Carrier 38AUZ User Manual download pdf

Installation, Start-Up and

Service Instructions

CONTENTS

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

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

INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-13

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 . . . . . . . . . . . . . . . . . . . . . 9

Step 7 – Complete Electrical Connections . . . . . . . . . . 9

PRE-START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

System Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Turn On Crankcase Heater . . . . . . . . . . . . . . . . . . . . . . 14

Preliminary Charge. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

START-UP. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 -18

38AUZ Units. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

OPERATING SEQUENCE. . . . . . . . . . . . . . . . . . . . . . . . . . 18

Cooling. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Heating. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

ROUTINE SYSTEM MAINTENANCE. . . . . . . . . . . . . . . 18

Quarterly Inspection (and 30 days after initial start) . 18

Seasonal Maintenance . . . . . . . . . . . . . . . . . . . . . . . . 18

SERVICE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19 - 23

Comfort Alert Diagnostic Module. . . . . . . . . . . 19 - 21

Crankcase Heater . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Compressor Protection. . . . . . . . . . . . . . . . . . . . . . . . . . 21

Low-Pressure Switches . . . . . . . . . . . . . . . . . . . . . . . . . 21

High-Pressure Switches . . . . . . . . . . . . . . . . . . . . . . . . . 21

Outdoor Fans. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

NOVATION™ Coil Cleaning and Maintenance . . . . 22

Repairing NOVATION Condenser Tube Leaks. . . . . 22

Replacing NOVATION Condenser Coil . . . . . . . . . . 22

Field Refrigerant Access Ports . . . . . . . . . . . . . . . . . 22

Factory High-Flow Access Ports. . . . . . . . . . . . . . . . 22

Fastener Torque Values . . . . . . . . . . . . . . . . . . . . . . . 23

TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . 23, 24

APPENDIX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Air Conditioner and Heat Pump with Puron® —

Quick Reference Guide . . . . . . . . . . . . . . . . . . . . . . . 25

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.

38AUZ

Air-Cooled Condensing Units

60 Hz

with Puron

(R-410A) Refrigerant

Sizes 07, 08, 12, 14

1 2 ... 28

Summary of Contents

Page 1 - Service Instructions

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

Page 2 - INSTALLATION GUIDELINE

10leads according to required operation of the convenience outlet.If an always-energized convenience outlet operation is desired,connect the source le

Page 3

11Fig. 9 — Convenience Outlet LocationNon-powered type: This type requires the field installation ofa general-purpose 125-volt 15-A circuit powered fr

Page 4

12Fig. 11 — Weatherproof Cover InstallationAll Units —Voltage to compressor terminals during operation must bewithin voltage range indicated on unit n

Page 5

13Table 5 — Electrical Data — 38AUZ*07-14 60 Hz UnitsLEGENDUNITSIZE38AUFACTORY-INSTALLEDOPTIONNOMINALVOLTAGEVOLTAGERANGE*COMPRESSORFAN MOTORS(Qty 2)PO

Page 6 - 6 – 0 A 0 A 0

14PRE-START-UPSystem Check1. Check all air handler(s) and other equipment auxiliarycomponents. Consult the manufacturer’s instructionsregarding any ot

Page 7 - INSTALLATION

15ADVANCED SCROLL TEMPERATURE PROTECTION(ASTP) — Advanced Scroll Temperature Protection (ASTP)is a form of internal discharge temperature protection,

Page 8 - 38AUZ*07-14 60 Hz Units

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

Page 9 - Step 6 — Install Accessories

17Fig. 19 — 38AUZ*14 Charging ChartFig. 20 — 38AU Wiring Diagram

Page 10 - Convenience Outlets —

18OPERATING SEQUENCEBase Unit ControlsIndoor (Supply) FanThe indoor fan contactor (IFC) is remotely located at the fancoil or fan section. If the ther

Page 11

19SERVICEComfort Alert Diagnostic ModuleThe Comfort Alert Diagnostic Module (CADM) monitors andanalyzes data from the Copeland Scroll® three-phase com

Page 12 - (Note 3)

2INSTALLATION GUIDELINEReplacement /Retrofit – R22 to Puron®Replacement/retrofit installations require change-out ofoutdoor unit, metering device, and

Page 13

20Table 6 — LED Status CodesStatus LED Status LED Description Status LED Troubleshooting InformationGreen “POWER” Module has power Supply voltage is p

Page 14 - START-UP

21Table 7 — CADM TroubleshootingCrankcase Heater — The heater prevents refrigerantmigration and compressor oil dilution during shutdown when-ever comp

Page 15 - Protection Label

22NOVATION™ Coil Cleaning and Maintenance — To clean the NOVATION condenser coil, chemicals are NOTto be used; only water is approved as the cleaning

Page 16

23Fig. 22 — CoreMax Access Port AssemblyFASTENER TORQUE VALUESTable 8 — Torque ValuesTROUBLESHOOTINGCompressor mounting bolts 65–75 in–lbs (734–847 N–

Page 17 - Fig. 20 — 38AU Wiring Diagram

24TROUBLESHOOTING (cont)PROBLEM SOLUTIONCOMPRESSOR CYCLES ON LOW-PRESSURE SWITCHIndoor-Air Fan Running1. Liquid line solenoid valve(s) fails to open.

Page 18 - ROUTINE SYSTEM MAINTENANCE

25APPENDIXAIR CONDITIONER AND HEAT PUMP WITHPURON® — QUICK REFERENCE GUIDE•Puron® (R-410A) refrigerant operates at 50 percent to70 percent higher pres

Page 19

Page 20 - Table 6 — LED Status Codes

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

Page 21

Page 22

3Fig. 1 — 38AUZ*07-14 Unit DimensionsUNITStandardWeightCornerACornerBCornerCCornerDCenter of Gravity Unit Heightlbs. kg. lbs. kg. lbs. kg. lbs. kg. lb

Page 23 - TROUBLESHOOTING

4Table 1A — Physical Data — 38AUZ*07-14 Units — 60 Hz EnglishUNIT SIZE 38AU Z*07Z*08Z*12Z*14NOMINAL CAPACITY (tons)6 7.5 10 12.5OPERATING WEIGHT (lb)A

Page 24 - TROUBLESHOOTING (cont)

5Table 1B — Physical Data — 38AUZ*07-14 Units — 60 Hz SIUNIT SIZE 38AU Z*07 Z*08 Z*12 Z*14NOMINAL CAPACITY (kW)21.1 26.4 35.1 44OPERATING WEIGHT (kg)A

Page 25 - APPENDIX

6Fig. 2 — Model Number NomenclatureFig. 3 — Serial Number Nomenclature1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 183 8 A U Z A 0 4 A 0G6 – 0 A 0 A 0___

Page 26 - Catalog No: 38AU-01SI

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

Page 27 - II. PRE-START-UP

8in the liquid line. Refer to the indoor unit installationinstructions for additional details.Determine equivalent line length adjustments for path an

Page 28

9Table 4 — Refrigerant Specialities Part Numbers.Fig. 5 — Location of Sight Glass(es)and Filter DriersFig. 6 — Typical Piping Connection AssemblyPress

Comments to this Manuals

No comments

Carrier 38AUZ User Manual

Browse online or download User Manual for Conditioners Carrier 38AUZ. Carrier 38AUZ User Manual

Summary of Contents

Comments to this Manuals

Related products and manuals for Conditioners Carrier 38AUZ