Lodge Manufacturing GMD1-80N manual

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All installations and services must be performed by qualified service personnel.

4.Remove the four screws securing the manifold in the burner box. Pull the manifold far enough out of the burner box to access the burner orifices. (See figure 8)

5.Remove the main burner orifices from the manifold using a 1/2-inch wrench. Replace the existing main burner orifices with conversion orifices as indicated in table 1.

6.Refer to the instructions provided in the gas valve conversion kit for regulator spring change out instructions.

7.Reinstall the manifold into the burner box. Make sure that all orifices go into their respective burners and the groove of the rubber grommet on the manifold lines up on the edge of the burner box to seal around the manifold. Secure it with four screws. (See figure 8).

8.Inspect the seal on the burner box cover and if damaged replace it. Install and secure the burner box cover. Make sure all the fastening screws are used.

9.Check to make sure that the electrical connections to the gas valve are tight.

10.Check that the plastic hose from the pressure switch is attached securely to the hose barb at the outlet of the gas valve without being kinked.

: The regulator of the gas valve will not function properly if this hose connection is not made.

11.Reconnect the furnace to the gas supply.

12.Refer to initial start-up and operating instructions for test fire and burner adjustments.

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Contents GAS-FIRED Furnace Safety Section Page Page Page Table of Contents Section Beginning Page Models GMD1-80N III. Furnace Specifications Model GMD1-80Blower Data IV. Installation Roof Jack Standard ChimneyFurnace Location Page Base Installation Page Alcove Installation Closet Installation ? Warning Hazard Combustion AIR Page GAS Piping Electrical Wiring AWG Contents Quantity NAT. to Propane ConversionManifold Removal and Orifice Change Page Adjustment of Heat Input Rate Initial Start UPOperating Instructions GAS Pressure Chart for ALL GMD1-80 Model Furnaces Burner Adjustment Setting Temperature Rise Furnace Checkout ProcedurePage Installers Instructions to User VI. Starting the Unit Refer to the Troubleshooting Section of this Manual Page Diagnostic Features Power must be disconnected before servicingTurn Tstat Setting Above Room Temp Yes After GAS Valve OPENS, do the Burners IGNITE? Check ALL VIII. Dealer Maintenance Inducer Blower AssemblyElectrical BurnersInspecting the Venting System GASKETS/SEALING MaterialsHeat Exchanger House AIR BlowerOn START-UP IX. User Information Section Component Locations Inspection AreasFilter Location and Cleaning Appendix A. Replacement Parts List Page Appendix B Wiring Diagram