Owner’s Manual Save this manual for future reference.
Warranty & Installation Record – 2 Warranty The manufacturer, Williams Comfort Products, 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 replaced at the Manufacturer’s option, FOB to its factory. 2.
Contents Your Williams Warranty .................................................................2 Installation Record .........................................................................2 Table of Contents ..........................................................................3 Safety Rules ..................................................................................4 Introduction....................................................................................5 Basic Description ...........
Safety Rules 9. 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 TO THE NATIONAL FUEL GAS CODE, ANSI Z223.1.
Introduction – 5 Introduction Basic Description The following steps are all needed for proper installation and safe operation of your furnace. If you have any doubts as to any requirements, check with local authorities. Obtain professional help where needed. All of the checks and adjustments in the “Start-Up Procedures” are vital to the proper and safe operation of your furnace. Please read our instructions before you install and use your furnace. This will help you obtain the full value from this furnace.
Introduction Optional Accessories DIFFUSER GRILLE KITS 6703 & 6704 OVAL VENT KIT 9929 Let’s you route some heated air in a two-way direction. Kit 6704 for one-way direction. 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 the furnace. See page 16 for additional items you will need. SIDE OUTLET GRILLE KIT 6702 Allows you to direct heated air from the side of furnace into the same room.
Installing Your 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 lnspector, 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. 1. Locate the furnace properly within the space to be heated.
Installing Your Furnace FIGURE 3 Minimum Clearances With standard furnace discharge outlet, do not install closer than 4 inches to intersecting wall. Choose a location for the thermostat (optional) about 5 feet above the floor on an inside wall.
Installing Your Furnace AIR REQUIREMENTS FIGURE 4 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 heated area by means of ventilation grilles or ducts connecting directly to the outside or spaces open to the outdoors such as attic or crawl space.
Installing Your Furnace 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-square inch per 4000 Btu/hr.
Installing Your Furnace FIGURE 7 Grilles Connecting Rooms to Make Unconfined space FIGURE 8 Air from Outdoors or Crawl Space Openings for inlet or outlet air should not be made into attic area if attic is equipped with a thermostat controlled power vent. FIGURE 9 Free Area Btu/hr./Input FOR EXAMPLE: Your furnace is rated at 50,000 Btu/hr. The water heater is rated at 30,000 Btu/hr. The total is 80,000 Btu/hr.
Installing Your Furnace MODELS: 3508231; 3508232; 3508631; 3508632 Locate header plate between wall studs at 74 inches from finished floor and nail into position with end flanges pointing up. WARNING: Remove 4”x14” fiberglass gasket from bottom of header plate and discard. This gasket is not used when the furnace is recessed in the wall. Locate and drill one (1) 1-1/2 inch hole at selected locations as shown on Page 12, Fig. 11 and Page 13, Fig. 13 or Page 14, Fig. 14.
Installing Your Furnace FIGURE 12 Closed Off Stud Space (If Required) 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.
Installing Your Furnace NOTE If you decide to route gas line through right side of furnace, simply remove the knock-out provided in furnace side. NOTES If a pre-existing gas piping stub location is not compatible with hole or knock-out provided in furnace, you may make an alternate entry hole in furnace back wall per Fig. 14. 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 location as shown on Page 12, Fig.
Installing Your Furnace ALL MODELS ATTACH HOLD-DOWN PLATE (RECESSED MOUNT) 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. NOTE Header plate should already be attached to wall studs. See ATTACH HEADER PLATE, on Page 11 and 12. Fasten hold-down plate to top of header plate using two (2) screws provided.
Installing Your Furnace COMPLETE THE VENTING Refer to Fig. 18. FIGURE 18 Typical Vent Installation Install oval to round adapter. Complete the piping extending 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.
Installing Your Furnace PART NUMBER P321900 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. POSITION FURNACE (RECESSED MOUNT ONLY) NOTE If your furnace is surface mounted, your mounting was started during VENT INSTALLATION, page 14. To complete furnace mounting, go on to FASTEN FURNACE BOTTOM on this page.
Installing Your Furnace Gas Supply and Piping Gas control valve, within the furnace, is shipped with a seal over the 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 rate orifices sized for commercially pure propane gas.
Installing Your Furnace The following rules apply: 1. Use new, properly reamed pipe free from metal chips and debris such as steel or black iron pipe. Use fittings approved by local codes. 2. Do not thread pipe too far. Valve distortion or malfunction 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, use compound resistant to action of liquefied petroleum gases. 3. Use ground joint unions. 4.
Installing Your Furnace Thermostat Installation (Sold Separately) 1. Use Williams thermostat P322016 or any millivolt thermostat. FIGURE 24 Route Thermostat Cable 2. 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. 3. If a new location is chosen or if this is a new installation, thermostat cable must first be run to the location selected.
Installing Your Furnace Start-Up Procedure Start the furnace using the procedures in section OPERATING YOUR FURNACE. WARNING: Danger of 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 the area is ventilated. Never attempt start-up of unit before thoroughly ventilating area. Check the furnace operation as outlined in the following instructions.
Operating Your Furnace Operating Your Furnace STANDING PILOT MODELS 3508631; 3508632; 5008631; 5008632; 6508631; 6508632 ELECTRONIC IGNITION MODELS* 3508231; 3508232; 5508231; 5508232 NOTE: For models equipped with WILLIAMS gas valve P323209 or P322042 refer to this page and page 23 for "SAFETY & LIGHTING INSTRUCTION" and "TURN GAS OFF TO APPLIANCE.
Care – 23 Operating Your Furnace 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. 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.
Caring for Your Furnace How To Care For Your Furnace WARNING: Danger of bodily injury or death. Turn off electric power supply at the disconnect switch, fuse box or service panel before removing any doors or access or service panels from the unit. CABINET FINISH Clean the cabinet with damp rag. Never use abrasive cleaners. Cabinets are finished in heat resistant powder coated finish - DO NOT refinish with wall paint.
Care – 25 Caring for Your Furnace How To Care For Your Furnace BURNER CLEANING TO REMOVE BURNER(S) Check burner. If cleaning is required, contact a qualified service technician to clean and service burner. Disconnect gas line inside cabinet. WARNING: Danger of bodily injury or death. Make sure electric power and gas supply are off before removing panels or doors, etc. Refer to "Mounting Your Furnace" section (pages 16 and 17).
Caring for Your Furnace Furnace Technical information Furnace Technical Information Model Number Gas Type Main Burner Orifice Input** Rating Btu/hr. DRILL DEC. QTY. 35,000 #36 .106 1 .070 1 3508632 NATURAL 3508631 L.P. 35,000 #50 3508232 NATURAL 35,000 #36 .106 1 3508231 L.P. 35,000 #50 .070 1 5008632 NATURAL 50,000 #42 .093 2 5008631 L.P. 50,000 N/A .060 2 5508232 NATURAL 55,000 N/A .094 2 5508231 L.P. 55,000 N/A .062 2 6508632 NATURAL 65,000 #36 .
Care – 27 Troubleshooting FOR MODELS: 3508631; 3508632; 5008631; 5008632; 6508631; 6508632 *Also applicable to Models equipped with an electric intermittent pilot system. (Continued on next page) SYMPTOM 1. Pilot will not stay lit after following lighting instructions. POSSIBLE CAUSE A. Thermocouple producing insufficient millivolts. B. Loose or dirty thermocouple connection at gas valve. Thermocouple defective. C. D. E. 2. Main burner will not come ON - pilot burning and thermostat set for heat. 3.
Troubleshooting SYMPTOM room temperature is attained. 7. Furnace operates but will not shut "OFF" when room temperature is attained. 8. Abnormal operation. POSSIBLE CAUSE CORRECTIVE ACTION B. Defective thermostat. Check thermostat calibration or replace. A. Thermostat wiring defective. Thermostat location. Check thermostat wiring from furnace to thermostat - may be shorted together by a nail or staple.
Care – 29 Troubleshooting SYMPTOM 4. Pilot lit, but main burner won't come ON. POSSIBLE CAUSE CORRECTIVE ACTION B. Broken or shorted electrode assembly. A. Faulty ignition control. Remove wire at "PV/MV" terminal at the ignition control, being careful not to touch any metal parts; disconnect the electrode wire at the ignition control. Connect one end of a jumper wire to terminal "GND". (DO NOT REMOVE EXISTING WIRE.) Attach the other end of the jumper wire to the metal blade of a small screwdriver.
Wiring Diagrams Wiring Diagrams MODELS - 3508231/3508232 30 MODELS - 5508231/5508232
Accessories– 31 Wiring Diagrams MODELS - 3508631/3508632 MODELS - 5008631/5008632 6508631/6508632 FOR 50/65M B.T.U.
Replacement Parts 3508231; 3508232; 3508631; 3508632 USE ONLY MANUFACTURER’S AUTHORIZED PARTS FOR PARTS LIST SEE PAGES 36 AND 37.
Replacement Parts 40 36 & 37.
Replacement Parts 5008631; 5008632; 5508231; 5508232; 6508631; 6508632 USE ONLY MANUFACTURER’S AUTHORIZED PARTS FOR PARTS LIST SEE PAGES 38 AND 39.
Replacement Parts 38 & 39.
Replacement Parts List REPLACEMENT PARTS FOR MODELS 3508231; 3508232; 3508631 and 3508632 Ref.
Replacement Parts List Thermocouple ––– ––– P233100 P233100 Flame Sensor P271100 P271100 ––– ––– 41 50mm BURNER P323648 P323648 P323648 P323648 42 43 44/48 45 46 47 49 50 51 52 Thermostat Ignition Control Unit Wire Assembly Ignition Control Wires Manifold Adapter Ignition Shield Front Burner Bracket Manual Spark Igniter Piezo Igniter Bracket Pal Nut P322016 P321900 P321935/35A 31B036 P321887 11B155 9B234 ––– ––– ––– P322016 P321900 P321935/35A 31B036 P321887 11B155 9B234 ––– ––– ––– P322
Replacement Parts List REPLACEMENT PARTS FOR MODELS 5008631; 5008632; 5508231; 5508232; 6508631 and 6508632 38 PART NO. FOR MODEL Ref.
Replacement Parts List 42 43 44 45 46 Manifold Orifice Fitting, Specify Model and Gas (2 required) Valve, Natural Gas P323656 P323656 P323656 P323656 P323656 P323656 P332619 P090542 P332620 P332622 P090551 P090536 ––– P323209 ––– P323210 ––– P323209 Valve, Liquid Propane Gas P322042 ––– P322044 ––– P322042 ––– Thermostat P322016 P322016 P322016 P322016 P322016 P322016 Thermocouple P233100 P233100 ––– ––– P233100 P233100 ––– ––– P323073 P323648 P323649 ––– P322048/48
Forsaire Hardwire Accessory - 9940 Installation Instructions This Kit is for use with Models: 3508331; 3508332; 3508731; 3508732; 4007331; 4007332; 4007731; 4007732; 5008731; 5008732; 5507331; 5507332; 5508331; 5508332; 6008531; 6008532; 6257731; 6257732; 6508731; 6508732 WARNING: Danger of bodily injury. Turn off electric power supply at disconnect switch, fuse box or service panel before working on the furnace.
Service Record Date Maintenance Performed Components Required
Service Record Date 42 Maintenance Performed Components Required
Service Record Date Maintenance Performed Components Required
Hints and Information Service Hints If your furnace fails to work correctly, you may avoid the inconvenience and cost of a service call by checking the troubleshooting section on pages 27 thru 29 before you call for service. 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 or this or any other appliance.
