Carrier 38AUZ- Manual

Carrier 38AUZ

Carrier 38AUZ– Manual, read for free online in PDF format. We hope this helps you resolve any issues you may have. If you have further questions, please contact us through the contact form.

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Table of Contents:

  • Page 2 – INSTALLATION GUIDELINE; Replacement /Retrofit – R22 to Puron
  • Page 6 – A U Z
  • Page 7 – INSTALLATION; Fig. 4 — Service Clearance Dimensional Drawing; CONSIDER SYSTEM REQUIREMENTS; UNIT DAMAGE HAZARD
  • Page 9 – Step 6 — Install Accessories; Field Power Supply —; UNIT OPERATION AND SAFETY HAZARD
  • Page 10 – Units Without Factory-Installed Disconnect —; Fig. 8 — Power Wiring Connections; Convenience Outlets —; FIRE HAZARD
  • Page 11 – Installing Weatherproof Cover –
  • Page 12 – Fig. 11 — Weatherproof Cover Installation; All Units —; Fig. 12 — Typical Remote Thermostat Connections
  • Page 17 – Fig. 20 — 38AU Wiring Diagram
  • Page 18 – OPERATING SEQUENCE; Base Unit Controls; ROUTINE SYSTEM MAINTENANCE; Quarterly Inspection (and 30 days after initial; Indoor section; Seasonal Maintenance; Air Conditioning
  • Page 19 – SERVICE; Comfort Alert Diagnostic Module; Input
  • Page 20 – Table 6 — LED Status Codes
  • Page 21 – Table 7 — CADM Troubleshooting
  • Page 22 – NOVATIONTM Coil Cleaning and Maintenance —; Fig. 21 — Pivot and Support Top Cover; Repairing NOVATION Condenser Tube Leaks; PERSONAL INJURY HAZARD
  • Page 23 – Fig. 22 — CoreMax Access Port Assembly; FASTENER TORQUE VALUES; Table 8 — Torque Values; TROUBLESHOOTING; SEAT
  • Page 25 – APPENDIX; AIR CONDITIONER AND HEAT PUMP WITH; warnings
  • Page 27 – I. PRELIMINARY INFORMATION; OUTDOOR UNIT
Loading the manual

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

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Summary

Page 2 - INSTALLATION GUIDELINE; Replacement /Retrofit – R22 to Puron

2 INSTALLATION GUIDELINE Replacement /Retrofit – R22 to Puron ® Replacement/retrofit installations require change-out of outdoor unit, metering device, and filter driers. Change-out of indoor coil (evaporator) and interconnecting tubing is recommended. Existing evaporator coil – If the existing evap...

Page 6 - A U Z

6 Fig. 2 — Model Number Nomenclature Fig. 3 — Serial Number Nomenclature 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 3 8 A U Z A 0 4 A 0 G 6 – 0 A 0 A 0 _____________ ____ Model Type Packaging 38AU= Carrier Condensing Unit Puron r R --- 410A Refrigerant 0 = Standard Type of Coil Electrical Options ...

Page 7 - INSTALLATION; Fig. 4 — Service Clearance Dimensional Drawing; CONSIDER SYSTEM REQUIREMENTS; UNIT DAMAGE HAZARD

7 . INSTALLATION Jobsite Survey Complete the following checks before installation. 1. Consult local building codes and the NEC (National Electrical Code) ANSI/NFPA 70 for special installation requirements. 2. Determine unit location (from project plans) or select unit location. 3. Check for possible...

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