Dometic 57908.321 - AIR DISTRIBUTION DUCT INSTALLATION

9
CCC Ducted Installation Instructions
C. AIR DISTRIBUTION DUCT INSTALLATION
1. Install the Air Distribution Ducts in the RV Roof Cavity. The Distribution System must meet:
a. RV’s requirements
b. System requirements listed in Section 4 on page 6 of this Manual. Terminate the start of the Duct at the back
edge of the 14-1/4" x 14-1/4" (±1/8") opening previously cut. See FIG. 2, 3, & 4.
FIG. 2
FIG. 3
FIG. 4
Duct Size And Requirements For 3105007.XXX And 3105935.XXX Return Air Cover
Duct Size And Requirements For 3308120.XXX Genesis Air Filtration System
Ducts Min. Max.
Depth 1-1/2” 2-1/2”
Width 7.0” 10.0”
Total Length 15.0’ 40.0’
Total Outlet Air Area
Minimum 21.0 Sq. In.
Register Required
Register Required
Register Required
Register
Required
Roof
Rafters
Note: Duct Size Is Inside Dimensions
Short Duct Run Minimum
1/3 Total Duct Length
Registers
8 Min.-- 12 Max.
(Per Unit)
14 Sq. In Free Area
Per Register
14-1/4"x14-1/4" (±1/8")
Roof Opening
Air Conditioner
Front
Return
Air
Ducts Min. Max.
Depth 2.0” 2-1/2”
Width 8.0” 10.0”
Total Length 15.0’ 40.0’
Total Outlet Air Area
Minimum 32.0 Sq. In.
Register Required
Register Required
Register Required
Register
Required
Roof
Rafters
Note: Duct Size Is Inside Dimensions
Short Duct Run Minimum
1/3 Total Duct Length
Registers
8 Min.-- 12 Max.
(Per Unit)
14 Sq. In Free Area
Per Register
14-1/4"x14-1/4" (±1/8")
Roof Opening
Air Conditioner
Front
Return
Air