1
THIS INSTRUCTION MANUAL IS FOR USE BY AN AUTHORIZED SERVICE
TECHNICIAN TO INSTALL AN ATWOOD - hydro flame
TM
FURNACE.
INSTALLER
: LEAVE THIS MANUAL WITH THE APPLIANCE.
CONSUMER: RETAIN THIS MANUAL FOR FUTURE REFERENCE.
This furnace design has been certified by the American Gas
Association and Canadian Gas Association for installation in
recreation vehicles as a MSP Category III furnace. Follow this
installation instruction to insure safe operation of the furnace.
Failure to install furnace according to this installation instruction
nullifies the furnace warranty.
SAFETY ALERT SYMBOLS
Safety Symbols alerting you to potential personal safety hazards.
Obey all safety messages following these symbols.
WARNING CAUTION
avoid possible avoid possible
injury or death injury and/or property damage
INDEX
FURNACE SPECIFICATIONS ..............................................................1
DIMENSIONS ..................................................................1
WEIGHT ........................................................................1
DUCTING CONFIGURATION................................................................1
MINIMUM CLEARANCE TO FLOORBOARDS, WALLS,
& SIMILAR COMBUSTIBLE BUILDING MATERIALS..................................2
SAFETY INFORMATION ................................................................1-2
FURNACE INSTALLATION ..............................................................2-4
CUTOUTS ..................................................................................2
DUCTING................................................................................2-3
Flexible Ducting......................................................................2
Venting Chart ........................................................................3
OPTIONAL INSTALLATION - DIRECTIONAL AIR BOX ....................................3
PROPANE GAS CONNECTION ............................................................3
ELECTRICAL CONNECTIONS..............................................................3
Thermostat Installation ............................................................3
Door Installation ....................................................................3
SYSTEM CHECK TESTS ....................................................................4
PROPANE GAS PRESSURE ..............................................................4
FIGURES 1-8 (INCLUDING DC WIRING DIAGRAM) ..........................................4
REPLACEMENT PARTS LIST & DRAWING ..............................................8
SPECIFICATIONS (W.C. = Water Column)
MODEL # 7912-II 7916-II 7920-II 8012-II
Input BTU/HR 12,000 16,000 18,000 12,000
Output Capacity BTU/HR 9,160 12,160 13,680 9,120
Duct Static Pressure - .20" W.C. .10" W.C. .10" W.C. N/A
12 Volt Amperage (AMPS) 3.4 3.4 3.4 1.8
Watts 40.8 40.8 40.8 21.6
Power Supply (Volt DC) 12 12 12 12
MINIMUM RETURN AIR 35 in
2
35 in
2
35 in
2
35 in
2
DIMENSIONS
WEIGHT
ALL MODEL WIDTH HEIGHT DEPTH
Casing 8-3/8˝ 11-3/8˝ 20-5/8˝ FURNACE 23 lbs
Door 9-7/8˝ 11-1/2˝ 1-1/4˝ SHIPPING 25 lbs
MINIMUM CLEARANCE TO
FLOORBOARDS
, WALLS & SIMILAR COMBUSTIBLE BUILDING MATERIALS
MUST BE PROVIDED THE FULL LENGTH AND WIDTH OF UNIT
Top and Sides 0˝ TO CASING SPACERS (SCREW HEADS)
Extension Box 0˝
Rear 0˝
Bottom 0˝ TO CASING SPACERS (SCREW HEADS)
ENGLISH, FRANCAIS (et Canada) •Installation
Effective 1/08
MPD 32072
hydro flame
TM
7900-II / 8000-II
Series Furnace
Technical Installation Manual
9
ONE
side duct
BOTH
side ducts
FRONT
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 of this or any
other appliance.
— WHAT TO DO IF YOU SMELL GAS
• Evacuate all persons from vehicle.
• Shut off gas supply at gas container or source.
• Do not touch any electrical switch, or use any
phone or radio in vehicle.
• Do not start vehicle’s engine or electric generator.
• Contact nearest gas supplier or qualified Service
Technician for repairs.
• If you cannot reach a gas supplier or qualified
Service Technician, contact the nearest fire
department.
• Do not turn on gas supply until gas leak(s) has
been repaired.
— Installation and service must be performed by a
qualified Service Technician, Service Center or
gas supplier.
79/80 SERIES 79 SERIES 79 SERIES
80 SERIES ( 8012-II)
DUCTING CONFIGURATIONS
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