Williams 2503531, 4003531 installation manual Safety Information

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THE COMFORT PRODUCTS PEOPLE

DIRECT-VENT PROPANE/LP GAS HEATER

SAFETY

INFORMATION

WARNINGS

IMPORTANT: Read this owner’s manual carefully and completely before trying to assemble, operate, or service this furnace. Improper use of this furnace can cause seri- ous injury or death from burns, fire, explosion, electrical shock, and carbon monoxide poisoning.

DANGER: Carbon monoxide poisoning may lead to death!

Carbon Monoxide Poisoning: Early signs of carbon monoxide poisoning resemble the flu, with headaches, dizziness, and/or nau- sea. If you have these signs, the furnace may not be working properly. Get fresh air at once! Have furnace serviced. Some people are more affected by carbon monoxide than others. These include pregnant women, people with heart or lung disease or anemia, those under the influence of alcohol, and those at high altitudes.

Propane/LP Gas: Propane/LP gas is odor- less. An odor-making agent is added to pro- pane/LP gas. The odor helps you detect a propane/LP gas leak. However, the odor added to propane/LP gas can fade. Propane/LP gas may be present even though no odor exists.

Make certain you read and understand all warnings. Keep this manual for reference. It is your guide to safe and proper operation of this furnace.

WARNING: Any change to this heater or its controls can be dangerous.

Due to high temperatures, the appliance should be located out of traffic and away from furniture and draperies.

Do not place clothing or other flammable material on or near the appliance. Never place any objects on the furnace.

Carefully supervise young chil- dren when they are in the same room with furnace.

Surface of furnace becomes very hot when running furnace. Keep children and adults away from hot surface to avoid burns or clothing ignition. Furnace will remain hot for a time after shutdown. Allow surface to cool before touching.

Turn off furnace and unplug and let cool before servicing. Unless you need gas supply for testing, shut off equipment shutoff valve before servicing. Only a qualified service person should service and repair furnace and venting system.

Replace any safety screen or guard removed for servicing be- fore operating furnace.

You must keep control compart- ments, burners, and circulating air passages clean. More frequent cleaning may be needed due to excessive lint and dust from car- peting, bedding material, etc. Turn off the gas valve and unplug before cleaning furnace.

1.A qualified service person must install furnace.

2.This appliance is only for use with the type of gas indicated on the rating plate. This appliance is not convertible for use with other gases.

3.Use only propane/LP gas. Do not con- vert furnace to use different fuel type.

4.If you smell gas

Shut off gas supply.

Do not try to light any appliance.

Do not touch any electrical switch; do not use any phone in your building.

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.

5.Do not block the flow of combustion air (outside air) or heated air (room air) to the furnace.

6.This furnace must have fresh air for proper operation. If not, poor fuel combustion and improper venting of flue gases will result. Carbon monoxide poisoning from backed- up flue gases could occur. The State of California lists carbon monoxide as a re- productive toxin under Proposition 65.

7.Never install the furnace

in a recreational vehicle

in an alcove

on an inside wall

as a fireplace insert

in high traffic areas

in windy or drafty areas

behind a door or where an open door would block normal air flow

8.Provide the following minimum fur- nace clearances from furnace front cover to combustibles (as viewed from the front of furnace): Below Front Cover: 6 inches; Adjoining Wall:

12 inches; Above Front Cover:

12 inches; Front: 8 feet

9.Do not obstruct the flow of combus- tion and ventilation air in any way. Pro- vide adequate clearances around air openings into the combustion chamber along with adequate accessibility clear- ance for servicing and proper operation.

10.Provide the following minimum furnace clearances from furnace cabinet (portion of cabinet extending into outside air, as viewed from the rear of furnace):

Cabinet Back: 36 inches

Cabinet Sides: 6 inches

Cabinet Bottom: Must be high enough off the ground to prevent snow, water, leaves, or any other objects from block- ing cabinet vents.

11.Always follow lighting instructions. Never attempt to light burner with a match or butane torch.

12.Do not run furnace

where flammable liquids or vapors are used or stored

under dusty conditions

15.Do not use furnace as a cooking device.

16.Do not alter furnace or its controls. Any change may create a safety hazard.

19.Do not use furnace if any part has been under water. Immediately call a quali- fied service person to inspect the fur- nace and to replace any part of the con- trol system and any gas control which has been under water.

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Contents For Your Safety What to do if YOU Smell GAS OWNER’S Operation and Installation ManualFor Your Safety Safety Information Local Codes Product FeaturesSpecifications UnpackingCheck GAS Type InstallationInstallation Items Locating FurnaceInstalling in Masonry Wall Installing ThermostatInstalling in Normal Frame Wall Creating Wall Opening and Mounting FurnaceLocating Thermostat on Wall Routing Thermostat CableMounting the Thermostat to Wall Connecting to GAS SupplyConnecting Furnace to Gas Supply at Front of Furnace Connecting Furnace to Gas Supply at Rear of Furnace Removing Screws on Lower Flange 40,000 BTU/Hr Model ShownProviding Gas Piping to Furnace ExamplePressure Testing Gas Supply Piping System Checking GAS ConnectionsPressure Testing Furnace Gas Connections Performance CheckOperating Instructions For Your Safety Read Before LightingOperating Furnace To Turn OFF GAS To Furnace Inspecting Burner FlameNormal Operating Sequence Thermostat Control OperationCleaning and Maintenance Troubleshooting Observed Problem Possible Cause RemedyIgnition Failures Observed Problem Possible Cause Wire and wire connections at probe Technical Service Wiring Diagrams ReplacementService Hints PartsIllustrated Parts List Cabinet Assembly 25,000 BTU/HR ModelCabinet Assembly 40,000 BTU/HR Model Combustion Chamber Assembly 25,000 BTU/HR Model Combustion Chamber Assembly 40,000 BTU/HR Model Burner Assembly 25,000 BTU/HR Model Burner Assembly 40,000 BTU/HR Model Blower Assembly 25,000 BTU/HR Model Blower Assembly 40,000 BTU/HR Model Warranty Information Limited Warranty Williams GAS Wall Furnace

2503531, 4003531 specifications

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