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HYDRO FLAME 

CORPORATION 

 

FURNACE 

 

MAINTENANCE SERVICE MANUAL 

 
 
 
 
 
 
 
 
 

CAUTION: READ PAGE 1 PRIOR TO FIRING YOUR FURNACE! 

 
HYORO FLAME CORPORATION 
1874 South Pioneer Road 
SALT LAKE CITY, UTAH 84104 
Phone (801) 972-4621 
RV-1-1-7 

www.ApacheOwners.com

Summary of Contents for FA-7920S D

Page 1: ...RPORATION FURNACE MAINTENANCE SERVICE MANUAL CAUTION READ PAGE 1 PRIOR TO FIRING YOUR FURNACE HYORO FLAME CORPORATION 1874 South Pioneer Road SALT LAKE CITY UTAH 84104 Phone 801 972 4621 RV 1 1 7 www ApacheOwners com ...

Page 2: ...ly filled with water and it is seldom that all of this water is removed The following often happens when the furnace is in operation The gas in a propane cylinder is liquid as it is drawn off it becomes a vapor as does a small amount of the water Then the gas vapor and water vapor proceed to the small orifice in the pressure regulator at 100 lbs PSI pressure or more Passing through this orifice th...

Page 3: ...should be closed tightly after pilot is lit and before main burner is turned on PILOT OUTAGE If the pilot flame will not stay lit when you release pilot knob check ignition flame size The flame should envelop the top 3 8 to 1 2 of thermocouple and should be approximately 1 1 2 long If pilot flame does not envelop the top 3 8 to 1 2 of the thermocouple with 1 1 2 total length turn pilot gas adjustm...

Page 4: ...C through an outside wall The Furnace should be as near to the center of the vehicle as possible 1 Provide a 11 1 4 High x 8 3 8 Wide Cabinet opening and 2 7 16 High x 4 15 16 Wide outside wall opening as shown in Fig 3 2 On side discharge ducted models remove left side knock out plate and install two duct adapters 3 Slide Furnace into cabinet opening On side ducted Models Slide 4 D1A Ducts over t...

Page 5: ...TIONS FA 79 D Models have direct spark ignition systems conforming to A N S Z2120 standards There is no pilot light To place furnace in operation 1 Turn gas valve to on position NOTE Some models may be equipped with a gas valve that does not have a gas control knob 2 Set thermostat to Lowest temperature setting then to desired temperature if thermostat has an off switch turn to on NOTE On initial ...

Page 6: ... 6 Do not operate the furnace through a battery charger 7 Do not attempt field repairs on the electrical module on D models 8 Do not install the furnace on top of carpeting or store flammable liquids or vapors in the vicinity 9 Do not install furnace where clearances from combustible materials can not be maintained 10 Do not attempt to ignite a direct ignition furnace with a match torch or flint t...

Page 7: ...6 www ApacheOwners com ...

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