Master Bilt MAC-7 User Manual

MAC-7&8
Featuring Advanced Master Controller 3.2 Technology
Reverse Cycle Defrost
Installation & Operations Manual
December 2017 revision
©2015 Master-Bilt Products, an unincorporated division of Standex International Corporation.
All rights reserved.

Master Bilt MAC-7 Specifications

General

Brand	Master Bilt
Model	MAC-7
Category	Heat Pump
Language	English

Summary

Introduction and Support

Installation and Service Personnel

Emphasizes that installation/service must be done by qualified professionals.

Safety Warnings and Contact Information

Highlights risks of improper electrical hook-up and provides contact details for support.

Warning Labels and Safety Instructions

Safety Signal Words and Factory Labels

Defines signal words and the importance of factory labels.

Handling and Placement of Condensing Unit

Evaporator Coils and Controller Features

Remote Circuits and Refrigerant Lines

Refrigerant Line Sizing Guidelines

Provides guidelines and tables for proper refrigerant line sizing.

Evaporator Suction Outlet Temperature Sensor Location

Wiring Diagram and Electrical Details

Condensing Unit and Evaporator Wiring Diagram

Presents the wiring diagram for MAC units with reverse cycle defrost.

System Component Identification and Specifications

Lists part numbers and identifies key components and electrical specs.

Leak Check and Evacuation Procedure

Leak Check Procedure

Steps to perform a leak check on refrigeration line connections.

Evacuation and Dehydration Process

Outlines the process for evacuating the system to remove moisture.

Preliminary Refrigerant Charging Steps

Refrigerant Charging and System Operation

Refrigerant Charge Tables

Charging Procedure Troubleshooting

Over/Undercharge Indicators During Defrost

Drain Lines and Heater Installation

Final System Checks and Verification

Pressure and Temperature Setting Verification