Carrier 38AUQ Manuel d'utilisateur télécharger pdf

Installation, Start-Up and

Service Instructions

CONTENTS

SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . . 1

INSTALLATION GUIDELINES. . . . . . . . . . . . . . . . . . . . . . . 2

INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-14

Step 1 – Plan for Unit Location . . . . . . . . . . . . . . . . . . . 7

Step 2 – Complete Pre-Installation Checks. . . . . . . . . . 7

Step 3 – Prepare Unit Mounting Support . . . . . . . . . . 7

Step 4 – Rig and Mount the Unit . . . . . . . . . . . . . . . . . . 7

Step 5 – Complete Refrigerant Piping Connections

. . . 7

Step 6 – Install Accessories. . . . . . . . . . . . . . . . . . . . . . 10

Step 7 – Complete Electrical Connections . . . . . . . . . 10

PRE-START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

System Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Turn On Crankcase Heater . . . . . . . . . . . . . . . . . . . . . . 15

Preliminary Charge. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

START-UP. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 -18

38AUQ Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

OPERATING SEQUENCE. . . . . . . . . . . . . . . . . . . . . . . . . . 19

Indoor (Supply) Fan. . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Cooling Unit Without Economizer . . . . . . . . . . . . . . . . . 19

Cooling, Unit With Economizer . . . . . . . . . . . . . . . . . . . 19

Heating. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Supplemental Heating/Emergency Heating . . . . . . . . 19

Defrost Cycle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Cooling and Heating Shutdown. . . . . . . . . . . . . . . . . 19

ROUTINE SYSTEM MAINTENANCE. . . . . . . . . . . . . . . 20

Quarterly Inspection (and 30 days after initial start)

. . 20

SERVICE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20 - 31

Refrigeration System . . . . . . . . . . . . . . . . . . . . . . . . . 20

Compressor Oil. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Servicing Systems on Roofs with

Synthetic Materials. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Liquid Line Filter Drier . . . . . . . . . . . . . . . . . . . . . . . . . 21

Filed Refrigerant Access Ports . . . . . . . . . . . . . . . . . 21

Outdoor Coil Metering Devices. . . . . . . . . . . . . . . . . 21

Refrigerant System Pressure Access Ports . . . . . . . . 21

Heat Pump Controls. . . . . . . . . . . . . . . . . . . . . . . . . . 22

Commercial Defrost Board . . . . . . . . . . . . . . . . . . . . . . 22

Crankcase Heater. . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Compressor Protection. . . . . . . . . . . . . . . . . . . . . . . . . . 22

Low-Pressure Switches . . . . . . . . . . . . . . . . . . . . . . . . . 33

Comfort Alert Diagnostic Module . . . . . . . . . . . . . . 28

Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Outdoor Coil Maintenance and Cleaning

Recommendations. . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Service Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Fastener Torque Values . . . . . . . . . . . . . . . . . . . . . . . 31

TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

APPENDIX A

Air Conditioner and Heat Pump with Puron

–

Quick Reference Guide . . . . . . . . . . . . . . . . . . . . . . . 33

APPENDIX B

Wiring Diagram List. . . . . . . . . . . . . . . . . . . . . . . . . 33

APPENDIX C

Motormaster Sensor Locations. . . . . . . . . . . . . . . . . 34

START-UP CHECKLIST . . . . . . . . . . . . . . . . . . . .CL-1, CL-2

SAFETY CONSIDERATIONS

Improper installation, adjustment, alteration, service,

maintenance, or use can cause explosion, fire, electrical shock

or other conditions which may cause personal injury or

property damage. Consult a qualified installer, service agency,

or your distributor or branch for information or assistance. The

qualified installer or agency must use factory-authorized kits or

accessories when modifying this product. Refer to the

individual instructions package

Follow all safety codes. Wear safety glasses and work gloves.

Use quenching cloths for brazing operations and have a fire

extinguisher available. Read these instructions thoroughly and

follow all warnings or cautions attached to the unit. Consult

local building codes and appropriate national electrical codes

(in USA, ANSI/NFPA70, National Electrical Code (NEC); in

Canada, CSA C22.1) for special requirements.

It is important to recognize safety information. This is the

safety-alert symbol . When you see this symbol on the unit

and in instructions or manuals, be alert to the potential for

personal injury.

Understand the signal words DANGER, WARNING,

CAUTION, and NOTE. These words are used with the safety-

alert symbol. DANGER identifies the most serious hazards

which will result in severe personal injury or death.

WARNING signifies hazards which could result in personal

injury or death. CAUTION is used to identify unsafe practices,

which may result in minor personal injury or product and

property damage. NOTE is used to highlight suggestions

which will result in enhanced installation, reliability, or

operation.

38AUQ

Heat Pump Condensing Units

60 Hz

with Puron

(R-410A) Refrigerant

Sizes 07, 08, and 12

1 2 3 4 5 6 ... 35 36

Résumé du contenu

Page 1 - Service Instructions

Installation, Start-Up andService InstructionsCONTENTSSAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . . 1INSTALLATION GUIDELINES. .

Page 2 - INSTALLATION GUIDELINE

10MAKE PIPING CONNECTIONS — Piping connections atthe 38AUQ unit are ball valves with stub tube extensions. Donot open the unit service valves until al

Page 3

11Field power wires are connected to the unit at line-side pres-sure lugs on compressor contactor C and TB1 (see wiring dia-gram label for control box

Page 4

12Fig. 10 — Convenience Outlet LocationNon-powered type: This type requires the field installation ofa general-purpose 125-volt 15-A circuit powered f

Page 5

13Press the gasket over the screw heads. Slip the backing plateover the screw heads at the keyhole slots and align with thegasket; tighten the two scr

Page 6 - 38AUQA12A0

14Table 8 — Electrical Data — 38AUQ*07-12 60 Hz UnitsLEGENDUNITSIZE38AUQFACTORY-INSTALLEDOPTIONNOMINALVOLTAGEVOLTAGERANGE‡COMPRESSOR FAN MOTORSPOWERSU

Page 7 - .INSTALLATION

15PRE-START-UPSystem Check1. Check all indoor section and other equipment auxiliarycomponents. Consult the manufacturer’s instructionsregarding any ot

Page 8

16Advanced Scroll Temperature Protection (ASTP) A label located above the terminal box identifies CopelandScroll compressor models that contain this t

Page 9

17Fig. 16 — 38AUQ*07 Charging ChartFig. 17 — 38AUQ*08 Charging ChartFig. 18 — 38AUQ*12 Charging Chart

Page 10 - Step 6 — Install Accessories

18Fig. 19 — 38AUQ Wiring Diagram (208/230-3-60 shown)

Page 11 - Convenience Outlets

19OPERATING SEQUENCEBase Unit Controls —Indoor (Supply) FanThe indoor fan contactor (IFC) is remotely located at the fancoil or fan section. If the th

Page 12 - Installing Weatherproof Cover

2INSTALLATION GUIDELINEReplacement /Retrofit – R22 to Puron®Split system heat pumps are intended to be installed withmatching indoor sections only. Th

Page 13 - (Note 4)

20ROUTINE SYSTEM MAINTENANCEThese items should be part of a routine maintenance program,to be checked every month or two, until a specific schedule fo

Page 14 - AB = 224 v

21Liquid Line Filter DrierThe factory-provided reversible filter drier is specifically de-signed to operate with Puron®. Replace the filter drier with

Page 15 - START-UP

22Heat Pump ControlsCompressor ProtectionCompressor OvercurrentThe compressor has internal limbered motor protection.Compressor OvertemperatureThe com

Page 16 - Final Checks

23Fig. 21 — Defrost Control Board (DFB) LocationFig. 22 — Defrost Control Board (DFB) ArrangementReversing valve control The DFB has two outputs for u

Page 17

24Defrost Thermostats These are temperature switches that monitor the surface tem-perature of the outdoor coil circuits. These switches are mount-ed o

Page 18

25Fig. 24 — 38AUQ*07 ExteriorFig. 25 — 38AUQ*07 InteriorFansServiceValvesLOCHPSHigh FlowAccess PortsOutdoor CoilDefrostThermostat(DFT)

Page 19 - OPERATING SEQUENCE

26Fig. 26 — 38AUQ*08 ExteriorFig.27 — 38AUQ*08 InteriorFansServiceValvesLOCHPSHigh FlowAccess PortsOutdoor CoilDefrostThermostat(DFT)

Page 20 - ROUTINE SYSTEM MAINTENANCE

27Fig. 28 — 38AUQ*12 ExteriorFig. 29 — 38AUQ*12 InteriorFansServiceValvesLOCHPSHigh FlowAccess PortsOutdoor CoilDefrostThermostat(DFT)

Page 21 - Outdoor Coil Metering Devices

28COMFORT ALERT DIAGNOSTIC MODULEThe Comfort Alert Diagnostic Module (CADM) monitors andanalyzes data from the Copeland Scroll® three-phase compres-so

Page 22 - Commercial Defrost Control

29Table 14 — LED Status CodesStatus LED Status LED Description Status LED Troubleshooting InformationGreen “POWER” Module has power Supply voltage is

Page 23 - ■ 0 ■ 0 ■■00■ Off

3Fig. 1 — 38AUQ*07-12 Unit DimensionsUNITStandardWeightCornerACornerBCornerCCornerDCenter of Gravity Unit Heightlbs. kg. lbs. kg. lbs. kg. lbs. kg. lb

Page 24 - Defrost Speedup Functions

30Table 15 — CADM TroubleshootingLubricationFAN MOTORS have sealed bearings. No provisions are madefor lubrication.COMPRESSOR has its own oil supply.

Page 25 - Fig. 25 — 38AUQ*07 Interior

31Clean coil as follows:1. Turn off unit power, tag disconnect.2. Remove top panel screws on outdoor coil end of unit.3. Remove coil corner post. To h

Page 26 - Fig.27 — 38AUQ*08 Interior

32TROUBLESHOOTINGPROBLEM CAUSE REMEDYCompressor andOutdoor FanWill Not Start.Power failure. Call power company.Fuse blown or circuit breaker tripped.

Page 27 - Fig. 29 — 38AUQ*12 Interior

33APPENDIX AAIR CONDITIONER AND HEAT PUMP WITHPURON® — QUICK REFERENCE GUIDE•Puron® (R-410A) refrigerant operates at 50 percent to70 percent higher pr

Page 28 - COMFORT ALERT DIAGNOSTIC

Page 29 - Table 14 — LED Status Codes

CL-1III. START UPSTART-UP CHECKLISTI. PRELIMINARY INFORMATIONOUTDOOR: MODEL NO. SERIAL NO.INDOOR: AIR HANDLER MANUFACTURERMODEL NO. SERIAL NO. ADDITIO

Page 30

Page 31 - FASTENER TORQUE VALUES

4Table 1A — Physical Data — 38AUQ*07-12 Units — 60 Hz EnglishUNIT SIZE 38AUQ *07 *08 *12NOMINAL CAPACITY (tons)67.510OPERATING WEIGHTS (lb)Aluminum-Fi

Page 32 - TROUBLESHOOTING

5Table 1B — Physical Data — 38AUQ*07-12 Units — 60 Hz SIUNIT SIZE 38AUQ *07 *08 *12NOMINAL CAPACITY (kW)21.1 26.4 35.1OPERATING WEIGHT (kg)Aluminum-Fi

Page 33 - APPENDIX B

6Fig. 2 — Model Number NomenclatureFig. 3 — Serial Number Nomenclature1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 1838AUQA12A0C6–0A0A0Model Type Packagi

Page 34 - APPENDIX C

7.INSTALLATIONJobsite SurveyComplete the following checks before installation.1. Consult local building codes and the NEC (NationalElectrical Code) AN

Page 35 - II. PRE-START-UP

8Table 2 — 38AUQ*07-12 Piping Recommendations (Single-Circuit Unit) CHECK VERTICAL SEPARATION — If there is any verticalseparation between the indoor

Page 36 - Catalog No: 38AUQ-01SI

9Table 5 — Refrigerant Specialties Part Numbers.INSTALL LIQUID LINE SOLENOID VALVE — It is recommended that a bi-directional solenoid valve beplaced i

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Carrier 38AUQ Manuel d'utilisateur

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