General Information; Heat Pump Sizing - Airxcel Maxxair 44000 Serie Instrucciones De Instalación, Operación Y Mantenimiento

These instructions are a general guide for
installing the 44000 Series, 230/240 VAC
®
50Hz MAXXAir roof top heat pumps.
IMPORTANT NOTICE
These instructions are for the use of qualified
individuals specially trained and experienced
in installation of this type equipment and
related system components.
Installation and service personnel are required
to be licensed. PERSONS NOT QUALIFIED
SHALL NOT INSTALL NOR SERVICE THIS
EQUIPMENT.
The words "Shall" or "Must" indicate a
requirement which is essential to
satisfactory and safe product performance.
The words "Should" or "May" indicate a
recommendation or advice which is not
essential and not required but which may
be useful or helpful.
WARNING – SHOCK HAZARD
To prevent the possibility of severe
personal injury or equipment damage due
to electrical shock, always be sure the
electrical power source to the appliance is
disconnected.
CAREFULLY FOLLOW ALL INSTRUCTIONS
AND WARNINGS IN THIS BOOKLET TO
AVOID DAMAGE TO THE EQUIPMENT,
PERSONAL INJURY OR FIRE.
WARNING
Improper installation may damage
equipment, can create a hazard and will
void the warranty.
The use of components not tested in
accordance with these units will void the
warranty, may make the equipment in
violation of state codes, may create a
hazard and may ruin the equipment.
SAFETY WARNING
This appliance is not intended for use by
young children or infirm persons unless
they have been adequately supervised by a
responsible person to ensure they can use
the appliance safely.
I. GENERAL INFORMATION
OEM – Please make sure the
Installation/Owner's Manual accompanies the
heat pump.
INSTALLER AND/OR DEALER – Please
make sure the Installation/Owner's Manual is
presented to the product consumer.
INQUIRIES ABOUT THE A/C UNIT –
Inquiries to your Airxcel, Inc. representative or
NOTE
to Airxcel, Inc. pertaining to product installation
should contain both the model and serial
numbers of the roof top unit. These roof top
heat pumps have model and serial number
identification in two locations : (1) The rating
plate sticker can be seen by removing the
upper unit outer plastic shroud, (2)
model/serial number sticker (silver color) is
located on the return air section of the
basepan of the roof top unit.
Additionally, a sticker is visible on the rear of
the plastic shroud with the Manufacturer Name
and Model Number.
II. HEAT PUMP SIZING
The ability of a heat pump in the cooling mode
to cool a vehicle or maintain a consumer
desired temperature is dependent on the heat
gain of the vehicle. The physical size, the
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 such that the capacity of the air
conditioner is exceeded.
As a general rule, air supplied (discharge air)
in the cooling mode will be 15 to 20 degrees F.
(8 to 12 degrees C) cooler
entering (return air) the ceiling assembly
bottom air grilles.
For example, if the air entering the heat pump
is 80 degrees F. (27 degrees C) (return air),
the supply air (discharge air) into the vehicle
will be 60 to 65 degrees F. (15 to 19 degrees
C). As long as this temperature difference (15
to 20 degrees F, 8 to 12 degrees C) 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 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 vehicle insulation,
window awnings and/or window glass tinting
should be considered.
2
than the air