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These items must be determined in conjunction with the
Air Distribution System and Sizing and Design Require-
ments listed in the chart on page 6. Terminate the start
of the duct at the back edge of the 14-1/4" x 14-1/4" (±1/
8"). See FIG. 7, 7A, and 7B.
Important:
Alternate configurations and methods
may be used which still allow the air conditioner to
operate properly; however, these alternate configura-
tions and methods must be approved by the Dometic
Corporation in writing. The following instructions are
based upon the use of 3105007 Dometic Return Air Kit,
3105935 Dometic Return Air Kit or 3308120 Genesis Air
Filtration System and a 3109228.001 Comfort Control
TM
Center
.
Duct Size And Requirements For 3105007 And 3105935 Return Air Cover
FIG. 7A
Register Required
Short Duct Run Minimum
1/3 Total Duct Length
Ducts
Min.
Depth
1-1/2"
Width
7.0"
Total Length
15.0'
Register Required
Note: Duct Size is Inside Dimensions
FIG. 7B
Duct Size And Requirements For 3308120 Genesis Air Filtration System Kit
Register Required
Short Duct Run Minimum
1/3 Total Duct Length
Ducts
Min.
Depth
2.0"
Width
8.0"
Total Length
15.0'
Register Required
Note: Duct Size is Inside Dimensions
Total Outlet Air Area
Minimum 21.0 Sq. In.
Max.
2-1/2"
10.0"
40.0'
Total Outlet Air Area
Minimum 32.0 Sq. In.
Max.
2-1/2"
10.0"
40.0'
620515, 620525, 620526, 630515 & 630516 Installation Instructions
FIG. 7
FRAME
LOW VOLTAGE WIRES:
12VDC
Furnace
Load Shed
Sensors
ROOF
INSULATION
DUCT
Roof
Rafters
14-1/4"x14-1/4" (±1/8")
Roof Opening
Roof
Rafters
14-1/4"x14-1/4" (±1/8")
Roof Opening
7
TOP VIEW
(BACK OF RV)
FRAME
14-1/4" (±1/8")
DUCT
OPENING
DUCT
AC POWER
SUPPLY WIRE
FRAME
CCC, CONTROL CABLE(S)
or 7-Wire Analog Cable
SIDE VIEW
(TOWARD BACK OF RV)
DUCT
14-1/4" (±1/8")
OPENING
CEILING
INSULATION
Register Required
Registers
8 Min.-- 12 Max.
(Per Unit)
14 Sq. In Free Area
Per Register
Register Required
Register Required
Registers
8 Min.-- 12 Max.
(Per Unit)
14 Sq. In Free Area
Per Register
Register Required
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