Duo-Therm 579 Series BRISK AIR Installation & Operating Instructions Manual - Page 8
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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.
Duct Size And Requirements For 3105007.XXX And 3105935.XXX Return Air Cover
FIG. 3
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. 4
Duct Size And Requirements For 33308120.XXX Genesis Air Filtration System
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
FIG. 2
DUCT
FRAME
ROOF
(TOWARD BACK OF RV)
INSULATION
DUCT
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'
INSTALLATION INSTRUCTIONS DUCTED BI-METAL
TOP VIEW
(BACK OF RV)
FRAME
14-1/4" (±1/8")
OPENING
DUCT
AC POWER
SUPPLY WIRE
FRAME
4 CONDUCTOR
THERMOSTAT CABLE
SIDE VIEW
DUCT
14-1/4" (±1/8")
OPENING
CEILING
INSULATION
Roof
Rafters
14-1/4"x14-1/4" (±1/8")
Roof Opening
Roof
Rafters
14-1/4" x 14-1/4" (±1/8")
Roof Opening
8
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