Carrier 38MURAQ30AA3 User Manual

Specifications subject to change without notice.
Fig. 1 —Sizes 18K, 18K HH, 24K, 24K HH, 30K,
30K HH, 36K
Fig. 2 —Sizes 36K HH, 48K, 48K HH, 60K, 60K HH
NOTES: Read the entire instruction manual before starting the
installation. Images are for illustration purposes only.
Actual models may differ slightly. HH Denotes High Heat
Models.
TABLE OF CONTENTS
PAGE
SAFETY CONSIDERATIONS........................................................2
MODEL NUMBER AND ACCESSORIES.....................................3
DIMENSIONS..................................................................................4
CLEARANCES ................................................................................8
INSTALLATION REQUIREMENTS .............................................9
INSTALLATION .............................................................................9
Step 1 - Check Equipment ................................................................9
Step 2 - Mount Unit ..........................................................................9
Step 3 - Condensate Drain Installation .............................................10
Step 4 - Operating Ambient..............................................................10
Step 5 - Refrigerant Piping Connections ..........................................10
Step 6 - Electrical Connections - Dip Switch Configuration............13
Step 7 - Evacuate Coil And Tubing System .....................................15
ELECTRICAL DATA......................................................................16
24V CONNECTION DIAGRAMS ..................................................16
START-UP .......................................................................................18
CARE AND MAINTENANCE........................................................18
TROUBLESHOOTING ...................................................................18
OUTDOOR UNIT DIAGNOSTIC GUIDES ...................................19
CROSSOVER SOLUTIONS............................................................20
Installation Instruction
38MURA
Residential Single Zone Heat Pump System
Sizes 18 to 60

Carrier 38MURAQ30AA3 Specifications

General

Model	38MURAQ30AA3
Type	Heat Pump
Refrigerant	R-410A
Voltage	208/230
Phase	1
Compressor Type	Inverter
Cooling Capacity (BTU/h)	30000
Heating Capacity (BTU/h)	30000

Summary

Safety Considerations

Electrical Shock Hazard

Warns about electrical shock hazard during installation and servicing.

Explosion Hazard

Clearances

Installation Requirements

Product Installation

Warns about hazards of improper installation by unqualified personnel.

Installation

Step 1 - Check Equipment

Step 2 - Mount Unit

Step 3 - Condensate Drain Installation

Step 5 - Refrigerant Piping Connections

Warning

Emphasizes using specific tubing and proper installation for warranty and safety.

Caution Do Not Deform Pipe While Cutting

Step 6 - Electrical Connections - Dip Switch Configuration

Install All Power and Interconnecting Wiring to Outdoor Units

Instructions for wiring power and communication lines to the outdoor unit.

Warning

Wiring

Caution

Warning Equipment Damage Hazard

Caution Equipment Damage Hazard

Step 7 - Evacuate Coil And Tubing System

Caution Unit Damage Hazard

Caution against using the system compressor as a vacuum pump.

Start-Up

Test Operation

Instructions for performing a test operation after installation checks are complete.

System Checks

Troubleshooting

Outdoor Unit Diagnostic Guides