Other; Leveling; Ventilation - Dometic RM2150 Series Service Manual

SECTION 9

OTHER

9.1 LEVELING

Leveling is one of the requirements for proper operation
with absorption refrigerators. The absorption design
utilizes no mechanical pumps or compressors to circu-
late the refrigerant within the system, so proper leveling
must be maintained to provide the correct refrigerant
flow. Without proper leveling, refrigerant within the
cooling unit will collect and stagnate at certain areas.
Without proper refrigerant flow, the cooling process will
stop. The RM2150, RM2190 and RM2201 Refrigerators
have a type of cooling unit that utilizes an enclosed
pump tube surrounded by a solution to protect the
assembly. To ensure proper leveling with these models,
the vehicle needs to be leveled so it is comfortable to
live in. (No noticeable sloping of floor or walls). When
the vehicle is moving, leveling is not critical as the rolling
and pitching movement of the vehicle will pass to either
side of level, keeping the refrigerant from accumulating
in the piping.

9.2 VENTILATION

Ventilation is one of the requirements for proper cooling
unit operation. The coach vent system must be able to
provide a way to direct the hot air, produced by the action
of the cooling unit, out away from the installation of the
refrigerator. The refrigerator extracts heat from the interior
of the refrigerator cabinet and dissipates the heat out
through the vent system. In a proper installation there
RM2201
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COACH WALL
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Burner Plate or
Working Counter
Before installing,
attach the self-
the rear of the
front frame
FLOOR LEVEL
INSTALLATION
10
should be zero (0") clearance surrounding the sides and
top of the refrigerator to achieve proper air flow. All
potential dead air pockets should be blocked or baffled to
ensure that heat won't be trapped in these spaces and
reduce efficiency. In addition, the cooling unit should be
at least one inch (1") from the nearest surface made of
combustible material.
NOTE: Refrigerators should be installed in accordance
with appropriate installation instructions received with the
refrigerator.
AIR VENTS
NOTE: If clearance between back of
cooling unit and wall of vehicle is
more than 2 inches, it is advisable to
make and fit a metal deflector plate
across the back of the recess (as
illustrated above) to direct the air
flow through the condenser fins of
the unit.
TURNING VAN
PATH OF AIR FL0
1" CLEARANCE FROM
COMBUSTIBLE
MATERIALS
sealing strip to the
rear of the front
frame
INSTALLATION ABOVE
FLOOR LEVEL