Furrion FFG30FA - Determining an Installation Type and Cutout Sizing

Mounting the Furnace - Horzontial
Front Gas Only
Rear Gas Only
#8 x 1½” screw
#8 x 1½” screw
For vertical installation:
Rear Gas
Connection
Front Gas
Connection
Mounting the Furnace - Vertical
#10 x ¾” screw
#10 x ¾” screw
#8 x 1½” screw
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It is important that adequate return air be provided to assure
normal heating and operation of the furnace. Failure to
provide the minimum return air will cause erratic furnace
cycling.
Return air should be isolated from affecting any free air
supply needed for other combustion appliances. i.e. ranges,
cooktops, refrigerators.
NOTERVs that have a wall of separation to a cargo area
(Toy Box) to transport internal combustion engine vehicles
must not have return air openings from this area.
Refer to the chart below for minimum return air requirements.
Return Air Requirements
Minimum Free (unobstructed) Area 55 in
NOTE: Return air must be from within the living area of the
RV.
Minimum Clearance to Combustibles
The minimum clearances allowed between the surface of the
furnace and combustible objects (board, wall, floor, etc) are
shown in the table.
Clearance to Combustibles*
Top 1"
Left Side 1"
Right Side 1"
Bottom 1"
Floor 0"
Back 0"
Exhaust and Intake Tube 
* Combustibles are carpet, vinyl, tile, plywood, or similar
building materials.
NOTE: 0” means in contact with the furnace surface. The
clearance from ducts to combustible materials is ¼". (Except
UL rated duct certified for 0" clearance to combustibles)
Determining an Installation Type and
Cutout Sizing
Determine the appropriate installation type and prepare the
cutout dimensions per the appropriate figure below.
Installation Type and Cutout Dimensions
Installation Type Access Panel Cutout Dim.
A Customer supplied panel
See graphB Furrion access panel
C No panel
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Horizontal Installation
Vertical Installation
Horizontal Installation Vertical Installation
Horizontal Installation Vertical Installation
Furnace Support Surface Furnace Support Surface
Furnace Support Surface Furnace Support Surface
Furnace Support Surface Furnace Support Surface
Furnace Support Surface Furnace Support Surface
Furnace Support Surface Furnace Support Surface
Furnace Support Surface Furnace Support Surface
RV Exterior Wall
Cutout
8 ¼" (±⁄")
210 mm (±3mm)
RV Exterior Wall
Cutout
RV Exterior Wall
Cutout Center Line
Cutout
RV Exterior Wall
Cutout
RV Exterior Wall
Cutout
8 ¼" (±⁄")
210 mm (±3mm)
18 ¼" (±⁄")
463 mm (±3mm)
RV Exterior Wall
Cutout
17 ¾" min.
451 mm
8" min.
203 mm
8" min.
203 mm
17 ¾" min.
451 mm
Furnace Bottom
Furnace Bottom
Furnace Bottom
Furnace Bottom
Furnace Bottom
Furnace Bottom
18 ¼" (±⁄")
463 mm (±3mm)
3
3
/8"
86 mm
6
13
/16"
173 mm
2
1
/16"
52 mm
Ø 2 ¾"
70 mm
2
1
/16"
52 mm
Ø 2 ¾"
70 mm
3 ⅜"
86 mm
English
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