Carrier 38MGQD27 3 Series User Manual

38MGQ
Multi-Zone Ductless System
Sizes 18, 27, 36 and 48
Installation Instructions
NOTE: Read the entire instruction manual before starting the installation.
NOTE: Image for illustration purposes only. Actual model may be
slightly different.
TABLE OF CONTENTS
PAGE
SAFETY CONSIDERATIONS 2.........................
GENERAL 2.........................................
PARTS LIST 3........................................
SYSTEM REQUIREMENTS 4...........................
PIPING REQUIREMENTS 4............................
DIMENSIONS 6......................................
CLEARANCES 10....................................
INSTALLATION GUIDE 11.............................
INSTALLATION TIPS 11...............................
OUTDOOR UNIT INSTALLATION 11....................
ELECTRICAL DATA 12...............................
CONNECTION DIAGRAMS 13.........................
START−UP 17........................................
OUTDOOR UNIT DIAGNOSTIC GUIDES 17..............

Carrier 38MGQD27 3 Series Specifications

General

Brand	Carrier
Model	38MGQD27 3 Series
Category	Heat Pump
Language	English

Summary

SAFETY CONSIDERATIONS

ELECTRICAL SHOCK HAZARD

Warning about electrical shock during installation or servicing.

EQUIPMENT DAMAGE HAZARD

Cautionary note on potential equipment damage from improper installation or operation.

GENERAL

Overview of installation, start-up, and servicing procedures.

PARTS LIST

SYSTEM REQUIREMENTS

PIPING REQUIREMENTS

Details on refrigerant line sizing, insulation, and lengths.

Wiring

Communication Wiring

Guidelines for shielded, 600V copper wire for communication.

DIMENSIONS – OUTDOOR

CLEARANCES – OUTDOOR

INSTALLATION GUIDE

INSTALLATION TIPS

Advice on ideal locations for outdoor unit installation.

OUTDOOR UNIT INSTALLATION

Steps for installing the outdoor unit base and connections.

MAKE REFRIGERANT PIPING CONNECTIONS (OUTDOOR UNIT)

Procedures for connecting refrigerant piping.

INSTALL ALL POWER AND INTERCONNECTING WIRING TO OUTDOOR UNIT

ELECTRICAL DATA

CONNECTION DIAGRAMS

DRAIN CONNECTIONS

Install the outdoor unit drain joint

How to install the drain joint and connect the hose.

SYSTEM VACUUM AND CHARGE

Deep Vacuum Method

Procedure for deep vacuum evacuation of the system.

Triple Evacuation Method

Alternative method for system evacuation using nitrogen.

Final Tubing Check

Verifying tubing security and absence of rubbing.

START-UP

Test Operation

Performing post-installation operational tests.

SYSTEM CHECKS

Final checks before operating the unit.

OUTDOOR UNIT DIAGNOSTIC GUIDES