Nordyne M3RL Installation Standards, Manufacturer WARRANTY, OWNER’S Responsibilities

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Follow the instructions in this booklet carefully and this appliance will provide many years of superior performance.

If you wish to cool your home automatically with a central air conditioning system investi- gate the excellent NORDYNE cooling systems available from your heating and cooling con- tractor. These systems are designed to work best with your NORDYNE furnace and have been carefully engineered to deliver optimum performance when mated with NORDYNE manufactured home furnaces.

NORDYNE also offers water heaters, fireplaces and ventilating systems specifically designed for manufactured housing applications. Check with your manufactured home retailer, your heating and cooling contractor or your distributor for information. Write directly to the factory (PO Box 8809, O’Fallon, MO 63366) if you are not able to locate a source for NORDYNE manufactured housing products in your area.

MANUFACTURER WARRANTY, OWNER’S RESPONSIBILITIES

It is the sole responsibility of the homeowner to make certain the gas furnace has been correctly set up and converted to the proper fuel (L.P. gas or Natural gas) and adjusted to operate prop- erly. All gas furnaces are manufactured for Natural gas and must be field converted when using L.P. gas.

A warranty certificate with full details is included with these instructions. However, NORDYNE will not be responsible for any costs found nec- essary to correct problems due to improper setup, improper installation, furnace adjustments, improper operating procedure on the part of the user, etc.

Some specific examples of service calls which cannot be included in warranty payments are:

1.Converting the furnace to use another type of gas.

2.Repairing duct work in the home found to be faulty.

3.Correcting wiring problems in the electrical circuit supplying the furnace.

4.Resetting circuit breakers, blown fuses or other switches.

5.Correcting problems due to improper gas supply pressure to the furnace.

6.Providing instructional training on how to light and operate the furnace.

7.Furnace problems caused by installation of an air conditioner, heat pump or other air comfort devices.

8.Revising installation of the furnace flue assembly.

9.Adjusting or calibrating of thermostat.

10.Any construction debris which falls into the flue system.

Carefully review these responsibilities with your manufactured housing dealer, service company or gas supplier so there will be no misunder- standing at a later time.

!CAUTION:

•Never attempt to alter or modify this furnace or any of its components.

•Never attempt to repair damaged or inoperable components. Such action could cause unsafe operation, ex- plosion, fire and/or asphyxiation.

•If a malfunction has occurred, or if you feel that the furnace is not oper- ating as it should, contact a qualified service agency or gas utility for as- sistance.

INSTALLATION STANDARDS

Installer shall be familiar with and comply with all codes and regulations applicable to the installa- tion of these heating appliances and related equipment. In lieu of local codes, the installation shall be in accordance with the current provi- sions of one or more of the following standards. a. Federal Manufactured Home Constructions

& Safety Standard (H.U.D. Title 24, Part 3280.707[a][2])

b.The Standard for Manufactured Home Instal- lations (Manufactured Home Sites, Commu- nities, and Set-Ups) ANSI A225.1 and/or CAN/CSA-2240 MH Series).

c.American National Standard (ANSI-119.2/ NFPA-501C) for all recreational vehicle in- stallations.

d.American National Standard (ANSI-Z223.1/ NFPA-54) and/or CAN/CGA B149 for all gas- fired furnace models.

e.American National Standard (ANSI-C1/NFPA- 70) and/or CSA 22.1 Canadian Electric Code Part 1 for all electrical field wiring.

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Contents Installation Instructions Page Table of Contents L 060 a a WGeneral Shipping WeightFurnace Specifications/Airflow Data Top ViewOwner Information General DescriptionInstallation Standards Manufacturer WARRANTY, OWNER’S ResponsibilitiesLocation Circulating AIR SupplyMinimum Clearances Duct Connectors Return AIR ProvisionsCloset or Alcove Ducted Return AIRDuct Connector Selection Duct InstallationAIR Distribution Systems CUT Duct Opening Finger Tabbed only Installing Platinum Series 14 Round Duct ConnectorInstalling Screw Down Duct CON- Nector Screw Down Platinum SeriesInstalling Finger Tabbed Duct CON- Nectors Alternate Attachment MethodsInstall Furnace Venting and Combustion AIR RequirementsGeneral Venting Requirements Furnace Must not be Common Vented with Other AppliancesVent Table Vent Termination Clearances for Direct Vent FurnacesVent Pipe Installation Vent Pipe MaterialDownflow Furnace Horizontal VentingHorizontal Venting Alternate Horizontal Vent Installation Drainage of Condensate from FurnaceFurnace with Condensate Drain Trap Assembly GAS Supply and PipingHigh Altitude Derate ConversionLeak Check To Turn Off Fuel Supply to the ApplianceTo Convert the Unit to the Alternate Gas To Remove the Burner AssemblyTo Remove the Burner Orifices Approximate Orifice Size for Natural and LP GasesLighting and Adjustment of the Appliance Convertible Pressure Regulator CapType of Fuel Manifold Pressure Electrical WiringLine Voltage Wiring Completing the ConversionLow Voltage Wiring Electrical DataSTART-UP and Adjustments Start-Up ProcedureVentilation Shut Down Procedure Sequence of OperationVerifying Firing Rate Gas Flow Rate Verifying Operation of the Supply Air Limit SwitchDescription of Components Verifying Burner OperationCombustion Air and Vent System MaintenanceAccessory Kits Air FilterLubrication Condensate Drain AssemblySystem Operation Information Blower CompartmentCooling Mode Furnace Fails to OperateM3 Downflow Furnace Downflow Furnace Wiring Diagram Page INSTALLATION/PERFORMANCE Check List Fuel Type¢7082197¤

M3RL specifications

The Nordyne M3RL is a high-efficiency gas furnace designed for residential heating applications, characterized by its robust performance and advanced technologies. It is part of Nordyne's distinguished lineup, which emphasizes reliability and comfort in home heating systems. The M3RL model is particularly notable for its focus on energy efficiency, making it an attractive option for homeowners looking to reduce their energy expenses while maintaining optimal heating levels.

One of the standout features of the Nordyne M3RL is its high Annual Fuel Utilization Efficiency (AFUE) rating, which often exceeds 80%. This efficient design ensures that more of the fuel consumed is converted into usable heat for the home. By employing a variable-speed blower, the M3RL enhances comfort by allowing for more precise control over air circulation, contributing to better temperature consistency throughout the living space.

The M3RL utilizes advanced multi-stage heating technology, allowing the system to operate at different capacities depending on the heating demand. This means it can run at lower settings during milder weather, which not only saves energy but also reduces wear and tear on the equipment, extending its lifespan. The furnace also includes a reliable ignition system that ensures quick and safe starts, eliminating the inefficiencies associated with older pilot light systems.

Another important characteristic of the Nordyne M3RL is its acoustical insulation, which minimizes operational noise. The quiet operation is particularly valued in residential settings, where noise pollution can be disruptive. Additionally, the furnace features a compact design, making it easy to install in a variety of spaces, including tight basements or utility rooms.

The M3RL model is also equipped with a smart control system that interfaces seamlessly with modern thermostats, offering homeowners the ability to program their heating schedules and optimize energy usage. This integration with smart home technology positions the M3RL not just as a heating solution, but as a component of a more comprehensive home energy management system.

In conclusion, the Nordyne M3RL gas furnace represents a blend of efficiency, advanced technology, and user-friendly features. Its high AFUE rating, multi-stage heating capability, quiet operation, and smart technology integration make it a reliable choice for homeowners aiming to enhance their comfort while minimizing energy costs. This furnace is a testament to Nordyne's commitment to innovation in the HVAC industry.
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