Pre-Installation; Determining Your Cooling Needs; Preparing The Rv Roof Opening - Dometic Brisk Air Installation And Operation Manual

Rooftop Air Conditioner (Universal Air Distribution Box, Mechanical Controls)
G GRN/YEL
L
WHT
N
1
BLK
2
YEL
3
4
RED
5
6
Elec Conn
GRN/YEL
From A/C
14 Air distribution box for all models
- - - - - - Field wiring
---------- Factory wiring
• Line splice

7 Pre-installation


WARNING: FIRE OR ELECTRICAL SHOCK
HAZARD . Failure to obey these warnings
could result in death or serious injury .
• Shut off the gas supply, disconnect the 115 VAC
power from the RV, and disconnect the positive
(+) 12 VDC terminal from the supply battery before
drilling or cutting into the RV.
• Make sure there are no obstacles such as wires or
pipes inside the RV's roof.
• Provide grounding in compliance with all applicable
electrical codes.

CAUTION: LIFTING HAZARD .
Use proper lifting technique and control when lifting
the rooftop component. Two people are required to
life the rooftop component to the roof.Failure to obey
this caution could result in minor or moderate injury.
EN
BLK
Rotary Switch
1 L1
2 H
4 C
BLU
BLU
C,4
H,6
L,3
Thermostat
NOTICE: Failure to follow these notices could
result in damage to the rooftop component and/
or the RV .
• Never create a low spot on the RV roof.
• Maintain the structural integrity of the RV roof. The
roof must be designed to support 130 lbs (59 kg)
when the RV is in motion. Normally, a 200 lb (91 kg)
static load design will meet this requirement.
• Read this entire section before beginning the
installation.
This section describes how to install and set up the unit.

7 .1 Determining your cooling needs

When determining your cooling requirements, consider
the following items:
• The size of the RV
• The RV window area (which could increase heat gain)
• The amount of insulation in the walls and the roof
• The geographical location where the RV will be used
• The personal comfort level required

7 .2 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 0.8 in. (19 mm) or more thickness must be used.
Remember to provide an entrance hole for power
supplies at the front of the opening. See Figure 16.
This section describes how to prepare the RV roof
opening.
7 .2 .1 Using an existing roof vent opening
I If the roof does not have an existing roof vent, skip
to "Making a new roof opening" on page 14.
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.
Pre-installation
13