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I. GENERAL INFORMATION
OEM – Please make sure all documentation
accompanies the Air Conditioner.
INSTALLER AND/OR DEALER – Please make sure
all documentation is presented to the product
consumer. The product consumer should also be
afforded the opportunity to purchase the OPTIONAL
THREE (3) YEAR PARTS REPLACEMENT
CONTRACT available from Airxcel, Inc.
For more information about the contract, please review
the sample contract located at
www.Aixcel.com/Warranty. Use the application on the
back of the OPERATION AND MAINTENANCE
INSTRUCTIONS to apply for the extended parts
contract.
INQUIRIES ABOUT THE UNIT – Inquiries to your
AIRXCEL, Inc. representative or to Airxcel, Inc.
pertaining to product installation should contain both
the model and serial numbers of the roof top air
conditioner. These rooftop air conditioners have model
and serial number identification in two locations: (1)
Rating Plate sticker – may be viewed by looking
through the shroud louvers on the compressor side of
the roof top air conditioning unit. [The rating plate
sticker can be viewed without removing the outer
plastic shroud.] (2) Model/Serial number sticker (silver
color) – located on the return air section of the basepan
of the rooftop air conditioner. If the air conditioner is
installed, the sticker may be viewed by lowering the
ceiling assembly shroud.
II. AIR CONDITIONER SIZING
The ability of an air conditioner to cool down a vehicle
or maintain a consumer desired temperature is
dependent on the heat gain of the vehicle. The physical
size of the vehicle, the amount of window area, the
quality and amount of insulation, the exposure to
sunlight, the number of people using the vehicle and
the outside temperature, may increase the heat gain to
such an extent that the capacity of the air conditioner is
exceeded.
As a general rule, air supplied (discharge air) from the
air conditioner will be 15 to 20 degrees F cooler than
the air entering (return air) the ceiling assembly bottom
air grilles.
For example, if the air entering the air conditioner is 80
degrees F (return air), the supply air (discharge air) into
the vehicle will be 60 to 65 degrees F. As long as this
temperature difference (15 to 20 degrees F) is being
maintained, the unit is operating properly.
Again, give careful consideration to the vehicle heat
gain variables. During extreme outdoor temperatures,
the heat gain of the vehicle may be reduced by:
• Parking the vehicle in a shaded area
• Keeping window 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 vehicle insulation, window
awnings and /or glass tinting should be considered.
III. SELECTING AN INSTALLATION LOCATION
Your Airxcel, Inc. air conditioner has been designed for
use primarily in recreational vehicles.
Is the roof 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”. Be sure to
check clearance to doors which must be swung open
(refrigerator – closets – cabinets).
Most of the time, roof mount air conditioners are
installed at existing roof vent locations. If there are no
roof vents (existing mounting hole), the following
placement locations are recommended:
Motorhome – a single unit or the forward of two units
should be mounted within 9 feet of the driver’s
compartment.
Travel Trailers or Mini-Homes – a location should be
selected that is near the door slightly forward of the
vehicle center length.
Vans – location should be in the center of the roof (side
to side – front to back).
Truck with Camper – location should be between 4 to
5 feet from the rear of the camper to achieve maximum
cooling effect.
IV. INSTALLING THE ROOF TOP UNIT
This air conditioner is to be installed in accordance with
NFPA Standard 501C.
If the air conditioner is being installed on a low friction
roof surface such as aluminum, steel or gelcoat
fiberglass, it is advisable to order a spring pad kit, part
number 8333-3871. “Spring pads” maintain bolt tension
and retard lateral motion of the air conditioner which
could shear the mounting bolts.
If the air conditioner is being installed subject to heavy
lateral loads, it is advisable to order a “Roughneck”
gasket/bolt package, part number 48207-3301 to
maintain bolt tension, prevent lateral movement of the
air conditioner and guard against bolt shear.
A. STANDARD INSTALLATION
Once the location for your air conditioner has been
determined (See Section III), a reinforced and framed
roof hole opening must be provided (may use existing
roof vent opening). Before cutting into the vehicle 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.
1. If a roof vent is already present in the desired
mounting location for the air conditioner, the
following steps must be taken.
a. Remove all screws which secure the roof vent to
the vehicle. Remove the vent and any additional
trim materials. Carefully remove all caulking from
around the roof opening to obtain clean exterior
roof surface.
b. It may be necessary to seal some of the old roof
vent mounting screw holes which may fall outside
of the air conditioner basepan gasket.
c. Examine the roof opening. If the opening is
smaller than 14 x 14, the opening must be
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