Roof Preparation - Dometic 57908.321 Installation Instructions Manual

INSTALLATION INSTRUCTIONS
FIG. 2
Dimensions Are Nominal
13"
39-5/8"
18"
Center Line Of Unit
Keep This Area Free Of Obstructions
Dimensions Are Nominal
FIG. 3
Model
600312
600315
12"
Center Line Of Unit
4"
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. 4).
Model
520300
520310
520315
520316
29-7/8"
Roof Opening
Front
9-1/2"
Keep These Areas
Free Of Obstructions
Front
4"
Roof Opening
Dimensions Are Nominal
FIG. 4
3/4"
17"
1-1/4"
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.
 O pening 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.
4.  Maintain structural integrity. Oth-
erwise damage to product and/or RV could oc-
cur.
 NEVER create a low spot on RV
roof. Otherwise, water will pool and could cause
a leak.
6
17"
17"
1-1/2"
Roof
Opening
1-3/4"
1-1/2"
17"