Hydro Flame FA-7920S D, Maintenance Service Manual

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HYDRO FLAME FA-79 AND HF-80 SERIES
INSTALLATION AND OPERATING INSTRUCTIONS
Sealed combustion system (Direct vent) Appliances for installation in Recreational Vehicles (Not tested for use with air
filters or air conditioning)
Model input Bonnet Type Electrical
No. BTU/hr. Capacity Gas Rating
FA-7920S (D or P) 19.500 15,600 Propane 12V.D.C. 29 AMP
FA-7920F (D or P) 19.500 13,650 Propane 12V,D.C. 2.9 AMP
FA-7916S (D or P) 16,000 12,800 Propane 12V.D.C. 2.7 AMP
FA-7916F (D or P) 16,000 11,200 Propane 12V.D.C. 2.7 AMP
FA-7912S (D or P) 12,000 9,600 Propane 12V.D.C. 2.7 AMP
FA-7912F (D or F) 12,000 8.400 Propane 12V.D.C. 2.7 AMP
HF.8012 (D or F) 12,000 8,400 Propane 12V.D.C. 1.6 AMP
Letters after the Model Number stand for:
S = Side Ducted F = Front Discharge D = Direct Spark Ignition P = Piezo Ignition
Overall Dimensions
Minimum Clearances to Combustibles
Length: 20 5/8" Top & Sides 1/4"
Height: 11 1/2" Air tube 0"
Width: 9 5/8" Rear 0"
Shipping wt.: 18 lbs. Front As required for servicing
INSTALLATION
This Furnace must be installed in accordance with these instructions and all National or Local Codes and CSA
standards Z240.4 and Z240.6.1 or Z240,6.2
The Furnace must be installed with the combustion air box (B) and exhaust tube (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 the adapters and seal with
duct tape.
4. Gas Piping: Connect Gas supply line with a capacity to provide 11" W.C. Pressure to the gas control inlet fitting
(3/4" minimum 0.0. tubing must be used) do not twist gas valve during piping.
5. Be sure that the Entire gas system is tight, properly supported and free of leaks. Do not fire any appliance until the
entire system is fully checked out. Use a soap and water solution to detect gas leaks, never a lighted match or
flame.
NOTE : If local codes require an external gas "Shut off Valve", it must be located outside the furnace casing.
6. Electrical Wiring: With the Junction box cover removed route battery or 12V.D.C. and termostat leads through
opening on the right side of furnace casing and connect to furnace wiring.
CONNECTIONS
Supply Leads
Furnace Wiring
12V.D,C. (+ & One Thermostat TO Thermo & 12V.D.C. +
12V.D.C. (-) TO 12V. D.C. -
One Thermostat TO Thermostat
Observe polarity of leads when connecting.
NOTE : Supply leads other than thermostat should be 14 GA. Mm.
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