6
3.3.
3.3.
3.
AIR DISTRIB AIR DISTRIB
AIR DISTRIB AIR DISTRIB
AIR DISTRIB
UTION SYSTEMUTION SYSTEM
UTION SYSTEMUTION SYSTEM
UTION SYSTEM
SIZING & DESIGNSIZING & DESIGN
SIZING & DESIGNSIZING & DESIGN
SIZING & DESIGN
The Installer of this Air Conditioner System must design
the air distribution system for his particular application.
Several requirements for this system
MUSTMUST
MUSTMUST
MUST be met for the
Air Conditioner to operate properly. These requirements
are as follows:
A. Roof cavity thickness must be between 2.00" to 5.50".
This distance is measured between roof and ceiling
surface.
B. The total Cross-Sectional Discharge Area of outlet
ducts from the Plenum Area under the Air Conditioner
must be as follows:
1. 579 & 600 Series; 17.5 sq. in.
2. 590 & 595 Series; 21.0 sq. in.
C. Duct Sizing Requirements as follows:
Min. Max.
1. Duct Depth (590 & 595 Series) 1-1/2" 2-1/4"
(579 & 600 Series) 1-1/4" 2-1/4"
2. Duct Width 7.00" — — —
3. Total Duct Length 12 ft. 36 ft.
4. Duct Length (Short Run) 1/3 Total Length
D. Register Requirements as follows:
Min. Max.
1. Distance from Duct End 5" 8"
2. Distance from End of Elbow 15"
3. Distance between Registers 24" —
4. Total Number Required/AC 4 8
5. Number required per Run/AC 2 - - -
6. Free Area per Register 14 sq. in. - - -
E. The Duct material must meet or exceed any agency or
RVIA Standard that may be in existence at the time the
RV is produced.
NOTENOTE
NOTENOTE
NOTE
IT IS THE RESPONSIBILITY OF THE INSTALLER OFIT IS THE RESPONSIBILITY OF THE INSTALLER OF
IT IS THE RESPONSIBILITY OF THE INSTALLER OFIT IS THE RESPONSIBILITY OF THE INSTALLER OF
IT IS THE RESPONSIBILITY OF THE INSTALLER OF
THIS SYSTEM TO INSURE THE DUCT-WORK WILLTHIS SYSTEM TO INSURE THE DUCT-WORK WILL
THIS SYSTEM TO INSURE THE DUCT-WORK WILLTHIS SYSTEM TO INSURE THE DUCT-WORK WILL
THIS SYSTEM TO INSURE THE DUCT-WORK WILL
NOT COLLAPSE OR BEND DURING OR AFTER THENOT COLLAPSE OR BEND DURING OR AFTER THE
NOT COLLAPSE OR BEND DURING OR AFTER THENOT COLLAPSE OR BEND DURING OR AFTER THE
NOT COLLAPSE OR BEND DURING OR AFTER THE
INSTALLATION.INSTALLATION.
INSTALLATION.INSTALLATION.
INSTALLATION.
F. 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. This insulation must be R-7 minimum.
G. Ducts and their joints must be sealed to prevent
condensation from forming on adjacent surfaces
during operation of the Air Conditioner.
NOTENOTE
NOTENOTE
NOTE
THE DOMETIC CORPORATION WILL NOT BE HELDTHE DOMETIC CORPORATION WILL NOT BE HELD
THE DOMETIC CORPORATION WILL NOT BE HELDTHE DOMETIC CORPORATION WILL NOT BE HELD
THE DOMETIC CORPORATION WILL NOT BE HELD
LIABLE FOR ROOF STRUCTURAL OR CEILING DAM-LIABLE FOR ROOF STRUCTURAL OR CEILING DAM-
LIABLE FOR ROOF STRUCTURAL OR CEILING DAM-LIABLE FOR ROOF STRUCTURAL OR CEILING DAM-
LIABLE FOR ROOF STRUCTURAL OR CEILING DAM-
AGE DUE TO IMPROPERLY INSULATED OR SEALEDAGE DUE TO IMPROPERLY INSULATED OR SEALED
AGE DUE TO IMPROPERLY INSULATED OR SEALEDAGE DUE TO IMPROPERLY INSULATED OR SEALED
AGE DUE TO IMPROPERLY INSULATED OR SEALED
DUCT-WORK.DUCT-WORK.
DUCT-WORK.DUCT-WORK.
DUCT-WORK.
H. Return Air Opening must have 40 sq. in. minimum
free area including the filter.
I. Return Air to the Air Conditioner must be filtered to
prevent dirt accumulation on Air Conditioner Cooling
surface.
J. Total System Pressure must be between the follow-
ing:
1. 0.55 to 0.90 in.W.C. for 579 Series
2. 0.40 to 1.10 in.W.C. for 590 & 595 Series
3. 0.12 to 0.65 in W.C. for 600 Series
This is determined with the Air Conditioner Blower
operation on High Speed and Return Air Filter and
Grille in place.
NOTENOTE
NOTENOTE
NOTE
IT IS THE RESPONSIBILITY OF THE INSTALLER OFIT IS THE RESPONSIBILITY OF THE INSTALLER OF
IT IS THE RESPONSIBILITY OF THE INSTALLER OFIT IS THE RESPONSIBILITY OF THE INSTALLER OF
IT IS THE RESPONSIBILITY OF THE INSTALLER OF
THIS AIR CONDITIONER SYSTEM TO INSURE THETHIS AIR CONDITIONER SYSTEM TO INSURE THE
THIS AIR CONDITIONER SYSTEM TO INSURE THETHIS AIR CONDITIONER SYSTEM TO INSURE THE
THIS AIR CONDITIONER SYSTEM TO INSURE THE
STRUCTURAL INTEGRITY OF THE RV ROOF.STRUCTURAL INTEGRITY OF THE RV ROOF.
STRUCTURAL INTEGRITY OF THE RV ROOF.STRUCTURAL INTEGRITY OF THE RV ROOF.
STRUCTURAL INTEGRITY OF THE RV ROOF.
K. The Thermostat must be located on an inside wall of
the RV, 54" above the floor. The Thermostat must
not be located near a heat source.
REGISTERSREGISTERS
REGISTERSREGISTERS
REGISTERS
4 MIN. — 8 MAX. (Per A/C)
14 SQ. IN. FREE AREA
PER REGISTER
14 INCH ROOF
OPENING
ROOF RAFTERS
SHORT RUN DUCT MIN. 1/3SHORT RUN DUCT MIN. 1/3
SHORT RUN DUCT MIN. 1/3SHORT RUN DUCT MIN. 1/3
SHORT RUN DUCT MIN. 1/3
TOTAL DUCT LENGTHTOTAL DUCT LENGTH
TOTAL DUCT LENGTHTOTAL DUCT LENGTH
TOTAL DUCT LENGTH
TOTAL OUTLET
AIR AREA MINIMUM:
17.5 sq. in. - 579 & 600 Series
21.0 sq. in. - 590 & 595 Series
AIR CONDITIONER
DUCTSDUCTS
DUCTSDUCTS
DUCTS
MIN.MIN.
MIN.MIN.
MIN.
MAX.MAX.
MAX.MAX.
MAX.
DEPTH (590 & 595 Series) 1-1/2" 2-1/4"
(579 & 600 Series) 1-1/4" 2-1/4"
WIDTH 7" — —
TOTAL LENGTH 12' 36'
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