Williams 2903512, 2903511 installation instructions Direct-Vent Wall Furnace

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MODEL:

Natural Gas

2903512

MODEL:

Propane Gas

2903511

Installation Instructions and Owner’s Manual

Direct-Vent Wall Furnace

WARNING: Improper installation, adjustment, alteration, service, or maintenance can cause injury or property damage. Refer to this manual. For assistance or additional information, consult a qualified installer, service agency or the gas supplier.

WARNING: Installation and repair must be done by a qualified service person. The furnace should be inspected before use and at least annually by a professional service person.

WARNING: If not installed, operated and

maintained in accordance with the manufacturer’s instructions, this

product could expose you to substances in fuel or from fuel combustion which can cause death or serious illness and which are known to cause cancer, birth defects or other reproductive harm.

WARNING: If the information in this manual is not followed exactly; a fire or explosion may result, causing property damage, personal injury or loss of life.

-Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance.

-WHAT TO DO IF YOU SMELL GAS

• Open all windows.

• Do not try to light any appliance.

• Do not touch any electrical switch.

• Do not use any phone in your building.

• Extinguish any open flame.

• Immediately call your gas supplier from a neighbor’s phone. Follow the gas supplier’s instructions.

• If you cannot reach your gas supplier, call the fire department.

-Installation and service must be performed by a qualified installer, service agency or the gas supplier.

Williams Furnace Co., 250 West Laurel Street, Colton, CA 92324 U.S.A.

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Contents Direct-Vent Wall Furnace General Information and Technical Data Table of ContentsSafety Information for Users of LP Gas Safety Rules and General WarningsLP Gas Warning Odor Some Points to Remember Technical DataWall Installation InstallationPage Outside Location for Vent Terminal Ring Gasket Gas Type Nozzle Part Number Gas ConversionsNozzle Diameter Minimum Manifold Gas PressurePressure Testing of the Gas Supply System Installing a New Main Gas Shutoff ValveGas Supply High Altitudes U.S. OnlyChecking the Gas Inlet Pressure First Firing of the FurnaceChecking the Gas Manifold Pressure Electrical Wiring Operating Instructions For Your Safety Read Before OperatingWhat to do if the RED Lamp is LIT Servicing Checking and Adjusting the Gas Manifold PressureLubrication of Moving Parts Flame Visual CheckAnnual Maintenance Requirements Overview Programmable TimerDay and Time Setting Setting and Adjustment Initial ConditionsProgramming the Timer Manual OperationCancelling of all Preset Programs Cancelling a Single ProgramUsing the Skip Function Skip Function Procedure During OperationStarting Sequence Electrical TroubleshootingTroubleshooting Step Starting Sequence Gas Gas Assembly Replacement PartsJMTR018