SeaMach 24 VDC
Rooftop Air Conditioners
SeaMach 24 VDC Rooftop Air Conditioner Installation Manual 5/2013 Page 4 of 20
Again, give careful consideration to the heat gain variables. During extreme outdoor temperatures, the
heat gain of the vehicle or vessel may be reduced by:
Keeping the vessel in a shaded area•
Keeping windows and doors closed•
Avoiding the use of heat producing appliances•
Using window shades (blinds and/or curtains)•
For a more permanent solution to high heat gain situations, additional insulation, window awnings and/or
window glass tinting should be considered.
Chapter 4 - Selecting An Installation Location
Is the roof of the vehicle or vessel capable of supporting both the roof top unit and ceiling assembly without
additional support structures? Inspect the interior ceiling mounting area to avoid interference with existing
structural members such as: bunks, curtains, tracks or room dividers. The depth of the ceiling assembly
shroud is 3” (7.6 cm). Be sure to check clearance for doors which must be swung open (refrigerator,
closets, cabinets).
Chapter 5 - Installing The Roof Top Unit
DANGER - SHOCK HAZARD
DISCONNECT ALL POWER BEFORE PERFORMING ANY CUTTING. CONTACT WITH
HIGH VOLTAGE CAN RESULT IN EQUIPMENT DAMAGE, PERSONAL INJURY OR
DEATH.
CAUTION
TO PREVENT DAMAGE TO THE WIRING AND BATTERY, DISCONNECT THE BATTERY
CABLE FROM THE POSITIVE BATTERY TERMINAL BEFORE PERFORMING ANY
CUTTING TO THE VEHICLE OR VESSEL.
Once the location for your air conditioner has been determined (See Chapter 4), a reinforced and framed
roof hole opening must be provided (may use existing vent hole). Before cutting into the roof, verify that
the cutting action will clear all structural members and crossbeams. Additionally, the location of any inner
roof plumbing and electrical supplies must be considered.
If a roof vent is already present in the desired mounting location for the air conditioner, the following A.
steps must be taken:
Remove all screws which secure the roof vent to the vehicle. Remove the vent and any additional 1.
trim materials. Carefully remove all caulking from around the roof vent opening to obtain clean
exterior roof surface.
It may be necessary to seal some of the old roof vent mounting screw holes which may fall outside 2.
of the air conditioner basepan gasket.
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