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620515, 620525, 620526, 630515 & 630516 Installation Instructions
7
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
Center
TM
.
FRAME
14-1/4" (±1/8”)
OPENING
AC POWER
SUPPLY WIRE
DUCT
FRAME
DUCT
ROOF
INSULATION
DUCT
CEILING
DUCT
14-1/4" (±1/8”)
OPENING
INSULATION
SIDE VIEW
(TOWARD BACK OF RV)
TOP VIEW
(BACK OF RV)
LOW VOLTAGE WIRES:
12VDC
Furnace
Load Shed
Sensors
FRAME
CCC, CONTROL CABLE(S)
or 7-Wire Analog Cable
FIG. 7
Register Required
FIG. 7A
FIG. 7B
Duct Size And Requirements For 3105007 And 3105935 Return Air Cover
Duct Size And Requirements For 3308120 Genesis Air Filtration System Kit
Total Outlet Air Area
Minimum 21.0 Sq. In.
Total Outlet Air Area
Minimum 32.0 Sq. In.
Register Required
Register Required
Register Required
Register Required
Register Required
Register Required
Register Required
Roof
Rafters
Roof
Rafters
Note: Duct Size is Inside Dimensions
Note: Duct Size is Inside Dimensions
Short Duct Run Minimum
1/3 Total Duct Length
Short Duct Run Minimum
1/3 Total Duct Length
Ducts Min. Max.
Depth 1-1/2” 2-1/2”
Width 7.0” 10.0”
Total Length 15.0’ 40.0’
Ducts Min. Max.
Depth 2.0” 2-1/2”
Width 8.0” 10.0”
Total Length 15.0’ 40.0’
14-1/4"x14-1/4" (±1/8")
Roof Opening
14-1/4"x14-1/4" (±1/8")
Roof Opening
Registers
8 Min.-- 12 Max.
(Per Unit)
14 Sq. In Free Area
Per Register
Registers
8 Min.-- 12 Max.
(Per Unit)
14 Sq. In Free Area
Per Register