostThermostat(DFT)High FlowAccess PortsLOCLOCHP

31FansServiceValvesC10793Fig. 28 -- 38AUQ*25 ExteriorOutdoor CoilOutdoor CoilDefrostThermostat(DFT)DefrostThermostat(DFT)High FlowAccess PortHPSHPSLOC

32Comfort Alert Diagnostic ModuleThe Comfort Alert Diagnostic Module (CADM) monitorsand analyzes data from the Copeland Scroll® three-phasecompressor

33Table 10 – LED Status CodesStatus LED Status LED Description Status LED Troubleshooting InformationGreen “POWER” Module has power Supply voltage is

34Table 11 – CADM TroubleshootingMiswired Module Indication Recommended Troubleshooting ActionGreen LED is not on,module does not power upDetermine if

35PERSONAL INJURY AND UNIT DAMAGEHAZARDFailure to follow this caution may result in personalinjury or equipment damage.Only approved cleaning is recom

365. Mix Totaline environmentally sound coil cleaner in a21/2gallon garden sprayer according to the instruc-tions included with the cleaner. The optim

37TROUBLESHOOTINGPROBLEM CAUSE REMEDYCompressor andOutdoor FanWill Not Start.Power failure. Call power company.Fuse blown or circuit breaker tripped.

38APPENDIX AAIR CONDITIONER AND HEAT PUMPWITH PURON®— QUICK REFERENCEGUIDES Puron® (R-410A) refrigerant operates at 50 percent to70 percent higher pre

39APPENDIX CLow Ambient Option — Factory InstalledUnits with the factory installed low ambient option areequipped with a MotormasterRsolid--state head

4C10675Fig. 2 -- 38AUQ*25 Unit Dimensions38AUQ

40Motormaster Sensor - Must be positionedon Vapor Stub(Fourth from Top)C10795Fig. 33 -- Motormaster Sensor Location:38AUQ*16Motormaster Sensor - Must

41C10363Fig. 35 -- Wind Baffles -- Fabrication38AUQ

42C10366Fig. 36 -- 15 Ton Wind Baffle Brackets -- Fabrication38AUQ

43RIGHTBACKLEFTFRONTBOTTOMBRACKETTOP BRACKETSC10367Fig. 37 -- Wind Baffle Installation — 15 Ton Units38AUQ

44RIGHTBACKLEFTFRONTC10368Fig. 38 -- Wind Baffle Installation — 20 Ton Units38AUQ

4538AUQ

46Copyright 2010 Carrier Corp. D 7310 W. Morris St. D Indianapolis, IN 46231 Printed in U.S.A. Edition Date: 08/10Manufacturer reserves the right to c

47START UP CHECKLISTI. PRELIMINARY INFORMATIONOUTDOOR: MODEL NO. SERIAL NO.INDOOR: AIRHANDLER MANUFACTURERMODEL NO. SERIAL NO.ADDITIONAL ACCESSORIESII

48CHECK VOLTAGE IMBALANCELINE-TO-LINE VOLTS: AB V AC V BC V(AB + AC + BC)/3 = AVERAGE VOLTAGE = VMAXIMUM DEVIATION FROM AVERAGE VOLTAGE = VVOLTAGE IMB

5Table 1A — Physical Data — 38AUQ*16-25 Units — 60 Hz EnglishUNIT SIZE 38AUQ* 16 25NOMINAL CAP ACITY (tons) 15 20REFRIGERANT SYSTEM‡Refrigerant PuronR

6Table 1B — Physical Data — 38AUQ*16-25 Units — 60 Hz SIUNIT SIZE 38AUQ* 16 25NOMINAL CAP ACITY (kW) 15 20REFRIGERANT SYSTEM‡Refrigerant PuronR(R---41

71 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 1838AUQA25A0C6–0A0A0Model Type Packaging38AU= Carrier Condensing UnitR--- 410A Refrigerant0=StandardType of

8Do not install the outdoor unit in an area where fresh airsupply to the outdoor coil may be restricted or whenrecirculation from the condenser fan di

9Table 2 – 38AUQ*16--25 Piping Recommendations (Two-Circuit Unit)R -410A Equivalent LengthModelNomi nal Capacit yLength Equiv 0-38 38-75 75-113 113-15