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owner's
manual
MODEL
NOS:
1403621.05
3003621.05
INSTALLATION
& OPERATING
INSTRUCTION
MANUAL
DIRECT VENT
FU RNACE FoR M ANUFAOTOREO
HOME APPLICATIONS
READ THIS OWNERS
MANUAL
CAREFULLY
BEFORE YOU INSTALL
YOUR NEW WILLIAMS
WALL FURNACE
• Unpacking
• Installation
• Operation
• Repair Parts
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:
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 flam-
mable 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,
survice
agency
or the gas supplier.
WILLIAMS
Furnace
Co., 225 Acacia St., Colton, CA 92324
PRINTED IN USA 7/_8
P322874
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Summary of Contents for Williams 1403621.05
- Page 1 1403621.05 3003621.05 READ THIS OWNERS • Unpacking MANUAL CAREFULLY • Installation BEFORE YOU INSTALL • Operation YOUR NEW WILLIAMS • Repair Parts WALL FURNACE WARNING: If the information this manual is not followed exactly, a fire or ex- plosion result...
- Page 2 How To Order Repair Parts ......Back Cover Optional Blower Installation .......... Gas Supply and Piping ........... 10-11 Your Warranty The Manufacturer, Williams Furnace CO, warrants this wall furnace or healer to Ihe original purchaser under the following conditions: LIMITED ONE-YEAR...
- Page 3 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.
- Page 4 Safety Rules WARNING umn. The maximum inlet gas supply pressure is 13" water column. READ THESE RULES AND THE INSTRUCTIONS CAREFULLY. FAILURE FOLLOW THESE ANY SAFETY SCREEN, GUARD OR PARTS RE- RULES AND INSTRUCTIONS COULD CAUSE A MOVED FOR SERVICING AN APPLIANCE MUST BE MALFUNCTION OF THE FURNACE.
- Page 5 Unpack Your Furnace lost or damaged before you need them. This direct-vent furnace is packaged complete including the vent cap, vent tube and air inlet tube ready for instal- NOTE: lation on an exterior wall with a total thickness of from 5 inches minimum to a maximum of 9 inches.
- Page 6 Locating Wall Furnace Consider the following points before attempting to install MINIMUM DIMENSIONS FROM VENT the furnace: ALL MODELS 1. This is a direct vent wall furnace. It must be installed on an OUTSIDE WALL for proper venting of flue gases (Fig.
- Page 7 Locating Wall Furnace (cont.) HOT SPOTS: COLD SPOTS: Concealed pipes or ducts Concealed pipes or ducts Stairwells - drafts ALL MODELS Fireplaces Doors - drafts Registers TV sets Unheated rooms on Choose a location for the thermostat about 5 feet above Radios other side of wall DEAD SPOTS:...
- Page 8 Installation (cont.) IMPORTANT GAS AND ELECTRICAL SUPPLY OPENINGS Holes must be drilled for the gas line (and electrical For walls more than 9 inches thick, read note below. supply if you use an optional Blower Kit). Drill a 1-1/2 NOTE inch hole in wall for gas line where indicated...
- Page 9 Installation (cont.) INSTALL VENT CAP POSITION OF VENT CAP Outside, place a single strip of mastic (provided) around the back flange of the vent cap ("G" Fig. 5, page 8). In- EXTERIOR WALL WITH VENT stall the vent cap by inserting it into the air inlet tube and over the vent tube.
- Page 10 Gas Supply & Piping Do not thread pipe too far. Valve distortion or malfunc- Gas control valve, within the furnace, is shipped with a seal over gas inlet tapping. Do not remove this seal until tion may result from excess pipe within control. ready to connect piping.
- Page 11 Gas Supply & Piping (cont.) Tighten all joints securely. GAS PIPE SIZES CHECKING THE GAS PIPING NATURAL GAS PIPE CAPACITY - BTU PER HOUR Test all piping for leaks. When checking gas piping to the (INCLUDES FITTINGS) furnace with gas pressure at less than 1/2 PSI, shut off PIPE SIZE manual gas valve for the furnace.
- Page 12 Thermostat Installation (cont.) 6. Snag thermostat cable through wall so that 6 inches 3. Push any excess wire back through hole in wall and of cable protrudes. plug hole with insulation to prevent drafts from affect- ing thermostat operation. 7. Route cable to wall furnace leaving enough excess cable to make the connections at the gas valve.
- Page 13 Furnace Technical Information HTG. CAP. MODEL TYPEI INPUT* MAIN BURNER OFIFICE RATING RATING NUMBER GAS IBTU/HR BTU/HR DRILL DEC. QTY. 10,059 1405621.05 i L.P. 114,000 .0420 10,059 1405622.051 NAT.I 14,000 .0670 21,849 5005621.05 L.P. 150,000 .0595 21,849 .0955 5005622.05 NAT.150,000 *For elevations above 2000 feet reduce ratings 4% for each 1000 feet above sea level.
- Page 14 Start-Up Procedure Start the furnace using the procedures in section CHECK THE GAS INPUT (NATURAL GAS ONLY) Operating Your Furnace on pages 15 through WARNING WARNING NATURAL GAS HEATING VALUE (BTU PER CUBIC DANGER OF BODILY iNJURY OR DEATH FOOT) CAN VARY SIGNIFICANTLY, THEREFORE, IT IS THE INSTALLER'S RESPONSIBILITY TO SEE LIQUEFIED PETROLEUM (L.R) GAS IS HEAVIER...
- Page 15 Operating Your Furnace Refer to this sheet and sheet 16 for "Safety, Operating IF GAS CONVERSION IS REQUIRED, IT MUST BE Instructions" and "Turn Gas Off To Appliance." These DONE BY A QUALIFIED TECHNICIAN. Input and output furnaces are equipped with a manually operated piezo shown on the rating plate, located in burner compartment spark ignition device to ignite the pilot gas.
- Page 16 FOR YOUR SAFETY, READ BEFORE LIGHTING WARNING: If you do not follow these instructions exactly, a fire or explosion may result causing property damage, personal injury or loss of life. This appliance has a pilot which must be lighted • If you cannot reach your gas supplier, call the fire department.
- Page 17 Gas Conversion WARNING CONVERSION MUST BE DONE BYA NOTE: ALL MODELS ARE FACTORY SET FOR L.P. QUALIFIED SERVICE TECHNICIAN. GAS USAGE. IF CONVERSION IS REQUIRED TO FAILURE COMPLY WITH INSTRUCTIONS NATURAL GAS FOLLOW INSTRUCTIONS BELOW COULD RESULT IN PERSONAL INJURY, PROPER- EXACTLY.
- Page 18 How To Care For Your Furnace MAINTENANCE BURNER FLAME It is recommended that a competent serviceman perform Start the furnace and let it operate about 10 minutes then these checks at the beginning of each heating season: look at the burner flame. Flames should be soft and blue, see Fig.
- Page 19 Troubleshooting Gravity Direct Vent Wail Furnace SYMPTOM POSSIBLE CAUSE CORRECTIVE ACTION 1. Pilot will not stay lit after Thermocouple or gen- Check pilot flame - must impinge on thermocou- erator producing insuffi- carefully following pie or generator. Be sure thermocouple or generator cient millivoltage.
- Page 20 Troubleshooting ... (cont.) SYMPTOM POSSIBLE CAUSE CORRECTIVE ACTION 4. Furnace oper_es Sensing bulb not located Check location of sensing bulb - should be attach- turns "Off" before room ed to back of control valve. properly. (Bulb control temperature is attained, model.) B.
- Page 21 Williams Direct Vent Gas-Fired Wall Furnace REPLACEMENT PARTS OPTIONAL BLOWER ACCESSORY 2302 MODEL: 3003621.05 ONLY I_ANUFACTURE'S AUTHORIZED PARTS REF. PART NO. DESCRIPTION 6A24 SWITCH BRACKET 6B3,3 SWITCH BOX P,321017 SWITCH-PULL CHAIN P129700 SWITCH-AUTOMATIC 6A23 SWITCH BOX COVER MOTOR P130600 MOTOR SUPPORT...
- Page 22 Williams Direct Vent Gas-Fired Wall Furnace REPLACEMENT PARTS FOR MODEL: 1403621 05 REF. PART NO. DESCRIPTION 8C28 CASING WRAPPER 8A72 ELEMENT SHIELD 8B61 COMBUSTION CHAMBER P147001 FLUE TUBE GASKET 8B62 INNER CASING P147001 FLUE TUBE GASKET P147000 AIR PAN GASKET...
- Page 23 Williams Direct Vent Gas-Fired Wall Furnace REPLACEMENT PARTS FOR MODEL: 1 405621.05 FOR PARTS LISTING SEE PAGE 22. ONLY MANUFACTURER'S AUTHORIZED PARTS. -23-...
- Page 24 Williams Direct Vent Gas-Fired Wall Furnace REPLACEMENT PARTS FOR MODELS: 3003621.05 REF. PART DESCRIPTION 6C62 CASING WRAPPER 6B149 ELEMENT SHIELD P147001 FLUE TUBE CASKET 6A190 FLUE EXTENSION (MAX. 9" THICK WALL) P147000 AIR PAN GASKET 6C51 AIR INLET COLLAR (MAX.
- Page 25 Williams Direct Vent Gas-Fired Wall Furnace REPLACEMENT PARTS MODEL: 5005621.05 FOR PARTS LISTING SEE PAGE 24. USE ONLY MANUFACTURER'S AUTHORIZED PARTS. -25-...
- Page 26 Williams Direct Vent Gas-Fired Wall Furnace REPLACEMENT PARTS MODEL: 1405621o05 REF. NO. PART DESCRIPTION P168400 CAST IRON BURNER 8AI05 CONTROL DOOR WITH P147100 GASKET P304800 GAS VALVE (CONVERTIBLE-PRESET FOR LP. GAS) 7675 CONVERSION KIT (NAT. GAS) 8A57 MANIFOLD WITH P147200...
- Page 27 Williams Direct Vent Gas-Fired Wall Furnace CONTROL ASSEMBLY MODEL 1403621.05 P322016 FOR PARTS LISTING SEE PAGE 26. USE ONLY MANUFACTURE'S AUTHORIZED PARTS. CONTROL ASSEMBLY MODEL 3003621.05 -27-...
- Page 28 All parts listed herein may be ordered from your equip- information: ment supplier. 1. MODELNUMBER The Model Number of your Williams wall furnace will be 2, MFG, DATE CODE 3. PARTNUMBER found on the rating plate near gas valve, inside control compartment.