Introduction; Basic Materials Needed; Basic Tools Needed; Optional Accessories - Williams 2509822 Owner's Manual

Introduction

The following steps are all needed for proper installation and safe operation of your furnace. If you have any doubts as to any
requirements, check with local authorities. Obtain professional help where needed. All of the checks and adjustments in the Start-Up
Procedures are vital to the proper and safe operation of the furnace. Please read the instructions before you install and use your
furnace. This will help you obtain the full value from this furnace. It could also help you avoid needless service costs if the answer to
the problem is found within this instruction manual.
Always consult your local heating or plumbing inspector, building department or gas utility company regarding regulations codes or
ordinances which apply to the installation of a vented wall furnace.
Check the furnace nameplate, located in the burner compartment, to make sure your furnace is equipped to operate on the type of gas
available (either natural or L.P. gas). DO NOT convert the furnace from natural gas to L.P. gas or from L.P. gas to natural gas without
the proper manufacturer's gas conversion kit.
Combustion air is drawn in from the room where the furnace is located and is vented out of the top of the furnace vertically through vent
piping in the stud space to a roof vent top. Vent material is not supplied with the furnace.
This furnace is equipped with a vent safety shutoff system designed to protect against improper venting of combustion products.
Operation of this wall furnace when not connected to a properly installed and maintained venting system or tampering with the vent
safety shutoff system can result in carbon monoxide (CO) poisoning and possible death.
The efficiency rating of this furnace is a product thermal efficiency rating determined under continuous operating conditions and was
determined independent of any installed system.

Basic Materials Needed

Pipe and fittings to make gas connections to the furnace.
Vertical venting materials. See page 14, Figure 8.

Basic Tools Needed

Hand drill or properly grounded electric drill
Expansion bit 1/2" to 1-5/8" or 1/2" and 1-1/2" blade bits
1/8" and 3/16" drill bit (metal)
6 ft. folding rule or tape measure
Screwdriver (medium blade)
Screwdriver (Phillips head)
Pliers (wire cutting)
Helpful Installation Information
The following booklets will help you in making the installation:
ANSI/NFPA 70, or current edition "National Electrical Code". In Canada: CSA C22.1 Canadian Electrical Code.
American National Standard Z223.1 or current edition of the "National Fuel Gas Code."
Obtain from the American National Standard Institute, Inc., 1430 Broadway, New York, NY 10018. In Canada, CAN/CGA B149.

Optional Accessories

Blower Accessories 2901, 2907 - May be used on all models and mounts on top of a furnace. This blower increases circulation of
warm air through the heated space. A 115V outlet adjacent to the furnace is required.
Trim Strip Kit 4701 - Provides a finished edge for sides of the wall furnace.
Free Standing Accessory 4901 - May be used with single-sided models. This accessory allows the furnace to be mounted on the
surface of a wall.
Vent Adapter Kit 9902, 9910 - Optional vent adapter, typically used when the furnace is vented into a properly lined chimney.
Rear Outlet Registers 6901, 6919, 6920 - May be used with single-sided models when recessed into a standard 2x4 inch interior stud
partition. This accessory directs some of the heated air into the room opposite the one in which the furnace is installed.
Oval B/W Vent Kit 9901 - This U.L. listed B/W vent kit contains four feet of oval, double-walled vent pipe, plate spacers and base or
hold-down plate that starts the venting from the top of furnace. See Vent Installation on page 14 for additional items you will need.
Plaster Ground Kit 6905 - Used for 6901 or 6919 Rear Outlet Registers.
Gas Conversion Kits - See page 16.
Pipe Joint Compound resistant to L.P. Gases.
Electrical wiring supplies as needed. Minimum wire size is #14
gauge copper.
Hammer
Stud Locator or small finishing nails
Tin Snips
8" adjustable wrench
12" adjustable wrench
Two, 10" or 12" pipe wrenches
Gloves and safety glasses
Introduction – 5