7
CCC Ducted Installation Instructions
4. AIR DISTRIBUTION SYSTEM
SIZING & DESIGN
The Installer of this air conditioner/heat pump system must design the air distribution system for their particular application.
Several requirements for this system MUST be met for the air conditioner/heat pump to operate properly. These require-
ments are as follows:
A. The duct material must meet or exceed any agency or RVIA Standard that may be in existence at the time the RV is produced.
B. All discharge air ducts must be properly insulated to prevent condensation from forming on their surfaces or adjacent
surfaces during operation of the air conditioner/heat pump. This insulation must be R-7 minimum.
C. Ducts and their joints must be sealed to prevent condensation from forming on adjacent surfaces during operation of the
air conditioner/heat pump.
D. Return air openings must have 40 square inches minimum free area including the lter.
E. Return air to the air conditioner/heat pump must be ltered to prevent dirt accumulation on air conditioner/heat pump
cooling surface.
It is the responsibility of the installer to in-
sure the duct work will not collapse or bend
during and after the installation. Dometic
Corporation will not be liable for roof struc-
tural or ceiling damage due to improperly
insulated, sealed or collapsed duct work.
Return Air Cover Model 3105007.XXX 3308120.XXX
3105935.XXX Genesis Air Filtration System
Roof Cavity Depth 2.0 In. Min. - 5-1/2 In. Max. 2.0 In. Min. - 5-1/2 In. Max.
Duct Cross Sectional Area 21.0 Sq. In. Min. 32.0 Sq. In. Min.
Duct Size
Depth 1-1/2 In. Min. - 2-1/2 In. Max. 2.0 In. Min. - 2-1/2 In. Max.
Width 7.0 In. Min. - 10.0 In. Max. 8.0 In. Min. - 10.0 In. Max.
Total Duct Length 15.0 Ft. Min. - 40.0 Ft. Max. 15.0 Ft. Min. - 40.0 Ft. Max.
Duct Length (short run) 1/3 Total Duct Length 1/3 Total Duct Length
Register Requirements
Number Required Per Run 4 Min. 4 Min.
Register Free Air Area 14.0 Sq. In. 14.0 Sq. In.
Distance From Duct End 5.0 In. Min. - 8.0 In. Max. 5.0 In. Min. - 8.0 In. Max.
Distance From Elbow 15.0 In. 15.0 In.
Total System Static Air Pressure 0.55 - 0.90 In. W.C. 579 Series 0.55 - 0.90 In. W.C. 579 Series
Blower at High Speed, 0.40 - 1.10 In. W.C. 590, 591, 595 Series 0.40 - 1.10 In. W.C. 590, 591, 595 Series
Filter & Grill In Place 0.12 - 0.65 In. W.C. 600, 630 Series 0.12 - 0.65 In. W.C. 600, 630 Series
0.55 - 1.10 In. W.C. 520300, 520310, 0.55 - 1.10 In. W.C. 520300, 520310
520315 & 530515 Series 520315 & 530515 Series
0.70 - 1.10 In. W.C. 520316 Series 0.70 - 1.10 In. W.C. 520316 Series
0.70 - 0.90 In. W.C. 530516 Series 0.70 - 0.90 In. W.C. 530516 Series
Note: Duct sizes listed are inside dimensions.
AIR DISTRIBUTION
DUCT SIZING & DESIGN CHART
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