Atwood Mobile Products Atwood Mobile Products Furnace 7920-II User's Manual

Atwood Mobile Products Furnace User's Manual - Atwood Mobile Products Furnace 7920-II.
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THIS INSTRUCTION MANUAL IS FOR USE BY AN AUTHORIZED SERVICE
TECHNICIAN TO INSTALL AN ATWOOD

- hydro flameTM 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

TO CASING SPACERS

(SCREW HEADS)

Extension Box

Rear

Bottom

TO CASING SPACERS

(SCREW HEADS)

ENGLISH, FRANCAIS (et Canada)

•Installation

Effective 1/08

MPD 32072

hydro flameTM

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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