Nordyne M1MA 070 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 070 Specifications

General

BTU	70, 000
Fuel Type	Natural Gas
Efficiency	80% AFUE
Input Voltage	115V
Weight	120 lbs
Blower Motor Type	PSC
Gas Type	Convertible to LP

Summary

MANUFACTURER WARRANTY, OWNER'S RESPONSIBILITIES

INSTALLATION STANDARDS

MINIMUM CLEARANCES

ROOF JACK SELECTION

DUCT CONNECTOR SELECTION

INSTALLATION

Cut Out Floor Opening & Fuel Line Hole

Instructions for creating floor openings for duct connectors and fuel lines.

Cut Out Ceiling and Roof Openings

Instructions for cutting openings in the ceiling and roof for the roof jack assembly.

Cut Duct Opening (Finger Tabbed Only)

Install Furnace Mounting Plate

Installing Platinum Series 14" Round Duct Connector

Installing Screw Down Duct Connector

Installing Finger Tabbed Duct Connectors

Install Furnace

Procedure for placing and securing the furnace onto the duct connector and mounting plate.

Install Roof Jack

Detailed steps for installing the roof jack assembly, including sealing and connections.

INSTALLATION OF TRANSIT-MODE VENTING SYSTEM

Manufactured Home Factory

Manufactured Home Site

ELECTRICAL WIRING

Connect Power Supply Wires

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

Connect Thermostat Wires

Instructions for connecting the low-voltage thermostat wires to the furnace.

FUEL PIPING

Oil Tank and Piping Installation

Recommendations for oil tank and piping installation, including capacity and connection.

Fuel Line Hook-Up: One Line System

Fuel Line Hook-Up: Two Line System

Hook-Up Procedure (See Figure 27)

How to Eliminate Air Leaks

LIGHTING AND SHUTDOWN GENERAL-ALL MODELS

Safety Information for Your Safety Read Before Lighting

Crucial safety information to be read before attempting to light the furnace.

Lighting Instructions for Standing Pilot Models.

Step-by-step guide for lighting furnaces equipped with a standing pilot.

To Turn Off Gas to Appliance:

Procedure for safely turning off the gas supply to the appliance.

Sequence of Operation for Standing Pilot

Describes the operational sequence for furnaces with a standing pilot ignition.

SEQUENCE OF OPERATION FOR STANDING PILOT W/INDUCED DRAFT BLOWERS MODELS

GENERAL-DIRECT IGNITION MODELS

Operating Instructions for M1M Models with Direct Ignition:

Operating instructions for M1M models featuring direct ignition systems.

Sequence of Operation for M1M Models with Direct Ignition

OPERATING INSTRUCTIONS FOR OIL AND GAS GUN FURNACE:

Oil Gun Model

Sequence of Operation for Oil Gun Models

Gas Gun Models

Sequence of Operation for Gas Gun Models

TO TURN OFF GAS/OIL APPLIANCE:

SERVICE GUIDE

BURNER ADJUSTMENTS

Procedures for checking and readjusting burner settings and gas pressure.

COMBUSTION AIR

Gas Gun

Oil Gun Only

Electrode Setting (Oil Gun Only)

Switching the Honeywell R7184 Ignition Control between Interrupted and Intermittent Duty (Oil Gun Only)

GAS CONVERSION

ATMOSPHERIC AND DIRECT IGNITION FURNACES

Procedure for converting atmospheric and direct ignition furnaces from natural to LP gas.

TROUBLESHOOTING

STANDING PILOT MODELS

Troubleshooting steps for standing pilot models when the main burner does not come on.

Gas Valve Powered (24 volts)- No Main Flame

Control Module Status Indicators - M1M Series

Control Status

Flame Status

Control Module Status Indicator - M1B

Control Module Status Indicator - M1S* Series

Honeywell R7184 Control:

Beckett 7505 Control:

Pilot Will Not Light or Goes Out

Main Flame Is Not Burning Properly

TROUBLESHOOTING DIRECT IGNITION FURNACES INCLUDING GAS GUN

Burner Motor Does Not Run- Thermostat Calls For Heat

Troubleshooting steps when the burner motor does not run despite a thermostat call.

Combustion Blower Does Run - No Flame

Troubleshooting steps when the combustion blower runs but there is no flame.

TROUBLESHOOTING - OIL GUN

Burner does not start with a call for heat.

Troubleshooting steps when the burner fails to start with a call for heat.

Burner Locks Out on Safety

Troubleshooting steps when the burner starts but locks out on safety due to indicator light patterns.

MAINTENANCE

By Homeowner

By Serviceman

WIRING DIAGRAMS