Nordyne M5SB 086 User Manual

Series M1B, M1M & M5S
Downfl ow, Direct Vent (Sealed Combustion)
Forced Air Gas & Oil Furnaces
For installation in:
• Manufactured Homes
• Recreational Vehicles, Park Models,
& Manufactured Buildings
• Modular Homes / Buildings
DO NOT DESTROY THIS MANUAL. KEEP IN A SAFE PLACE FOR FUTURE REFERENCE.
FIRE OR EXPLOSION HAZARD
• Failure to follow safety warnings exactly
could result in serious injury or property
damage.
• Installation and service must be performed
by a qualifi ed installer, service agency or the
gas supplier.
• 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 building.
• Leave the building immediately.
• Immediately call your gas supplier from a
neighbor’s phone. Follow the gas supplier’s
instructions.
• If you cannot reach your gas supplier, call
the fi re department.
WARNING:
RISQUE D’INCENDIE OU D’ EXPLOSION
• Le non-respect des avertissements de
sécurité pourrait entraîner des blessures
graves, la mort ou des dommages matériels.
• L’installation et l’entretien doivent être
effectués par un installateur qualifi é, un
organisme de service ou le fournisseur de
gazstaller, service agency or the gas supplier.
• Ne pas entreposer ni utiliser de l’essence ni
d’autres vapeurs ou liquides infl ammables
dans le voisinage de cet appareil, ni de tout
autre appareil.
QUE FAIRE S’IL Y A UNE ODEUR DE GAZ
• Ne pas tenter d’allumer aucun appareil.
• Ne toucher à aucun interrupteur électrique;
n’utiliser aucun téléphone dans le bâtiment.
• Évacuer l’immeuble immédiatement.
• Appeler immédiatement le fournisseur de
gaz en employant le téléphone d’un voisin.
Respecter à la lettre les instructions du
fournisseur de gaz.
• Si personne ne répond, appeler le service des
incendies.
AVERTISSEMENT
INSTALLATION INSTRUCTIONS

Nordyne M5SB 086 Specifications

General

Brand	Nordyne
Model	M5SB 086
BTU	86, 000
Efficiency	80%
Fuel Type	Natural Gas
Blower Motor	Multi-speed
Ignition Type	Direct Spark Ignition
Vent Diameter	4 inches

Summary

Important Safety Information

General Safety Warnings

Covers fire, explosion, and general hazard warnings, including gas leak procedures and appliance submersion.

Installation Compliance Standards

Details adherence to local codes, NFGC, ANSI, CSA, and other applicable regulations for installation.

Clearances and Airflow Requirements

Specifies minimum clearances and combustion/ventilation air needs for safe operation.

Referenced Installation Standards

General Information

Furnace Unit Location Guidelines

Circulating Air Requirements

Combustion Air and Return Air Safety

Warns against combustion product circulation and outlines return air duct security.

Furnace Installation Procedures

Locating and Cutting Duct Openings

Details how to precisely locate and cut openings for duct connectors.

Standard Duct Connector Installation

Details the step-by-step installation of standard duct connectors.

Alternate Duct Connector Attachment

Round Duct Connector Installation

Details the installation of round duct connectors.

Installing the Furnace Unit

Instructions for placing and securing the furnace onto the installed duct connector.

Roof Jack Installation

Roof Jack Selection Criteria

Guides on choosing the appropriate roof jack based on roof type and pitch.

Locating and Cutting Roof/Ceiling Openings

Installing the Roof Jack Assembly

Electrical Information

Electrical Safety Warnings and Cautions

Covers hazards like shock, fire, and explosion, plus cautions for servicing.

Line Voltage Wiring Requirements

Explains proper connection of line voltage, including polarity and disconnects.

Low Voltage Thermostat Wiring

Grounding Requirements

Fuel Supply and Piping

Fuel Supply Safety Warnings

Covers fire, explosion hazards, and what to do if gas is smelled.

Gas Piping Installation Codes and Requirements

Outlines codes, materials, and notes for safe gas piping installation.

Gas Leak Testing Procedures

Step-by-step guide for testing all gas connections for leaks using a soap solution.

Propane Gas Conversion

High Altitude Installation Adjustments

Flue Gas Sampling and Analysis

Startup and Adjustments

Pre-Startup Safety Checks

Essential safety checks to perform before lighting the furnace for the first time.

Burner Flame Observation and Adjustment

Emphasizes the importance of observing and adjusting the burner flame for safe operation.

Operating Instructions - Direct Ignition (M1M)

Shutting Off Gas - Direct Ignition

Operating Instructions - Oil Gun (M5S)

Operating Instructions - Gas Gun (M1B)

Verifying and Adjusting Temperature Rise

Burner Adjustment and Gas Pressure

Combustion Air Requirements and Settings

Operating Sequence

Direct Ignition Furnace (M1M) Sequence

Oil Gun Furnace (M5S) Sequence

Troubleshooting

High Gas Bills and Burner Motor Issues

Addresses common problems like high gas bills and the burner motor not starting.

Combustion Blower and Ignitor Problems

Flame and Lockout Issues

Covers scenarios where the main flame ignites but the burner locks out or short cycles.

Gas Flow and Heat Output Issues

Circulation Air Blower Will Not Operate

Oil Burner Start and Lockout Issues

LED Indicator Flashing and Cad Cell Resistance

Installation and Performance Checklist

Electrical System Checks

Checklist items to verify correct electrical connections and supply.

Gas System Checks

Checklist items to ensure proper gas supply, connections, and pressure.

Combustion Air and Venting System Checks