Carrier 38MAQB12R-3 User Manual

Specifications subject to change without notice.
Fig. 1 —Sizes 9K to 36K
NOTES: Read the entire instruction manual before starting the
installation.
Images are for illustration purposes only. Actual
models may differ slightly.
TABLE OF CONTENTS
PAGE
SAFETY CONSIDERATIONS........................................................2
INTRODUCTION ............................................................................3
ACCESSORIES................................................................................3
DIMENSIONS..................................................................................4
CLEARANCES ................................................................................7
INSTALLATION REQUIREMENTS .............................................8
INSTALLATION .............................................................................8
Step 1 - Check Equipment ................................................................8
Step 2 - Mount Unit ..........................................................................8
Step 3 - Condensate Drain Installation .............................................9
Step 4 - Refrigerant Piping ...............................................................10
Step 5 - Evacuate Coil And Tubing System .....................................13
Step 6 - Electrical Connections.........................................................14
WIRING ...........................................................................................14
ELECTRICAL DATA......................................................................15
CONNECTION DIAGRAMS ..........................................................15
START-UP .......................................................................................16
CARE AND MAINTENANCE........................................................16
TROUBLESHOOTING ...................................................................16
OUTDOOR UNIT DIAGNOSTIC GUIDES ...................................17
DUCTLESS START-UP CHECKLIST ...........................................18
Installation Instructions
38MA*R
Outdoor Unit Single Zone Ductless System
Sizes 09 to 36

Carrier 38MAQB12R-3 Specifications

General

Cooling Capacity	12, 000 BTU
Energy Efficiency Ratio (EER)	12.0
HSPF	10.0
Refrigerant	R-410A
Heating Capacity	13, 000 BTU
Type	Ductless Mini-Split
Power Supply	1 Phase, 60 Hz
Voltage (V)	208/230 V
Operating Temperature (Cooling)	5°F to 122°F
Outdoor Unit Noise Level	56 dB
SEER	22

Summary

Safety Considerations

Electrical, Explosion, and Damage Hazards

Covers warnings about electrical shock, explosion risks, and general equipment damage during installation and operation.

Clearance Requirements

Installation Requirements

Location, Product, and Environmental Guidelines

Installation Procedures

Step 1 & 2: Equipment Check and Unit Mounting

Step 3: Condensate Drain Installation

Step 4: Refrigerant Piping Installation

Details specifications, connections, flaring, and pressure testing for refrigerant piping.

Step 5: System Evacuation

Explains deep and triple vacuum methods to remove air and moisture from the refrigerant system.

Step 6: Electrical Connections and Wiring

Covers field wiring, electrical connections, wire sizing, and compliance with codes.

Operation and Troubleshooting

Start-Up Tests and System Checks

Troubleshooting Unit Faults with LEDs

Outdoor Unit Diagnostic Codes

Ductless Start-Up Checklist

Electrical and Wiring Verification

Start-Up Checklist - Continued

Piping and Evacuation Verification

Covers leak checks, evacuation methods, line set matching, and additional charge calculation.

Performance Testing and Error Code Review

Instructions for performance testing and recording any error codes found during start-up.