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GENERAL INFORMATION
Packaged Air Conditioner units are ready for easy and
immediate installation on rooftops or ground level slabs.
Units are shipped for horizontal duct connections and
can be easily converted for downfl ow applications. This
air conditioner is designed only for outdoor installations.
This unit has been designed and tested for capacity and
effi ciency in accordance with A.R.I. Standards. This
unit will provide many years of safe and dependable
comfort, providing it is properly installed and maintained.
With regular maintenance, this unit will operate reliably
year after year. Abuse, improper use, and/or improper
maintenance can shorten the life of the appliance and
create unsafe hazards.
Pre - Installation Check
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. 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 fi ns are straight. If necessary, comb fi ns
to remove fl attened or bent fi ns. Claims for damage
(apparent or concealed) should be fi led immediately
with the carrier.
Please consult your dealer for maintenance information
and availability of maintenance contracts. Please read
all instructions before installing the unit.
36" For Coil Only
36"
36"
Figure 2. Clearance Requirements
6
0"
36"
Minimum Required
Clearances to Obstructions
Locating the Air Conditioner
• Survey the job site to determine the best location for
mounting the outdoor unit.
• Choose an appropriate location that minimizes the
length of the supply and return air ducts.
• Avoid overhead obstructions, poorly ventilated areas,
and areas subject to accumulation of debris.
• Suffi cient clearance for unobstructed airfl ow through the
outdoor coil must be maintained in order to achieve rated
performance. See Figure 2 for minimum clearances
to obstructions.
Field Connections for Electrical Power Supply
• All wiring must comply with current provisions of the
National Electrical Code (ANSI/NFPA 70) and with
applicable local codes having jurisdiction.
• The minimum size of electrical conductors and circuit
protection must be in compliance with information listed
on the outdoor unit data label.
• Electrical power supplied to the unit must be adequate
for proper operation of the equipment. The system
must be wired and provided with circuit protection in
accordance with local building codes.
Air Ducts
This unit is designed only for use with a supply and return
duct. Air ducts should be installed in accordance with
the standards of the National Fire Protection Association
Standard for Installation of Air Conditioning Systems
(NFPA 90A), Standard for Installation of Residence Type
Warm Air Heating and Air Conditioning Systems (NFPA
90B), and all applicable local codes. NFPA publications
are avaialable by writing to: National Fire Protection
Association, Batterymarch Park, Quincy, ME 02269 or
visit www.NFPA.org on the web.
• Design the duct work according to methods described
by the Air Conditioning Contractors of America (ACCA).
• The ducts must be properly sized and not exceed .2"
W.C. pressure drop at 400 scfm per nominal ton of
cooling capacity.
• Duct work should be attached directly to the unit fl anges
for horizontal applications.
• If roof curb is installed, the ducts must be attached to
the curb hangers, not the unit.
Unconditioned Spaces
All duct work passing through unconditioned space must
be properly insulated to minimize duct losses and prevent
condensation. Use insulation with an outer vapor barrier.
Refer to local codes for insulation material requirements.
Acoustical Duct Work
Certain installations may require the use of acoustical
lining inside the supply duct work.
• Acoustical insulation must be in accordance with the
current revision of the Sheet Metal and Air Conditioning
Contractors National Association (SMACNA)
application standard for duct liners.
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