5
A. Choosing Proper Location For Unit
This unit is specifically designed for installation on the roof
of an 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 centered 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. See table below for maximum acceptable tilt.
Model
Number
Max Tilt
(All Directions)
H540315
H540316
15°
3. After Location Has Been Selected:
a. Check for obstructions in the area where unit
will be installed. See (FIG. 1).
FIG. 1
Dimensions Are Nominal
Keep These Air
Flow Areas Free
Of Obstructions
Front
Center Line Of Unit
Roof Opening
13-7/8″
40″
30″
4″
18″
4″
b.
Maintain structural integrity.
Otherwise damage to product and/or RV
could occur.
The roof must be designed to support 130
pounds when RV is in motion. Normally a
200 lb. static load design will meet this re-
quirement.
c. Check inside the RV for return air grille (here-
inafter referred to as “RAG”) obstructions
(i.e. door openings, room dividers, curtains,
ceiling fixtures, etc). See (FIG. 2).
FIG. 2
1-1/2
″
Dimensions Are Nominal
3/4
″
17
″
17
″
1-1/4
″
1-1/2
″
17
″
1-3/4
″
Roof
Opening
17
″
B. Roof Preparation
1.
FIRE OR ELECTRICAL SHOCK
HAZARD. Make sure there are no obstacles
(wires, pipes, etc.) inside RV’s [roof / floor /
walls]. Shut
OFF
gas supply, disconnect 120
Vac power from RV, and disconnect positive (+)
12 Vdc terminal from supply battery
BEFORE
drilling or cutting into RV. Failure to obey these
warnings could result in death or serious injury.
Opening Requirements - Before preparing
the ceiling opening, the type of system op-
tions
MUST
be decided upon. Read all of
the following instructions before beginning
the installation.
2. Carefully mark and cut the required roof opening.
See "B. Roof Requirements" on page (4).
3. Using the roof opening as a guide, cut the match-
ing hole in the ceiling.
INSTALLATION INSTRUCTIONS