Marvair MGA1072A User Manual

MODELS:
MAA1018A-MAA1060A, MGA1072A
(Single Stage)
MAA2060A-MGA2072A
(2-Stage)
Installation & Operation Manual
11 EER Vertical Wall-Mount Air Conditioners
Manufactured By:
A Division of the AIRXCEL
®
Commercial Group
P.O. Box 400 • Cordele, Georgia 31010 • 156 Seedling Drive • Cordele, Georgia 31015
(229) 273-3636 • Fax (229) 273-5154
E-mail: marvairsales@airxcel.com • Internet: www.Marvair.com
The most current version of this manual can be found at www.Marvair.com.
IMPORTANT
This manual may include information for options and features which may not be
included on the unit being installed. Refer to the unit data label or Model Identication
to determine which features and options this unit is equipped with.
INSTALLER: Afx the instructions on the inside of the building adjacent to the thermostat.
END USER: Retain this manual for future reference.
Marvair MAA/MGA Wall Mount AC Installation & Operation Manual
02/2021 Rev.13
Air Conditioner Product Manual
Vertical Wall-Mount Air Conditioners
with Front Control Box Panel

Marvair MGA1072A Specifications

General

Model	MGA1072A
Type	Air Conditioner
Voltage	208/230V
Phase	3
Refrigerant	R-410A
Compressor Type	Scroll
EER	11.0
Power Supply	60 Hz
Cooling Capacity	72, 000 BTU/h

Summary

How To Use This Manual

Important Safety Precautions

Key safety guidelines before operating or servicing the unit.

Chapter 2 Electronic Control Board

Sequence of Operation

Chapter 3 Installation

Equipment Inspection

Instructions for inspecting units for shipping damage and component parts.

Installation Requirements

Covers general requirements, noise, drainage, placement, and airflow for unit installation.

Porting and Duct Work

Electrical Connections

Covers high voltage wiring, dual unit phasing, and low voltage thermostat wiring.

Chapter 4 Start-Up

Check-Out of Cooling Cycle

Procedure for verifying proper operation of the cooling cycle.

Check-Out of Heating Cycle

Procedure for verifying proper operation of the heating cycle.

Chapter 5 Troubleshooting

Failure Symptoms Guide

Lists common problems, likely causes, and corrections for unit operation.

Compressor Troubleshooting

Provides electrical tests for diagnosing compressor issues.

Control Board Diagnosis

Explains how to diagnose faults using the control board's LED indicators.

Chapter 6 Maintenance

Scheduled Maintenance

Chapter 8 Start-Up Check List

Start-Up & Commissioning Form

APPENDIX A: Installation Instructions for Field Installed Electric Heat