Magic-Pak MGE4 Series User Manual

507858-01 Issue 1922 Page 1 of 21
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INSTALLATION AND MAINTENANCE INSTRUCTIONS
MGE4 Series
Gas Heating with Electric Cooling Unit
Manufactured By
Allied Air Enterprises LLC
A Lennox International Inc. Company
215 Metropolitan Drive
West Columbia, SC 29170
This is a safety alert symbol and should never be ignored. When you see this symbol on labels or in
manuals, be alert to the potential for personal injury or death.
Improper installation, adjustment, alteration, service, or
maintenance can cause injury or property damage. Refer
to this manual. For assistance or additional information,
consult a qualied installer or service agency.
WARNING
The installation of this appliance must conform to the requirements of the National Fire Protection Association; the National
Electrical Code, ANSI/NFPA No. 70 (latest edition) in the United States; the Canadian Electrical Code Part 1, CSA 22.1
(latest edition) in Canada; and any state or provincial laws or local ordinances. Local authorities having jurisdiction should
be consulted before installation is made. Such applicable regulations or requirements take precedence over the general
instructions in this manual.
CAUTION
*P507858-01*
(P) 507858-01
Table of Contents
Installation ...................................................................1
Start-Up .....................................................................15
Operation ...................................................................15
Maintenance ..............................................................17
Accessories ...............................................................18
Wiring Diagrams ........................................................20
Installation
These units are not approved for mobile home
applications. Such use could result in property damage,
personal injury, or death.
WARNING
General
These instructions explain the recommended method of
installation of the MGE4 gas heating with electric cooling
unit and associated electrical wiring.
The MGE4 series are self-contained, gas-red heating with
electric cooling models with optional CLIMATE GUARD™
coated coils. The unit design has been certied by Intertek
Testing Services for compliance with the latest edition of
the American National Standard – ANSI Z21.47/National
Standard of Canada – CAN/CGA-2.3 for direct vent
central furnaces. The MGE4 models are certied to be in
compliance with the latest edition of A.R.I. Standard 390.
All models are design certied for heating operation when
red with natural or propane gas. Units must be equipped
to use the fuel type provided in the eld.

Magic-Pak MGE4 Series Specifications

General

Brand	Magic-Pak
Model	MGE4 Series
Category	Gas Heater
Language	English

Summary

Installation Overview

General Installation Guidelines

Explains recommended installation of the MGE4 gas heating with electric cooling unit.

Installation Requirements and Limitations

Inspection and Application Limits

Inspect equipment for damage and confirm specifications; observe application limitations.

Unit Location and Wall Sleeve Installation

Wall Sleeve and Louver Grille Setup

Refer to instructions for wall sleeve and louver grille assembly and installation.

Venting System Requirements

Venting system is integral and must not be modified beyond specified instructions.

Vent Pipe Installation Procedures

Vent Pipe Extension Sizing

Determine vent pipe extension length based on wall sleeve accessory installed.

Securing Unit to Wall Sleeve

Using Installation Brackets

Use installation brackets to secure the unit to the wall sleeve for proper fit.

Ductwork Design and Connections

Ductwork Sizing and Sealing

Design ductwork per ACCA methods; use flexible joints and seal return ducts to unit casing.

Air Filter and Condensate Management

Air Filter Maintenance and Sizing

Guidelines for cleaning or replacing air filters and sizing disposable filters.

Condensate Drain Installation

Proper setup for draining the outdoor unit's drain pan.

Electrical and Gas Connection Guidelines

Electrical Wiring Standards

Wiring must meet NEC/CSA codes; use correct voltage and grounding for safety.

Gas Supply Piping and Leak Testing

Install gas piping per codes, check for leaks, and verify gas type.

Thermostat Setup and Initial Startup

Thermostat Placement and Wiring

Locate thermostat on an inside wall; use specified wires for connection.

Pre-Lighting Safety and Burner Ignition

Safety checks before lighting and detailed steps for burner ignition.

Unit Operation and Shutdown Procedures

Heating Mode Operation

How to operate the unit for heating, including the sequence of operation.

Cooling Mode Operation

How to operate the unit for cooling.

Temporary and Prolonged Shutdown

Procedures for safely shutting down the unit for various periods.

Heating System Adjustments and Checks

Temperature Rise and Gas Input Adjustment

Adjust temperature rise and gas input/pressure per rating plate specifications.

Cooling System Wiring Check

Cooling system requires no adjustments; check wiring for looseness or missing connections.

Blower System Operation and Safety

Blower Speed Control and Fan Delays

Blower operation based on thermostat and factory-set fan delays.

Safety Limit Controls Overview

Explanation of limit control and rollout switch functions for unit safety.

Cold Weather Operation Precautions

Preventing Vent Icing Issues

Precautions for extremely cold weather to prevent vent system ice blockage.

Scheduled Maintenance Procedures

Heating System Components

Cleaning and maintenance for burners, orifices, and heat exchanger.

Filter and Cooling Coil Cleaning

Procedures for cleaning air filters and the condenser cooling coil.

High Altitude Installation Guidelines

Altitude Performance Data

Approved operation altitudes and relevant performance data for various elevations.

Optional Installation Accessories

Wall Sleeve Kit Selection Guide

Details on various wall sleeve kits and their corresponding dimensions.

Louver and Conversion Kit Options

Available Louver Kits

Information on polypropylene and aluminum louver kits compatible with MGE4 units.

Propane Conversion Kit Information

Details on kits required for converting the unit to propane fuel.

Unit Wiring Diagrams

Wiring for 3/4 Ton to 2 Ton Models

Wiring diagram illustrating connections for specific unit tonnage ranges.

Unit Wiring Diagrams

Wiring for 2-1/2 Ton to 3 Ton Models

Wiring diagram illustrating connections for specific unit tonnage ranges.