Nordyne M3RL 060A BW User Manual

Direct Vent (SeaHed Combustion) Forced Air Gas Furnaces
M3RL Series 90+ Downfiow Condensing Furnace
For installation in:
I. Manufactured Homes
2. Park Models and Manufactured Buildings
3. Modular Homes/Buildings
WARNING:
FiRE OR EXPLOSION HAZARD
Failure to fol!ow safety warnings e×actly could
result in serious injury, death or property
damage.
- Do not store or use gasoline or other flammable
vapors and liquids in the vicinity of this or any other
appliance.
-WHAT TO DO mFYOU SMELL GAS
oDo not try to light any appliance.
oDo not touch any electrical switch; do not use any
phone in your building.
, Leave the building immediately.
oImmediately call your gas supplier from a neighbor s
phone. Follow the gas supplier's instructions.
, If you cannot reach your gas supplier, call the fire
department.
-installation and service must be performed by a
qualified installer, service agency, or the gas sup-
plier.
RISQUE D'INCENDmE OU D'EXPLOSmON
Le non-respect des avertissements de s_curit_
pourrait entra_ner des blessutes graves, la
mort ou des dommages mat_rieJs.
- Ne pas entreposer ni utiliser de I'essence ni
d'autres vapeurs ou liquides inflammables dans Ic
voisinage de cet appareil, ni de tout autre apparei
-QUE FAmRE S'IL YA UNE ODEUR DE GAZ
oNe pas tenter d'allumer aucun appareil.
,Ne toucher a aucun interrupteur 61ectdque;
n'utiliser aucun t616phone dans le b_timent.
oE_vacuerI'immeuble immCdiatement.
, Appeler immCdiatement le foumisseur de gaz en
employant le t616phone d'un voisin. Respecter
la lettre les instructions du foumisseur de gaz.
oSi personne ne repond, appeler le service des
incendies.
- Uinstallation et I'entretien doivent Ctre effectues
par un installateur qualifie, un organisme de
service ou le fournisseur de gaz.
BW Models
BWT Models
WARNING:
Shoumd overheating occur, or the
gas suppty fail to shut off, shut
off the manual gas valve to the
appliance before shutting off the
electrical supply.
Improper installation, adjust-
ment, amteration, service or
maintenance can cause injury
or property damage. Refer to
this manual. For assistance or
additional information consult
a qualified installer, service
agency or the gas supplier.
LEAVE THESE mNSTRUCTmONS WroTHTHE HOMEOWNER.

Nordyne M3RL 060A BW Specifications

General

BTU	60, 000
Efficiency	80% AFUE
Blower Motor	Multi-speed
Voltage	115V
Vent Size	4 inch
Fuel Type	Natural Gas
Stages	Single-stage

Summary

General Furnace Information

Furnace Specifications and Airflow Data

Details furnace specifications and airflow performance data.

Installer Guidance and Owner Information

Notice to Installer

Provides important installation guidelines and warnings for installers.

Owner Information

Information regarding the manufacturer and product history.

Manufacturer Warranty and Responsibilities

Installation Standards

Lists applicable codes and standards for furnace installation.

Furnace Location Requirements

Circulating Air Supply

Requirements for the system that supplies air for circulation.

Return Air Provisions

Ducted Return Air

Air Distribution Systems

Duct Connector Selection

Guidance on selecting appropriate duct connectors based on dimensions.

Duct Installation

Procedures and suggestions for installing ductwork.

Duct Installation Procedures

Installing Platinum Series 14" Round Duct Connector

Specific instructions for installing a platinum series round duct connector.

Installing Screw Down Duct Connector

Steps for installing a screw-down type duct connector.

Duct Installation Methods

Installing Finger Tabbed Duct Connectors

Instructions for installing finger-tabbed duct connectors.

Alternate Attachment Methods

Alternative methods for attaching duct connectors when standard methods are difficult.

Furnace Installation Steps

Install Furnace

Steps for physically installing the furnace unit.

Venting and Combustion Air Requirements

Venting Requirements

Guidelines for proper furnace venting systems.

Carbon Monoxide Poisoning Hazard

Critical safety warning about carbon monoxide risks.

Vent Pipe Installation Guidance

Vent Pipe Material

Lists approved materials for vent and combustion air pipes.

Vent Pipe Installation

Guidelines for routing and supporting vent piping.

Outdoor Vent Termination

Horizontal Venting

Instructions for routing vent pipes horizontally through a wall.

Vertical Venting

Instructions for routing vent pipes vertically through a roof.

Horizontal and Vertical Venting Details

Horizontal Venting

Details on horizontal vent termination and kits.

Vertical Venting

Details on vertical vent termination and kits.

Concentric Vent Termination

Information on using a concentric vent termination kit.

Drainage of Condensate from Furnace

Gas Supply and Piping

Leak Check

Procedures for testing gas piping connections for leaks.

High Altitude Derate

Guidance on adjusting furnace input for high altitude installations.

Furnace Conversion Procedures

To Remove the Burner Assembly

Steps for safely removing the furnace burner assembly.

To Remove the Burner Orifices

Steps for removing burner orifices for conversion.

To Convert the Unit to the Alternate Gas

Instructions for converting the furnace to a different gas type.

Lighting and Adjustment of the Appliance

Reinstalling the Burner Assembly

Steps for reinstalling the burner assembly after conversion.

Pressure Gauge Installation

Guidance on installing pressure gauges for gas line checks.

Electrical Wiring

Manifold Pressure

Details on setting and checking manifold gas pressure.

Completing the Conversion

Final steps to complete the gas conversion process.

Wiring Connections

Line Voltage Wiring

Instructions for connecting the main 115V power supply.

Low Voltage Wiring

Instructions for connecting low voltage thermostat wiring.

Ventilation Requirements

Start-Up and Adjustments

General Start-Up Checks

General checks to perform before starting up the furnace.

Shut Down Procedure

Steps to safely shut down the furnace.

Verifying Firing Rate

Procedure to confirm and adjust the furnace's firing rate.

Verifying and Adjusting Temperature Rise

How to verify and adjust the air temperature rise across the heat exchanger.

Component Operation Verification

Verifying Burner Operation

Checks to ensure proper burner flame and operation.

Verifying Supply Air Limit Switch Operation

Testing the function of the supply air limit switch.

Description of Components

Furnace Accessory Kits

Maintenance Procedures

Lubrication

Information regarding lubrication of motor bearings.

Condensate Drain Assembly

Maintenance and checks for the condensate drain system.

Blower Compartment

Guidance on cleaning the blower compartment.

Heat Exchanger and Burner Maintenance

Recommended annual inspection and cleaning of heat exchanger and burners.

System Operation Information

Sequence of Operation

Describes the operational sequences for heating, cooling, and fan modes.

Cooling Mode Operation

Operational sequence for the cooling mode.

Fan Mode Operation

Operational sequence for the fan-only mode.

Furnace Fails to Operate Troubleshooting

Troubleshooting guide for when the furnace does not operate.

Installation and Performance Checklist