Manuals / Nordyne / Household Appliance / Furnace

Nordyne M3RL installation instructions ¢7082197¤, 708219E

Models: M3RL

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¢7082197¤

O’Fallon, MO

708219E

708219E (Replaces 708219D)

Specifications and illustrations subject to change without notice and without incurring obligations. Printed in U.S.A. (08/06)

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Nordyne M3RL installation instructions ¢7082197¤, 708219E

Contents

Installation Instructions ADVERTISSEMENTM3RL Series 90+ Downflow Condensing Furnace FIRE OR EXPLOSION HAZARDPage TABLE OF CONTENTS Lighting and AdjustmentInstallation/Performance Return Air ConfigurationFurnace Specifications / Airflow Data GENERALFigure 1. Furnace Dimensions Table 2. Shipping WeightNOTICE TO INSTALLER OWNER INFORMATIONGENERAL General DescriptionINSTALLATION STANDARDS MANUFACTURER WARRANTY, OWNER’S RESPONSIBILITIESLOCATION CIRCULATING AIR SUPPLYGENERAL Table 4. Minimum ClearancesRETURN AIR PROVISIONS Table 5. Duct ConnectorsTop View Figure 2. Non-Platinum Supply Duct SystemFigure 6. Closet or Alcove DUCTED RETURN AIRDUCT CONNECTOR SELECTION DUCT INSTALLATIONAIR DISTRIBUTION SYSTEMS REAR WALL OF CLOSET OR ALCOVEINSTALLING SCREW DOWN DUCT CON- NECTOR Duct ConnectorsFigure 9. Duct Connector CUT DUCT OPENING FINGER TABBED ONLYINSTALLING FINGER TABBED DUCT CON- NECTORS Figure 10. Installation of Duct ConnectorFigure 11. Narrow Duct Installation Figure 12. Alternate InstallationVENTING AND COMBUSTION AIR REQUIREMENTS INSTALL FURNACEGeneral VENTING REQUIREMENTS CARBON MONOXIDE POISONING HAZARD1.Seal any unused openings in the venting system 6.Close fireplace dampersTable 6. Vent Table Vent Pipe Installation Vent Pipe MaterialPipe Routing and Support Location of Outdoor TerminationsDownflow Furnace Figure 16. Horizontal VentingFigure 17. Vertical Venting Horizontal Venting Vertical VentingConcentric Vent Termination DRAINAGE OF CONDENSATE FROM FURNACE Figure 18. Alternate Horizontal Vent InstallationFigure 19. Exhaust and Combustion Air Pipe ClearancesGAS SUPPLY AND PIPING GeneralCONVERSION DO NOT REMOVE OR DEFACE THE ORIGINAL RATING PLATEFigure 22. Typical Gas Piping Leak CheckTo Remove the Burner Assembly To Remove the Burner OrificesTo Convert the Unit to the Alternate Gas LIGHTING AND ADJUSTMENT OF THE APPLIANCE HoneywellValve Reinstalling the Burner AssemblyELECTRICAL WIRING Line Voltage WiringManifold Pressure Type of FuelVerify proper operation after servicing START-UPAND ADJUSTMENTS VENTILATIONFour-wireHeating/Cooling Applications Start-UpProcedureSEQUENCE OF OPERATION Shut Down Procedure Verifying Firing RateDESCRIPTION OF COMPONENTS Table 11. Gas Flow RateVerifying Burner Operation MAINTENANCE FURNACE ACCESSORY KITSTable 12. Accessory Kits Combustion Air and Vent SystemSYSTEM OPERATION INFORMATION Condensate Drain AssemblyLubrication Blower CompartmentCooling Mode Fan ModeFurnace Fails to Operate M3 Downflow Furnace Figure 30. Downflow Furnace Wiring Diagram Factory Wiredwiring If any of the originalPage INSTALLATION/PERFORMANCE CHECK LIST ¢7082197¤ 708219E