5
GENERAL INFORMATION
This single package gas heating / electric cooling unit is designed
only for outdoor rooftop or ground level slab installations and
can be readily connected to the high static duct system of a
home. This unit has been tested for capacity and efficiency
in accordance with AHRI standards and will provide many
years of safe and dependable comfort, providing it is properly
installed and maintained. With regular maintenance, this unit
will operate satisfactorily year after year. Abuse, improper
use, and/or improper maintenance can shorten the life of the
appliance and create unsafe hazards.
To achieve optimum performance and minimize equipment
failure, it is recommended that periodic maintenance be
performed on this unit. The ability to properly perform
maintenance on this equipment requires certain tools and
mechanical skills.
Before you install this unit
√
The cooling load of the area to be conditioned must be
calculated and a system of the proper capacity selected. It is
recommended that the area to be conditioned be completely
insulated and vapor sealed.
√
Check the electrical supply and verify the power supply is
adequate for unit operation. Consideration should be given
to availability of electric power, service access, noise, and
shade. If there is any question concerning the power supply,
contact the local power company.
√
All units are securely packed at the time of shipment and
upon arrival should be carefully inspected for damage prior
to installing the equipment at the job site. Verify coil fins are
straight. If necessary, comb fins to remove flattened or bent
fins. Claims for damage (apparent or concealed) should be
filed immediately with the carrier.
√
Please consult your dealer for maintenance information and
availability of maintenance contracts. Read all instructions
before installing the unit.
Locating the Equipment
• Survey the job site to determine the best location for the
packaged unit. The unit should be located with consideration
of minimizing the length of the supply and return ducts.
Consideration should also be given to the accessibility of
fuel, electric power, service access, noise, and shade.
• Select a solid, level position, preferably on a concrete slab,
slightly above the grade level, and parallel to the home.
DO
NOT PLACE UNIT UNDER THE HOME.
• Overhead obstructions, poorly ventilated areas, and areas
subject to accumulation of debris should be avoided. Do not
place the unit in a confined space or recessed area where
discharge air from the unit could re-circulate back through
the condenser coil.
• Sufficient clearance for unobstructed airflow through the
louvered control access panel and outdoor coil must be
maintained in order to achieve rated performance. See
for minimum clearance requirements.
• A clearance of at least 36 inches from the blower access panel
and from the louvered control access panel is recommended
for servicing and maintenance.
Where accessibility clearances are greater than
clearances to combustibles, accessibility clearances
must take preference.
• The hot condenser air must be discharged up and away
from the home.
• If practical, place the air conditioner and its ducts in an area
where they will be shaded from the afternoon sun, when the
heat load is greatest.
Heating Load
This unit should be sized to provide the design heating load
requirement. Heating load estimates can be made using
approved methods available from Air Conditioning Contractors of
America (Manual J); American Society of Heating, Refrigerating,
and Air Conditioning Engineers; or other approved engineering
methods. For installations above 2,000 ft., the unit should have
a sea level input rating large enough that it will meet the heating
load after deration for altitude.
Minimum Required
Clearances to Combustibles
36"
36"
36"
TOP OF UNIT
TO
BE
UNOBSTR
UCTED
See Note 1
See Note 2
NOTE 1:
6” When coil is present on duct side.
NOTE 2:
1” When no coil is present on duct side.
Figure 1. Clearance Requirements
