Williams 6508732, 6508731, 5508332, 5008732, 5008731 User Manual

...

INSTALLATION & OPERATING

INSTRUCTION MANUAL

owners manual

MODEL NOS.

3508332

3508732 5008732 5508332

6508732

FOR USE WITH

NATURAL GAS ONLY

MODEL NOS.

3508331 3508731

5008731 5508331

6508731

FOR USE WITH

LIQUEFIED

PETROLEUM (L.P.)

GAS ONLY

Save This Manual For

Future Reference.

COUNTERFLOW TOP VENT

GAS WALL FURNACES

READ THIS OWNERS MANUAL

CAREFULLY BEFORE YOU INSTALL

YOUR NEW 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 instructions.

• 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- I naces (Natural or L.R Gas) in mobile

Ihomes, trailers, or recreational vehicles.

ALL MODELS ARE CERTIFIED FOR USE IN CANADA EXCEPT 6508731 AND 6508732.

Williams Furnace Co., 225 Acacia St., Colton, CA 92324, USA

PRINTED IN U.S.A 6/98 P321005

Contents

Your Williams Warranty ......................... 2

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

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

Optional Accessories ........................... 3

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

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

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

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

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

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

Locating Wall Furnace and Thermostat .......... 6-7

Combustion and Ventilation Air ................ 7-10

Installation

Recessed Mount Installation ............. 10-12

Surface Mount Installation ................ 12-13

Vent Installation ........................ 13-15

Mounting Your Furnace ..................... 15-17

Gas Supply and Piping ...................... 17-18

Electrical Wiring ........................... 18-19

Thermostat Installation ...................... 20-21

Optional Accessory Installation ............... 21-23

Start Up Procedure ........................... 24

Operating Your Furnace ..................... 25-30

How To Care For Your Furnace ............... 31-32

Furnace Technical Information .................. 32

TROUBLESHOOTING CHART ............... 33-36

Wiring Diagrams ........................... 37-38

Repair Parts .............................. 39-46

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 al 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 or functionally similar part.

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 INCIOENTAL, 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 appty 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, alleration, 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 owne_ 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 installer 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 deale_ 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.)

introduction

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

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

manual.

Basic Description

Your Counterflow Top Vented Wall Furnace is shipped

ready to install on the surface of a wall or recessed up to 9-1/4 inches in a wall, with wall studs spaced 16 inches

center to center. Vent piping and exhaust are not part of the Williams fur-

nace package and must be purchased separately. Always consult your local heating or plumbing inspector,

building department or gas utility company regarding regulations, codes or ordinances which apply to the in- stallation of a counterflow top vented wall furnace.

Air is drawn in at the top by the fan and discharges through a grille near the floor. A two-speed fan is used with Model 50087;55083 and 65087 series. A single speed fan is us-

ed on all other models. The furnace contains a multi-slot burner (two on Model 50087; 55083 and 65087 series) and

burns either Natural or L.P (Liquefied Petroleum) Gas, depending on the model you have purchased.

The furnace controls are located behind an access door

on the lower front of the furnace. All models are equipped

with American Gas Association listed gas valves and pilots.

Optional Accessories

OUTLET GRILLE REGISTER 6701 pg. 21 & 22

Lets you route some heated air to a second room. Mounts

on side wall of second room and must be within 10 inches of wall furnace.

DIFFUSER GRILLE KIT 6703 Fig. 3, pg. 7

Lets you route some heated air in a two-way direction. Kit 6704 for one-way direction.

REAR OUTLET KIT 6801 Lets you route some heated air to a second room behind

the furnace. Finished wall of second room must be within

10 inches of furnace. Ref. Fig. D, pg. 7. Built-in damper lets you shut off air flow to second room if desired.

SHORT REAR OUTLET KIT 6802

Letsyou route some heated air to a second room behind

the furnace when furnace is recessed mounted. Finished wall cannot be more than 3/4 inches from rear offurnace.

Built-in damper lets you control the air flow to the second room.

The combustion system draws combustion air directly from the room in which the furnace is installed, and through ven- tilation grills or ducts connected to the outdoors, such as an

attic or crawl space. The combustion gases are discharged through the roof within a listed vent pipe

The furnace heat exchanger is built of heavy gauge steel treated for corrosion resistance. The fan at the top forces

air down along the front, back and sides of the heat exchanger where it is discharged into the room. The fur-

nace cabinet is also constructed of heavy gauge steel and has an enamel paint finish.

Models 3508331; 3508332; 5508331 and 5508332 are

equipped with an electronic ignitionautomatic pilot relight system.

This appliance is equipped with a vent safety shutoff sys- tem designed to protect against improper venting of com-

bustion products. Operation of this wall furnace when not connected to a properly installed and maintained ventil-

lating system or tampering with the vent safety shutoff sys- tem can result in carbon monoxide (CO) poisioning and

possible death.

TRIM STRIP KIT 4701 Provides finished edge at sides of wall furnace. Neutral

beige enamel painted steel. OVAL VENT KIT 9901

This U.L. listed B/W vent kit contains 4 feet of oval double- walled vent pipe, plate spacers and starter or hold-down

plate that starts the venting from the top of furnace. See page 13 for additional items you will need.

VENT ENCLOSURE KITS 9812 or 9824 These kits are used only when the furnace is surface

mounted. They enclose the vent pipe from the top ofthe

surface to the ceiling.

SIDE GRILLE KIT 6702 Allows you to direct heated air from the side of furnace

into the same room. NOTE

All kits are identified on the carton by their Manufacturing

Number respectively, 6701, 6703, 6704, 6801, 6802, 4701, 9901, 9812, 9824 and 6702. These numbers are also listed on the furnace rating plate.

Helpful Installation Information

The following booklets will help you in making the installation:

ANSI/NFPA 70-1990 or current edition "National Electrical Code." In Canada: CSA C22.1 Canadian Electrical Code. American National Standard NFPA54/ANSI Z223.1 1988 or current edition "National Fuel Gas Code."

Obtain from -- American National Standards Institute, Inc., 1430 Broadway, New York, N.Y. 10018. In Canada: CAN/CGA B149 Installation Code.

m:_m

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, INSTALLATION MUST 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. REFERENCE IS MADE IN THIS MANUAL

REGARDING GAS TYPE AS L.P.G. BE ADVISED THAT L.RG. IS NOT AVAILABLE IN CANADA,

REFER TO PROPANE/L.P. GAS.

1. USE ONLY MANUFACTURER'S REPLACEMENT PARTS. USE OF ANY OTHER PARTS COULD 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 Wall 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 input adjustment is 5" col-

umn. The maximum inlet gas supply pressure is T'

water column.

For L.IR gas, the minimum inlet gas supply pressure for the purpose of input adjustment is 11" water col- umn. The maximum inlet gas supply pressure is 13"

water column.

ANY SAFETY SCREEN, GUARD OR PARTS RE-

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

PLIANCE TO AVOID PROPERTY DAMAGE, BODILY INJURY OR DEATH.

INSTALL the furnace vent directly to the outdoors, so that harmful gasses will not collect inside the building. Follow the venting instructions for your type installa-

tion exactly. Use only the type and size of vent pipe

and fittings specified.

BE SURE to provide for adequate combustion and ventilation air. See page 6. The flow of this air to the

furnace must not be blocked.

10.

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.

11.

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.

12.

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

13.

ALERT children and adults to the hazards of high sur-

face temperature and to keep away to avoid burns or clothing ignition.

14.

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

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

16.

INSTALLATION and REPAIR must be done by a qualified service person. The appliance should be in- spected before use and at least annually by a profes-

sional service person. More frequent cleaning may be

required due to excessive lint from carpeting, bedding material, etc. It is imperative that control compart- ments, burners and circulating air passages be kept

clean.

17.

BEFORE INSTALLING: Toavoid electrical shock, turn

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

18.

CAUTION: Label all wires prior to disconnection when servicing controls. Wiring errors can cause im- proper and dangerous operation. Verify proper oper- ation after servicing

WARNING

DO NOT USE THJS 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.

--4--

Unpack Your Furnace

The furnace is shipped in one carton containing the fur-

nace, installation instruction booklet and hardware bag.

1. Lay carton horizontally. Remove top trim cover from its packing. Remove thumb screw at top of furnace, raise top front panel 1/2 inch and remove panel from cabinet. This is so you can get to the electrical con-

nections later.

2. Place these and other parts, as they are removed from furnace, where they cannot be lost or damaged before you need them.

3. Bottom front panel can be removed by grasping just below handle and pulling it outward and then upward. See Fig. 1.

NOTE

Check the burner rating plate, located in burner com- partment, to make sure your furnace is equipped to operate on the type of gas available (either Natural or

L.IRGas). Do NOT convert unit from Natural Gas to L.IR

Gas or from L.F_ Gas to Natural.

4. Remove all literature and package containing ther-

mostat, wire and metal anchors used for free standing installation.

5. Check the fan blade to be sure it spins freely.

Basic Tools Needed

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

1/8" and 3/16" drill bit (metal) 6 ft. folding rule or tape measure Screwdriver (med. blade) Screwdriver (Phillips head)

Pliers (wire cutting)

Hammer

Hole Saw - 2"

Basic Materials

Pipe and fittings tomake connections to furnace (see page

17).

Caulking compound - silicone rubber with a temperature rating of 500°tE

DO NOT USE types advertised as paintable or for bath tub use as most contain fillers and will not withstand high

temperatures. Pipe Joint Compound resistant to L.P. Gases.

Electrical wiring supplies as needed (see page 18). Minimum wire size is #14 gauge copper.

1/8" Allen wrench Stud Locator or small finish nails

Tin Snips 8" adjustable wrench 12" adjustable wrench

Key hole saw or Sabre saw Hack saw

2- 10" or 12" pipe wrenches Gloves and safety glasses

3/4" Quarter Round or other wood trim molding approxi- mately 16' long or Trim Accessory 4701 is recommended.

2" x 4" x (length as required) Spacer Blocks (see Close Off Stud Space, page 12).

Oval Vent Kit 9901 is recommended. Vent Enclosure Kit 9812 or 9824 if furnace is to be sur-

face mounted is recommended. 1 x 1 wood strips if Optional Side Outlet Grille Register

6701 is used.

--5--

Installing Your Wall Furnace

The following steps are needed for proper installation and safe operation of your furnace. If you have any doubts as to any requirements, always consult your local Heating or

Plumbing Inspector, Building Department or Gas Utility Company regarding regulations, codes, or ordinances

which apply to the installation of a vented wall furnace.

Obtain professional help where needed.

The CHECK AND ADJUSTMENTS on page 24 are vital

to the proper and safe operation of the furnace. Be sure they are done.

IMPORTANT

For satisfactory and trouble-free operation, be sure to:

1. Properly locate the furnace within the space to be heated.

2. Install the furnace in accordance with local codes or ordinances and instructions provided.

3. Maintain minimum clearance: Floor 0 inches or ceil- ing 4 inches, side wall 4 inches. For exception to

minimum side wall clearance, see Fig. 3, pg. 7.

4. Besure to provide enough combustion and ventilation air.

Locating Wall Furnace & Thermostat

Consider the following points before attempting to install the furnace:

CAUTION

Do not make cut-outs in wall or ceiling before check- ing in the attic for ceiling joist locations and proposed venting.

The counterflow vented wall furnaces are shipped ready to install on the surface of the wall or recessed up to 9-1/4

inches in the wall, with studs 16 inches center-to-center or stud space can be framed-in to 16 inches, see page

10, Recessed Mounting. I_[{'kIP_ll

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 the furnace in a closet, alcove, or small hallway where the furnace could be isolated by closing

doors to the heater space. See Fig. 2 for the minimum

clearances.

The top of the furnace must be at least 4 inches from the ceiling. See Fig. 2.

With standard furnace discharge outlet, do not install closer than 4 inches to intersecting wall. See Fig. 3B,

page 7. When using optional kits 6703or 6704 maintain clearances

as shown in Figs. 3A or 3C, page 7. When using optional kit 6704 maintain clearance as shown

in Figs. 3A and 3F, page 7. Use only optional outlet and grille kits available from manufacturer.

Do not install the furnace in a mobile home, trailer, or recreational vehicle.

The bottom of the furnace may rest directly on a wood or

concrete floor. If floor is other than wood or concrete there must be a piece of wood or sheet metal under the furnace

that is at least the same size as the bottom of the furnace.

On recessed installations the recessed portion may have 0 inches clearance to combustible material.

To provide adequate clearance and service access the

front of the furnace must face the open room. Be sure that gas piping and electrical wiring can be brought to the loca- tion. See sections covering piping and electrical wiring for your type of furnace mounting.

Furnace vent must be installed directly to the outdoors so that combustion gasses will not collect inside the building.

Provide an adequate vent or flue in accordance with local codes or ordinances and instructions provided by the vent

pipe manufacturer. Check the minimum spacing needs as shown in Figs. 2

and 3, pages 6 and 7.

--6--

RNISHED FLOOR

O" MIN.

FOR EXCEPllONS TO MIN. SIDE WALL CLF_CE

_RG.S 3A. ,.3C

,'.'_ k 3F

_/4"MIN WHEN

OPTIONAL ONE-WAY

FRONT DEFLECTING

GRILLE IS USED

A. 3/4 "_- _

12 ¸' _

12"MIN WHEN OPTIONAL T W0 -WAY F_ONT

DEFL [CTING GRILLE

rS USED C.

FJT 67_

OPTIONAL ON[- _'_ I,_- 3/4 MI% WAY f_EAR GRILLE

_IE-WAy FRONT

0PTIONAo__

GRILL[ -MI N

Locating Wall Furnace & Thermostat (Con't)

Choose a location for the thermostat about 5 feet above

the floor on an inside wall. The thermostat wire supplied with your furnace is 20 feet long, which should be enough

....,%

0 _ I_llM A X

GRIU-E IS US[D 1_4" _

KIT I_01

OP_IONA_ rWO-WA_ _.

REAR GRILLE 2 ¸'_ I

to run up through the attic so the thermostat can be a max-

imum of 16 feet from the furnace measured in a straight line, or approximately 12feet from the furnace if the wire is run under the floor. The thermostat should be sensing average room temperature, avoid the following:

HOT SPOTS: Concealed pipes or ducts

Fireplaces Registers

TV sets Radios

Lamps Direct sunlight

Kitchen

After picking a location that meets the requirements, check the walls, attic and roof to make sure there are no obstruc-

tions such as pipes, electric wiring, etc., which could in- terfere with the installation of the furnace or vent pipe. If

required, move them or pick a new location.

WARNING

DANGER OF PROPERTY DAMAGE, BODILY IN- JURY OR LOSS OF LIFE. DO NOT INSTALL FURNACE IN ANY AREA WHERE OXYGEN IS IN

USE.

COLD SPOTS: Concealed pipes or ducts

Stairwells - drafts

Doors - drafts

Unheated rooms on

other side of wall DEAD SPOTS: Behind doors

Corners, and alcoves

Combustion & Ventilation Air

WARNING

DANGER OF PROPERTY DAMAGE,

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.

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 so that infiltrated air is minimal. This creates a pro- blem to supply combustion and ventilation air for gas-fired or other fuel burning appliances. Any use of appliances that pull air out of the house (clothes dryers, exhaust fans, fireplaces, etc.) increases this problem and appliances could be starving for air.

In addition, these energy measures mean that your home will retain more water vapor or a higher relative

humidity.

High humidity, especially during cold weather, may be damaging to buildings because condensation forms on

windows and inside walls. 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 in to 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.

--7--

Combustion & Ventilation Air (cont.)

AIR REQUIREMENTS The requirements for providing air for combustion and

ventilation 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 infiltration.

WARNING

DANGER OF PROPERTY DAMAGE,

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.

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 RE- QUIREMENTS FOR COMBUSTION AND VENTILATION AIR OPENINGS.

Ducts must have the same cross-sectional area 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.

LOUVERS / GRILLES AND SCREENS

COVERING FREE AREA OPENINGS

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

than 1/4 inch 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 a volume 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 6, page 9 shows the minimum area in square feet, bas-

ed on 8 foot ceiling heights, required for different Btuh input ratings.

A. 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 ventila-

tion air. The doors should not fit tight. The cracks around windows should not be caulked or weather

stripped. To determine if infiltration air is adequate, perform the

following checks:

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

DRAFT HOOD SPILLAGE

VENT PIPE

WATER

HEATER

DRAFT HOOD

__MATCH

Turn on all exhausting devices, such as:

__L

WALL

FURNACE

MATCH

DRAFT HOOD OPENING

- kitchen and bathroom exhaust fans

- dryers (gas and electric)

Turn on all vented gas appliances, such as:

- heating equipment (includes any room heaters)

- water heaters

4. Wait ten (10) minutes for drafts to stabilize.

5. Check for draft hood spillage at each appliance. (Hold a lighted match 2 inches from draft opening.

See Fig. 4.)

B. No Spillage

Match flame pulls toward draft hood - this indicates sufficient infiltration air:

1. Return exhausting devices and appliances to the condition you found them.

C. Draft Hood Spills

If there is spillage at a draft hood (match goes out or

flame wavers away from draft hood):

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. Ifyou 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.

m8--

Combustion & Ventilation Air (cont.)

WARNING,

DANGER OF PROPERTY DAMAGE,

BODILY INJURY OR DEATH

DRAFT HOOD 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 PERMA- NENT AIR DUCT iS INSTALLED.

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

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. 9, page 10 under the column for (40,000).

FRESH AIR DUCT

HOLES FROM VENTILATED ATTIC INTO STUD SPACE

SEE FIG 8

provided with free air for proper combustion and ventila- tion of flue gases by one of the following methods.

A. All Air From Inside Building:

If the confined space adjoins an unconfined space as defined in EXAMPLE 1,provide two permanent openings, one within 12 inches of the top and one within 12 inches of the bottom of the room connecting directly to unconfin-

ed space. Each opening must have a free 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

HAVEADEQUATE AIR INFILTRATION AS DEFINED IN EXAMPLE 1.

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

hour.The water heater israted at 30,000 Btu per hour.The totalis80,000 Btu per hour.Youneed two grilles,each with

100 square inchesof free opening. Metal grilles haveabout 60% free area, so you need two metal grilles each with 160 square inches of Iouvered area.

Refer to Fig. 7, page 10, 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.

AIR GRILLE TO STUD SPACE

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 8

Fig. 5 shows a typical duct going into ventilated crawl

space or attic.

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

2. Duct size must be at least 1 inch of free area for each 4000 Btuh of input of all appliances in area.

EXAMPLE 2. FURNACE LOCATED IN CONFINED SPACE.

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

MINIMUM AREA IN SQUARE FEET

4000 Btuh Per

Square lnch

Opening

Round Rectangular

Duct

4" DIA. 4" DIA. 4" D[A. 4" DIA,

4" DIA.

4_ '' DIA

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

Duct

3"x3" SQ. 3"x3" SQ. 3"x4" SQ. 3"x4" SQ. 3"x5" SQ. 3"x5" SQ.

Max. Btuh

Input

30,000

35,000

40,000 45,000

50_00 60_00

*Unconfined Space

Min. Area In Sq. Ft.

8' Ceiling Height

250

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

(defined in EXAMPLE 1) then air must be provided from outdoors or spaces open to outdoors such as attic or 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 outdoors or areas open

to outdoors.

If opening connects directly to, or within vertical duets, the free area of each opening must be at least 1 square

inch per 4000 Btuh combined input of appliances in area.

m9--

188 219

281 312 375

Combustion & Ventilation Air (cont.)

If horizontal ducts are used, the free area of each open- ing must be at least 1 square inch per 2000 Btuh com-

bined input of appliances in area.

GRILLES CONNECTING ROOMS TO MAKE

UNCONFINED SPACE

FOR EXAMPLE: Your furnace is rated at 80,000 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 require each grille or open- ing to have a free area of 40 square inches.

Recessed Mount Installation

FIND THE STUDS (See CAUTION on page 6)

Use a stud Iocator or small finishing nails. Repeatedly drive and remove a nail into the wall in the 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 14-1/2 inches from the

one found. Drive finishing nails on the insides of this stud. Draw wall cut out to required size as shown in Fig. 13,

page 12. If wall studs are not on 16 inch centers see

"CLOSE OFF STUD SPACE," Fig. 12, page 12.

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

power vent.

FREEAREA IN SQ.INCHES - EACHOPENING (FURNACE

ONLY) - BASEDON ONE SQ. INCH PER 4000 8TUH

Furnace

Btuh / Input

30,000 35,000 40,000 45,000 50,000 60,O00

Sq, Inch Sill or Header Plates

of Opening 1_/2'' 2" 3"

7.5 7 4 2

8.75 8 5 2

10.0 9 5 3

11.25 10 6 3

12.5 11 6 3

15.0 13 8 4

Req'd Number of Holes

CUT WALL OPENING

Provide an opening as shown in Fig. 10, page 11. Work

from the top in the attic to cut away the ceiling plate.

ATTACH HEADER PLATE

MODELS: 5508331; 5508332; 6508731; 6508732

Locate header plate (Fig. 10, page 11) between wall studs at 88V2 inches from finished floor and nail into position

with end flanges pointing up.

--10--

Recessed Mount Installation (cont.)

See Fig. 10. MODELS: 5008731; 5008732

Locate header plate between wall studs at 821/2 inches from finished floor and nail into position with end flanges

pointing up. MODELS: 3508331; 3508332; 3508731; 3508732

Locate header plate between wall studs at 74 inches from finished floor and nail intoposition with end flanges point-

ing up,

ALL MODELS

Hole for electrical conduit is located on left side of header plate as you face the wall.

WARNING

REMOVE 4x14 FIBERGLASS GASKET FROM BOT- TOM OF HEADER PLATE AND DISCARD. THIS GASKET IS NOT USED WHEN THE FURNACE IS

RECESSED IN THE WALL.

GAS SUPPLY OPENING A hole must be drilled for the gas line supply.

Decide whether the gas line will come through the floor or wall stud.

NOTE

If a pre-existing gas piping stub location is not compati- ble with hole or knock-out provided in furnace, you may make an alternate entry hole in furnace back wall per Fig.

13, page 12.

CAUTION

Be careful not to damage any furnace components

while making any alternate hole.

Locate and drill one (1) 1-1/2 inch hole at selected loca- tions per Fig. 11and Fig. 13, page 12 or Fig. 14, page !3.

Gas line can be run at this time or done after furnace is mounted, see section GAS SUPPLY AND PIPING, page 17.

F-

_LEXIBLE

ELECTRIC,

ONDUIT

CONVENI ENCE-_

OUTLET

f -- . j

B/W VENT PIPE

(NOT SUPPLIED)

7_r HOLD-DOWN OR

STARTER PLATE

_(NOT SUPPLIED)

HEADER

PLATE

,'- FINISH

FLOOR

N01_: WALL BOARD &

FLOOR PLAI_

REMOVEDFOR

RECIE_ MOUNT

ONLY

SURFACE _ MOUNTING MOUNTING

CLOSE OFF STUD SPACE (If Required)

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

furnace next to an existing stud and frame in the other side

using a 2 x 4 and spacer blocks as required. See Fig. 12,

page 12.

ELECTRICAL SUPPLY ROUGH-IN

Run the electrical supply with the ground wire and ther- mostat cable into stud space above furnace location.

--11 m

Recessed Mount Installation (cont.)

CLOSE OFF STUD SPACE (If Required)

PLA'I_

F I_]b-I1NG b-lUD

Ill

II NEW S'IUD

111

III

E_S71NG S31JDt

]

I -- 14-_/8"_-

..... LI-1 r-!U-I......

If desired, the power supply and thermostat cable can come into the wall stud space from a basement, crawl

space or an adjoining stud space. Terminate flexible electrical conduit at the junction box

located on the underside of the header plate. Leave the wires long enough to connect inside the junction box to

the convenience outlet.

SPACER

III

H I

CAUTION

Do not run wire behind flanges of header plate or in any location where it might be damaged. Avoid

splicing thermostat wire unlessthe spliced wires are properly cleaned, soldered and taped.

.,_,- FRONT

TOP ELEC

_,/" CONN.

[41C ",+--141/6"-_-

BOTTOM

(1) MODELS: 5508331; 5508332;

6508731 ; 6508732 (2) MODELS: 5005731; 5008732 (3) MODELS: 3508331; 3508332;

3508731; 3508732

Surface Mount Installation

FIND THE STUDS AND CEILING JOISTS

(See CAUTION on page 6)

Find two studs at spot where furnace is to be placed. Use a stud indicator or small finishing nails. Repeatedly

drive and remove a nail into the wall in the area of the stud until you find it. Then find one side. Leave the nail

there. Drive another nail just on the other side of the same stud.

Inside edge of the other stud should be about 14-1/2 inches from the one found. Drive finishing nail on inside

edge of this stud.

Using the nails as a guide, draw a line up both sides to

the ceiling to locate hole cut out for vent pipe and elec- trical connections.

CUT CEILING OPENING Mark off and cut 3-1/2 x 12 inch rectangular hole in ceil-

ing, centered between wall studs. The back edge of the opening should be about 1/8 inch from the wall. See Fig.

16, page 14.

ELECTRICAL SUPPLY ROUGH-IN

The electrical supply openings must be made in the wall

or ceiling above furnace to match holes in furnace top. Holes in furnace top are 1 inch from the left side of fur-

nace. See Fig. 13. If desired, the power supply and thermostat cable can

come into the wall stud space from a basement, crawl space or an adjoining stud space.

--12--

Surface Mount Installation (cont.)

At selected location, drill a 1 inch hole for 115V power supply and a 1/2 inch hole for the thermostat cable.

Run wiring through holes to above furnace top leaving

enough excess wire to make electrical connections after

mounting furnace.

CAUTION

Toavoiddamage towiring, be sure to route wire away from path of furnace vent.

GAS SUPPLY OPENING

A hole may need to be drilled for the gas line supply.

Decide whether the gas line will come through the floor

or wall.

NOTE

If you decide to route gas line through right side of fur-

nace, simply remove the knock-out provided in furnace side.

CAUTION

while making any alternate hole.

I e careful not to damage any furnace components

Locate and drill one (1) 1-1/2 inch hole at selected loca- tion per Fig. 11, page 11; Fig. 13, page 12; or Fig. 14.

Gas line can be run at this time or done after the furnace is mounted, see section CONNECTING GAS LINE.

ALTERNATE GAS SUPPLY OPENING

NOTE

If a pre-existing gas piping stub location is not compati- ble with hole or knock-out provided in furnace, you may

make an alternate entry hole in furnace back wall per Fig. 14.

General 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 gases will not collect inside the

building. This furnace must not be connected to a chimney flue

serving a separate solid-fuel burning appliance. Use U.L. listed B/W Vent Kit 9901. You must provide other

items, not contained in kit, necessary to complete your specific venting situation through the roof. Refer to typical venting system shown in Fig. 18, page 15.

Type B/W gas vent shall extend from the header plate of the vented wall furnace to a point above the highest ceil- ing plate within a stud space through which the vent

passes, without any offsets or crossovers thei'ein. After a type B/W gas vent passes through the highest ceiling plate within a stud space above the furnace which it

ALTERNATE GAS SUPPLy---"%._I )--'t

ENTRy LOCA]10N

GAS SUPPL_ ENTRy HOLES

serves, the vent system may be completed with a type B gas vent, of the same manufacturer, and offsets or

breakovers shall not be greater than 45 degrees from

vertical.

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.

First vent pipe offset (if required) is recommended not to be any closer than 2'-0" from header plate.

ATTACH HEADER & HOLD-DOWN PLATE

(SURFACE MOUNT)

Remove the fiberglass flue collar from the furnace flue extension. This gasket is not used when the furnace is sur-

face mounted.

Make sure that the 4 x 4 inch gasket is in position on the header plate.

--13--

General Vent Installation (cont.)

Discard the three (3) square gaskets, as they are not used when furnace is surface mounted.

Slide header plate over the furnace flue extension with the junction box entering the opening in top of furnace.

Refer to Fig. 15.

Fasten to matching holes in the furnace top through holes "A" in the header plate, using two (2) #8 x 3/8 inch screws

provided.

Fasten the hold-down plate or starter plate to the top of

the header plate using holes "B" in the header plate.

j ,,g,,

ALL MODELS

ATTACH HOLD-DOWN PLATE (RECESSED MOUNT) NOTE

INSTALL CEILING PLATE SPACERS (SURFACE MOUNT)

Refer to Fig. 16. Only one (1) plate spacer is required for surface mount-

ing within a single story dwelling. Cut 2 inches off each end of plate spacer. Drill two (2) 3/16 inch holes in each end of plate spacer.

See Fig. 18, page 15.

Fasten plate spacer to wall by nailing through one (1)

drilled hole in each end, into the wall board and ceiling

plate. INSTALL CEILING PLATE SPACER

(RECESSED MOUNT)

Refer to Fig. 17.

Two ceiling plate spacers are in the B/W vent kit. They

mustbe fastened along each longedge of the ceiling hole

to hold the oval vent pipe in the center of the hole.

Nail the ceiling plate spacers either across or in between

the cut out section of ceiling plate. If nailed between, ends

must be bent at 90 degrees.

Header plate should already be attached to wall studs. See ATTACH HEADER PLATE, page 10 and 11.

Fasten hold-down plate to top of header plate using two

(2) screws provided.

CEILING PLATE

"_" r,_4_3V2 CENTERED ON

!1 a/w VENT

TOP ___ HOLE IN

HOLD-DOWN OR

RTER PLATE

r_ (NOT SUPPLIED)

FRONT

SIDE

HEADER PLATE

CEILING PLATE SPACERS - RECESSED MOUNT

_ 14 318

INSTALL SURFACE VENT (SURFACE MOUNT) NOTE

For surface mounting, it willbe helpful to complete the gas piping supply to the furnace before installing the vent pipe. See section GAS SUPPLY & PiPiNG, page 17.

Carefully move the furnace into position under the ceiling cutout.

Insert first lengths of oval, double wall vent pipe up through the ceiling cutout.

--14 m

General Vent Installation (cont.)

TYPICAL VENT INSTALLATION

Vl_IT CAP "rOBE AMINo OF2 FT. HIGHER

THANANYpOINT_ 10 FT. OF _rr C_

HEADER PLA1E

2 E_DS

FLUE

COLLAR

QAS_£T

Lower vent pipe to the hold-down plate. Push the vent pipe into the hold-down plate until it is completely seated. (Hold-down cleats will engage the groove in the vent pipe.)

Secure hold-down plate to vent pipe using two (2) screws.

Using plumbers tape to secure vent to the plate spacer, nail through one (1)hole in each end of plate spacer, into

the wall and ceiling plate.

INSTALL FURNACE VENT (RECESSED MOUNT)

Lower first lengths of oval, double wall vent pipe through the plate spacers to the hold-down plate.

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

Secure hold-down plate to vent pipe using two (2) screws.

COMPLETE THE VENTING

Refer to Fig. 18. Install oval to round adapter. Complete the piping extend-

ing it through the roof. Use 4" round, double wall (Type B) vent pipe, roof flashing, storm collar, and vent top as shown. The vent cap must be at least 2 feet higher than any point that is within 10 feet horizontally of the vent cap.

There must be at least 1 inch clearance between the vent pipe and any combustible material.

Mounting Your Furnace

To obtain adequate clearance for fastening furnace or to

install gas supply fittings, it may be necessary to remove

the burner and control assembly as follows:

Remove burner compartment door by pulling door top out and up.

Locate the air discharge shield. It is secured across the

top of the burner control compartment. Remove two (2)

screws and shield and set aside.

DISCONNECT WIRING MODELS 3508331; 3508332; 5508331; 5508332

Remove the screws holding the ignition control unit and cover to the furnace casing.

Disconnect wires to free control module from its mount- ing location. Mark or tag each wire removed for its exact

reconnection. See Fig, 19, page 16,

IMPORTANT

Area above header within the stud space MUST be kept clear of any attic insulation to allow the free circulation of air around oval vent piping.

ALL OTHER MODELS Disconnect two (2) 24 volt wires from the gas valve.

Disconnect two (2) wire connectors from junction block

midway on the thermocouple.

REMOVE BURNER AND CONTROLS MODELS: 3508331; 3508332; 3508731; 3508732

Locate the burner and screwsthat secure it. Remove the

two (2) screws (one from each end). Lift one end of the

burner at a time until free. Remove burner and controls

from the compartment. ALL OTHER MODELS

Locate the burner and hex nuts that secure it. Remove

the two (2) hex nuts (one from each end). Flip up the wire

hinges. Lift one end of burner at a time until free. Remove burner and controls from the compartment.

--15--

+ 33 hidden pages

Williams 6508732, 6508731, 5508332, 5008732, 5008731 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual