Nordyne M1MB 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 M1MB 056 Specifications

General

Model	M1MB 056
Heating Capacity	56, 000 BTU/h
Efficiency Rating	80% AFUE
Blower Type	Multi-speed
Fuel Type	Natural Gas
Input BTU/h	56, 000
Voltage	115V
Stages	Single Stage
Vent Size	4"
Type	Upflow/Horizontal Furnace

Summary

SPECIFICATIONS

INSTALLATION STANDARDS

General Safety Precautions

INSTALLATION

Cut Out Floor Opening and Fuel Line Hole

INSTALLATION OF TRANSIT-MODE VENTING SYSTEM

Transit-Mode Venting System Installation

ELECTRICAL WIRING

Electrical Safety and Wiring Precautions

FUEL PIPING

Fuel Piping Sizing and Installation

LIGHTING AND SHUTDOWN GENERAL-ALL MODELS

Safety Information Before Lighting Furnace

Crucial safety warnings and actions to take if gas is smelled before lighting.

Lighting Instructions for Standing Pilot Models

Step-by-step guide for lighting standing pilot models, including safety checks.

Turn Off Gas To Appliance

Sequence of Operation for Standing Pilot

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

Operating Instructions for M1M Models with Direct Ignition

OPERATING INSTRUCTIONS FOR OIL AND GAS GUN FURNACE

Oil Gun Model Operating Instructions

Sequence of Operation for Oil Gun Models

Gas Gun Model Operating Instructions

Sequence of Operation for Gas Gun Models

Turn Off Gas/Oil Appliance

SERVICE GUIDE BURNER ADJUSTMENTS

Burner Adjustment Procedures

Covers checking and adjusting gas pressure and pilot flame for optimal performance.

Combustion Air Requirements

GAS CONVERSION

Converting Atmospheric and Direct Ignition Furnaces

Provides step-by-step instructions for converting the furnace from natural gas to LP gas.

TROUBLESHOOTING

Standing Pilot Models - Main Burner Issues

Addresses common problems like the main burner not coming on for standing pilot models.

Control Module Status Indicators

Pilot Will Not Light or Goes Out

Provides troubleshooting steps for pilot ignition failures and common causes.

Main Flame Burner Issues and High Gas Bills

Covers troubleshooting for main flame not burning properly, high gas bills, and burner lockout.

TROUBLESHOOTING DIRECT IGNITION FURNACES INCLUDING GAS GUN

Burner Motor and Blower Issues

Addresses problems with the burner motor not running or the combustion blower running without flame.

Ignitor and Flame Sensing Issues

Details troubleshooting for ignitor heating failures, flame lockout, and short cycling.

TROUBLESHOOTING - OIL GUN

Burner Flame Without Motor Running

Circulation Blower Issues

Oil Burner Start-Up Problems

Covers issues when the oil burner does not start or locks out on safety.

MAINTENANCE

Homeowner Maintenance Tasks

Serviceman Maintenance Tasks

Lists periodic service checks and cleaning procedures recommended for servicemen.

Additional Oil Furnace Maintenance

WIRING DIAGRAMS

Gas Atmospheric Furnace Wiring Diagram

Illustrates electrical connections for gas atmospheric furnace models.

Standing Pilot with Induced Draft Furnace Wiring Diagram

Shows wiring for standing pilot models with induced draft furnaces.

Gas Atmospheric Furnace, A/C Ready Wiring Diagram

Details wiring for A/C ready gas atmospheric furnaces.

Standing Pilot with Induced Draft Furnace, A/C Ready Wiring Diagram

Wiring diagram for A/C ready, standing pilot, induced draft furnace models.

Gas Direct Ignition Furnace Wiring Diagram

Wiring diagram for direct ignition furnaces, including heating and A/C ready models.

Gas and Oil Furnaces Wiring Diagram