Nordyne M3RL 080A AW 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 080A AW Specifications

General

Brand	Nordyne
Model	M3RL 080A AW
Category	Furnace
Language	English

Summary

General Information and Requirements

General Description

Overview of the M3 series gas furnaces, their classification, and certifications.

Owner's Information

Details about NORDYNE's role in manufactured home heating and cooling systems.

Installation and Location Requirements

Furnace Location and Clearances

Specifies installation location, clearances, and platform requirements.

Circulating Air Supply

Warning about combustion products entering the return air system.

Return Air Provisions

Details requirements for acceptable return air systems for closet installations.

Air Distribution Systems

Guidance on designing supply duct systems for proper air distribution.

Duct Connector Selection

Information on selecting the correct duct connector for different furnace models.

Duct Installation Procedures

Steps for installing duct connectors, including floor cut-outs and fuel line holes.

Venting and Combustion Air

Venting and Combustion Air Requirements

General requirements for combustion air and venting systems for condensing furnaces.

Venting Requirements

Specifies installation requirements for 2-pipe combustion air piping and venting.

Vent Pipe Material

Details approved vent pipe materials and their standards.

Vent Pipe Installation

Details installation procedures, including routing, support, and termination.

Location of Outdoor Terminations

Specifies minimum distances for vent and combustion air intake terminations.

Gas Supply and Conversion

Gas Supply and Piping

Instructions for gas supply connection, leak testing, and compliance with codes.

Leak Check and High Altitude Derate

Procedures for leak testing gas connections and adjusting for high altitudes.

Conversion to Alternate Fuel

Details on converting the furnace from natural gas to LP gas or vice versa.

Appliance Adjustment and Electrical

Lighting and Adjustment of the Appliance

Procedures for lighting, checking operation, and adjusting manifold pressure.

Manifold Pressure and Conversion Completion

Details on manifold pressure settings and completing the fuel conversion process.

Electrical Wiring

Guidelines for electrical connections, grounding, and line voltage wiring.

Low Voltage Wiring

Instructions for low voltage thermostat wiring and connections.

Start-Up and Adjustments

General checks and procedures for initiating furnace operation.

Operation and Maintenance

Shut Down Procedure

Instructions for safely shutting down the furnace.

Verifying Firing Rate and Temperature Rise

Procedures to verify and adjust furnace firing rate and temperature rise.

Verifying Burner Operation and Limit Switches

Checks for proper burner operation and supply air limit switch function.

Furnace Accessory Kits

List of available accessory kits and their order numbers.

Maintenance Recommendations

General recommendations for yearly furnace checks and filter replacement.

System Operation Information

Details on proper maintenance for optimal performance and safe operation.

Sequence of Operation

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

Furnace Fails to Operate

Troubleshooting steps when the furnace does not operate correctly.

Technical Diagrams and Checklist

Location of Major Components

Diagram and list identifying key furnace components.

Downflow Furnace Wiring Diagram

Schematic illustrating the electrical connections for the furnace.

Installation/Performance Check List

A checklist for installers to verify proper installation and performance.