Williams 1773512, 1773511 User Manual

MODEL:

Natural Gas 1773512

MODEL:

Propane Gas 1773511

Installation Instructions and Owner’s Manual

Direct-Vent Wall Furnace

WARNING: Improper installation, adjustment, 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: Installation and repair must be done by a qualified service person. The furnace should be inspected before use and at least annually by a professional service person.

WARNING: If not installed, operated and maintained in accordance with the manufacturer’s instructions, this

product could expose you to substances in fuel or from fuel combustion which can cause death or serious illness and which are known to cause cancer, birth defects or other reproductive harm.

WARNING: If the information in this manual is not followed exactly; a fire or explosion 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 performed by a qualified installer, service agency or the gas supplier.

Williams Furnace Co., 250 West Laurel Street, Colton, CA 92324 U.S.A.

Table of Contents

General Information and Technical Data

This furnace is design certified to ANSI Z21.86-2004 / CSA 2.32-2004 Gas–Fired Gravity and Fan-Type, Direct-Vent Wall Furnaces as a Fan-Type Direct-Vent Wall Furnace to be installed on an outside wall according to these instructions.

Any alteration of the original design, installed other than as shown in these instructions or used with a type of gas not shown on the rating plate is not permitted.

Instructions to Installer

Installation and repair should be done by a QUALIFIED SERVICE TECHNICIAN.

The installation must conform to local codes or in the absence of local codes; the installation must conform to the National Fuel Gas Code ANSI Z223.1/NFPA 54, Natural Gas and Propane Installation Code CSA B149.1.

Mobile (Manufactured) home installations must conform with the “Manufactured Home Construction and Safety Standard Title 24 CFR, Part 3280” or, when such a standard is not applicable, the Standard for Manufactured Home Installations, ANSI A 225.1 NFPA/501A, Mobile Home Standard, CAN/CSA Z240 MH Series, in Canada. Installer must leave this instruction manual with the home owner after installation. Installer should show the home owner how to start and operate furnace and thermostat. Installer must provide a 1/8-inch NPT plugged tapping for test gauge connection immediately upstream of the gas supply connection of the furnace.

During initial firing of the furnace, residual manufacturing grease will bake out and smoke will occur which is not a health danger. To prevent nuisance and operation of fire alarms, ventilate the room for the first two hours of operation.

WARNING: Any change to this furnace or its controls can be dangerous. This is a heating appliance and any panel, door or guard removed for servicing this furnace must be replaced prior to operating the furnace.

1

Safety Rules and General Warnings

DO NOT OPERATE THIS FURNACE WITHOUT FRONT PANEL INSTALLED

	• Due to high temperatures, the furnace should be	• More frequent cleaning may be required due to excessive
	located out of traffic and away from any	lint from carpeting, bedding materials, etc. It is imperative
	combustible materials such as furniture and	that control compartments, burners and circulating air
	draperies.	passageways of the furnace be kept clean.
	• Children and adults should be alerted to the	• DO NOT put anything around the furnace that will obstruct
	hazards of high surface temperatures and should	the flow of combustion and ventilation air.
	stay away to avoid burns or clothing ignition.	• DO keep the furnace area clear and free from combustible
	• Young children should be carefully supervised
		materials, gasoline and other flammable vapors and
	when they are in the same room as the furnace.	liquids.
	• Clothing or other flammable material should not be	• DO examine venting system periodically and replace
	placed on or near the furnace.	damaged parts.
	• Any safety screen or guard removed for servicing a	• DO examine burner periodically. Clean and replace
	furnace must be replaced prior to operating the	damaged parts.
	furnace.	• DO NOT use this furnace if any part has been under water.
	• Keep burner and control compartment clean.
		Immediately call a qualified service technician to inspect
	• The outside vent cap is hot while furnace is in	the furnace and to replace any part of the control system
		and any gas control which has been under water.
	operation.
	• Installation and repair should be done by a
	QUALIFIED SERVICE TECHNICIAN. The furnace
	should be inspected before use and at least
	annually by a qualified service technician.

Safety Information for Users of LP Gas

Propane (LP Gas) is a flammable gas which can cause fires and explosions. In its natural state, propane is odorless and colorless. You may not know all the following safety precautions which can protect both you and your family from an accident. Read them carefully now, then review them point by point with the members of your household. Someday, when there may not be a minute to lose, everyone’s safety will depend on knowing exactly what to do. If, after reading the following information, you feel you still need more information, please contact your gas supplier.

LP Gas Warning Odor

If a gas leak happens, you should be able to smell the gas because of the odorant put in the LP Gas. That’s your signal to go into immediate action!

•Do not operate electric switches, light matches or use your phone. Do not do anything that could ignite the gas.

•IMMEDIATELY get everyone out of the building, vehicle, trailer or area.

•Close all gas tank or cylinder supply valves.

•LP Gas is heavier than air and may settle in low areas such as basements. When you have reason to suspect a gas leak, keep out of basements and other low areas. Stay out until firefighters declare them to be safe.

•Use your neighbor’s phone and call a trained LP Gas service technician and the fire department. Even though you may not continue to smell gas, do not turn on the gas again. Do not reenter the building, vehicle, trailer or area.

•Have the service technician or fire department air out the area before you return. A properly trained LP Gas service technician must repair the leak, check and relight the gas furnace for you.

2

Some Points to Remember

•Learn to recognize the odor of LP Gas. Your local LP Gas dealer can give you a ”Scratch and Sniff” pamphlet. Use it to find out what the propane odor smells like. If you suspect that your LP Gas has a weak or abnormal odor, call your LP Gas dealer.

•If you are not qualified, do not light pilot lights, perform service, or make adjustments to appliances on the LP Gas system. If you are qualified, consciously think about the odor of LP Gas prior to and while lighting pilot lights or performing service or making adjustments.

•Sometimes a basement or a closed–up house has a musty smell that can cover up the LP Gas odor. Do not try to

light pilot lights, perform service or make adjustments in an area where the conditions are such that you may not detect the odor if there has been a leak of LP Gas.

•Odor fade, due to oxidation by rust or absorption on walls of new cylinders and tanks, is possible. Therefore, people should be particularly alert and careful when new tanks or cylinders are placed in service. Odor fade can occur in new tanks or reinstalled old tanks if they are filled and allowed to set too long before refilling. Cylinders and tanks which have been out of service for a time may develop internal rust which will cause odor fade. If such conditions are suspected to exist, a periodic sniff test of the gas is advisable. If you have any question about the gas odor, call your LP Gas dealer. A periodic sniff test of the LP Gas is a good safety measure under any condition.

•If, at any time, you do not smell the LP Gas odorant, and you should, assume you have a leak. Then take

the same immediate action recommended when you do smell the odorized LP Gas.

• If you experience a complete ”gas out” (the container is under no vapor pressure), turn the tank valve off immediately. If the container valve is left on, the container may draw in some air through openings such as pilot light orifices.

If this occurs, some new internal rusting could occur. If the valve is left open, then treat the container as a new tank. Always be sure your container is under vapor pressure by turning it off at the container before it goes completely empty or having it refilled before it is completely empty.

Technical Data

	OUTPUT HEATING CAPACITY	kW	4.25
		kBTU/hr	14,514
	INPUT RATING	kW	5.19
		kBTU/hr	17,700
	MINIMUM INPUT RATING	kW	3.84
	(LO Input)	kBTU/hr	13,100
	THERMAL EFFICENCY	%	82.00
	LENGTH	mm	553
		in	21-3/4
	HEIGHT	mm	715
		in	28-1/8
	DEPTH	mm	208
		in	8-1/4
	WEIGHT	kg	26
		lbs.	57
	GAS CONNECTION	NPT	3/8
			FEMALE
	WALL HOLE DIAMETER	mm	50
		in	2
	AIR INLET DIAMETER	mm	49
		in	1-7/8
	EXHAUST PIPE DIAMETER	mm	35
		in	1-3/8
	MIN WALL THICKNESS	mm	150
		in	5-7/8
	MAX WALL THICKNESS	mm	500
		in	19-5/8

3

PRESSURE	MAX
MANIFOLD	MIN
	MAX
GAS RATE
	MIN

MINIMUM INLET

PRESSURE

AIR FLOW

MINIMUM AIR FLOW

TOTAL ELECTRICAL LOAD

	NATURAL	mbar
	GAS	in W.C.
	LP	mbar
		in W.C.
	NATURAL	mbar
	GAS	in W.C.
	LP	mbar
		in W.C.
	NATURAL	m3/h
	GAS	ft3/h
	LP	m3/h
		ft3/h
	NATURAL	m3/h
	GAS	ft3/h
		m3/h
	LP	ft3/h
	NATURAL	mbar
	GAS	in W.C.
	LP	mbar
		in W.C.
		m3/h
		cfm
		m3/h
		cfm
		W

7.7

3.1

26.4

10.6

4.6

1.8

16.3

6.6

0.5

17.8

0.2

6.9

0.4

13.3

0.1

5.3

17.4

7.0

27.4

11.0

220

129

160

94

86

WARNING: For the installation of this furnace, the following items must be used in the vent air intake system:

External Vent Cap

(Part Number: WFR–TRM000)

Flanged Air Inlet Tube

(Part Number: WFR–TBO002)

Flue Outlet Tube

(Part Number: WFR–795)

O-Ring

(Part Number: WFN–RNG003)

(All the above items are supplied with the furnace)

Installation

Installation should be done by a QUALIFIED SERVICE TECHNICIAN.

The furnace must be located on an outside wall.

Wall Installation

Minimum clearances from combustible materials:

• Unit to the top surface of carpeting, tile: 2-inches (50 mm)

• Unit to back wall (0” to spacers): 0-inch (0 mm).

• Vent to wall enclosure: 0-inch (0 mm)

• Unit to sidewalls: 3.15-inches (80 mm)

• Unit to ceiling:

10-inches (254 mm)

See Figure 1 showing clearance for installation of vent cap.

Leave at least three-feet in front of the wall furnace for servicing and proper operation. The wall furnace must be

installed in such a way that the external casing can be completely removed for servicing.

If there is a shelf above the furnace, it must be non-combustible. A minimum clearance of 12-inches (300 mm) is recommended between the furnace and the non-combustible shelf above it.

Gas equipment installed in residential garages must be installed so that all burners and burner ignition devices are located not less than 18-inches (460 mm) above the floor. Such equipment must be located, or protected, so it is not subject to physical damage by a moving vehicle.

The vent terminal of this direct-vent furnace must be located at least 9-inches (230 mm) from any opening through which flue gases could enter a building. The bottom of the vent terminal and the air intake must be located at least 12-inches (300mm) above grade.

DO NOT cover the furnace.

Make sure that the correct gas supply is available.

The furnace requires a 120 V 60 Hz electrical supply.

The appliance, when installed, must be electrically grounded in accordance with local codes, or in the absence of local codes with the National Electrical Code ANSI/NFPA 70 (latest edition) or in Canada with CAN/CSA-C22.2 No. 3.

WARNING: The nearest point of the vent cap should be a minimum horizontal distance of six (6) feet (1,830 mm) from any pressure regulator. In case of regulator malfunction, the six (6) feet (1,830 mm) distance will reduce the chance of gas entering the vent cap.

4

Figure 1

1 = Fixed/Closed

2 = Openable

V = Vent Terminal

A = Air Supply

A.Clearance above grade, veranda, porch, deck or balcony 12-inches (30 cm) minimum. (3)

B.Clearance to window or door that may be opened 12inches (30 cm) minimum. (3)

C.Clearance to permanently closed window minimum 12inches (30 cm) recommended to prevent condensation on window.

D.Vertical clearance to ventilated soffit located above the terminal within a horizontal distance of 2-feet (60 cm) from the centerline of the terminal 18-inches (46 cm) minimum.

E.Clearance to unventilated soffit 12-inches (30 cm) minimum clearance to vinyl soffit 36-inches (90 cm) minimum.

F.Clearance to outside corner 12-inches (30 cm) minimum.

G.Clearance to inside corner 18-inches (46 cm) minimum.

H.Not to be installed above a meter/regulator assembly

within 3-feet (90 cm) horizontally from the centerline of the regulator. (3)

I.Clearance to service regulator vent outlet 6-feet (1.8 m) minimum. (3)

J.Clearance to nonmechanical air supply inlet to building

or the combustion air inlet to any other furnace 12inches (30 cm) minimum. (3)

Outside Location for Vent Terminal

K.Clearance to a mechanical air supply inlet 6-feet (1.8 m) minimum. (3)

L.Clearance (1) above paved sidewalk or a paved driveway located on public property 7-feet (2.1 m) minimum. (3)

M.Clearance under veranda, porch, deck or balcony 12inches (30 cm) minimum. (2), (3)

Notes:

(1)A vent shall not terminate directly above a sidewalk or paved driveway which is located between two single family dwellings and serves both dwellings.

(2)Only permitted if veranda, porch, deck or balcony is fully open on a minimum of two sides beneath the floor.

(3)As specified in CGA B149 installation codes (1991).

Note: Local codes or regulations may require different clearances.

Upon delivery, check to make sure the packaging has not been damaged.

1.Remove the furnace from box/packaging taking care not to damage the paper template to be used to mark the holes for mounting the furnace.

2.After marking where the appropriate holes will be, using the above mentioned template, make a 2-inch (50.8 mm) diameter hole.

3.Cut the combustion exhaust and fresh air inlet tubes according to the wall thickness (Figure 2):

Air inlet tube length = wall thickness + 3/32-inches (2.4 mm)

Flue outlet tube length = wall thickness + 1-5/16-inches (7.9 mm)

4.Drill the mounting holes “A” (5 holes) in the wall. If possible use self-tapping screws, drill 1/8-inch diameter holes. If selftapping screws cannot be used, drill 1/4-inch diameter holes and use the plastic anchors provided.

5

5.Install the supporting bracket to the wall; insert the air pipe in the wall through the hole provided in the support bracket. Place the round adhesive gasket around the hole so that the air pipe remains in position. (Figure 3)

6.Attach the supporting bracket with the screws. If possible use self-tapping screws. If self-tapping screws cannot be used, use the plastic anchors provided.

7.Loosen the screws, remove the casing and disconnect the case grounding wire. (Figure 4)

Figure 2

A + 33.3 mm

A + 2.3

Figure 3

Ø 49.2

H

Figure 4

8.Place the adhesive spongy lining behind the unit. (Figure 4)

9.Attach the flue exhaust pipe end (diameter 1-3/8”) on the furnace male pipe connection (Figure 5). BE SURE THAT THE RUBBER SILCONE O-RING GASKET IS IN POSITION.

10.Install the unit to the wall leaning the bottom edge of panel “C” (where the fan is located) on the supporting frame. (Figure

6)Attach the furnace to the support bracket with the two screws.

11.When inside installation is complete, proceed to the location of the vent cap on the external wall. The vent cap should perfectly match the pipe end. Mark the location of the three holes for the screw anchors. (Figure 7) The flue grid must be vertical.

6

12.Remove the vent cap and drill all the necessary holes (diameter ¼ inch for the screw fittings provided with the furnace).

13.Relocate the vent cap and attach it with the screws. (Figure 7)

14.Attach the female end of the three-prong cord to the receptacle located near the bottom of the furnace.

15.Connect the gas supply line. A gas shutoff valve before the furnace must be installed.

16.Reconnect the grounding wire to the casing, attach the casing and tighten the screws.

17.Turn on gas supply and check for gas leaks with soapy water or other suitable means on all gas connections. Correct any gas leaks before operating the furnace.

Figure 5

Figure 6

Figure 7

7