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OWNER'S MANUAL
INSTALLATION INSTRUCTIONS
FORSAIRE
TOP VENT GAS WALL HEATER
MODEL NUMBERS: (natural gas)
3508632 / 3508232 / 5008632 / 5508232 / 6508632
MODEL NUMBERS: (propane gas)
3508631 / 3508231 / 5008631 / 5508231 / 6508631
SAVE THIS MANUAL FOR FUTURE REFERENCE.
READ THIS OWNER'S MANUAL CAREFULLY BEFORE YOU
INSTALL YOUR NEW WILLIAMS WALL FURNACE.
DISCONTINUED MODEL NUMBERS:
3518232 / 3538232 / 3558232 / 3518231 / 3538231 / 3558231
35186232 / 3538632 / 3558632 / 3518631 / 3538631 / 3558631
5518232 / 5538232 / 5558232 / 5518231 / 5538231 / 5588231
6518632 / 6538632 / 6558632 / 6518631 / 6538631 / 6558631
6518232 / 6538232 / 6558232 /6518231 / 6538231 / 6558231
WARNING: This product can expose you to
chemicals including epichlorohydrin which is known to
the State of California to cause cancer and birth defects
and/or other reproductive harm. For information go to
www.p65warnings.ca.gov
WARNING: Improper installation, adjustment,
alteration, service or maintenance can cause injury or
property damage. Refer to this manual. For assistance or
for additional information consult a qualified installer or,
service agency.
250 West Laurel Street, Colton CA 92324 • WWW.WFC-FC.COM • 1-888-444-1212
TM
C OUNTERFLOW
™
VISITEZ NOTRE SITE WEB POUR LA VERSION FRANÇAISE DE CE MANUEL
VISITE NUESTRA PÁGINA WEB PARA LA VERSIÓN EN ESPAÑOL DE ESTE MANUAL
https://www.williamscomfortprod.com/products/furnaces/
35,000 - 65,000 BTU/hr.
WARNING: If the information in these instructions
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 or cell 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 the gas supplier, call the fire
department.
– Installation and service must be performed by a
qualified installer, service agency or the gas supplier.
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Related Manuals for Williams FORSAIRE 3508632
Summary of Contents for Williams FORSAIRE 3508632
- Page 1 3508631 / 3508231 / 5008631 / 5508231 / 6508631 SAVE THIS MANUAL FOR FUTURE REFERENCE. READ THIS OWNER’S MANUAL CAREFULLY BEFORE YOU INSTALL YOUR NEW WILLIAMS WALL FURNACE. DISCONTINUED MODEL NUMBERS: 3518232 / 3538232 / 3558232 / 3518231 / 3538231 / 3558231...
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Page 2: Your Williams Warranty
WARRANTY The manufacturer, Williams Furnace Co., warrants this wall furnace Some states do not allow limitation on how long an implied warranty lasts, and some states do not allow the exclusion or or heater to the original purchaser under the following conditions:... -
Page 3: Table Of Contents
CONTENTS Quick Reference YOUR WILLIAMS WARRANTY Here’s how to: INSTALLATION RECORD TABLE OF CONTENTS INSTALLING YOUR FURNACE Recessed Mount, Surface Mount, SAFETY RULES and Vent Installation are explained starting on page 8. INTRODUCTION BASIC MATERIALS NEEDED OPERATING YOUR FURNACE BASIC TOOLS NEEDED Igniting your furnace for the first time. -
Page 4: Safety Rules
SAFETY RULES type of installation exactly. Use only the type and size WARNING: Read these rules and the instructions of vent pipe and fittings specified. carefully. Failure to follow these rules and instructions BE SURE to provide for adequate combustion and could cause a malfunction of the furnace. -
Page 5: Introduction
INTRODUCTION BASIC DESCRIPTION DO NOT convert the furnace from natural gas to propane The following steps are all needed for proper installation gas or from propane gas to natural gas without the proper and safe operation of your furnace. If you have any doubts manufacturer’s gas conversion kit. -
Page 6: Basic Materials Needed
INTRODUCTION Optional Accessories Basic Tools Needed Hand drill or properly grounded electric drill DIFFUSER GRILLE KITS 6703 & 6704 6703 let’s you route some heated air in a two-way direction. Expansion bit 1/2" to 1-5/8" or 1/2" and 1-1/2" blade bits ... -
Page 7: Installing Your Wall Furnace
INSTALLING YOUR FURNACE Locating Wall Furnace & FIGURE 1 Thermostat Consider the following points before attempting to install FAN BLADE the furnace: TOP FRONT PANEL CAUTION: Do not make cut-outs in the wall or ceiling FAN SHIELD before checking in the attic for ceiling joist locations THUMB SCREW SCREWS and proposed venting. -
Page 8: Combustion & Ventilation Air
INSTALLING YOUR FURNACE FIGURE 3 MINIMUM CLEARANCES FIGURE 2 MINIMUM CLEARANCES CEILING CLEARANCE 4" MIN. 1" MIN. WHEN OPTIONAL 4" MIN. WHEN ONE-WAY FRONT STANDARD DEFLECTING GRILLE GRILLE IS USED IS USED KIT 6704 1" KIT 6801 OPTIONAL TWO-WAY REAR GRILLE 4"... -
Page 9: Air Requirements
High humidity, especially during cold weather, may be EXAMPLE 1 damaging to buildings because condensation forms on FURNACE LOCATED IN UNCONFINED SPACE. windows and insde walls. An unconfined space must have a volume of a minimum The combination of a tight energy efficient home with 50 cubic feet per 1000 BTU/hr. -
Page 10: All Air From Outdoors
INSTALLING YOUR FURNACE FIGURE 4 – DRAFT HOOD SPILLAGE EXAMPLE 2 FURNACE LOCATED IN CONFINED SPACE VENT PIPE VENT PIPE If furnace is installed in a confined space, it must be provided DRAFT HOOD with free air for proper combustion and ventilation of flue OPENING (match or gases by one of the following methods. -
Page 11: Installation
FIGURE 9 If opening connects directly to, or within vertical ducts, the free area of each opening must be at least 1 square inch per Free Area in Square Inches. 4,000 BTU/hr. combined input of appliances in area. Each opening is based on one square inch per 4,000 BTU/hr If horizontal ducts are used, the free area of each opening Required number of holes must be at least 1 square inch per 2,000 BTU/hr. - Page 12 INSTALLING YOUR FURNACE FIGURE 11 WARNING: Remove 4" x 14" fiberglass gasket from bottom of header plate and discard. This gasket is not used when the furnace is recessed in the wall. FIGURE 10 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.
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Page 13: Surface Mount Installation
FIGURE 13 - KNOCKOUT DIMENSIONS See Figure 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. At selected location, drill a 1 inch hole for 115V power supply and a ½... -
Page 14: General Vent Installation
INSTALLING YOUR FURNACE General Vent Installation Fasten the hold-down plate or starter plate to the top of the header plate using holes “B” in the header plate. The vent installation must comply with all local codes and ordinances. If in doubt, consult your local codes or inspector. ALL MODELS The furnace vent must be directed to the outdoors so that harmful combustion gases will not collect inside the building. - Page 15 INSTALL SURFACE VENT (SURFACE MOUNT) FIGURE 17 - CEILING PLATE SPACERS NOTE For surface mounting, it will be 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.
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Page 16: Mounting Your Furnace
INSTALLING YOUR FURNACE Secure hold-down plate to vent pipe using two (2) screws. DISCONNECT WIRING MODELS: 3508231; 3508232; 5508231; 5508232 Using plumbers tape to secure vent to the plate spacer, nail through one (1) hole in each end of plate spacer, into the wall Remove the screws holding the ignition control unit and and ceiling plate. -
Page 17: Gas Supply And Piping
Fasten furnace to floor through holes provided in furnace ALL MODELS Make sure that the flue collar gasket, as shown on Figure bottom. If you have concrete flooring, use an alternate 18, is in place over the flue extension. Check to see if fastening method. -
Page 18: Orifice Sizes
INSTALLING YOUR FURNACE On natural gas the manifold pressure should be 4 inches FIGURE 22 – PROPER PIPING PRACTICE water column. The manifold pressure should be 10.5 inches water column for propane gas. See page 19 for 2 THREADS EXPOSED operation above 2,000 feet altitude. -
Page 19: Electrical Wiring
CHECKING THE GAS PIPING ELECTRICAL SUPPLY Test all piping for leaks. When checking gas piping to Remove three-prong (grounding) service cord from the the furnace with gas pressure less than 1/2 PSI, shut off envelope parts package to install in the furnace. Remove manual gas valve to the furnace. -
Page 20: Thermostat Installation
From the attic, feed the thermostat cable or a stiff wire (Sold Separately) through wall until even with thermostat location. Use Williams thermostat P322016 or any Snag thermostat cable through hole and pull cable millivolt thermostat. through hole in wall so that 6 inches of cable protrudes. -
Page 21: Start Up Procedure
START-UP PROCEDURE Start the furnace using the procedures in section CHECK THE MANIFOLD GAS PRESSURE OPERATING YOUR FURNACE. 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 WARNING: Danger of bodily injury or death. -
Page 22: Operating Your Furnace
“on” position. MODELS: 5008631 / 5008632 / 6508631 / 6508632 Flashback could occur. For models equipped with WILLIAMS gas valve P323209 or P322042: Blower will first operate at low speed then shift to high speed as the furnace heats up. -
Page 23: What To Do If You Smell Gas
OPERATING YOUR FURNACE IMPORTANT: KEEP BURNER AND CONTROL WARNING: The surface of the furnace is hot during COMPARTMENT CLEAN. Make sure the “FOR YOUR SAFETY” operation. Keep children, clothing, furniture, and hang tag (see below) hangs below the heat shield. flammable material away from it. -
Page 24: To Turn Off Gas To Appliance
HOW TO KEEP YOUR COZY FURNACE OPERATING How To Care For Your Furnace Wait five (5) minutes to clear out any gas, then smell for gas, including near the floor. If you then smell gas, WARNING: Danger of bodily injury or death. Turn stop! Follow “B”... - Page 25 CARING FOR YOUR FURNACE ADJUST PILOT BURNER - Figure 28 FIGURE 28 - PILOT FLAME & SPARK GAP Remove screw cover over pilot adjusting screw. Insert small screwdriver, adjust flame as needed. Turn screw counterclockwise to increase flame, clockwise to decrease. Turn thermostat to highest setting.
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Page 26: Forsaire Hardwire Accessory 9940
Be sure this accessory is of the type and design required for use with your furnace. SUMMARY: This accessory converts Williams’ Forsaire The 40077 model series with a single speed motor is Counterflow furnaces using the electric service cord shown in the wiring diagram below. -
Page 27: Wiring Diagrams
WIRING DIAGRAMS MODELS - 3508231 / 3508232 MODELS - 5508231 / 5508232 FORSAIRE COUNTERFLOW TOP VENT GAS WALL HEATER... - Page 28 MODELS - 3508631 / 3508632 MODELS - 5008631 / 5008632 6508631 / 6508632 FORSAIRE COUNTERFLOW TOP VENT GAS WALL HEATER...
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Page 29: Part Numbers For The 350 Model
PART NUMBERS FOR THE 350 MODEL TOP VENT COUNTERFLOW NATURAL PROPANE 3508232 3508632 3508231 3508631 REF. REPLACEMENT PART DESCRIPTION 3508232 / 3508231 / 3508632 / 3508631 Outer Casing, Less Front Panel 12C10 Inner Liner 12B15 Heating Element 12C26 Bottom Front Panel 12B49 Top Front Panel 12B50... - Page 30 EXPLODED VIEW & REPLACEMENT PARTS CHART Thermostat not included with these models. FORSAIRE COUNTERFLOW TOP VENT GAS WALL HEATER...
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Page 31: Control Assembly Replacement Parts 350 Model
CONTROL ASSEMBLY REPLACEMENT PARTS 350 MODELS - INTERMITTENT IGNITION MODEL NUMBERS REF. REPLACEMENT PART DESCRIPTION 3508232 3508231 Valve, Natural Gas P323210 – Valve, Liquid Propane Gas – P322044 Manifold P323657 P323657 Orifice Fitting, Specify Model & Gas Type P090536 P090550 Pilot, Natural Gas P323418 –... -
Page 32: Control Assembly Replacement Parts 350 Model
CONTROL ASSEMBLY REPLACEMENT PARTS 350 MODELS - STANDING PILOT MODEL NUMBERS REF. REPLACEMENT PART DESCRIPTION 3508632 3508631 Valve, Natural Gas P323209 – Valve, Liquid Propane Gas – P322042 Manifold P323657 P323657 Orifice Fitting, Specify Model & Gas Type P090536 P090550 Pilot, Natural Gas P323074 –... -
Page 33: Part Numbers For The 500 / 550/ 650 Models
PART NUMBERS FOR THE 500 / 550 / 650 MODELS TOP VENT COUNTERFLOW NATURAL PROPANE 5008632 5508232 6508632 5008631 5508231 6508631 REF. REPLACEMENT PART DESCRIPTION 5008632 / 5008631 5508232 / 5508231 6508632 / 6508631 Outer Casing, Less Front Panel 7C55-2 –... - Page 34 REF. REPLACEMENT PART DESCRIPTION 5008632 / 5008631 5508232 / 5508231 6508632 / 6508631 Rear Grille, Two-Way, outer boot 10” long, 6801 6801 6801 inner boot 10 3/4” long Rear Grille, Two-Way, outer boot 7/8” long, 6802 6802 6802 inner boot 1 5/8” long Diffusing Grille Kit (Two-Way) 6703 6703...
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Page 35: Control Assembly Replacement Parts 550 Models - Intermitten Ignition
CONTROL ASSEMBLY REPLACEMENT PARTS 550 MODELS - INTERMITTENT IGNITION MODEL NUMBERS REF. REPLACEMENT PARTS DESCRIPTION 5508232 5508231 Manifold P323656 P323656 Orifice Fitting, P332622 P332620 Specify Model and Gas (2 required) Valve, Natural Gas P323210 – Valve, Liquid Propane Gas – P322044 Thermocouple P322042... -
Page 36: Control Assembly Replacement Parts 500 / 650 Models - Standard Pilot
CONTROL ASSEMBLY REPLACEMENT PARTS 500 / 650 MODELS - STANDING PILOT MODEL NUMBERS REF. REPLACEMENT PARTS DESCRIPTION 5008632 5008631 650832 6508631 P323656 P323656 P323656 P32656 Manifold Orifice Fitting, P090542 P332619 P090536 P090551 Specify Model and Gas (2 required) Valve, Natural Gas P323209 –... -
Page 37: Troubleshooting Your Furnace
TROUBLESHOOTING YOUR FURNACE For qualified service technicians. FOR MODELS: 3508631 / 3508632 / 5008631 / 5008632 / 6508631 / 6508632 * Also applicable to Models equipped with an electric intermittent pilot system. ISSUE POSSIBLE CAUSE(S) CORRECTIVE ACTION 1. Pilot will not stay lit A. - Page 38 CORRECTIVE ACTION ISSUE POSSIBLE CAUSE(S) D. Loss of circulating air due D. Check header plate installation and proper use of gaskets. Repair to leakage. as necessary. 6. Furnace operates but turns A. Thermostat location. A. Check location of thermostat. It should not be in the path of warm air “OFF”...
- Page 39 TROUBLESHOOTING YOUR FURNACE For qualified service technicians. FOR MODELS: 3508231 / 350232 / 5508231 / 5508232 (continued from previous page) * Also applicable to Models equipped with an electric intermittent pilot system. ISSUE POSSIBLE CAUSE(S) CORRECTIVE ACTION 4. Pilot lit, but main burner B.
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Page 40: Installations In The State Of Massachusetts
INSTALLATIONS IN THE STATE OF MASSACHUSETTS All installations in the State of Massachusetts must use Have battery back-up power; the following requirements when installing, maintaining Meet ANSI/UL 2034 Standards and comply with or operating direct-vent propane or natural gas-fired NFPA 720 (2005 Edition); and space heaters. -
Page 41: Hints And Information
MODEL NUMBER MFG. DATE CODE PART NUMBER PART DESCRIPTION All parts listed herein may be ordered from your equipment supplier. The Model Number of your Williams wall furnace will be found on the nameplate near gas valve, inside control compartment. -
Page 42: Service Record
SERVICE RECORD DATE MAINTENANCE PERFORMED COMPONENTS REQUIRED FORSAIRE COUNTERFLOW TOP VENT GAS WALL HEATER... - Page 43 NOTES FORSAIRE COUNTERFLOW TOP VENT GAS WALL HEATER...
- Page 44 P322102_C 04/22...
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