Installation Instructions - Dometic 640312 Series Installation And Operating Instructions Manual

INSTALLATION INSTRUCTIONS

A. Precautions
PERSONAL INJURY HAZARD. Failure to obey
these installation instructions may cause seri-
ous personal injury and/or property damage.
1. Read installation and operating instructions care-
fully before attempting to start this unit installa-
tion.
2. Dometic Corporation will not be liable for any
damages or injury incurred due to failure in fol-
lowing these instructions.
3. Installation MUST comply with the National Elec-
trical Code ANSI/NFPA-70 and CSA Standard
C22.1 (latest edition) and any State or Local
Codes or regulations.
4. Do NOT add any devices or accessories to this
unit except those specifically authorized in writing
by Dometic Corporation.
5. This equipment MUST be serviced by qualified
personnel and some states require these people
to be licensed.
B. Choosing Proper Location For The Unit
This unit is specifically designed for installation on the
roof of a recreational vehicle (RV). When determining
your cooling requirements, the following should be
considered:
•
Size of RV;
•
Window area (increases heat gain);
•
Amount of insulation in walls and roof;
•
Geographical location where the RV will be used;
•
Personal comfort level required.
1. Normal locations-The unit is designed to fit over
an existing roof vent opening.
2. Other locations-When no roof vent is available or
another location is desired, the following is rec-
ommended:
a. For one unit installation: The unit should be
mounted slightly forward of center (front to
back) and centered from side to side.
b. For two unit installations: Install one unit 1/3
and one unit 2/3's from front of RV and cen-
tered from side to side.
It is preferred that the unit be installed on a relatively flat
and level roof section with the RV parked on a level sur-
face but up to a 8° tilt is acceptable.
3. After Location Has Been Selected
a. Check for obstructions in the area where unit
will be installed. See FIG. 1.
FIG. 1
40"
Dimensions Are Nominal
12"
Center Line
Of Unit
4"
Dimensions Are Nominal
b. The roof must be designed to support 130
pounds when the RV is in motion. Normally a
200 lb. static load design will meet this require-
ment.
PROPERTY DAMAGE HAZARD. It is the re-
sponsibility of the installer of this system
to ensure structural integrity of the RV roof.
Never create a low spot on the roof where
water will collect. Failure to obey this warn-
ing may cause water damage to the product
and the RV.
c. Check inside the RV for air distribution box
obstructions. (i.e. door openings, room divid-
ers, curtains, ceiling fixtures, etc.) See FIG. 2.
FIG. 2
Air Distribution Box
25"
20"
Dimensions Are Nominal
View From Above
4-15/16"
5-1/8"
Dimensions Are Nominal
4
9-1/2"
29"
Keep These Areas
Free Of Obstructions
14-1/4" x 14-1/4"
(± 1/8") Opening
Front
4"
Front
2-3/4"
(overall
depth)
3"
Front
9-3/16"
Air
6"
5-29/64"
Duct
2-15/16"
3"
14-1/4" x 14-1/4" (±1/8") Opening