Williams 3509612, 2509612, 2509622 User Manual

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INSTALLATION & OPERATING

INSTRUCTION MANUAL

owners

manual

MODEL NOS.

2509612 2509622

GRAVITY WALL FURNACE

READ THIS OWNERS MANUAL

CAREFULLY BEFORE YOU INSTALL

YOUR NEW IMPROVED EFFICIENCY

!ii_I :!i_

MODEL NO_

2509611 2509621

3509611

3509621

5009611

5009621

FOR USE WITH

LIQUEFIED

PETROLEUM (L.P.)

GAS ONLY

Save This Manual For

Future Reference.

NOTE: CANADIAN MODEL NUMBERS THIRD

DIGIT FROM LEFT TO BE: 1 FOR BASIC ALTITUDES

2 FOR HIGH ALTITUDES

EXAMPLE: MODEL: 3509612 BECOMES 3519612

(0-2000 FT, BASIC ALTITUDE) OR BECOMES 3529612

(2000-4000 FT. HIGH ALTITUDE)

GAS-FIRED TOP VENT

WILLIAMS WALL FURNACE

WARNING: If the information in this|

manual is not followed exactly, a fire or ex- plosion 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 instruction.

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

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

WARNING: Improper installation, adjust-

ment, 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: Do not install any of these fur- naces (Natural or L.R Gas) in mobile

homes, trailers, or recreational vehicles.

Williams Furnace Co., 225 Acacia St., Colton, CA 92324 U.S.A

PRINTED IN US,A. 5/97 P322085

Contents

Williams Installation Policy ...................... 2

Introduction .................................. 3

Basic Description .............................. 3

Helpful Installation Information ................... 3

Safety Rules ................................. 4

Unpack Your Furnace .......................... 5

Basic Tools Needed ............................ 5

Basic Materials ............................... 5

Optional Accessories ........................... 5

Installing Your Wall Furnace ..................... 6

Locating Wall Furnace and Thermostat ............ 6

Combustion & Ventilation Air ................... 7-9

Recessed Mount Installation .................. 10-11

Surface Mount Installation ...................... 12

Vent Installation .............................. 12

Mount The Furnace ........................... 13

Gas Supply and Piping ...................... 14-15

Thermostat Installation...................... 15-16

Start Up Procedure ......................... 17-18

Operating Your Furnace ..................... 18-23

How To Care For Your Furnace ............... 24-25

Furnace Technical Information .................. 25

TROUBLESHOOTING CHART ................ 26-27

Replacement Parts ......................... 28-35

Blower Accessory (2901) .................... 36-37

SERVICE HINTS ...................... Back Cover

How To Order Repair Parts............. Back Cover

Your Warranty

The Manufacturer, Williams Furnace Co.. warrants this wall furnace or heater to the original purchaser under the following conditions: LIMITED ONE-YEAR WARRANTY

1. Any part thereof which proves to be defective in material or workmanship within one year from date of original purchase for use will be repaired or replaced at the Manufacturer's option, FOB its factory.

2. No liability is assumed by the Manufacturer for removal or installation labor costs, nor for freight or delivery charges,

LIMITED EXTENDED WARRANTY

1. In addition to the above limited one-year warranty on the complete unit, any heat exchanger which burns out or rusts under normal installation, use and service conditions during a period of nine years following expiration of the one-year warranty period will be exchanged for a like of functionaJly similar part, FOB Manufac-

turer's factory.

2. No liability is assumed by the Manufacturer for removal or installation labor costs, nor for freight or delivery charges.

LIMITATIONS

1. THIS LIMITED WARRANTY IS THE ONLY WARRANTY MADE BY THE MANUFACTURER. IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR

ANY PARTICULAR PURPOSE ARE LIMITED TO THE SAME ONE YEAR TERM AS THIS EXPRESS WARRANTY. UNDER NO CIRCUMSTANCES SHALL THE MANUFACTURER BE LIABLE FOR INCIDENTAL, CONSEQUENTIAL, SPECIAL OR CONTINGENT DAMAGES OR EXPENSES ARISING DIRECTLY OR INDIRECT-

LY FROM ANY DEFECT IN THE PRODUCT OR ANY COMPONENT OR FROM THE USE THEREOF THE REMEDIES SET FORTH HEREIN ARE THE EXCLUSIVE REMEDIES AVAILABLE TO THE USER AND ARE IN LIEU OF ALL OTHER REMEDIES.

Some states do not allow limitations on how long an implied warranty lasts, and some states do not allow the exclusion or limitation of incidental or consequential damages, so the above limitations or exclusions may not apply to you.

2. This warranty does not include any charge for labor or installation.

3. This warranty does not extend to painted surfaces nor to damage or defects resulting from accident, alteration, misuse or abuse, or improper installation.

4. This warranty does not cover claims which do not involve defective workmanship or materials.

DUTIES OF THE CONSUMER

1. The heating equipment must be installed by a qualified installer and operated in accordance with the installation and homeowner's instructions furnished with the

equipment

2. Any travel, diagnostic costs, service labor, and labor to repair the defective unit will be the responsibility of the owner.

3. A bill of sale, cancelled check, payment record or permit should be kept to verify purchase date to establish the warranty period

4. Have the instafler enter the requested information in the space below.

GENERAL

1. The Manufacturer neither assumes nor authorizes any person to assume for it any other obligation or liability in connection with said equipment.

2. Service under this warranty should be obtained by contacting your dealer. Provide the dealer with the model number, serial number and purchase date verification.

3. If. within a reasonable time after contacting your dealer, satisfactory service has not been received, contact: Customer Service Department, 225 Acacia St.. Colton. CA 92324, for assistance,

4. THIS WARRANTY GIVES YOU SPECIFIC LEGAL RIGHTS. AND YOU MAY ALSO HAVE OTHER RIGHTS WHICH VARY FROM STATE TO STATE.

INSTALLATION INFORMATION

Model No,

Orig. Purchaser Address.

Serial No.

City and State Zip Dealer

Address City and State. Zip

Installation date Signed by_ .(Dealer or authorized representative who certifies that this appliance has been installed in accordance with Manufacturer's instructions and

local codes.)

--2--

A Word From The Manufacturer

Dear Customer, Toset up our furnace assembly procedures, several hundred quafity assurance, safetyaudit and design performance tests

have been conducted according to the standards provided by the American National Standards Institute, the Department of Energy and our certification agency -- the American Gas Association Laboratories.

This was done to assure you of receiving the best value and most reliable appliance of its type available today. We are confident that your Williams furnace can provide you years of low cost, efficient, heating comfort. Thank you for purchasing a Williams furnace.

Sincerely. Employees of Williams Furnace Company

Introduction

Please read our instructions before you install and use your furnace. This will help you obtain the full value from this fur-

nace. It could help you avoid needless service costs, if the answer to the problem is found within this instruction manual.

Basic Description

Vented wall furnaces are shipped ready to install in a 2 x 4 stud wall, with studs 16 inches center to center.

Always consult your local heating or plumbing inspector, building department or gas utility company regarding regulations, codes or ordinaces which apply to the installa-

tion of a vented wall furnace. No electric power is required unless furnace is equipped

with an optional blower accessory.

The efficiency rating of this appliance is a product ther-

mal efficiency rating determined under continuous operating conditions and was determined independent of any installed system.

Single wall models described in this manual, are install- ed in a 2 x 4 stud wall between studs spaced 16 inches center to center, or may be surface mounted to a wall us-

ing free standing kit 4901. Warmed air is discharged into the room in which the fur-

nace is located. The furnace contains a single multi-slot gas burner.

Combustion air is drawn in from the room where the fur- nace 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 equipment is not supplied with furnace, but

may be obtained from WILLIAMS.)

Convection causes room air to circulate from the floor up- ward along the front, back, and side of the heat exchanger,

and then back to the room. The furnace heat exchanger is built of heavy gauge steel

treated for corrosion resistance. The furnace cabinet is also constructed of heavy gauge steel and has a neutral

beige color enamel paint finish. The front of the cabinet is fully Iouvered.

The furnace controls are located behind an access door on the lower front of the furnace. All models are equipped

with AGA/CGA listed gas valves and pilots. Models: 2509611, 2509612, 3509611, 3509612, 5009611,

5009612 are equipped with a built-in thermostat control. Models: 2509621, 2509622, 3509621, 3509622, 5009621,

5009622 are supplied with a wall thermostat. NOTE, ALL MODELS:

This appliance 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 ven- ting system or tampering with the vent safety shutoff system can result in carbon monoxide (CO) poisoning and

possible death.

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 "Na- tional Fuel Gas Code."

Obtain from--American National Standards Institute, Inc., 1430 Broadway, New York, N.Y. 10018. In Canada:

CAN/CGA B149.

--3--

Safety Rules

WARNING

READ THESE RULES AND THE INSTRUCTIONS

CAREFULLY. FAILURE TO FOLLOW THESE

RULES AND INSTRUCTIONS COULD CAUSE A MALFUNCTION OF THE FURNACE. THIS COULD RESULT IN DEATH, SERIOUS BODILY INJURY,

AND/OR PROPERTY DAMAGE.

INSTALLATION MUST CONFORM TO LOCAL CODES. IN

THE ABSENCE OF LOCAL CODES, INSTALLATIONMUST CONFORM WITH THE NATIONAL FUEL GAS CODE, ANSI Z223.1. THE APPLIANCE, WHEN INSTALLED, MUST BE

ELECTRICALLY CONNECTED AND GROUNDED IN

ACCORDANCE WITH LOCAL CODES OR, IN THE ABSENCE OF LOCAL CODES, WITH THE CURRENT

NATIONAL ELECTRICAL CODE ANSI/NFPA NO. 70.

IN CANADA

1. INSTALLATION MUST CONFORM TO LOCAL CODES OR, IN THE ABSENCE OF LOCAL

CODES, THE CURRENT CAN/CGA B149 IN- STALLATION CODE.

2. THE APPLIANCE, WHEN INSTALLED,MUST BE ELECTRICALLY CONNECTED AND GROUND-

ED IN ACCORDANCE WITH LOCAL CODES OR, IN THE ABSENCE OF LOCAL CODES, WITH

THE CURRENT CSA C22.1 CANADIAN ELEC- TRICAL CODE.

3. FIELD CONVERSIONS FOR HIGH ALTITUDE ARE NOT PERMITTED IN CANADA.

4. REFERENCE IS MADE IN THIS MANUAL

REGARDING GAS TYPE AS L.RG. BE ADVISED

THAT L.P.G. IS NOT AVAILABLE IN CANADA,

REFER TO PROPANE/L.R GAS.

USE ONLY MANUFACTURER'S REPLACEMENT PARTS. USE OF ANY OTHER PARTSCOULD CAUSE

INJURY OR DEATH.

DO NOT install this furnace in an alcove.

DO NOT install these furnaces in a travel trailer, recreational vehicle or mobile home.

MAINTAIN all clearances specified in section "Locating Wail Furnace and Thermostat" and "Vent

Installation."

BE SURE furnace is for type of gas to be used. Check

the rating plate by the gas valve in the lower cabinet.

Do not change it to use other gases. Unsafe opera-

tion could result and could cause bodily injury and death.

For Natural gas, the minimum inlet gas supply

pressure for the purpose of inputadjustment is 5" col-

umn. The maximum inlet gas supply pressure is 7"

water column.

For L.F_gas, the minimum inlet gas supply pressure

for the purpose of input adjustment is 11" water col-

WARNING

DO NOT USE THIS HEATER IF ANY PART HAS BEEN UNDER WATER. IMMEDIATELY CALL A QUALIFIED SERVICE TECHNICIAN TO INSPECT THE HEATER AND TO REPLACE ANY PART OF THE CONTROL SYSTEM AND ANY GAS CONTROL WHICH HAS BEEN UNDER WATER.

umn. The maximum inlet gas supply pressure is 13"

water column.

ANY SAFETY SCREEN, GUARD OR PARTS RE-

MOVED FOR SERVICING ANAPPLIANCE MUST BE REPLACED PRIOR TO OPERATING THE AP-

PLIANCE TO AVOID PROPERTY DAMAGE, BODILY INJURY OR DEATH.

INSTALL the furnace vent directly tothe outdoors, so

that harmful gasses willnotcollect insidethe building. Follow the venting instructions for your type installa- tion exactly. Use only the type and size of vent pipe

and fittings specified.

9. BE SURE to provide for adequate combustion and ventilation air. See page 7. The flow of this air to the

furnace must not be blocked.

10. NEVER vent flue gases intoanother room, a fireplace

or any space inside a building. This could cause pro- perty damage, bodily injury or death.

11. NEVER test for gas leaks with an open flame. Use

soap suds to check all gas connections. This will avoid

the possibility of fire or explosion.

12. ALLOW furnace to cool before servicing. Always shut off electricity and gas to furnace when working on it.

This will prevent any electrical shocks or burns.

13. DUE TO HIGH TEMPERATURES, locate the furnace out of traffic and away from furniture and draperies.

14. ALERT children and adults tothe hazards ofhigh sur- face temperature and to keep away to avoid burns or

clothing ignition.

15. CAREFULLY supervise young children when they are in the same room with the furnace.

16.

DO NOT place clothing or other flammable material on or near furnace.

17.

INSTALLATION and REPAIR must be done by a quali- fied service person. The appliance should be inspected before use and at least annually by a professional serv- ice person. More frequent cleaning may be required

due to excessive lint from carpeting, bedding material,

etc. It is imperative that control compartments, burners

and circulating air passages be kept clean.

18.

BEFORE INSTALLING: Toavoid electrical shock, turn

off electrical circuits that pass through the wall where you are going to install the furnace.

19.

BE AWARE of good safety practices by wearing per-

sonal protective equipment such as gloves and safe- ty glasses toavoid being injuredby sharp metal edges

in or around furnace andwhile cuttingor drillingholes in wood and or sheet metal.

20.

CAUTION: Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper

and dangerous operation. Verify proper operation after

servicing.

--4w

Unpack Your Furnace

The shipping carton contains the furnace and the items

needed to install it:

The furnace isshipped assembled. The cabinet must be

removed for the furnace installation.

1. Open carton and carefully lift off cabinet face panel.

2. Remove small parts bag and header plate from lower portion of furnace.

3. Remove thermostat (wall thermostat models).

Basic Tools Needed

Hand drill or properly grounded electric drill. Expansion bit 1/2 inch to 1-5/8 inch or 1/2 inch and

1-1/2 inch blade bits

118 inch drill bit (metal) 6 foot folding rule or tape measure Screwdriver (medium blade)

Pliers (wire cutting) Hammer

Hole saw - 2 inches

4. Stand Furnace upright.

5. Properly dispose of shipping material.

NOTE

Check the burner rating plate, located in burner compart-

ment, to make sure your furnace is equipped to operate

on the type of gas available (either Natural or L.P. Gas).

DO NOT convert unit from Natural Gas to L.R Gas or from L.R Gas to Natural Gas.

Screwdriver (phillips head) Stud Locator or small finish nails

Tin Snips 8 inch adjustable wrench

12 inch adjustable wrench

Key hole saw or sabre saw 2 - 10 inch or 12 inch pipe wrenches Gloves and safety glasses

Basic Materials

Pipe and fittings to make connections to furnace. Pipe Joint Compound resistant to L.R gases. *Electrical wiring supplies as needed.

*Minimum wire size is #14 gauge copper.

*Electrical supplies only required if accessory blower is

being installed.

Optional Accessories

Free Standing Kit 4901 may be used with all single models. This kit allows the furnace to be mounted on the

surface of a wall.

Rear Outlet Register 6901 may be used with all single

models when recessed into a standard 2 inch x 4 inch in- terior stud partition. This kit directs some of the heated

air into the room opposite the one in which the furnace

is installed. Blower Accessory 2901 may be used on all models and

mounts on top of the furnace. This blower increases cir- culation of warm air through the heated space. A 115V outlet adjacent to the furnace is required.

Oval B/W Vent Kit 9901

vent kit contains 4 feet of oval double-

walled vent pipe, plate spacers and base plate or hold-

A type "BW" gas vent kit for vertical venting such as a

WILLIAMS Oval Vent Kit 9901.

Extra lengths of double-wall vent pipe may be needed,

depending on height or length of run.

down plate that starts the venting from the top of furnace. See Page 12 for some additional items you may need.

ALL MODELS: Decorator Face Panel Colors

Various Face Panel colors may be used on all models. All are constructed of heavy gauge steel with your choice of colored enamel paint finish.

4915 (Almond) 4916 (Black) 4917 (Red)

4918 (white) NOTE

Kits are identified on their carton by the manufacturing number 4901, 6901 and 2901 respectively.

--5--

Installing Your Wall Furnace

The following steps are all needed for proper installation and safe operation ofyour furnace. If you have any doubts

as to any requirements, check with local authorities.

All of CHECKS AND ADJUSTMENTS in the Start-Up Procedure on page 17 are vital to the proper and safe

operation of the furnace. Be sure they are done.

Obtain professional help where needed.

Locating Wall Furnace & Thermostat

The furnace is installed between 2 x 4 inch wall studs spaced on 16 inch centers or stud space can be framed

in to 16 inches. See page ft (Fig. 9). Consider the following points before attempting to install

the furnace.

CAUTION

Do not make cut-outs in wallorceiling before check-

ing inthe attic for ceilingjoist locations and proposed venting.

1. Place the furnace near the center of the space to be heated for good air circulation. Do not put it behind a

door or draperies. Do not install it in a closet, alcove,

hallway or other confined space where the furnace could be isolated by closing doors to the heated space. Do not locate the furnace where a door could swing

over the front panel, or where circulation could be

retarded by furniture or cabinets. For large homes or homes with spread-out floor plans,

two or more furnaces are recommended.

MINIMUM SPACE

T MIN.

CEILING

:URNACE

WALL

I 1 2-1/2 APPROX.

16" MIN,

4" MIN. TO CLOSEST SIDE WALL

NOTE: MAXIMUM

RECESS DEPTH OF SINGLE MODELS IS 41/£'

"_ L__ BARE FLOOR

2. Check the minimum spacing needs as shown in Fig. 1.

3. The top of the furnace must be at least 16 inches from the ceiling.

WARNING: DANGER OF PROPERTY DAMAGE, BODILY INJURY OR LOSS OF LIFE. DO NOT INSTALL FURNACE I

IN ANY AREA WHERE OXYGEN IS IN USE.

When furnace is properly installedwith legs restingon floor plate, it sets the dimension from the face panel

to the bare floor. (21/2inches approximately depending on the thickness of floor plate).

A protectivebarrier (metal or wood), cut to match width

and depth of furnace, should be used to cover over any floor coverings such as carpet or sheet vinyl that might

be finished off under the furnace.

NOTE

At no time should the dimension from the bottom of the face panel to the protective barrier be less than 11/2

inches.

5. The side of the furnace may be as close as 4 inches to a wall. The recessed portion may have 0 inch

clearance to combustible material.

To provide adequate clearance and service access, the front of the furnace must face the open room. Do not

place obstructive furniture closer than four feet to front

of cabinet.

After picking a location, inspect the wall, floor, attic and

roof areas. Make sure there are no pipes, wiring,

bracing, etc., that would interfere with furnace or vent installation.Ifrequiredmove them orpick a new location.

Be sure that gas piping and electrical wiring can be brought to the location. See sections covering piping

and electrical wiring for your type of furnace mounting. (Electrical wiring only required for optional blower

accessory.)

If your furnace is a wall thermostat model, locate the

thermostat about 5 feet above the floor on an inside wall where it will sense the average room temperature.

Avoid the following:

HOT SPOTS: Concealed pipes or

ducts

Fireplaces Registers

TV sets Radios

Lamps Direct sunlight

Kitchen

COLD SPOTS: Concealed pipes or

ducts

Stairwells-drafts Doors-drafts

Unheated rooms on

other side of wall

DEAD SPOTS:

Behind doors

Corners and alcoves

After picking a location that meets the requirements make sure there are no pipes, wiring, or anything else that would interfere with thermostat installation. If required, move

them or pick a new location.

--6--

Combustion & Ventilation Air

WARNING

DANGER OF ILLNESS

BODILY INJURY OR DEATH THE FURNACE AND ANY OTHER FUEL BURNING APPLIANCE MUST BE PROVIDED WITH ENOUGH

FRESH AIR FOR PROPER COMBUSTION AND VENTILATION OF FLUE GASES. MOST HOMES WILL REQUIRE THAT OUTSIDE AIR BE SUPPLIED

INTO THE FURNACE AREA.

The high cost of energy for home heating has brought

about new materials and methods used to construct or remodel most current homes. The improved construction

and additional insulation has reduced the heat loss and made these homes much tighter around windows and

doors sothat infiltrated air is minimal. This creates a prob- lem to supply combustion and ventilation airfor gas-fired or other fuel burning appliances. Any use of appliances that pullair out of the house (clothes dryers, exhaust fans,

fireplaces, etc.) increases this problem and appliances could be starving for air.

The combination of a tight energy efficient home with the use of exhaust fans, fireplaces, clothes dryers, and gas appliances results in more and more air being drawn from the house until fresh air may be sucked into the house down the furnace flue or fireplace chimney. Carbon

monoxide can be the result. Carbon monoxide or "CO" is a colorless, odorless gas produced when fuel is not

burned completely or when the flame does not receive sufficient oxygen. Automobiles, charcoal, wood fires and

improperly vented or air-starved coal, oil and gas furnaces or other appliances can produce carbon monoxide.

Be aware of these air starvation signals:

1. Headaches, nausea, dizziness

2. Excessive humidity -- heavily frosted windows, moist "clammy" sensation.

3. Fireplace smokes, won't draw

4. Furnace flue backs up

AIR REQUIREMENTS

The requirements for providing air for combustion and ven- tilation are listed in the National Fuel Gas Code NFPA

54/ANSI Z223.1 (in Canada: CAN/CGA B149). Most homes

will require that outside air be supplied to the furnace area

by means of ventilation grilles or ducts connecting direct- ly to the outside or spaces open to the outdoors such as attic or crawl space. The only exception is when the fur-

nace area meets the requirements and definitions for an unconfined space with adequate air filtration.

All air openings and connecting ducts must comply with

the following: IF THE FURNACE IS INSTALLED IN AN AREA WITH

ANOTHER GAS APPLIANCE(S), THE TOTAL INPUT

RATING OF ALL APPLIANCES MUST BE CONSIDERED

WHEN DETERMINING THE FREE AREA REQUIRE-

MENTS FOR COMBUSTION AND VENTILATION AIR

OPENINGS.

WARNING

DANGER OF PROPERTY DAMAGE,

BODILY INJURY OR DEATH

EVEN WHEN HOUSE MEETS REQUIREMENTS FOR UNCONFINED SPACE WITH ADEQUATE AIR

INFILTRATION IT IS RECOMMENDED THAT A FRESH AIR INTAKE BE INSTALLED TO LESSEN

THE POSSIBLE DANGERS FROM ANY FUTURE CHANGES ON THE HOME,

Ducts must havethe same cross-sectionalarea as the free area of the openings to which they connect.

The minimum dimension of rectangular air ducts must not

be less than 3 inches in length or 3 inches in height.

LOUVERS/GRILLES AND SCREENS COVERING FREE AREA OPENINGS

If screen is used to cover opening(s), it must not be smaller

than 1/4inch mesh. Use the free area of a louver or grille to determine the size opening required to provide the free

area specified. If the free area is not known, assume a 20% free area for wood and a 60% free area for metal

louvers or grilles.

EXAMPLE 1. FURNACE LOCATED IN UNCONFINED SPACE,"

*An unconfined space must have avolume of a minimum 50 cubic feet per 1000 Btuh of total of all appliances in area. Adjoining rooms may be included only if there are no doors between the rooms, or if special provisions are made such as ventilation grilles installed between con-

necting rooms.

Fig. 4, page 8 shows the minimum area in square feet,

based on 8 foot ceiling heights, required for different Btuh

input ratings.

A. INFILTRATION AIR

If your furnace is in an open area unconfined space*)

the air that leaks through the cracks around doors

and windows may be enough for combustion and

ventilation air. The doors should not fit tightly. The

cracks around windows should not be caulked or

weather stripped.

VENT PIPE

DRAFT HOOD

__1

,A,C.

TYPICAL

]

WATER

HEATER

WALL

FURNAC E OPENING

\DRAFT

HOOD

--7--

Combustion & Ventilation Air (Con't)

To determine if infiltration air is adequate, perform the following checks:

1. Close all doors and windows. 11you have a fire- place, start a fire and wait until flames are burning

vigorously, (or flue damper can be closed),

2. Turn on all exhausting devices, such as:

- kitchen and bathroom exhaust fans.

- water heaters (gas and electric).

3. Turn on all vented gas appliances, such as:

- heating equipment (includes any room heaters)

- water heaters.

4. Wait ten (10) minutes for drafts to settle down.

5. Check for drafthood spillage at each appliance. (Hold a lighted match 2 inches from draft opening. See Fig. 2, page 7).

B. No Spillage

Match flame pulls toward drafthood -- this indicates sufficient infiltrationair. Return exhausting devices and

appliances to the condition you found them.

C. Drafthood Spills

If there is spillage at a drafthood (match goes out or flame wavers away from drafthood):

1. Check for plugged flue connectors and chimneys. Check and repair stoppage and test again.

2. If you have a fireplace, open a window or door near the fireplace and then check for spillage.

a. If spillage stops, do not use the fireplace without

a nearby window or door open until you can supply fresh air by a permanent duct.

3. If you have kitchen and bathroom exhaust fans, turn them off and check for spillage.

a. If spillage stops, do not use exhaust fans until

you can supply fresh air by a permanent duct. Circuit breakers for fans should be turned off if

possible.

WARNING

DANGER OF ILLNESS,

BODILY INJURY OR DEATH

DRAFTHOOD SPILLAGE WITH UNOBSTRUCTED VENTS, INDICATES THAT ADDITIONAL AIR

MUST BE BROUGHT INTO THE STRUCTURE FROM THE OUTSIDE. KEEP A WINDOW OPEN

(MINIMUM 2 INCHES) NEAR THE APPLIANCE

UNTIL A PERMANENT AIR DUCT IS INSTALLED.

Provide an opening(s) having a total free area of 1 sq. inch per 4000 Btuh of the total of all appliances. The required area is shown in Fig. 7, page 9.

FRESH AIR DUCT

HOLES FROM VENTILATED ATrJc INTO STUD SPACE

SEE FrG. 8

AIR GRILLE TO STUD SPACE

I 12" MAXFROM FLOOR

HOLES FROM VENTILATED CRAWL SPACE INTO STUD SPACE

HOLE IN BOTTOM OR BACK OF FURNACE INTO OPEN STUD SPACE OR CRAWL SPACE

SEE FIG 7

1. Duct must terminate at a point not more than 1 foot above the floor.

2. Duct size must be at least I inch of free area for each 4000 Btuh of input of all appliances in area.

MINIMUM AREA IN SQUARE FEET

4000 Btuh Per

Square Inch

Opening

Round Rectangular

Duct Duct

4"DIA. 3"X3"SQ. 4"DIA. 3"X3"SQ. 4"DIA. 3"X4"SQ.

4"DIA. 3"X4"SQ. 4"DIA. 3"X5"SQ.

41!2"DIA. 3"X5"SQ.

Max. Btuh

Input

30,000

35,000

40,000

45,000

50,000 60,000

*Unconfined Space

Min. Area In Sq. Ft,

8' Ceiling Height

188 219 250 281 312 375

4. Spillage means air starvation and a fresh air duct or air intakes must be installed to provide air direct-

ly to the furnace or other gas appliance.

D. If spillage exists or when the furnace is in a building

of tight construction where the windows and doors are weatherstripped, air for combustion and ventilation must be obtained from outdoors or space open to the

outdoors.

*Can be two or more rooms joined by ventilation grilles.

EXAMPLE 2. FURNACE LOCATED IN CONFINED SPACE

If furnace is installed in a confined space, it must be pro-

vided with free air for proper combustion and ventilation

of flue gases by one of the following methods:

--8--

Combustion & Ventilation Air (Con't)

A. All Air From Inside Building: If the confined space adjoins an unconfined space as

defined in EXAMPLE 1, providetwo permanent openings, one within 12 inches of the top and one within 12 inches ofthe bottomof the room connecting directly to unconfin- ed space. Each opening must have afree area of at least 100 square inches or 1 square inch per 1000 Btuh com- bined input of appliances in one room if combined input

exceeds 100,000 Btuh.

WARNING

DANGER OF PROPERTY DAMAGE,

BODILY INJURY OR DEATH

THE ADJOINING UNCONFINED SPACE MUST

HAVE ADEQUATE AIR INFILTRATION AS DEFINED IN EXAMPLE 1.

FOR EXAMPLE: Your furnace is rated at 50,000 Btu per hour.The water heater is rated at 30,000 Btu per hour.The total is80,000 Btu per hour. Youneed two grilles, each with

100square inches of free opening. Metal grilleshave about

60% free area, so you need two metal grilles each with

160 square inches of Iouvered area.

Refer to Fig. 5, which shows grille installation. Using the previous example, the two connecting rooms

plus the closet must equal at least 500 sq. feet to handle

the combined input 50,000 plus 30,000.

outdoors or spaces open to outdoorssuch as atticor crawl

spaces. Provide two permanent openings, one within 12 inches of

top, one within 12 inches of bottom of room connecting

directly,or by using ducts,with the outdoor or areas open

to outdoors.

If opening connects directly to, or with vertical ducts, the

free area of each opening must be at least 1 square inch

per 4000 Btuh combined input of appliances in area. If horizontalductsare used, the free area ofeach opening

must be at least 1 square inch per 2000 Btuh combined input of appliances in area.

FOR EXAMPLE: Your furnace is rated at 50,000 Btu

per hour. The water heater is rated at 30,000 Btu per hour. The total is 80,000 Btu per hour. You need two

grilles, each with 20 square inches of free opening, unless connected by horizontal ducts which would re-

quire each grille or opening to have a free area of 40 square inches.

3 OR CRAWL SPACE

CH_MN[ y

OR GAS VENT

GRILLES CONNECTING ROOMS TO

MAKE UNCONFINED SPACE

VENTILATION GRILLES CONNECTING TWO ROOMS TO MEET UNCONFINED

$PAC_

I I

, I

200 SO IN

MINIMUM

BETWEEN

LARGE ROOMS

1<[ COMMENOt O

FRESH AIR DUCT rPilO CRAWL $PAC_ _N _ U_NACE AREA

OR IN CLOS[T W_IH WAIER HLA1FR

so _N

100 So

B. All Air From Outdoors: If confined space doesn't adjoin an unconfined space

(defined in EXAMPLE 1) then air must be provided from

OUTLET AIR

o-=

PNLEI AIR

*Openings for inlet or outlet air should not be made into attic area if attic is equipped with a thermostat controlled power vent.

FREE AREA IN SQ. INCHES

EACH OPENING (FURNACE ONLY)

BASED ON ONE SQ. INCH PER 4000 BTUH

Req'd Number of Holes

Furnace

Btuh/Input

30,000 35,000 40,000 45,000 50,000 60,000

Sq. Inch

of Opening

7.5

8.75

10.0

11.25

12.5

15.0

Sill or Header Plates

1V=" 2" 3"

7 4 8 5

9 5 10 6 11 6

13 8

3 3 3 4

--9--

Recessed Mount Installation

NOTE: Model Series 25096 and 35096. The maximum recess

depth, from rear of furnace forward is 41/=''.

FIND THE STUDS AND CEILING JOISTS Use astud Iocatoror smallfinishing nails. Repeatedly drive

and remove a nail into the wall inthe area of the stud until

it is located. Then find the inside edge of the stud. Leave

the nail at this location. The other stud should be about 141/2inches from the one

found. Drive finishing nails on the insideof this stud. Drew wall cut outto requiredsize as shown in Fig. 8. Ifwall studs

are not on 16 inch centers see "Close Off Stud Space." CUT WALL OPENING (See Caution on page 6)

All models: Cut wall opening 14-3/8 incheswide and 66-1/8

inches high measured from top of floor plate. See Fig. 8. All corners must be square.

INSTALLATION OF REAR OUTLET REGISTER (If Used) The optional rear outlet register 6901 can be installed

when furnace is recessed. In new construction, install the

HEADER PLATE AND GAS SUPPLY OPENINGS

rear outlet plasterground at the same time you install the header plate. For existing construction, make necessary

cutout and install the plasterground just before you install the furnace. See instructions packed with kit and Fig. 8.

Do notallow wall finish material to projectintothe furnace recess.

Do not installrear outlet registerwhere grille may be block- ed by door swing, curtains or any other obstruction.

GAS SUPPLY OPENING A hole mustbe drilled for the gas line. See Fig. 8 for alter-

nate gas line openings.

Decide whether the gas line witl come through the floor or wall.

Drill a 11/2 inch hole in wall or floor (Fig. 8) as needed. CLOSE OFF STUD SPACE (If Required)

If studs are not on 16 inch centers, cut the hole for the

furnace next to an existingstud and frame inthe other side

using a 2x4 and spacer blocks as required. See Fig. 9, page 11.

115V. OUTLET FOR

TOP

BOTTOM

HEADER NAILING

FLANGE

MODELS

2509611 2509612

2509621 2509622

AND

3509611 3509612 3509621 3509622

ALTERNATE GAS

62V4

OF HEADER PLASTERGROUND

OPTIONAL REAR REGISTER

PLASTER-

TO TOP

GROUND

NAIL

FLANGE

LOCATION

PLATE

FINtSHEO

FLOOR

--10--

Recessed Mount Installation (Con't)

CLOSE OFF STUD SPACE

PLA'flE

I_- EXISllNG STUD

I]I

NEW STUD

III

_S_NG S'PJD -_

•.-- 14--3/8"

[

FLOOR

_A_

[ I I BLOCKS

III

CUT PLATE OPENING (RECESSED VENTING) Cut away the ceiling plate between the studs where the

furnace is to be installed. Work from the top in the attic. If there is no access to the top, remove the wall covering

between the two wall studs,all the way to the ceiling. Work through this opening.

Cut out the entire plate so the plate edges will be even with the inner face of the 2x4 studs (Fig. 10).

INSTALL VENT BASE PLATE (HOLD-DOWN PLATE) Position base plate on top of header plate and fasten with

screws. Note: These items are included in Vent Kit 9901.

HEADER PLATE (VENT SUPPORT) Measure up 621/4 inches from the top offloor plate. Place

a mark on each stud at this distance. See Fig. 8, page 10. Place the header plate between the studs with the lower

edges even with marks on the studs. Make sure header

plate is level.

All models: Locate rear edge of nailing tabs at back of 2x4 stud which will center the vent collar in the wall. Nail

header plate to studs. See Fig. 8, page 10.

INSTALL CEILING PLATE SPACER (RECESSED MOUNT) Refer to Fig. 10.

Two ceiling plate spacers are in the B/W Vent Kit. They must be fastened along each long edge ofthe ceiling hole to hold the oval vent pipe in the center of the hole.

Nail the ceiling plate spacers either across or inbetween the cut out section ofceiling plate. If nailed between, end

must be bent at 90 degrees.

Ceiling plate spacers preserve structural strength and posi- tion oval vent pipe in the center of the cut out opening.

No electric power is required unless furnace is equipped

with an optional blower. Do not connect 115V service line to the gas control valve or wall thermostat.

ELECTRICAL OUTLET (Optional) If youare installingoptional bloweraccessory with the fur-

nace, rough-in a 115V electrical outlet as shownin Fig. 11.

CEILING PLATE SPACERS

RECESSED MOUNT

OPTIONAL ELECTRICAL OUTLET

BLOWER AGCT

62V4 ,

14 3/8

CEILING

PLATE SPACERS NAILED IN BE'nNEEN CEILING PLATES OR ACROSS FACE IF

ACCESSIBLE

--11 m

Surface Mount Installation

The use ofoptional Free Standing Kit No. 4901 allows fur- nace to be mounted on the surface of a wall. See detailed

instructions packed with kit.

Vent Installation

The vent installation must comply with all local codes and ordinances. If in doubt, consult your local codes or

inspector.

The furnace vent must be directed to the outdoors so that

harmful combustion gasses will not collect inside the building.

This furnace must not be connected to a chimney flue serving a separate solid-fuel burning appliance.

NOTE:

U.L. listedB/W Vent Kit9901, You must provide other items, not contained inkit, necessary tocomplete your specific venting situation through the roof. Refer to

typical venting system shown in Fig. 12.

WARNING

This product is design certified by A.G.A./C.G.A. to be in-

stalled with a U.L. listed type "B" approved vent and type "B/W" approved vent. See Fig. 12. Older styleterra-cotta,

transite, clay, concrete or masonary type vent pipe can- not be used with this appliance. This older type vent pipe

will not heat fast enough to establish a draft, which will result in improper venting of combustion products. Con-

sequently, this could cause the vent safety control system to shut down the furnace.

Vent Installation (Con't)

Type B/W gas vent shall extend from the header plate of the vented wall furnace to a point above the highest

ceiling plate within a stud space through which the vent passes, without any offsets or crossovers therein. After a type B/W gas vent passes through the highest ceiling plate within a stud space above the furnace which it serves, the vent system may be completed with a type B gas vent, of the same manufacturer (do not mix brands ofpipe), andoffsetsor breakoversshall not be greaterthan 45 degrees from vertical. Refer to (UNIFORM MECHANICAL CODE).

Install oval to round adapter. Complete the piping exten- ding it through the roof. Use a 4 inch round double wall (Type B) vent pipe, roofflashing, storm collar,and vent top as shown. The vent cap mustbe at least 2feet higherthan any pointthat is within 10feet horizontally ofthe vent cap.

There must be at least 1 inch clearance between the vent

pipe and any combustible material.

TYPICAL VENT INSTALLATION

"dYQtTCAP MUST BE MINIMUM 2 FEET HIGHER 1HAN ANY POINT WI1HIN 10 FEET

0F '4ENT CAP

HEIGHTFROMHEADER PLATETOVENTCAPTOP

MUSTBE S F£_ MINIMUM

1 INCHMIH.CLEARANCETOCOMBUSllBLES

_,= USTE_ 4." ROUNDB VISIT

$ OVALTOROUNDADAPTER

CAP

STORM

ROOF

IMPORTANT

Area above header within the stud space MUST be

kept clear of any attic insulation to allow the free cir- culation of air around oval vent piping. In some areas the building code requires the use of an attic shield.

NOTE

The B/W vent must extend through the ceiling and roof

terminating at least 12 feet above the finished floor on

which the furnace rests.

Firstvent pipe offset (if required) must not be any closer

than 2'-0" from header plate.

INSTALL FURNACE VENT (RECESSED MOUNT)

Lower a4 foot length of oval, double wall vent pipe through

the place spacers to the hold-down plate.

Push the vent pipe intothe hold-down plate until it is com- pletely seated. (Hold-down cleat will engage the groove

in the vent pipe.)

COMPLETE THE VENTING

Refer to Fig. 12.

$ OVALB/_V VENT (DOIJBLE WALL)

$ PLATESPACER-

(RECESSEDMOUNT)

2 R£Q'D

* eASE PLATE (HOLD-DOWN) OR

STARTERPLATE SCREWEDDOWN TO HEADERPLAIT-,,

NOTE

HEADER PLATE AND GASKETS PRO_/1D£D WITH FURNACE

TAKE CARE NO'r TO DISllJRB _ GLUED TO

OF HEADER. _ MA'r_41AL

MUST NOT BLOCK FLUE Ex'nsNsICH \

* CONTAINED IN OVAL B/W

(STARTER) VENT KIT NO. 9901

"° NOT PROVIDED WITH KITS

AVAILABLE

50,000 BTUH FURNACE AND HEADER NOT SHOWN.

NOTE: FLUE COLLAR GASKET, NOT REQUIRED ON MODELS 5009611,

5009612, 5009621 & 5009622

--12--

Mount The Furnace

POSITION FURNACE

f B/W VENT

MODELS

2509612 2509622 3509612 3509622

AND

2509611

2509621

3509611 3509621

Clear the recess of a!l debris, remove any wood plastergrounds. Stand furnace in front of recess, holding

the furnace body at an angle. Insert flue collar into open- ing in the header plate and raise furnace carefully. See

Fig. 13. Swing bottom of furnace into recess with front edges of legs flush with 2x4 floor plate. Nail through legs

into studs or floor plate. See Fig. 14.

DO NOT DAMAGE GASKET GLUED TO UNDER- SIDE OF HEADER PLATE WHEN PLACING

FURNACE IN WALL.

IMPORTANT I

URING FURNACE

LEGS NEAR FLOOR PLATE

BOTTOM NAIL FURNACE OF FURNACE LEG TO STUD OR

(SEE DETAIL BELOW)

LEG

_ FLOiR PLATE

ANGLE

_FLOOR PLATE

IMPORTANT

AVOID NAILING THE LEGS SO TIGHTLY THAT IT

DISTURBS THE INNER FURNACE CASINGS. DO NOT TRY TO FORCE THE FURNACE INTO A

SMALLER-THAN-SPECIFIED RECESS.

REAR OUTLET KIT INSTALLATION (If Used)

CAUTION: Do not installrear outlet kitwhere grille may be

blocked by door swing, curtains or any other obstruction. If Rear Outlet Register 6901 is used, the following pro-

cedure must be complete before placingfurnace body into wall recess. See Fig. 15.Attachspeed nutsto outershield, and remove knock-out plates as follows:

1. Punch in lower corners with screwdriver blade.

2. Break knock-outsideand bottomconnecting tabs: hold screwdriver blade sidewaysagainst tab and strike head of screwdriver lightly with a hammer.

3. Swing plate outward; bend it back and forth to break the top tabs.

After furnace is in position, install rear outlet as shown in

Fig. 16. Have damper in open position when inserting

assembly. Secure register assembly to speed nuts with machine screws furnished.

REMOVING KNOCK-OUT PLATES

INNER SHIELD OF FURNACE

_ 10-24 SPEED

NUT

HOLD SCREWDRIVER -

SIDEWAYS AGAINST

TABS ANO STRIKE

LIGHTLY WITH HAMMER

MODELS

2509612

2509622

3509612 3509622

AND

2509611

2509621

3509611 3509621

--13 m

MOUNTING REAR OUTLET

SHIELDS

PLASTER-

GROUNO-

ASSEMB_

Gas Supply and Piping

Gas control valve, within the furnace, is shipped with a sealed cover gas inlet tapping. Do not remove seal until

ready to connect piping.

WARNING

DANGER OF PROPERTY DAMAGE,

BODILY INJURY OR DEATH.

MAKE SURE THE FURNACE IS EQUIPPED TO OPERATE ON THE TYPE OF GAS AVAILABLE.

MODELS DESIGNATED AS NATURAL GAS ARE TO BE USED WITH NATURAL GAS ONLY. FURNACE DESIGNATED FOR USE WITH LIQUEFIED

PETROLEUM (L.P.) GAS HAVE ORIFICES SIZED FOR COMMERCIALLY PURE PROPANE GAS.

THEY CAN NOT BE USED WITH BUTANE OR A

MIXTURE OF BUTANE AND PROPANE.

GAS SUPPLY

MINIMUM gas supply pressure for NATURAL GAS to the

furnace controlvalve is 5 incheswater column. For natural gas, it must not be more than 7 inches.

Minimum gas supply pressure for L.P. Gas to the furnace

control valve must be at least 11 inches water column. It must not exceed 13 inches.

Gas pressures and input to the burners must notexceed the rated input and pressure shown on the rating plate.

On Natural Gas the manifold pressure should be 4 inches water column. The manifold pressure should be 11 inches

water column for L.R Gas. See page 17 for operation above 2000 feet altitude.

Orifice change may be required to suit gas supplied. Check with your WILLIAMS service department.

ORIFICE SIZES Furnace Technical Information, Page 25, shows the cor-

rectorifice sizes for the different input ratings when using Natural or L.P. Gas.

use compound resistantto actionofliquefied petroleum

gases.

Use ground joint unions.

Install a drip leg (sediment trap) to trap dirt and moisture before it can enter the gas valve. Nipple must be a minimum of 3 inches long. See Fig. 17.

Install a manual shut-off valve.

Provide a 1/8 NPT test gauge connection immediately before the gas supply connection to the furnace.

GAS CONNECTION If installationis for L.P gas, installer use two-stage regula-

tor and make all connections from storage tank to furnace.

Use two pipe wrenches when making the connection to

the valve to prevent turning of, or damage to gas valve. Connection between shutoff valve and burner control

assembly can be made with an A.G.AJC.G.A. design cer- tified flexible connector if allowed by local codes.

Tighten all joints securely.

DROP

I I PIPED

SUPPLY

HO_IZONTAL

TEE

FITTING_ R_SER

_ PIPED

3,n i76 2 mini +-=NIPPLE GAS mINIMUM

I11 o,,

r_ANUAL SHUT OFF SUPPLY

<--- CAP VALVE

i TEE

_FITTING

GAS PIPING The gas supplyline must be of an adequate size to handle

the BTU/HR requirements and length of the run for the

unit being installed. Determine the minimum pipe size from Fig. 18, page 15,

basing the length of the run from the gas meter or source to the unit.

All piping must comply with local codes and ordinances or with the National Fuel Gas Code (ANSI Z223.1 NFPA

No. 54), whichever applies. (In Canada: CAN/CGA B149.) Refer to Fig. 17 for the general layout at the unit. It shows

the basic fittings needed.

The following rules apply:

1. Use new, properly reamed pipe free from chips such as steel or black iron pipe and fittings or other approved

by local codes.

2. Do not thread pipe too far. Valve distortion or mal- function may result from excess pipe within control. Apply moderate amount of good quality dope to pipe

only, leaving 2 end threads bare. If LP gas installation,

PROPER PIPING PRACTICE

2 IMPERFECT CONTROL USE MODiERATE AMOUNT OF DOPE

THREAO PIPt. RIGHT LENGTH LEAVE 2 EI_O YHREADS BARE

--14--

Gas Supply and Piping (Con't)

CHECKING THE GAS PIPING Test all piping for leaks. When checking gas piping to the

furnace with gas pressure at less than 1/2PSI, shut off

manual gas valve for the furnace, if gas piping is to be checked with the pressure at or above 1/2PSI, the furnace and manual shut off valve must be disconnected during

testing. (SEE WARNING BELOW.) Apply soapsuds (or a

liquid detergent) to each joint. Bubbles forming indicates a leak. Correct even the slightest leak at once,

WARNING

DANGER OF PROPERTY DAMAGE,

BODILY INJURY OR DEATH.

NEVER USE A MATCH OR OPEN FLAME TO TEST FOR LEAKS. NEVER EXCEED SPECIFIED PRES- SURES FOR TESTING. HIGHER PRESSURES MAY

DAMAGE THE GAS VALVE AND CAUSE OVER- FIRING WHICH MAY RESULT iN HEAT EX- CHANGER FAILURE. LIQUID PETROLEUM (L.P.)

GAS IS HEAVIER THAN AIR AND IT WILL SETTLE IN ANY LOW AREA, INCLUDING OPEN DEPRES- SIONS AND IT WILL REMAIN THERE UNLESS AREA IS VENTILATED.

NEVER ATTEMPT STARTUP OF UNIT BEFORE THOROUGHLY VENTILATING AREA AND SMELL-

ING NEAR THE FLOOR FOR GAS ODOR.

LENGTH

PIPE-FT.

20 40 60

LENGTH

PIPE-FT.

2O 4O 60

GAS PIPE SIZES

NATURAL GAS

PiPE CAPACITY - BTU PER HOUR

(INCLUDES FITTINGS)

PIPE SIZE.

I/2" 314" I"

92,000 190.000 350,000 63,000 130,000 245,000

50.000 105,000 195.000

L.P. GAS

PIPE CAPACITY - BTU PERHOUR

(INCLUDES FITTINGS)

I/2" j

189,000

129,000

103.000

3/4" I"

393,000 732,000

267.000 504,000 217,000 409,000

Thermostat Installation

Models 2509611, 2509612, 3509611, 3509612, 5009611 and

5009612 utilize a built-in thermostat control system operated by a heat sensing bulb located in the burner compartment.

IMPORTANT

Handle the bulb with care. Do not kink the connect-

ing tubing.

Models 2509621, 2509622, 3509621, 3509622, 5009621 and 5009622 are operated by a millivolt type thermostat. Current to the thermostat issupplied by the pilot generator.

Anticipation settings are not required.

1. If an old thermostat is being replaced and is in a satisfactory location and the wiring appears to be in good condition, use existing wiring. If in doubt, use new

wire.

2. If a new location is chosen or if this is a new installa- tion, thermostat cable must first be run to the location

selected. All wiring must agree with local codes and ordinances. These instructions cover bringing the wire

down from the attic but it can be run from a basement or crawl space using similar methods.

3. Before drilling hole in wall at selected location, drive

a small finishing nail through the ceiling in the corner

of the wall and ceiling above the thermostat location.

Pull the nail out and push a small stiff wire through the hole so it can be found in the attic. Drill a 1/2-inch hole

through the ceiling wall plate (see Fig. 19 page 16).

Probe for obstructions in the partition. Then drill a 1/2-inch hole through wall at selected location for

thermostat.

From the attic, feed the thermostat cable or a stiffwire

through wall until even with thermostat location.

Snag thermostat cable through hole and pull cable

through hole in wallsothat 6 inches of cable protrudes.

Route cable to wall furnace.

CAUTION

Do not run wire behind flanges of Header Plate or

in any location where it might be damaged. Avoid

splicing thermostat wire unless the spliced wires are

properly cleaned, soldered and taped.

NOTE

Use #18 Ga. wire as supplied for maximum length of 20 feet. If longer length isneeded, use #16 Ga. for maximum

length of 25 feet.

m15m

Thermostat Installation (Con't)

MOUNTING THE THERMOSTAT

1. To remove thermostat cover, squeeze both sides and lift. Carefully remove and discard the packing tab pro-

tecting the switch contacts.

2. Connect thermostat wires tothe terminal screws on the back of thermostat base.

3. Push any excess wire back through hole in wall and plug hole with insulation to prevent drafts from affect- ing thermostat operation.

4. Be sure to level thermostat for best appearance, fasten

thermostat base to wall through mounting holes with screws provided.

5. Replace the thermostat cover. NOTE

Refer to installation instructions packed in the thermo-

stat carton if you have any doubt about the above pro- cedures.

Connect thermostat wire, previously run to burner com- partment from thermostat, to control valve as shown in

Fig. 20.

ROUTE THERMOSTAT CABLE

SMALL

FINISH NAIL TO

EOCATE

HEADER

1HERMOSTAT CABt_

THERMOSTAT GENERATOR

RED-_, _--WHITE BLUE

LIMIT SWITCH P172100A (OR)

"_ WILLIAMS

P172200A

GENERATOR THERMOSTAT LIMIT SWITCH

KNOB

GREEN KNOB

WILLIAMS

P295000A (OR) P295001A

--16--

Cabinet installation

PANEL ATTACHING

B*'WVENT_

CASING/

LEGS

SCREW

MODELS

2509611 2509612

2509621 2509622

AND

3509611 3509612

3509621 3509622

(CONTROL)

FLOOR PLAlrE

Place panel top over channel on header plate, as shown in Fig. 21. Press panel tight against wall, and secure it to

header with screw provided in final assembly package.

Open control door at bottom of panel and fasten panel at each side through slots in flanges with screws provided.

Attach handle to panel door with screws provided.

Models 5009611, 5009612, 5009621 and 5009622: Install

second face panel in same manner.

B/W ! SCREW EA SIDE

MODELS

5009611 5009612 5009621 5009622

BOTTOM PANEL MENT (2} SCREWS

EACH SIDE

PANEL DOOR

LEGS

FLOOR PLATE

(CONTROL)

NOTICE

DURING THE FIRST FIRING OF THIS UNIT SOME SMOKE AND ODOR MAY OCCUR. WE RECOM- MEND VENTILATING THE AREA DURING THIS "BREAK IN" PERIOD. LET FURNACE REACH FULL OPERATING TEMPERATURE.

Start-Up Procedure

Start the furnace using the procedures in section exceed the input of the rating plate reduced by 4 percent OPERATING YOUR FURNACE. for each 1000 feet that the furnace is above sea level.

WARNING

DANGER OF PROPERTY DAMAGE,

BODILY INJURY OR DEATH. LIQUEFIED PETROLEUM L.P. GAS IS HEAVIER THAN AIR AND IT WILL SETTLE IN ANY LOW AREA, INCLUDING OPEN DEPRESSIONS AND IT WILL REMAIN THERE UNLESS AREA IS

VENTILATED.

NEVER ATTEMPT STARTUP OF UNIT BEFORE

THOROUGHLY VENTILATING AREA.

Check the furnace operation as outlined in the following instructions. If any sparking, odors or unusual noises are

encountered, shut off electric power immediately. Recheck

for wiring errors, or obstructions in or near fan motor (if equipped).

CHECK GAS INPUT AND PRESSURES For furnace located at elevations between sea level and

2000 feet, the measured input must not be greater than the input shown on the rating plate of the furnace. For

elevations above 2000 feet, the measured input must not

Gas supply pressure and manifold pressure with the burners operating must also be as specified onthe rating

plate.

Type of Gas ] Manifold Pressure, In. W.C.

Natural I 4L.R 11

Rated input will be obtained on 2500 Btu propane at 11

inch manifold pressure and factory-sized orifices. If LP gas having a different heating value is supplied, orifices must be changed by a qualified service technician before the

furnace is operated.

CHECK THE MANIFOLD GAS PRESSURE

A tapped opening is provided in the gas valve to facilitate

measuring the manifold gas pressure. A "U Tube"

manometer having a scale range from 0 to 12 inches of water should be used for this measurement. The manifold

pressure must be measured with the burner and pilot operating. Any major changes in the flow must be made

by changing the size of the burner orifice. Check with your WILLIAMS service department for proper orifice sizing.

n17--

Start.Up Procedure (Con't)

CHECK THE GAS INPUT (NATURAL GAS ONLY)

-WARNING

NATURAL GAS HEATING VALUE (BTU PER CUBIC FOOT) CAN VARY SIGNIFICANTLY, THEREFORE,

IT IS THE INSTALLERS' RESPONSIBILITY TO SEE

THAT BTU INPUT TOTHE FURNACE ISADJUSTED

PROPERLY. FAILURE TO DO SO COULD CAUSE HEAT EXCHANGER FAILURE, ASPHYXIATION, FIRE OR EXPLOSION, RESULTING IN DAMAGE,

BODILY INJURY OR DEATH. REFER TO THE NA-

TIONAL FUEL GAS CODE (NFPA-54) TO BE SURE THE FURNACE IS BURNING FUEL AT THE PRO-

PER RATE.

SLOTTING IN EIURNI_

BOOY

TOP

V1EW

Underfiring could cause inadequate heat, excessive con-

densation or ignition problems. Overfiring could cause sooting flame impingement or overheating of heat

exchanger.

Before starting natural gas input check, obtain heating

value of gas (BTU per cubic foot) at standard conditions from your local supplier. This factor isused in "Check the Gas Input" section and procedure.

To measure the input using the gas meter, proceed as

follows:

Step 1: Turnoffgas supply toall other appliances except the furnace.

Step 2: With the furnace operating, time the smallest dial on the meter for one complete revolution.If this is a2 cubic foot dial, divide the seconds by2; if it isa 1 cubic foot dial,

use the time in seconds as is. (3,600 = Sac. Per Hr.) This gives the seconds per cubic foot of gas being delivered

to the furnace. Step 3: Assuming natural gas with a heating value of 1000

Btu per cubic foot and 34 seconds per cubic foot as deter- mined by step (2), then: Input: 1,000 X 3,600 + 34 = 106,000 Btu Per Hour

Operating Your Furnace

MODELS 2509611 ; 3509611 ; 5009611

2509612; 3509612; 5009612

NOTE: SEE PAGE 21 FOR MODEL INFORMATION NOTE. SAFETY, OPERATING AND SHUTDOWN

All models listedabove are equipped with a Williams gas

control valve part number P322051; P322052 (see page

19) or part number P295100A; P295101A (see page 20).

WARNING

DO NOT STORE OR USE GASOLINE OR OTHER | FLAMMABLE LIQUIDS OR VAPORS NEAR THE FURNACE.

WARNING'

DANGER OF PROPERTY DAMAGE,

BODILY INJURY OR DEATH

IF THE FURNACE OVERHEATS OR FAILS TO SHUT OFF, CLOSE MANUAL GAS VALVE FOR THE FURNACE BEFORE TURNING OFF ELEC- TRIC POWER FOR THE FAN.

Your furnace is equipped with a 100% safety pilot which will shut off the gas supply in case the pilot is not burning

or functioning properly. Make sure the pilot is adjusted properly and that the thermocouple connection at the con- trol valve is tight. If furnace will not stay lit, call your local

clas utility or qas sul_plier. --18--

GENERATOR

"IHERMOCOUPLE

FRONT _EW

This measured input must not be greater than the input

indicated on the rating plate of the furnace. Step 4: Relight all other appliances turned off in step 1

above. Be sure all pilot burners are operating. CHECK PILOT BURNER

The pilot flame must envelop 1/2 to 5/8 inch of thermo- couple or generator. See Fig. 22. Pilot flame is preset at the factory, soordinarily does not require field adjustment.

If adjustment is needed, see page 24.

CHECK THERMOSTAT Check thermostat operation. When set above tempera-

ture shown onthe thermostat,the main burner should light.

Make certain the thermostat turns off the furnace when roomtemperature reaches the selected setting and starts

the furnace when room temperature falls a few degrees.

The furnace operates like this:

1. Cool air around built-in sensing bulb automatically

turns on the burner.

2. Heat builds up in the furnace and starts the fan (if equipped). The heated air comes out the front panel

louvers.

3. When the built-in sensing bulb is sufficiently heated

by the warmer room air it automatically turns off the main burner.

4. The fan runs until the heat is removed from furnace, then it will turn off (if equipped).

NOTE: On new installation the gas lines will be filled with air and may take several minutes to establish the pilot

flame.

--MANUAL SPARK IGNITER USAGE:--

If furnace is equipped with a manual spark ignitor, follow these next steps:

1. Review the operating instructions on preceding pages.

2. When instructed to "light the pilot" depress red button located on the burner pan for pilot ignition. If necessary, depress red button several times for pilot ignition.

3. If pilot fails to ignite or a spark is not present while actuating red button, follow steps 5 through 10

listed in operating instructions.

FOR YOUR SAFETY, READ BEFORE LIGHTING

WILLIAMS GAS CONTROL VALVE P322051 & P322052

I WARNING: If you do not follow these Instructions exactly, a firs or explosion I

A. This appliance has a pilot which must be Ilghfed by

hand. When lighting the pilot, follow these instructions

exactly.

B. BEFORE LIGHTING smell around the appliance area

for gas. Be sure to smell next to the floor because some gas is heavier than air and will settle on the floor.

WHAT TO DO IF YOU SMELL GAS

• Do not try to light any appliance.

• Do not touch any electric switch; do not use any

phone in your building.

• Immediately call your gas supplier from a neighbor's

phone. Follow the gas aupplier's instructions.

may result causing property damage, personal injury or loss of life.

OPERATING INSTRUCTIONS

1. STOP! Read the safety information above.

2. Turn off all electric power to the appliance (if applicable). 3, Open control access panel.

4. Turn temperature dial clockwise F'_ to "LO". 5, Push in gas control knob slightly and turn

clockwise f-_ to "OFF."

TEMPERATURE DIAL_ [@ ._ @l @l / GAS CONTROL

"_L_ _, I ._ J/" KNOB SHOWN

t'_J(' _ _.._.J /'_1_'_[ IN "OFF"

NOTE: Knob cannot be turned from "PILOT" to "OFF" unless knob is pushed in slightly. Do not force,

6. Wait five (5) minutes to clear out any gas then smell for

gas, including near the floor. If you then smell gas, stopl Follow "B" in the safety information above. If you don't smell gas, go to next step.

7. Loosen wingnut and open the pilot observation door (if equipped).

8. Find pilot--follow metal tube from gas control. The pilot is mounted on side of burner.

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

Use only your hand to push In or turn the gas control knob. Never use tools. If the knob will not push in or turn by hand, don't try to repair It, call a qualified serv- Ice technician. Force or attempted repair may result In • fire or explosion.

Do not use this appliance if any part has been under water. Immediately call • qualified service technician to inspect the appliance and to replace any pert of the control system and any gas control which has been

under water.

9. Push in gee control

knob slightly and turn counterclockwise _

to "PILOT."

10. Push in control knob all the

way end hold in. Immediately light the pilot.

Continue to hold the control knob in for about one (1)

minute after the pilot is lit. Release knob and it will

pop back up. Pilot should remain lit. If it goes out, repeat steps 5 through 10.

• If knob does not pop up when released, stop and immediately call your service technician or gas

supplier.

• If the pilot will not stay lit after several tries, turn the gas control knob to "OFF" and call your service

11.

12.

13.

14.

technician or gas supplier.

Close pilot observation door, tighten wingnut (if equipped).

Turn gas control knob counterclockwise _'_ to "ON". Sensing bulb is now activated. Set temperature dial to

desired temperature (1 - 5). Close control access panel. Turn on all electric power to the appliance

(if applicable).

THERMO- PILOT COUPLE BURNER

TO TURN OFF GAS TO APPLIANCE

1. Turn off all electric power to the appliance if serv- ice is to be performed (if applicable).

2. Open control access panel.

WARNING: DUE TO HIGH SURFACE TEMPERATURES -- KEEP CHILDREN, CLOTHING,

FURNITURE OR ANY COMBUSTIBLE MATERIAL AWAY FROM FURNACE.

IMPORTANT: KEEP BURNER AND CONTROL COMPARTMENT CLEAN, SEE PAGE 24.

CONNECTION WIRING DIAGRAM FOR BUILT-IN THERMOSTAT MODELS

[ MOOOUP ,

GAS VALVE

BLACK

REMOTE BULB

3. Push in gas control knob slightly and turn

clockwise _ to "OFF." Do not force.

4. Close control access panel.

LEGEND

-- FACTORY WIRED LOW VOLTAGE NOTE:

IF ANY OF THE ORIGINAL WIRE AS SUP- PLIED WITH THE APPLIANCE HAS TO BE

REPLACED, USE ONLY 18 GA. 4/64 IN- SULATION, 105° C. AWM COPPER WIRE OR ITS EQUIVALENT

--19--

FOR YOUR SAFETY, READ BEFORE LIGHTING

WILLIAMS GAS CONTROL VALVE P295100A & P295101A

I WARNING: If you do not follow these instructions exactly, a fire or explosion

A. This appliance has a pilot which must be lighted by

hand. When lighting the pilot, follow these Instructions exactly.

B. BEFORE LIGHTING smell around the appliance area

for gas. Be sure to smell next to the floor because some gas is heavier than air and will settle on the floor.

WHAT TO DO IF YOU SMELL GAS

• Do not try to light any appliance.

• Do not touch any electric 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.

may result causing property damage, personal injury or loss of life.

OPERATING INSTRUCTIONS

1. STOPI Read the safety information above.

2. Turn off all electric power to the appliance (if applicable).

3. Open control access panel.

4. Push in gas control knob slightly and turn

clockwise F'_ to "OFF."

TEMPERATURE DIAL

KNOB SHOWN IN "OFF"

POSITION

NOTE: Knob cannot be turned from "PILOT" to "OFF" lo. unless knob is pushed in slightly. Do not force.

5. Wait five (5) minutes to clear out any gas then smell for 11. gas, including near the floor. If you then smell gas, stopl

Follow "B" in the safety information above. If you don't smell gas, go to next step.

6. Loosen wingnut and open the pilot observation door (if equipped). 12.

7. Find pilot--follow metal tube from gas control. The pilot is 13. mounted on side of burner,

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

department.

Use only your hand to push In or turn the gas control knob. Never use tools. If the knob will not push In or turn by hand, don't try to repair It, call e qua,fled sent- ice technician. Force or attempted repair may result In a fire or explosion.

Do not use this appliance If any part has been under water. Immediately call a qualified service fechnlclan to inspect the appliance and to replace any part of the control system and any gas control which has been

under water.

8. Turn knob on gas control _1_

counterclockwise

to "PILOT."

9. Push in control knob all the

way and hold in. Immediately THERMO- PILOT light the pilot. COUPLE BURNER

Continue to hold the control knob in for about one (I) minute after the pilot is lit. Release knob and It wnl

pop back up. Pilot should remain lit. If it goes out, repeat steps 5 through 10.

• If knob does not pop up when released, stop and

immediately call your service technician or gas supplier.

• If the pilot will not stay lit after several tries, turn

the gas control knob to "OFF" and call your service technician or gas supplier.

Close pilot observation door, tighten wJngnut (if equipped).

Turn gas control know counterclockwise I_ to "ON". Burner is now under control of the thermostatic sens-

ing element. Turn temperature dial (numbered 1 thru 8)

counterclockwtae_toward 8 to obtain desired temperature.

Close control access door Turn on all electric power to the appliance

(if applicable)

TO TURN OFF GAS TO APPLIANCE

1. Turn off all electric power to the appliance if serv- ice is to be performed (if applicable),

2. Open control access panel,

WARNING: DUE TO HIGH SURFACE TEMPERATURES -- KEEP CHILDREN, CLOTHING,

FURNITURE OR ANY COMBUSTIBLE MATERIAL AWAY FROM FURNACE.

IMPORTANT: KEEP BURNER AND CONTROL COMPARTMENT CLEAN, SEE PAGE 24.

VENT SAFETY _ 'I'HERMOCOUPLE

SHUT OFF DE'VICE II I

GAS VALVE

BLACK

3. Push in gas control knob slightly and turn

4. Close control access panel.

FOR BUILT-IN THERMOSTAT MODELSCONNECTION WIRING DIAGRAM

RE),IOTE BULB

--20--

clockwise f_, to "OFF." Do not force.

LEGEND

-- FACTORY WIRED LOW VOLTAGE

NOTE: IF ANY OF THE ORIGINAL WIRE AS SUP-

PLIED WITH THE APPLIANCE HAS TO BE REPLACED, USE ONLY 18 GA., 4/64 IN-

SULATION, 105e C. AWM COPPER WIRE OR ITS EQUIVALENT

Operating Your Furnace (Con't)

MODELS 2509621; 3509621; 5009621

2509622; 3509622; 5009622

SAFETY, OPERATING AND SHUTDOWN

All models listed above are equipped with a Williams

gas control valve part number P172100A; P172200A (see page 22) or part number P295000A; P295001A (see page 23).

WARNING

FLAMMABLE LIQUIDS OR VAPORS NEAR THE

I DO NOT STORE OR USE GASOLINE OR OTHER

FURNACE.

WARNING

DANGER OF PROPERTY DAMAGE,

BODILY INJURY OR DEATH

IF THE FURNACE OVERHEATS OR FAILS TO

SHUT OFF, CLOSE MANUAL GAS VALVEFOR THE

FURNACE BEFORE TURNING OFF ELECTRIC POWER FOR THE FAN.

Your furnace is equipped with a 100% safety pilot which will shut off the gas supply in case the pilot is not burning or functioning properly. Make sure the pilot is adjusted

properly and that the pilot generator connection at the con- trol valve is tight. If furnace will not stay lit, call your local gas utility or gas supplier.

The furnace operates like this:

1. Thermostat turns on the main burner.

2. Heat builds up in the furnace and starts the fan (if equipped). The heated air comes out the front panel

louvers.

3. When the thermostat setting isreached, it shuts offthe main burner.

4. The fan runs until the heat is removed from furnace, then it turns off.

NOTE On new installationthe gas lines will be filled with air and

may take several minutes to establish the pilot flame.

--MANUAL SPARK IGNITER USAGE:-

If furnace is equipped with a manual spark ignitor,

follow these next steps:

1. Review the operating instructions on preceding

pages.

2. When instructed to "light the pilot" depress red button located on the burner pan for pilot ignition. If necessary, depress red button several times for pilot ignition.

3. If pilot fails to ignite or a spark is not present while actuating red button, repeat steps 5 through 10 listed in operating instructions.

--MODEL NUMBER INFORMATION--

NOTE: CANADIAN MODEL NUMBERS THIRD

DIGIT FROM LEFT TO BE:

1 FOR BASIC ALTITUDES

2 FOR HIGH ALTITUDES

EXAMPLE: MODEL: 3509612 BECOMES 3519612

(0-2000 FT. BASIC ALTITUDE) OR BECOMES 3529612

(2000-4000 FT. HIGH ALTITUDE)

D21--

FOR YOUR SAFETY, READ BEFORE LIGHTING

WILLIAMS GAS CONTROL VALVE P172100A & P172200A

WARNING: If you do not follow these instructions exactly, a fire or explosion

may result causing property damage, personal Injury or loss of life.

A. This appliance has a pilot which must be lighted by

hand. When lighting the pilot, follow these Instructions

exactly.

B. BEFORE LIGHTING smell around the appliance area

for gas. Be sure to smell next to the floor because some gas Is heevler than air and will settle on the floor.

WHAT TO DO IF YOU SMELL GAS

• Do not try to light any appliance.

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

• Immediately call your gas supplier from s neighbor's phone. Follow the gas suppller's Instructions.

OPERATING INSTRUCTIONS

1. STOP! Read the safety information above.

2. Turn off all electric power to the appliance (if applicable). 3, Set the thermostat to lowest setting.

4. Open control access panel. 5, Push in gas control knob slightly and turn

clockwise _ to "OFF."

_' @! CONTROL

KNOB SHOWN IN"OFF'POSiTION

NOTE: Knob cannot be turned from "PILOT" to "OFF" unless knob is pushed in slightly. Do not force.

6. Wait five (5) minutes to clear out any gas then smell for

gas, including near the floor. If you then smell gas, stop! Follow "B" in the safety information above. If you don't

smell gas, go to next step.

7. Loosen wingnut and open the pilot observation door (if

equipped).

8. Frnd pilot--follow metal tube from gas control. The pilot is mounted on side of burner.

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

department.

Use only your hand to push In or turn the gas control knob. Never use tools. If the knob will not push In or

turn by hand, don't try to repair it, call a qualified serv-

Ice technician. Force or attempted repair may result In a

fire or explosion.

Do not use this appliance If any part has been under

water. Immediately call a qualified service technician to

inspect the appUance and to replace any part of the

control system and any gas control which has been under water.

GENERATOR n

9. Push in gas control ....._ J__knob slightly and turn

counterclockwise _ to "PILOT." PILOT

10. Push in control knob all the way and BURNER hold in. Immediately light the pilot.

Continue to hold the control knob in for about one (1) minute after the pilot is lit. Release knob and it will

pop back up. Pilot should remain lit. If it goes out, repeat steps 5 through 10.

• If knob does not pop up when released, stop and immediately call your service tachnlclan or gas supplier.

• If the pilot will not stay lit after several tries, turn the gas control knob to "OFF" and call your service

technician or gas supplier.

11. Close pilot observation door, tighten wingnut (it equipped).

12. Turn gas control knob counterclockwise_to "ON".

13. Close control access panel.

14. Turn on all electric power to the appliance (if applicable).

15. Set thermostat to desired setting.

TO TURN OFF GAS TO APPLIANCE

1. Set the thermostat to lowest setting.

2. Turn off all electric power to the appliance if service is to be performed.

3. Open control access panel.

4. From "ON" position, depress and turn gas control knob clockwise _ to "OFF" position. Do not force.

5. Close control access panel.

WARNING: DUE TO HIGH SURFACE TEMPERATURES -- KEEP CHILDREN, CLOTHING,

FURNITURE OR ANY COMBUSTIBLE MATERIAL AWAY FROM FURNACE.

IMPORTANT: KEEP BURNER AND CONTROL COMPARTMENT CLEAN, SEE PAGE 24.

CONNECT;ON WIRING DIAGRAM FOR WALL THERMOSTAT MODELS

LEGEND

-- FACTORY WIRED LOW VOLTAGE NOTE:

IF ANY OF THE ORIGINAL WIRE AS SUP- PLIED WITH THE APPLIANCE HAS TO BE REPLACED, USE ONLY 18 GA., 4/64 IN-

SULATION, 105" C. AWM COPPER WIRE OR ITS EQUIVALENT

T:'_E'=M ©STAT _-_

OEVIC_

BLACK _ 3L_,C:<

/)LACK

GENE,_ATOR

m22--

FOR YOUR SAFETY, READ BEFORE LIGHTING

WILLIAMS GAS CONTROL VALVE P295000A & P295001A

I WARNING: If you do not follow these instructions exactly, a fire or explosion

A. This appliance has a pilot which must be lighted by

hand. When lighting the pilot, follow these Instructions exactly.

BEFORE LIGHTING smell around the appliance area for gas. Be sure to smell next to the floor because some gas is heavier than sir and will settle onthe floor.

WHAT TO DO IF YOU SMELL GAS

• Do not try to light any appliance.

• Do not touch sny electric switch; do not usa any

phone in your building.

• Immediately call your gas supplier from a neighbor's

phone. Follow the gas suppiler's instructions.

may result causing property damage, personal injury or loss of life.

OPERATING INSTRUCTIONS

1. STOPi Read the safety Information above.

2. Set the thermostat to lowest satting.

3. Turn off sU electric power to the appliance (if applicable).

4. Open control access panel.

5. Push in gas control knob slightly and turn clockwise _ to "OFF."

GAS CONTROL KNOB SHOWN IN "OFF" POSITION

NOTE: Knob cannot be turned from "PILOT" to "OFF" unless knob is pushed in slightly, Do not force.

6. Wait five (5) minutes to clear out any gas then smell for gas, including near the floor, if you then smell gas, stop! Follow "B" in the safety information above. If you don't smell gas, go to next step.

7. Loosen wlngnut and open the pilot observation door (if equipped).

8. Fiend pilot--follow metal tube from gas control. The pilot is mounted on side of burner.

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

department.

Use only your hand to push in or turn the gas control knob. Never use tools. If the knob will not push In or turn by hand, don't try to repair it, call a qualified serv-

ice technician. Force or attempted repair may result In s

fire or explosion.

Do not use this appliance if any part has been under

water. Immediately call a qualified service technician to

Inspect the appliance and to replace any part of the

control system and any gas control which has been

under water.

9. Push in gas control GENERATOR _

knob slightly and turn counterclOCkwise

to "PILOT." PILOT

10. Push in control knob all the way and BURNER

hold in. Immediately light the pilot. Continue to hold the control knob in for about one (1)

minute after the pilot is lit. Release knob and it will pop back up. Pilot should remain lit. If it goes out,

repeat steps 5 through 10.

• if knob does not pop up when released, stop and

immediately call your sa_ice technician or gas supplier.

• If the pilot will not stay lit after several tries, turn the gas control knob to "OFF" and call your service

technician or gas supplier.

11. Close pilot observation door, tighten wingnut (if equipped).

12. Turn gas control knob counterclockwise _ to "ON".

13. Close control access panel.

14. Turn on sli electric power to the appliance (if applicable).

15. Set thermostat to desired setting.

TO TURN OFF GAS TO APPLIANCE

1. Set the thermostat to lowest setting.

2. Turn off all electric power to the appliance if service is to be performed.

3. Open control access panel.

4. Push in gas control knob slightly and turn clockwise _ to "OFF". Do not force.

5. Close control access panel.

WARNING: DUE TO HIGH SURFACE TEMPERATURES -- KEEP CHILDREN, CLOTHING,

FURNITURE OR ANY COMBUSTIBLE MATERIAL AWAY FROM FURNACE.

IMPORTANT: KEEP BURNER AND CONTROL COMPARTMENT CLEAN, SEE PAGE 24.

CONNECTION WIRING DIAGRAM FOR WALL THERMOSTAT MODELS

VENT SAFETTHE_._ TAT r-] GENERATOR

SHUT OFF DEVICEI_ -I I I r-----1

GAS VALVE

i BLACK

--23--

LEGEND

-- FACTORY WIRED LOW VOLTAGE NOTE:

IF ANY OF THE ORIGINAL WIRE AS SUP- PLIED WITH THE APPLIANCE HAS TO BE

REPLACED, USE ONLY 18 CA., 4/64 IN-

SULATION, 105° C. AWM COPPER WIRE OR

ITS EQUIVALENT

How To Care For Your Furnace

WARNING

DANGER OF BODILY INJURY OR DEATH

TURN OFF ELECTRIC POWER SUPPLY AT DIS-

CONNECT SWITCH, FUSE BOX OR SERVICE PANEL BEFORE REMOVING ANY DOORS OR AC-

CESS OR SERVICE PANELS FROM UNIT.

CABINET FINISH Clean cabinet with damp rag. Never use abrasive cleaners.

Cabinets are finished in heat resistant baked enamel -- DO NOT refinish with wall paint.

FURNACE AREA Keep the area near the furnace clear and free from com-

bustible materials, gasoline, and other flammable liquids and vapors.

COMBUSTION AND VENTILATION AIR The combustion and ventilation air supply must not be

blocked. Do not put anything in or on the furnace cabinet.

For better circulation and more effective heating, do not place obstructive furniture closer than four feet to the front

of the cabinet or two feet to the side of the cabinet.

BURNER FLAME

Start the furnace and let it operate about 10 minutes then look at the burner flame. Flames should be soft

and blue, see Fig. 23. Ifflames appear abnormal, contact

the gas company or a qualified service technician

immediately.

NOTE No adjustment is provided, or is necessary, for models

equipped with welded formed steel burners.

MAIN BURNER FLAME PATTERN

Jl II It li llBII

CORRECT

ANNUAL UPKEEP NEEDED It is recommended that a qualified service technician

perform these checks at the beginning of each heating season.

CLEANING OPTIONAL FAN (If Equipped) Shut off electricity, then remove screws and face panel.

Clean any lint or dirt from fan blades, fan motor, and ex- posed air passages. Use a brush. See page 33.

PILOT BURNER Light pilot using instructions in OPERATING YOUR FUR-

NACE on pages 18through 23. Leave thermostat at lowest

setting.

Pilot flame should surround 1/2to 5/8 inch of the generator

or thermocouple tip. Refer to Fig. 22, page 18. If flame needs adjusting, do so as follows:

ADJUST PILOT BURNER See Fig. 22, page 18 and Fig. 23.

1. Remove screw cover over pilot adjusting screw.

2. Insert small screwdriver. Adjust flame as needed. Turn screw counterclockwise (=-'--,)to increase flame, clock-

wise (,--_) to decrease.

3. Turn thermostat to highest setting. Main burners should light quickly and smoothly. Turn thermostat to lowest

setting. Main burners should go out. Pilot should remain lit.

4. Replace screw cover with gasket over pilot adjusting screw.

INSUFFICIENT AIR • LONG OPEN END CONES¸ YELLOW IN COLOR OUTER MANTLE LIGHT BLUE

INNER CONES lIGHT BLUE POINTED TOI

PROPER FLAME I/2 'r Io 3/4 ¸. H_GH

ADJUST MAIN BURNER FLAME PATTERN Topvented wall furnaces equipped with cast iron burners

have an interrupter screw located under the burner body

and extends intothe burner neck (venturi). This screw is

used to adjust the primary air to fuel mixture for proper

burner flame. Allow furnace to operate about 10 minutes before making adjustments.

Burner flames should be a series of blue cones slightly

orange at the tips. When flames are sharp and blue with

no orange visible, turn air adjusting screw in burner ven- turi clockwise until very short orange tips are visible. If flames are lazy and yellow, turn air screw counterclockwise to eliminate yellow. See Fig. 23.

VENT SYSTEM

Make sure that no parts of the venting system are blocked or rusted. Clean or replace before using furnace.

--24--

How To Care For Your Furnace (ton't)

WARNING

MAKE SURE GAS SUPPLY IS OFF BEFORE

I DANGER OF BODILY INJURY OR DEATH

REMOVING PANELS OR DOORS, ETC.

FURNACE CONTROLS

INN_

ELEMENT

THERMO- COUpIF

RATING PI..AT_

I_MP.

GAS INPUT

FURNACE: CAL'_ KNOB SHUT-O_" _OUN11NG VALVE

LEG _ _'-DRIP LEG

REMOTE "_IERMO BULB GROUND

(ATTACHED UNDERSIDE OF VALVE) JOINT UNION

RTIING

CLEANING BURNER COMPARTMENT

Because cold air is attracted to the flame during furnace

operation, a build up of lint from bedding and dust (etc.)

BOOY

GAS

MANUAL

in the burRer area will occur each heating season. It is necessary to clean this area regularly. Use a vacuum cleaner with a narrow attachment to reach small areas.

Be careful in and around the pilot. A change in its adjust- ment could be made if struck during cleaning.

BURNER CLEANING Check burner. If cleaning is required, contact a qualified

service technician to clean and service burner.

TO REMOVE BURNER(S) Clean all foreign materials from top of burner.For access

to burner of all models:

1. Open burner compartment door.

2. Shut offgas supply to furnace (Manual Shut-Off Valve).

3. Disconnect gas line inside cabinet at groundjointunion fitting. See Fig. 24.

4. Remove (2) screws securing burner pan assembly to inner liner.

NOTE

If furnace is equipped with a welded formed steel

burner, remove additional (2) screws securing burner to heating element.

5. Pull burner pan assembly forward approximately

1/2inch and drop down to expose top of burner.

6. After cleaning, replace burner pan assembly by re- versing above procedure.

Furnace Technical Information

INPUT

MODEL

NUMBER

2509612 2509622

2509611 2509621

3509612 3509622

3509611 3509621

5009612 5009622

5009611 5009621

TYPE

GAS

NAT.

L.P.

NAT.

L.P.

NAT.

L.R

RATING

BTU/HR**

25,000

35,000

50,000

**For elevations above 2000 feet reduce ratings 4% for each 1000 feet above sea level.

***Btuh = British Thermal Units per hour. The efficiency rating of these appliances is a product thermal efficiency rating determined under continuous operating conditions and was determined independently of any installed system.

HTG. CAPAC.

RATING

BTU/HR**

19,350

25,930

38,000

MAIN BURNER ORIFICE

DRILL DEC. QTY.

#43 .089 1

#54 .055 1

#38 .101 1

#52 .063 1

#43 .089 2

#54 .055 2

--25--

WILLIAMS GAS-FIRED TOP VENT GRAVITY WALL FURNACE

SYMPTOM POSSIBLE CAUSES CORRECTIVE ACTION

1. Pilot will not stay lit after carefully following lighting instructions.

TROUBLE SHOOTING

A. Thermocouple or

generator producing in- sufficient millivoltage.

B. Loose or dirty thermo- Clean and/or tightenthermocouple orgenerator con-

couple or generator con- nections at valve. nections at gas valve.

Check pilotflame - must impinge on thermocouple or generator. Be sure thermocouple or generator is

fully inserted in bracket.

2. Pilot burning - no gas to main burner.

C. Thermocouple or

generator defective.

D. Grounded thermostat Remove thermostat lead wires from valve terminals.

lead wire. (Wall thermo* If pilot now stays lit, trace thermostat wiring circuit stat model.) for a ground. May be grounded to furnace or gas

E. Thermomagnetic pilot Replace gas valve after above is checked out.

safety defective.

F. Vent Safety Shutoff

System.

A. Manual valve notturned

to "On" position after

lighting pilot.

B. Temperature dial or Set temperature dial or thermostat to a position call-

thermostat not turned to ing for heat.

a position calling for heat.

Check thermocouple with millivolt meter. Should generate approximately 30 millivolts when not con-

nected to load. When connected to load, should generate approximately 14 millivolts; if below 7 millivolts, replace.

Check generator with millivolt meter. Take reading at generator terminalsofvalve with pilot burning and thermostat contactsclosed.Should be 140 millivolts

or more.

supply.

Check wiring connections from valve to vent safety shutoff device. Be sure all connections are tight.

Check for blocked vent or disconnected vent.

Turn gas valve knob to "On" position.

3. Furnace operates but turns "Off" before room

temperature is attained.

C. Plugged burner orifice. Check - clean or replace.

D. Temperature dial out of See valve instruction sheet.

calibration. (Bulb control model.)

E. Mis-wired or broken ther- Check connections at valve terminals. If valve

mostat wires. Defective operates check thermostat wires.

thermostat. (Wall ther-

mostat model.)

F. Pilot generator may not Sea 1A above.

be generating sufficient millivoltage to open valve.

G. Defective valve.

A. Sensing bulb not located

properly. (Bulb control model.)

B. Temperature dial out of

calibration. (Bulb control

model.)

--26--

Replace. Check location of sensing bulb - see Fig. 24, page

25.

See valve instruction sheet.

(Continued next page

TROUBLE SHOOTING

WILLIAMS GAS-FIRED TOP VENT GRAVITY WALL FURNACE

SYMPTOM

3. Furnace operates but

turns "Off" before room temperature is attained.

(continued)

4. Furnace not producing

sufficient heat.

5. Furnace operates but will

not shut "Off" when room temperature is

attained.

POSSIBLE CAUSES

C. Thermostat location.

(Wall thermostat model.)

D. Defective thermostat.

(Wall thermostat model.)

A. Furnace may be too

small for space being

heated.

B. Furnace not burning at

full rate.

A. Sensing bulb not located

properly. (Bulb control model.)

B. Temperature dial out of See valve instruction sheet.

calibration. (Bulb control model.)

C. Bulb or capillary broken. Replace valve.

(Bulb control model.)

D. Thermostat wiring defec- Thermostat lead wires may be shorted together

tive. (Wall thermostat caused by a nail orstaple - check by removing ther-

model.) mostat leads from valve terminals.

E. Thermostat location. Check thermostat location - ifon an outside wall or

(Wall thermostat model.) a hole in wall behind thermostat causing cold air to

Check thermostat location - should not be in the path of warm air discharge from furnace, near a

lamp, or above a TM. or stereo set. Check thermostat calibration or replace.

Check heat loss calculations.

Check for low gas pressure at gas valve - should

be 4" W.C. for naturalgas; 11" W.C. for L.RG. Check burner orifice.

Check location of sensing bulb - see Fig. 24, page

25.

contact thermostat - relocate.

CORRECTIVE ACTION

F. Defective thermostat. Check thermostat calibration or replace.

(Wall thermostat model.)

G. Dirt under valve seat or

valve stuck open.

6. Pilot outage problem. A. Pilot flame may be low or Adjust pilot flame. Pilot orifice or aerating hole may

blowing (high) causing be plugged (check for spider webs or other organic safety to drop out. material).

7. Abnormal operation. A. Delayed ignition - pilot Adjust pilot flame. flame may be too low.

B. Expansion noise ticking. Check installation - casing may be distorted by

C. Spillage Check vent system - may be blocked flue, excessive

D. Excessive flame roll-out. Furnace possibly over rate - check for high gas

Replace valve.

being fastened to an uneven opening or jammed under header.

down draft (wind) or negative pressure in room caus- ed by ventilating fan or a fire in a fireplace, Correct as necessary.

pressure at gas valve (see 4B above).

m27m

WILLIAMS GAS-FIRED TOP VENT GRAVITY WALL FURNACE

REPLACEMENT PARTS LIST FOR MODELS -

2509611; 2509612; 2509621; 2509622 3509611; 3509612; 3509621; 3509622

REF.

NO.

1 2 3 3

4 5

6 6 7

7 8 9

10 11

"A- 'A-

PART DESCRIPTION

NO.

4915

9C155 9D52

9D54 9B199

9C153

9C166

9C165

P321826 P322055

9C172-1 5902

6901

9901 OVAL B//W VENT KIT P320994 DOOR HANDLE

P322085 OWNERS MANUAL

,A-

NOT SHOWN "_ NOT AVAILABLE SEPARATELY (KIT FORM ONLY) NOTE: SCREWS AND BOLTS ARE STANDARD HARDWARE ITEMS, AVAILABLE LOCALLY. FOR PARTS ILLUSTRA]3ONS, SEE BELOW AND PAGE 29

FACE PANEL FRONT HEAT SHIELD

COMBUSTION CHAMBER ASSY.- 2509611; 2509612; 2509621; 2509622 COMBUSTION CHAMBER ASSY. - 3509611; 3509612; 3509621; .3509622

DEFLECTOR

INNER SHIELD TOP

DRAFTHOOD ASSEMBLY- 2509611; 2509612; 2509621; 2509622 DRAFTHOOD ASSEMBLY- 3509611; 3509612; 3509621; .:3509622 LIMIT SWITCH- 2509611; 2509612; 2509621; 2509622 LIMIT SWITCH - ,3509611; 3509612; 3509621; .3509622

SHIELD ASSEMBLY HEADER ASSEMBLY (REF. 9B56-1)

"_ REAR OUTLET

REAR PLASTERGROUND _--'---REAR

OUTLET

m28--

REAR OUTLET REGISTER 6901

WILLIAMS GAS-FIRED TOP VENT GRAVITY WALL FURNACE

REPLACEMENT PARTS FOR MODELS

2509611; 2509612; 3509611; 3509612;

2509621; 2509622

3509621; 3509622

--29--

USE ONLY MANUFACTURER'S AUTHORIZED PARTS =,,_

ip,lo.,,e3

WILLIAMS GAS-FIRED TOP VENT GRAVITY WALL FURNACE

CONTROL ASSEMBLY

REPLACEMENT PARTS LIST FOR MODELS -

2509611; 2509612; 2509621; 2509622 3509611; 3509612; 3509621; 3509622

_;_

REF. PART

NO. NO.

1 9Ct05 1 P025600

2 P043800 3 P321837

3 P179800 3 P322274 3 P322275

4 9C104 4 9B59 5 P321828 6 P322051 6 P522052 6 P172100A 6 P172200A 7 P328500 8 P090500 9 P026200 10 9A106

11 12A01 12 P321856 13 P522016

DESCRIPTION

T-BURNER (FORMED STEEL, NAT. GAS ONLY) X X X X BURNER (CAST IRON) X X X X

GENERATOR : X X X X PILOT BURNER X X PILOT BURNER X X

PILOT BURNER X X PILOT BURNER X X BURNER PAN ASSEMBLY (T-BURNER) X X X X

BURNER PAN ASSEMBLY (CAST IRON) X X X X

TERMINAL BLOCK THERMOCOUPLE X X X X CONTROL GAS VALVE X X CONTROL GAS VALVE X X

CONTROL GAS VALVE X X CONTROL GAS VALVE X X ORIFICE ADAPTER X X X X ORIFICE (SPECIFY GAS TYPE & INPUT) X X X X ' X X X X LOCKNUT X × X X X X X X

MANIFOLD RETAINER (CAST IRON BURNER) X X X X MANIFOLD ASSEMBLY (CAST IRON BURNER) X X X X

WIRE ASSEMBLY (2 REQUIRED) X X X X X X X X

THERMOSTAT ; X X X X

00000000

_LO u3 LO

Cxl r,o OJ

FOR PARTS ILLUSTRATIONS, SEE PAGE 31 "X" DENOTES USAGE

NOTE: SCREWS AND BOLTS ARE STANDARD HARDWARE ITEMS, AVAILABLE LOCALLY.

m30--

WILLIAMS GAS-FIRED TOP VENT GRAVITY WALL FURNACE

REPLACEMENT PARTS FOR MODELS --

2509611; 2509612: 2509621; 2509822; 3509811; 3509612; 3509621; 3509622

FOR REPLACEMENT PARTS LISTING SEE PAGE 50

NAT. GAS

CONTROL ASSEMBLY

L.P. GAS

CONTROL ASSEMBLY

I I

WILLIAMS GAS - FIRED TOP VENT GRAVITY WALL FURNACE

REPLACEMENT PARTS LIST FOR MODELS -

5009611; 5009612; 5009621 ; 5009622

REF.

NO.

2 3

6 7

I0 11

PART

DESCRIPTION

NO.

4.915

9C155 9A277

9D65 9073 9C171 95199 5901

P321826 9C'170 9C157

9C158

9901 P320994 P322085

NOT SHOWN _" NOT AVAILABLE SEPARAltl.Y (KIT FORM ONLY) NOTE: SORES',/SAND BOLTS ARE STANDARD HARDWARE I'[_MS, AVAILABLE LOCALLY.

FOR PARTS ILLUS'i'RATIONS SEE PAGE 33

FACE PANEL(2 REQUIRED)

FRONT HEAT SHIELD (2 REQUIRED)

CARRYOVER SHELL COMBUSTION CHAMBER ASSE]_BLY (FRONT)

COMBUSTION CHAMBER ASSEMBLY (REAR) OUTER CASING ASSEMBLY

DEFLECTOR

HEADER (REF. - 9C30)

UMIT SWITCH

DRAF-IHOOD ASSEMBLY (2 REQUIRED)

NON - VISION SHIELD INNER SHIELD TOP (2 REQUIRED)

OVAL B/W VENT KIT DOOR HANDLE

OWNERS MANUAL (REV. 11/95)

--32--

WILLIAMSGAS- FIRED TOP VENT GRAVITY WALL FURNACE

REPLACEMENT PARTS FOR MODELS

5009611; 5009612; 5009621; 500962?

USE ONLY MANUFACTURER'S

AUTHORIZED PARTS ,_,_._

--33--

IF.t{w-€}

WILLIAMS GAS-FIRED TOP VENT GRAVITY WALL FURNACE

CONTROL ASSEMBLY

REPLACEMENT PARTS LIST FOR MODELS -

5009611; 5009612; 5009621; 5009622

LO _O!LO tO

REF.

NO.

10 11

1,3

14 15

PART

NO.

9C105

P025600

P043800

P320758

P320778

P322396

P322397

9C95

9C34

P321828

P322052

P322051

P1722OOA

P17210OA

9A174

P090500

P026200 9A298 9A108 9A200

7A189

9B124 9C96

P322016 P321836

FOR PARTS ILLUSTRATIONS, SEE PAGE 35 "X" DENOTES USAGE

T-BURNER (FORMED STEEL.NAT. GAS ONLY),2 REQUIRED. x X

BURNER (CAST IRON), 2 REQUIRED. x X GENERATOR X X

CARRYOVER PILOT - NAT. x

CARRYOVER PILOT - L.P.G. X

CARRYOVER PILOT - NAT. X

CARRYOVER PILOT - L.P.G. X BURNER PAN ASSEMBLY (T-BURNER) X X

BURNER PAN ASSEMBLY (CAST IRON) X X TERMINAL BLOCK ll4ERMOCOUPLE X X

CONTROL GAS VALVE X CONTROL GAS VALVE X

SHIELD-BRNR. PAN (FORMED STL. BRNR., NAT. GAS ONLY). X X ORIFICE (2 REQ. SPECIFY GAS TYPE & INPUT) X X X X

LOCKNUT, 2 REQUIRED. X X X X MANUAL SPARK IGNITOR (PIEZO) X X X X

MANIFOLD ASSEMBLY (CAST IRON BURNER) X X MANIFOLD ASSEMBLY (FORMED STEEL BURNER) X X PIEZO BRACKET (SPARK IGNITOR) X X X X CARRYOVER BRACKET (CAST IRON BURNER) X X CARRYOVER BRACKET (FORMED STL. BRNR. NAT GAS ONLY) X X

THERMOSTAT X X WIRE ASSEMBLY (2 REQUIRED) X × X X

DESCRIPTION

ooo o

O O

u-)u-)u3 u-)

NOTE: SCREWS AND BOLTS ARE STANDARD HARDWARE ITEMS, AVAILABLE LOCALLY

m34--

WILLIAMS GAS-FIRED TOP VENT GRAVITY WALL FURNACE

REPLACEMENT PARTS FOR MODELS -

5009611; 5009612: 5009621; 5009622

FOR PARTS LISTING, SEE PAGE 54

NAT. GAS CONTROL ASSEMBLY

L.P. GAS CONTROL ASSEMBLY

135--

USE ONLY MANUI:'ACTURER*S AUTHORIZED PART5

LIr/oo-ol

INSTALLATION INSTRUCTIONS

2901 BLOWER ACCESSORY KIT

NOTE: All electrical work must conform to your local STEP 8. codes and ordinances or in their absence, with cur-

rant National Electrical Code, ANSI/NFPA 70. If you are not familiar with wiring codes in general, have

a competent electrician do this job.

WARNING.

DANGER OF PROPERTY DAMAGE,

BODILY INJURY OR DEATH

TURN OFF ELECTRIC POWER SUPPLY AT DIS- CONNECT SWITCH, FUSE BOX OR SERVICE

PANEL BEFORE REMOVING OR WORKING ON

FAN CABINET.

BLOWER ACCESSORY KIT

This accessory is installed on furnace top and in- creases circulation of warm air through heated space.

A 115V outlet adjacent to the furnace is required. For Automatic Setting-

You must select "HI" or "LOW" position. When furnace heats up the temperature sensing device will be activated and the fan will operate.

STEP 9.

STEP 10.

STEP 11.

Drill 1/8 inch diameter hole in each side of

the furnace face panel through the holes on the sides of the fan cabinet, and secure the

cabinet to the furnace with the two sheet

metal screws provided. NOTE: Set blower cabinet against_all sur-

face (required on deeper face

panels).

Replace junction box cover, securing with

screws previously removed.

Replace blower grille, securing with screws previously removed.

Set switch to desired position. If left in "HI" or "LOW" position during summer months

blower accessory could be activated by

sunlight striking furnace face panel through

unshaded windows. If this is undesirable

set switch to "OFF" position.

FIG. A

Blower accessory will not operate if toggle switch is

set in off (center) position. Install as follows:

STEP 1. Install 115V electrical outlet where shown

in your owners manual; see rough-in illustration

STEP 2.

STEP 3.

STEP 4.

STEP 5.

STEP 6.

STEP

Remove (2) screws securing blower grille assembly, and remove blower grille (See Fig. A.)

Remove (2) screws securing junction box

cover (See Fig. C). Then remove cover to gain access to knockout hole located in junction box (See Fig. C)

Locate knockout hole and remove knockout

using a hammer and screwdriver.

Place blower cabinet on furnace top (See Fig. A).

Route 115V field wiring into junction box through knockout hole.

Make field wiring connection inside junction box (See Fig. B). Follow applicable local

and national electrical codes.

OP_ONAL FAN ACCESSORY

SEE PAGE 37 FOR ADDITIONAL ILLUSTRATIONS

--36--

INSTALLATION INSTRUCTIONS

REF.

;'ARTNO. DESCRIPTION FIG. B.

NO.

2 3 4

5 6

7 8

10 11

12 13

14 15 16

P013200

P093200

P1410C0

P320911A

P3,?.G912

P127300

P04110

9C102

P321078

P012900

P322395 P029200 P320905

P320907

9D12-1

68161

Screw-#8x3/8SheetMetal(8)Required BlowerGrille

Screw-#Bx3/8SheetMetal(2)Required Screw-#10xl/2SheetMetal(1)Required

FanSwitch-2Speed WireBridle

Washer-flat-#10-32(2) Required NutMach.-#8-32WlStarWasher(2)Required

BlowerBody Grommet-motormount(2)Required

Bushing-StrainRelief AutomaticFanSwitch

Borew-Machine- #6-32x15/16(2)Required Motor-2 Speed

FanBiede OrificePlate

JunctionBoxPlate

BLOWER ACCESSORY KIT NO. 2901

NOT BK 51. W

I " 1r5v 6_,4z "q" t I HOT I NEUT I

I I GNO I

F_I TCGG-E _- _TCH S_T_:H eL

---- -- HI_ vo_toge _d, LEGEND

O w_ connector for" ltho _to_ - factory _g

[_1/4 _k_< co_ect t,=,-mln_=for

focto,"y wk-th<j con_ect_nL

NOTES: R - R_ G -

1 Motor is therr_ly prolected 2 If any o_ the origiP_dwire as supple3 with the ap_iarme has

to be replaced, u,_ c_ty 18 Ga, 4/64 ir_Jiabon, 105o C. AWM cop -

>er wire or dsequivalent HSV 6OHz. - less than 3 _ps.

FROt*4 SUPPLY C_RC_IT, BE;"OR£S_VtC_

WA.R.NING: OlS_C_NNECT APPLIANC_ ]

[OR CLEANING,

Tot_ _ load I_ than 3 AMPS* | P320904

FAN I_ FAN

5"t_TCH },ITR

Hl<jt_ "*_dto_e roctoPf.

ELK- BLACX BL " BLUE W = Y_'_ITE

6 _

JUNC_ON

FIG. C

--37--

Service Record

DATE MAINTENANCE PERFORMED COMPONENTS REQUIRED

--38 D

-- Notes --

--39--

.0TE

:" DIAN_ MODEL NUMBERS THIRD

DIGIT FROM LEFT ,T_ BE:

1_FOR8ASIC_LTRUDES

2_EORHIGH,ALTITUDES . EXAMPLE_' ._."

MODEL; 350961_BECOMES 3519612

_- (0-2000FT.BASICAL1TrUOE)

OR BECOMES 3529612

: (2000-4000FT.HIGHALTITUDE)

Service Hints

If your furnace fails to work right, you may avoid inconvenience and the cost

of a service call by checking the following points before you call for service.

FOR YOUR SAFETY FOR YOUR SAFETY

If you smell gas:

Do not store or use gasoline 1. Open windows. or other flammable vapors and 2. Don't touch electrical. liquids in the vicinity of this or any 3. Extinguish any open flame. other appliance. 4. Immediately call your gas

POSSIBLE CAUSE WHAT TO DO If your furnace Is not heating or not giving enough heat --

Thermostat is not set correctly.

Pilot is out.

Pilot is on but burner won't come on,

Burneris not operating properly.

Air flow restricted.

Pilot goes out time after time -- Furnace flue blocked.

Pilot and burner access door not closed properly.

If burner is noisy -- Gas input amount is incorrect.

Too much primary air. If blower does not run --

Fan switch not set. Blower not connected to

electric power. if blower motor is noisy --

Housing rattling. Blower dirty.

Blower wheel bent.

See troubleshooting section for more detailed information.

supplier.

Reset thermostat to desired setting. Check pilot. Relight if necessary following instructions for "Operating

Your Furnace:' If gas valve is set at other than "On"

furnace will not operate. Shut furnace down and follow instructions for

relighting in "Operating Your Fur- nace" section.

Check flame, If it is yellow the burner is not getting enough air. Or if flame is blue and noisy and seems to lift off the burner, the burner is getting too much air. See "Checks and Adjust- ments:' page 24, Check that doors, drapes or furniture are not blocking furnace louvers.

Locate vent outlet blockage and clean.

Check the door. See section on "Operating Your Furnace" beginning

on page 18.

Contact Williams Service Department. Contact Williams Service Department.

Select fan speed. Connect to electric power.

Tighten screws. Clean blower wheel.

Straighten or replace.

How to Order Repair Parts

When ordering repair parts, always give the following information:

1. MODEL NUMBER

2. MFG. DATE CODE

3. PART NUMBER

4. PART DESCRIPTION

WILLIAMS FURNACE COMPANY

Colton, CA 92324 USA

All parts listed herein may be ordered from your equip- ment supplier.

The Model Number of your Williams wall furnace will be found on the rating plate near gaB valve, inside control compartment.

MANUFACTURED

225 Acacia Street

IN THE U.S.A.

Established 1916

(909) 825-0993

FAX: (909) 824-8009

Williams 3509612, 2509612, 2509622 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual