Dometic FreshJet3 Series User Manual

12
EN
Pre-installation Rooop Air Conditioner (Air Distribution Box, Wall Thermostat Controls)
7.3 Preparing the RV roof opening
NOTICE: The roof opening must be structurally framed
to provide adequate support and to prevent air from
being drawn from the roof cavity. Framing stock with
0.75 in. (19 mm) or more thickness must be used.
Remember to provide an entrance hole for the power
supplies, thermostat wiring, and 12V power at the front
of the opening. See Figure 8.
This section describes how to prepare the RV roof
opening.
7.3.1 Using an existing roof vent opening
I
If the roof does not have an existing roof vent, go to
“Making a new roof opening” on page12.
This section describes how to prepare the RV roof when
using an existing vent.
1. Shut off the gas supply, disconnect the 115 VAC
power from the RV, and disconnect the positive (+)
12VDC terminal from the supply battery.
2. Unscrew and remove the roof vent.
3. Remove the caulking compound around the
opening.
4. Seal the screw holes and seams where the roof
gasket will be located. Use a good grade of
all-weather sealant.
5. Measure the roof opening (review “Placement
requirements” on page7). If the roof opening
is within specifications, go to “Routing the supply
wiring to the roof opening” on page13.
6. If the opening needs to be resized, proceed to
“Making a new roof opening” on page12.
– If the opening exceeds 14.4 x 14.4 in.
(366 x 366mm), it will be necessary to reduce the
size of the opening.
– If the opening is less than 14.1 x 14.1in.
(358 x 358mm), it will be necessary to enlarge
the opening.
7.3.2 Making a new roof opening
I
If the roof has an existing roof vent, see “Using an
existing roof vent opening” on page12.
This section describes how to prepare the RV roof when
making a new roof opening.
1. Shut off the gas supply, disconnect the 115 VAC
power from the RV, and disconnect the positive (+)
12VDC terminal from the supply battery.
2. Carefully mark the required roof opening. See
“Placement requirements” on page7.
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7 Structure for a new roof opening
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3. Make sure the new opening does not compromise
the roof’s structural integrity.
– Do not cut the roof structure or the raers.
– The raers should remain supported by a cross
beam.
– The opening should be between the raers.
4. Carefully cut the required roof opening.

Dometic FreshJet3 Series Specifications

General

Brand	Dometic
Model	FreshJet3 Series
Category	Air Conditioner
Language	English