Lodge Manufacturing GMD1-80N manual

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

after turning off the gas supply. A final test for gas leakage must be made after purging the gas line.

: DO NOT wet electronic components during the leak test. Wetting electronic components may damage circuitry and cause a hazardous situation. Dry moisture from all leads and terminals if wetting occurs. Wait at least 24 hours for the circuit to fully dry before energizing the system.

: The furnace and its gas valve must be disconnected from the gas supply during pressure testing of the gas supply system at pressures in excess of 1/2 PSIG or 14.0 inches W.G. The furnace can be isolated from the gas supply by closing its manual shut off valve at test pressures equal to or less than 1/2 PSIG or 14.0 inches W.G.

: Copper and brass tubing and fittings (except tin lined) shall not be used if the gas contains more than a trace (0.3 grains per 100 cubic ft.) of hydrogen sulfide gas. Check with your gas supplier.

: If you suspect there is a problem with the furnace, the venting system or any other related problem, immediately contact a qualified service agency. If a service agency is not available, contact your fuel supplier.

: Personal injury, or property damage, could result from major repair or service of this furnace by anyone other than a qualified contractor. Only the routine maintenance described in the user section of this manual should be performed by the user.

: Do not block or obstruct air openings on the furnace or air openings communicating with the area in which the furnace is installed.

: Do not allow the outside air intake to be blocked or obstructed by vegetation, ice, snow or any other materials.

: Do not use this furnace if any part has been underwater. Immediately call a qualified service agency to inspect the furnace and to replace any part of the electrical or control system, which has been underwater.

: Should overheating occur or the gas supply fail to shut off, shut off the manual gas supply valve to the furnace before shutting off the electrical supply.

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Contents GAS-FIRED Furnace Safety Section Page Page Page Table of Contents Section Beginning Page Models GMD1-80N GMD1-80 III. Furnace Specifications ModelBlower 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 Propane Conversion Contents Quantity NAT. toManifold 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 Furnace Checkout Procedure Setting Temperature RisePage Installers Instructions to User VI. Starting the Unit Refer to the Troubleshooting Section of this Manual Page Power must be disconnected before servicing Diagnostic FeaturesTurn Tstat Setting Above Room Temp Yes After GAS Valve OPENS, do the Burners IGNITE? Check ALL Burners VIII. Dealer MaintenanceInducer Blower Assembly ElectricalHouse AIR Blower Inspecting the Venting SystemGASKETS/SEALING Materials Heat ExchangerOn START-UP IX. User Information Section Inspection Areas Component LocationsFilter Location and Cleaning Appendix A. Replacement Parts List Page Appendix B Wiring Diagram