Nordyne M3RL installation instructions Owner Information, General Description

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!WARNING:

Do not use this appliance if any part has been submerged under water. Im- mediately call a qualified service tech- nician to inspect the appliance and to replace any part of the control system and any gas control that has been submerged underwater.

NOTICE TO INSTALLER

Installer is advised to follow carefully all instruc- tions and warnings in this manual to insure maximum performance, safety, and operating efficiency of these appliances. Improper installa- tion may create hazardous conditions, and will void the appliance warranty.

GENERAL

General Description

The M3 series gas furnaces are listed direct vent (sealed combustion) forced air furnaces for use with both natural and propane gases. The M3 series is a Category IV and type FSP furnace. The M3 furnace series has been certified to the ANSI Z21.47/CSA2.3-2001 for use in the United States and Canada and to the UL307B —1995 for use in the United States.

These furnaces may be installed in:

1.Manufactured Homes.

2.Park Models and Manufactured buildings

3.Modular Homes/Buildings

The following are safety guidelines with refer- ences to their specific sections or pages in the manual.

1.Use only type of gas approved for this furnace. Refer to the furnace rating plate.

2.Install this furnace only in location and position as specified in pages 7 - 13 of these instructions.

3.Provide adequate combustion and ventila- tion air to the furnace space as specified in pages 13 - 20 of these instructions.

4.Combustion products must be discharged outdoors, connect this furnace to an ap- proved vent system only, as specified in pages 14-19 of these instructions.

5.Never test for gas leaks with an open flame. Use a commercially available soap solution made specifically for the detection of leak to check all connections.

6.Always install furnace to operate within the furnace’s intended temperature rise range with a duct system that has an external static pressure within the allowable range, as specified in page 4 of these instruc- tions. See furnace rating plate.

7.When a furnace is installed so that supply ducts carry air circulated by the furnace to areas outside the space containing the furnace, the return air shall also be handled by duct(s) sealed to the furnace casing and terminating outside the space contain- ing the furnace. Note: This section only applies to furnaces installed with side or top return air.

8.A gas-fired furnace for installation in a residential garage must be installed as specified in page 7 of these instructions.

9.The furnace is not to be used for tempo- rary heat of buildings or structures under construction.

M3 series furnaces are air conditioning ready as shipped. The furnace cooling capacities of the blower motor speed taps are shown in Table 3. Table 2 lists the shipping weights for the M3 series furnaces.

OWNER INFORMATION

NORDYNE has been involved in the design of products for the manufactured home industry since the first manufactured home or trailer was built.

NORDYNE originated the sealed combustion system, which separates the furnace com- bustion system from the living area of the home, now a standard for the manufactured home industry.

NORDYNE engineers developed the first cen- tral heating system and the first central air conditioner for manufactured homes.

NORDYNE is dedicated to bringing to its cus- tomers the finest heating and cooling comfort possible. NORDYNE constantly seeks to fur- ther refine its products to continuously provide exceptional comfort.

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Contents Installation Instructions Page L 060 a a W Table of ContentsFurnace Specifications/Airflow Data Shipping WeightGeneral Top ViewGeneral Description Owner InformationManufacturer WARRANTY, OWNER’S Responsibilities Installation StandardsMinimum Clearances LocationCirculating AIR Supply Return AIR Provisions Duct ConnectorsDucted Return AIR Closet or AlcoveAIR Distribution Systems Duct Connector SelectionDuct Installation Installing Screw Down Duct CON- Nector Installing Platinum Series 14 Round Duct ConnectorCUT Duct Opening Finger Tabbed only Screw Down Platinum SeriesAlternate Attachment Methods Installing Finger Tabbed Duct CON- NectorsGeneral Install FurnaceVenting and Combustion AIR Requirements Furnace Must not be Common Vented with Other Appliances Venting RequirementsVent Termination Clearances for Direct Vent Furnaces Vent TableVent Pipe Material Vent Pipe InstallationHorizontal Venting Downflow FurnaceHorizontal Venting Drainage of Condensate from Furnace Alternate Horizontal Vent InstallationGAS Supply and Piping Furnace with Condensate Drain Trap AssemblyLeak Check ConversionHigh Altitude Derate To Turn Off Fuel Supply to the ApplianceTo Remove the Burner Orifices To Remove the Burner AssemblyTo Convert the Unit to the Alternate Gas Approximate Orifice Size for Natural and LP GasesConvertible Pressure Regulator Cap Lighting and Adjustment of the ApplianceLine Voltage Wiring Electrical WiringType of Fuel Manifold Pressure Completing the ConversionElectrical Data Low Voltage WiringVentilation START-UP and AdjustmentsStart-Up Procedure Verifying Firing Rate Shut Down ProcedureSequence of Operation Description of Components Verifying Operation of the Supply Air Limit SwitchGas Flow Rate Verifying Burner OperationAccessory Kits MaintenanceCombustion Air and Vent System Air FilterSystem Operation Information Condensate Drain AssemblyLubrication Blower CompartmentFurnace Fails to Operate Cooling ModeM3 Downflow Furnace Downflow Furnace Wiring Diagram Page Fuel Type INSTALLATION/PERFORMANCE Check List¢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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