Nordyne M1BB 086 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 M1BB 086 Specifications

General

Model	M1BB 086
Heating Capacity	86, 000 BTU
Efficiency Rating	80% AFUE
Blower Type	Multi-speed
Blower Motor	PSC
Stages	Single Stage
Fuel Type	Natural Gas
Ignition Type	Direct Spark

Summary

1. SPECIFICATIONS

4. INSTALLATION STANDARDS

11. INSTALLATION

Floor and Ceiling Openings

Procedures for cutting floor and ceiling openings for furnace and roof jack installation, including precise measurements.

Duct Connector Installation

12. INSTALLATION OF TRANSIT- MODE VENTING SYSTEM

Transit-Mode Venting Assembly

Instructions for installing the roof jack assembly, including flashing and securing the flue pipe and combustion air pipe.

13. ELECTRICAL WIRING

Power Supply and Thermostat Wiring

Details on connecting the main power supply and thermostat wiring to the furnace control box.

14. FUEL PIPING

Gas and Oil Piping Installation

Guidelines for sizing and installing gas and oil fuel lines, including conversion for LP gas and safety precautions.

16. LIGHTING AND SHUTDOWN

General Safety Before Lighting

Critical safety instructions to follow before attempting to light the furnace, especially regarding gas detection.

Standing Pilot Lighting Procedure

Step-by-step instructions for safely lighting the pilot on standing pilot models, including pre-lighting checks.

Direct Ignition Operating Instructions

How to operate and light furnaces with direct ignition systems, emphasizing manual lighting is not required.

Direct Ignition Sequence of Operation

Oil Gun Furnace Operation

Gas Gun Furnace Operation

17. SERVICE GUIDE

Burner Adjustments Overview

GAS CONVERSION

Converting to LP Gas

TROUBLESHOOTING

Standing Pilot - No Main Burner

Troubleshooting steps for when the main burner fails to ignite on standing pilot models.

Control Module Status Indicators

Direct Ignition - Burner Issues

Troubleshooting common issues for direct ignition furnaces, such as motor not running, no flame, ignitor problems, and short cycling.

Oil Gun Troubleshooting

18. MAINTENANCE

Serviceman Maintenance Tasks