Dometic 457915.30X Installation Instructions Manual page 4

INSTALLATION INSTRUCTIONS
A. Precautions
Improper installation may damage equipment,
could endanger life, cause serious injury and/
or property damage.
1. Read Installation and Operating Instructions care-
fully before attempting to start this unit installa-
tion.
2. Dometic, LLC will not be liable for any damages
or injury incurred due to failure in following these
instructions.
3. Installation must comply with the National Electri-
cal 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, LLC.
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. For one unit installation: The unit should be mounted
slightly forward of center (front to back) and cen-
tered from side to side.
2. For two unit installations: Install one unit 1/3 and
one unit 2/3's from front of RV and centered from
side to side.
It is preferred that the unit be installed on a relatively flat
and level roof section measured with the RV parked on a
level surface, but up to a 15° 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
13-1/8"
34-7/8"
Dimensions Are Nominal
18"
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.
It is the responsibility 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. Water standing around the
unit may leak into the interior causing damage
to the product and the RV.
c. Check inside the RV for air distribution box
obstructions (i.e. door openings, room dividers,
curtains, ceiling fixtures, etc.) See FIG. 2.
FIG. 2
2-1/2"
Dimensions Are Nominal
2-3/4"
3"
4
29-7/8"
14-1/4" x 14-1/4"
(±1/8") Opening
Keep This Area Free Of Obstructions
20"
22-1/2"
11-1/4"
11-1/4"
20"
14-1/4" x 14-1/4"
(±1/8") Opening
Dimensions Are Nominal