Williams 2903511, 2903512 Table of Contents, General Information and Technical Data

Table of Contents

General Information and Technical Data

Instructions to Installer ……………………………………………………………………………………………………………………1

Safety and General Warnings ………………………………………………………………………………………………………….. 2

Technical Data …………………………………………………………………………………………………………………………… 3

Installation

Wall Installation ….................................................................................................................................................................... 4

Outside Location for Vent Terminal …...................................................................................................................................... 6

Gas Conversions ….................................................................................................................................................................. 8

Gas Supply …........................................................................................................................................................................... 9

Electrical Wiring Diagrams …….............................................................................................................................................. 11

Operating Instructions ……………………..……………………………………………………………..……………………………... 12

Servicing

Checking and Adjusting the Gas Manifold Pressure ………………………………………………………………………….……. 14

Checking, Removing and Reassembling of the Vent Air Intake System ………………………………………………………… 14

Lubrication of Moving Parts …………………………………………………………………………………………………………… 14

Flame Visual Check ………………………………………………………………………………………………………………….... 14

Annual Maintenance Requirements ………………………………………………………………………………………………….. 15

Programmable Timer

Overview ………………………………………………………………………………………………………………………………… 16

Setting and Adjustment ………………………………………………………………………………………………………………... 17

Troubleshooting

Starting Sequence …………………………………………………………………………………………………………………….. 19

Replacement Parts ………………………………………………………………………………………………………………...………. 22

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 instruction manual with the home owner after installation. Installer must show 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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