Nordyne M3RL installation instructions Vent Pipe Material, Vent Pipe Installation

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escape through such appliances or vents. Do not vent the furnace to a fireplace chimney or building chase.

If removing an existing furnace in a venting system, the venting system may not be properly sized. To test the vent system with the remaining appliances, follow the test outlined below.

The following steps shall be followed with each appliance connected to the venting system placed in operation, while any other appliances connected to the venting system are not in operation:

Vent Pipe Material

Vent and combustion air pipe and fittings must be one of the following materials and must conform to the indicated ANSI/ASTM standards:

Material

Standard

Schedule 40 PVC

D1785

PVC-DWV

D2665

SDR-21

D2241

& SDR-26

 

ABS-DWV

D2661

Schedule 40 ABS

F628

Foam/Cellular Core PVC

F891

Cement and primer must conform to ATSM Standard D2564 for PVC and Standard D2235 for ABS. When joining PVC piping to ABS, use an appropriate solvent cement and procedure per the piping manufacturer's recommendation and ASTM Standard D3138.

Vent Pipe Installation

Pipe Routing and Support

Route piping as directly as possible between the furnace and the outdoors and remember that routing affects pipe length limitations per Table 6. Locate the combustion air intake and the vent exhaust in the same atmospheric pressure zone - i.e. both must exit the building though the same portion of exterior wall or roof. Vent piping must be sloped upwards not less than 1/4" per foot in the direction from the furnace to the terminal. This is to ensure that any condensate flows back to the furnace where it can be disposed of through the condensate disposal system.

!CAUTION:

Combustion air must not be drawn from occupied spaces and a corrosive atmosphere.

The quality of outdoor air must also be considered. Be sure that the combustion air intake is not located near a source of solvent fumes or other chemicals which can cause corrosion of the furnace combustion system.

Piping must be mechanically supported so that its weight does not bear down on the furnace. Supports must be at intervals no greater than five feet, and at smaller intervals if necessary to ensure that there are no sagging sections to trap water (See Figures 16 & 17).

These condensing furnaces have been certified for installation with zero clearance between vent piping and combustible surfaces. However, it is good practice to allow space for convenience in installation and service.

Location of Outdoor Terminations

Vent and combustion air intake terminations must be located to ensure proper furnace operation and to conform to applicable codes. Figure 15 illustrates necessary distances from the vent termination to windows and building air intakes. In Canada, the Canadian Fuel

Gas Code takes precedence over these instructions. Specifically, all minimum distance requirements with respect to termination of the vent piping listed below.

The following list is a summary of vent terminal location requirements:

1.The termination must be 12 inches above snow level or grade level whichever is higher. See Figure 18 for alternate method to achieve 12" above snow level.

2.The minimum distance for a direct vent (2-pipe) installation from any door, openable window, or air gravity inlet is 1 ft. below, 1 ft. horizontally, or 1 ft. above.

3.The vent termination shall be a minimum of 3 ft. above any forced air inlet within 10 ft.

4.The vent termination shall be located at least 4 ft. horizontally from any electric meter, gas meter, regulator and any relief equipment. These distances apply ONLY to U.S. installations. In Canada, the Cana- dian Fuel Gas Code takes precedence.

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Contents Installation Instructions Page Table of Contents L 060 a a WShipping Weight Furnace Specifications/Airflow DataGeneral Top ViewOwner Information General DescriptionInstallation Standards Manufacturer WARRANTY, OWNER’S ResponsibilitiesCirculating AIR Supply LocationMinimum Clearances Duct Connectors Return AIR ProvisionsCloset or Alcove Ducted Return AIRDuct Installation Duct Connector SelectionAIR Distribution Systems Installing Platinum Series 14 Round Duct Connector Installing Screw Down Duct CON- NectorCUT Duct Opening Finger Tabbed only Screw Down Platinum SeriesInstalling Finger Tabbed Duct CON- Nectors Alternate Attachment MethodsVenting and Combustion AIR Requirements Install FurnaceGeneral 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 PipingConversion Leak CheckHigh Altitude Derate To Turn Off Fuel Supply to the ApplianceTo Remove the Burner Assembly To Remove the Burner OrificesTo Convert the Unit to the Alternate Gas Approximate Orifice Size for Natural and LP GasesLighting and Adjustment of the Appliance Convertible Pressure Regulator CapElectrical Wiring Line Voltage WiringType of Fuel Manifold Pressure Completing the ConversionLow Voltage Wiring Electrical DataStart-Up Procedure START-UP and AdjustmentsVentilation Sequence of Operation Shut Down ProcedureVerifying Firing Rate Verifying Operation of the Supply Air Limit Switch Description of ComponentsGas Flow Rate Verifying Burner OperationMaintenance Accessory KitsCombustion Air and Vent System Air FilterCondensate Drain Assembly System Operation InformationLubrication 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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