Placement Requirements - Dometic Brisk Air Installation And Operation Manual

Value Air Distribution Box (ADB), Mechanical

3 .6 Placement Requirements

The rooftop component is specifically designed for
installation on the roof of an RV. To determine where to
place the rooftop component, consider the following
items:
• A 14.3 in. x 14.3 in. (363 mm x 363 mm)
[±0.1 in. (3 mm)] square opening and hereinafter
referred to as "roof opening" is required. The
roof opening is part of the return air system of
the rooftop component and must be finished in
accordance with NFPA 1192.
• The rafter/joist support frames must be spaced
no greater than 16.0 in. (406 mm) on center. The
rooftop component is designed to fit over an existing
roof vent opening.
• The distance between the roof and the RV ceiling
must be between 1.5 in. (38 mm) and 6.0 in.
(152 mm).
• When no roof vent is available or when another
location is desired, an opening must be cut through
the roof and ceiling of the RV. This opening must
be located between the roof reinforcing members.
Consider these recommendations along with your
cooling needs:
– For a single rooftop component: mount the
rooftop component slightly forward of the RV's
center (front to back) and centered from side to
side.
– For two rooftop components: measuring from
the front of the RV and centering from side
to side, mount the first rooftop component
at 1/3 the length of the RV and the second
rooftop component at 2/3 the length of the RV.
EN
3 .6 .1 Tilt Requirements
When measuring for placement, confirm the following
tilt requirements.
1. Make all measurements while the RV is parked on a
level surface.
2. Install the rooftop component on a flat and level roof
section.
3. Use the tilt allowance table to determine the
maximum acceptable roof tilt.
Tilt Allowance
Model Number
457915, 459516
B57915, B59516
540315, 540316
H540315, H540316,
FJX3473,FJX3573
640312, 640315,
640316, 640312C,
640315C, 640316C
General Information
Maximum Tilt
(All Directions)
15°
8°
9