Nordyne M1B 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 fire or explosion
may result causing property damage,
personal injury or loss of life.
– Do not store or use gasoline or other
flammable vapors and liquids in the
vicinity of this or any other appli-
ance.
– 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 fire department.
– Installation and service must be per-
formed by a qualified installer, ser-
vice agency or the gas supplier.
!
WARNING:
Should overheating occur, or the gas
supply fail to shut off, shut off the
manual gas valve to the appliance
before shutting off the electrical sup-
ply.
!
WARNING:
Improper installation, adjustment, al-
teration, service or maintenance can
cause injury or property damage. Re-
fer to this manual. For assistance or
additional information consult a quali-
fied installer, service agency or the
gas supplier.
Owners Manual/Installation Instructions
Series M1B, M1G, M1M and M1S
Downflow, Direct Vent (Sealed Combustion)
Forced Air Gas and Oil Furnaces
LEAVE THESE INSTRUCTIONS WITH THE HOMEOWNER.

Nordyne M1B Specifications

General

Brand	Nordyne
Model	M1B
Category	Furnace
Language	English

Summary

3. MANUFACTURER WARRANTY AND OWNER RESPONSIBILITIES

Owner's Setup and Conversion Duties

4. INSTALLATION STANDARDS

Compliance with Installation Codes

Installer must comply with all applicable codes and regulations for appliance installation.

6. MINIMUM CLEARANCES

Alcove and Closet Installation Clearances

7. RETURN AIR PROVISIONS

Closet Asphyxiation Hazard Warning

Caution regarding negative pressure in closets with furnace operating.

8. AIR DISTRIBUTION SYSTEMS

Return Air Obstruction Safety Warning

Warning against obstructing return air openings to prevent asphyxiation.

9. ROOF JACK SELECTION

Determining Correct Roof Jack Length

11. INSTALLATION

Floor, Ceiling, and Roof Opening Procedures

Procedures for cutting floor, ceiling, and roof openings for furnace and roof jack.

Ceiling and Roof Opening Cutout Details

Furnace Placement and Roof Jack Installation

Install Furnace onto Mounting Plate

Placing the furnace onto the duct connector and securing it to the mounting plate.

Install and Secure Roof Jack Assembly

Procedures for connecting and securing the roof jack assembly.

12. TRANSIT-MODE VENTING SYSTEM INSTALLATION

Factory Installation of Transit-Mode Venting

Site Installation of Transit-Mode Venting

13. ELECTRICAL WIRING

Branch Supply Circuit Wiring Procedures

Routing electrical wiring and connecting branch supply circuits to the furnace.

Power Supply and Thermostat Wiring Connections

Connecting the main power supply and low-voltage thermostat wires.

Fuel Line Hook-Up and Leak Troubleshooting

Eliminating Fuel Line Air Leaks

16. LIGHTING AND SHUTDOWN

General Lighting and Shutdown Procedures

Standing Pilot Lighting Instructions Guide

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

Gas Valve Operation and Sequence Control

Turning Off Gas to the Appliance Procedure

Procedure for safely turning off gas supply to the furnace.

Direct Ignition Furnace Operation Instructions

M1M Series Direct Ignition Operation

Turning Off Gas Appliance Procedure

Procedure for safely turning off gas supply to the appliance.

Gas Gun Furnace Operation and Control Functions

DANGER: Gas Type and Flame Adjustment Warning

Warning about checking gas type and adjusting burner flame.

Turning Off Gas or Oil Appliance Procedure

Procedure for safely turning off gas or oil appliance.

17. SERVICE GUIDE

Burner Adjustment Procedures

Procedures for checking and adjusting gas pressure and pilot flame.

Gas Conversion and Combustion Air Safety

Gas Conversion Procedure Steps

Steps for converting the furnace from natural gas to LP gas.

Combustion Air Adjustment Technician Warning

Warning regarding improper combustion air adjustment by unqualified technicians.

Troubleshooting Standing Pilot Model Issues

Main Burner Failure to Start Troubleshooting

Diagnostic steps when the main burner fails to start.

No Main Flame After Gas Valve Power Troubleshooting

Troubleshooting no main flame when gas valve is powered.

Pilot Light Not Lighting or Going Out Troubleshooting

Troubleshooting Direct Ignition Furnace Issues

Burner Motor Not Running Troubleshooting

Combustion Blower Runs, No Flame Troubleshooting

Ignitor Not Heating Up Troubleshooting

Main Flame Ignites, Burner Locks Out Troubleshooting

Burner Short Cycling Troubleshooting

Gas Valve Issues: No Main Gas Flow Troubleshooting

Insufficient Heat Output Troubleshooting

Flame Without Motor Running Troubleshooting

Troubleshooting Circulation Air and Oil Gun Systems

Circulation Air Blower Not Operating Troubleshooting

Oil Gun Burner Start Failure Troubleshooting

Burner Locks Out on Safety Troubleshooting

20. WIRING DIAGRAMS

M1GH 056, 070 Atmospheric Furnace Wiring Diagram

Wiring diagram for M1GH 056 and 070 atmospheric furnace models.

Wiring Diagrams for Induced Draft Furnaces

M1GH 077, 090 Standing Pilot Induced Draft Wiring Diagram

Wiring diagram for M1GH 077/090 standing pilot induced draft furnaces.

Wiring Diagrams for A/C Ready Furnaces

M1G (B, C, D) A/C Ready Atmospheric Furnace Wiring Diagram

Wiring diagram for M1G (B, C, D) A/C ready atmospheric furnaces.

Wiring Diagrams for A/C Ready Induced Draft Furnaces

M1G (B, C, D) A/C Ready Induced Draft Wiring Diagram

Wiring diagram for M1G (B, C, D) A/C ready induced draft furnaces.

Wiring Diagrams for Direct Ignition Furnaces

M1M Direct Ignition Furnace Wiring Diagram

Wiring diagram for all M1M direct ignition furnaces with A/C ready.

Wiring Diagrams for Gas and Oil Furnaces

M1 (B, S) Gas and Oil Furnace Wiring Diagram

Wiring diagram for M1 (B, S) gas and oil furnaces with A/C ready.

21. EQUIVALENT ORIFICE SIZES AT HIGH ALTITUDES

High Altitude Orifice Size Adjustment Table