Williams 1773512, 1773511 Table of Contents General Information and Technical Data

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Table of Contents

Table of Contents

General Information and Technical Data

This furnace is design certified to ANSI Z21.86-2004 / CSA 2.32-2004 Gas–Fired Gravity and Fan-Type, Direct-Vent Wall Furnaces as a Fan-Type Direct-Vent Wall Furnace to be installed on an outside wall according to these instructions.

Any alteration of the original design, installed other than as shown in these instructions or used with a type of gas not shown on the rating plate is not permitted.

Instructions to Installer

Installation and repair should be done by a QUALIFIED SERVICE TECHNICIAN.

The installation must conform to local codes or in the absence of local codes; the installation must conform to the National Fuel Gas Code ANSI Z223.1/NFPA 54, Natural Gas and Propane Installation Code CSA B149.1.

Mobile (Manufactured) home installations must conform with the “Manufactured Home Construction and Safety Standard Title 24 CFR, Part 3280” or, when such a standard is not applicable, the Standard for Manufactured Home Installations, ANSI A 225.1 NFPA/501A, Mobile Home Standard, CAN/CSA Z240 MH Series, in Canada. Installer must leave this instruction manual with the home owner after installation. Installer should show the home owner how to start and operate furnace and thermostat. Installer must provide a 1/8-inch NPT plugged tapping for test gauge connection immediately upstream of the gas supply connection of the furnace.

During initial firing of the furnace, residual manufacturing grease will bake out and smoke will occur which is not a health danger. To prevent nuisance and operation of fire alarms, ventilate the room for the first two hours of operation.

WARNING: Any change to this furnace or its controls can be dangerous. This is a heating appliance and any

panel, door or guard removed for servicing this furnace must be replaced prior to operating the furnace.

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Contents Williams Furnace Co., 250 West Laurel Street, Colton, CA 92324 U.S.A Direct-Vent Wall FurnaceTable of Contents General Information and Technical Data Instructions to InstallerLP Gas Warning Odor Safety Rules and General WarningsSafety Information for Users of LP Gas That’s your signal to go into immediate actionTechnical Data Some Points to RememberInstallation Wall InstallationFlue outlet tube length = wall thickness + 1-5/16-inches 7.9 mm Outside Location for Vent TerminalAir inlet tube length = wall thickness + 3/32-inches 2.4 mm A + 33.3 mm 13. Relocate the vent cap and attach it with the screws. Figure Nozzle Part Number Gas ConversionsGas Type Nozzle DiameterPressure Testing of the Gas Supply System High Altitude AdjustmentInstalling a New Main Gas Shutoff Valve Gas SupplyChecking the Gas Manifold Pressure First Firing the FurnaceChecking the Gas Inlet Pressure A B CElectrical Wiring Diagram Key OPERATING INSTRUCTIONS FOR YOUR SAFETY READ BEFORE OPERATINGOperating Instructions TO TURN OFF GAS TO APPLIANCEWHAT TO DO IF THE RED LAMP IS LIT HOW TO SHUT OFF THE APPLIANCEUSING THE FEATURES OF YOUR FURNACE Checking, Removing and Reassembling of the Vent Air Intake System Checking and Adjusting the Gas Manifold PressureServicing Lubrication of Moving PartsAnnual Maintenance Requirements Programmable Timer OverviewProgramming the Timer Setting and Adjustment Initial ConditionsDay and Time Setting Manual OperationUsing the Skip Function Cancelling a Single ProgramCancelling of all Preset Programs Skip Function Procedure During OperationStep Troubleshooting Starting Sequence ElectricalTroubleshooting Step Summer Mode StepTroubleshooting Step Starting Sequence Gas Electric Box Replacement PartsGas Assembly M2 - Fan Thermostat Fan Blades 4 pieces M - Fan Motor 2 Pieces RP8 Flame Sensor RP7 Spark Igniter 2 piecesS - Combustion Blower Motor M1 - Overheat Thermostat Part NumberJLTT015 Part Number JLTT023 Part Number JMTR017
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