Nordyne M1MA 056 User Manual

For installation in:
1. Manufactured Homes
2. Recreational Vehicles, Park Models,
Manufactured Buildings
3. Modular Homes/Buildings
WARNING:
If the information in this manual is not
followed exactly, a fi re or explosion
may result causing property damage,
personal injury or loss of life.
– Do not store or use gasoline or
other fl ammable vapors and liquids
in the vicinity of this or any other
appliance.
– WHAT TO DO IF YOU SMELL GAS
• Do not try to light any appliance.
• Do not touch any electrical switch;
do not use any phone in your build-
ing.
• Immediately call your gas supplier
from a neighbor’s phone. Follow the
gas supplier’s instructions.
• If you cannot reach your gas sup-
plier, call the fi re department.
– Installation and service must be
performed by a qualifi ed installer,
service agency or the gas sup-
plier.
WARNING:
Should overheating occur, or the gas
supply fail to shut off, shut off the man-
ual gas valve to the appliance before
shutting off the electrical supply.
WARNING:
Improper installation, adjustment,
alteration, service or maintenance
can cause injury or property damage.
Refer to this manual. For assistance
or additional information consult a
qualifi ed installer, service agency or
the gas supplier.
Owners Manual/Installation Instructions
Series M1B, M1G, M1M and M1S
Downfl ow, Direct Vent (Sealed Combustion)
Forced Air Gas and Oil Furnaces
LEAVE THESE INSTRUCTIONS WITH THE HOMEOWNER.

Nordyne M1MA 056 Specifications

General

Brand	Nordyne
Model	M1MA 056
Category	Furnace
Language	English

Summary

Installation

Floor and Fuel Line Opening Cut-Out

Ceiling and Roof Opening Cut-Out

Installation of Transit-Mode Venting System

Factory Installation for Transit-Mode Venting

On-Site Transit-Mode Venting Installation

Electrical Wiring

Power Supply Wiring Connection

Instructions for connecting the main power supply wires to the furnace.

Thermostat Wiring Connection

Details on connecting thermostat wires to the furnace control system.

Fuel Piping

Gas Piping Installation

Oil Tank and Piping Installation

Lighting and Shutdown General-All Models

Pre-Lighting Safety Information

Critical safety precautions to follow before attempting to light the furnace.

Standing Pilot Lighting Instructions

Detailed steps for lighting the furnace pilot light.

Operating Instructions for Oil and Gas Gun Furnace

Oil Gun Furnace Operation

Gas Gun Furnace Operation

Service Guide

Burner Adjustment Procedures

Details factory settings and required checks for burner adjustments.

Gas Pressure & Pilot Flame Adjustment

Explains how to check and adjust gas pressure and pilot flame.

Combustion Air

Gas Gun Combustion Air Adjustment

Gas Conversion

Gas Conversion for Atmospheric & Direct Ignition Furnaces

Troubleshooting Standing Pilot Models

Troubleshooting: Main Burner Failure

Lists checks for when the main burner fails to ignite.

Troubleshooting: Gas Valve Powered, No Flame

Troubleshoots issues where the gas valve is powered but no main flame appears.

M1M Series Control Module Status

M1B Control Module Status

M1S* Series Control Module Status

Honeywell R7184 Indicator Lights

Explains the indicator lights for Honeywell R7184 oil primary control.

Beckett 7505 Indicator Lights

Describes the light indicators for the Beckett 7505 oil primary control.

Troubleshooting Direct Ignition Furnaces Including Gas Gun

Troubleshooting: Burner Motor Failure

Troubleshooting steps for when the burner motor does not run during a heat call.

Troubleshooting: Blower Runs, No Flame

Diagnosis for situations where the combustion blower operates but no flame is present.

Troubleshooting: Ignitor Not Heating

Steps to diagnose why the ignitor is not heating up when the control module is powered.

Troubleshooting: Flame Lockout After Ignition

Explains reasons for burner lockout after ignition, such as grounding or air adjustment.

Oil Gun Furnace Troubleshooting

Oil Gun: Burner Fails to Start

Oil Gun: Burner Safety Lockout

Maintenance

Homeowner Maintenance Tasks

Serviceman Periodic Maintenance

Wiring Diagrams Overview

M1GH 056/070 Gas Atmospheric Furnace Wiring

Induced Draft Furnace Wiring

M1GH 077/090 Induced Draft Furnace Wiring

A/C Ready Gas Furnace Wiring

M1G (B,C,D) 056/070 A/C Ready Wiring

A/C Ready Induced Draft Furnace Wiring

M1G (B,C,D) 077/090 A/C Ready Wiring

Direct Ignition Furnace Wiring

M1M Series Direct Ignition Wiring

Furnace Series Wiring Diagrams

M1(S,B) Gas & Oil Furnace Wiring

High Altitude Orifice Size Charts