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Installation Instructions and Owner’s Manual 

 

Direct-Vent Wall Furnace 

 
 
 

 

 
 
 
 
 
 
 
- 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. 

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. 

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

 
 
 
 
 

 
 

 

MODEL: 

Natural Gas Only 

0743512 

 

 
 
 
 
 
 
 

 
 

MODEL: 

Propane Gas Only 

0743511 

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. 

Summary of Contents for 743511

Page 1: ...losion may result causing property damage personal injury or loss of life Williams Furnace Co 250 West Laurel Street Colton CA 92324 U S A MODEL Natural Gas Only 0743512 MODEL Propane Gas Only 0743511...

Page 2: ...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 Manufacture...

Page 3: ...ce technician to inspect the furnace and to replace any part of the control system and any gas control which has been under water Safety Information for Users of LP Gas Propane LP Gas is a flammable g...

Page 4: ...iff 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 recomme...

Page 5: ...as equipment 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 shall be located or prot...

Page 6: ...m 3 As specified in CGA B149 installation codes 1991 F Clearance to outside corner 12 inches 30 cm minimum Note Local codes or regulations may require different clearances G Clearance to inside corner...

Page 7: ...is horizontal 6 Remove the casing from the furnace body unscrewing the two mounting screws Figure 3 7 Mount the largest tube diameter 4 inches 101 6 mm and the gasket on the unit frame with the screws...

Page 8: ...Each furnace should have its own manual gas cock A manual main gas cock should be located in the vicinity of the unit Where none exists or where its size or location is not adequate contact your local...

Page 9: ...h danger To prevent nuisance and operation of fire alarms ventilate the room for the first two hours of operation Checking the Gas Inlet Pressure The gas inlet pressure can be measured by connecting a...

Page 10: ...rty damage personal injury or loss of life OPERATING INSTRUCTIONS 1 STOP Read the safety information above on this labe 2 Turn gas control knob clockwise to OFF Do not force 3 Wait 5 minutes to clear...

Page 11: ...nnect the test gauge and tighten firmly the screw of the gauge connection then check for gas leaks from it The HI and LO pressures must be adjusted in the way explained above Never try to adjust them...

Page 12: ...06065 Sparking Candle Part Number JGLL064 Nozzle Natural Gas Part Number J12160880 Nozzle LPG Piezo Electric Button Part Number JPZO000 Thermocouple Part Number JTRM000D Burner Part Number J90021028 P...

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