Carrier 38MHR series - User Manual

Installation Instructions
38MHR
Outdoor Unit Single Zone Ductless System
Sizes 09 to 24
NOTE: Read the entire instruction manual before starting the
installation.
TABLE OF CONTENTS
PAGE
SAFETY CONSIDERATIONS 2.........................
PARTS LIST 3.......................................
SYSTEM REQUIREMENTS 4...........................
DIMENSIONS − OUTDOOR 5..........................
CLEARANCES − OUTDOOR 8.........................
INSTALLATION TIPS 9................................
OUTDOOR UNIT INSTALLATION 9.....................
ELECTRICAL DATA 11...............................
CONNECTION DIAGRAMS 11.........................
SYSTEM VACUUM AND CHARGE 12...................
START−UP 13........................................
OUTDOOR UNIT DIAGNOSTIC GUIDES 13..............

Summary

Safety Considerations

Hazard Warnings and Cautions

Details electrical shock, explosion hazards, and equipment damage risks with specific precautions.

System Requirements

Piping and Refrigerant Specifications

Electrical Wiring Requirements

Installation Tips and Best Practices

Refrigerant Piping Connections

Instructions for making refrigerant piping connections, including cutting and flaring pipes.

Outdoor Unit Wiring and Drain Connections

Electrical Data and Connection Diagrams

System Vacuum and Refrigerant Charge

Deep Vacuum Method

Procedure for achieving a 500-micron vacuum for system evacuation.

Triple Evacuation Method

Alternate method for system evacuation using nitrogen and vacuum pump.

Start-Up Procedures and Diagnostics

System Checks and Test Operation

Outdoor Unit Diagnostic Codes

Carrier 38MHR series Specifications