5
INSTALLATION
Step 1 — Unpack and Inspect Units
Units are
packaged for shipment to avoid damage during normal transit
and handling. It is the receiving party’s responsibility to inspect
the equipment upon arrival. Any obvious damage to the carton
and/or its contents should be reported on the bill of lading and a
claim should be filed with the transportation company and the
factory. Unit should always be stored in a dry place, and in the
proper orientation as marked on the carton.
CAUTION
To avoid equipment damage, do not lift unit by the drain
pipe or refrigerant piping. Unit should be lifted using the
mounting brackets.
After determining the condition of the carton exterior,
carefully remove each unit from the carton and inspect for
hidden damage. Check to make sure that items such as
thermostats, controller etc. are accounted for, whether
packaged separately or shipped at a later date. Any hidden
damage should be recorded, a claim should be filed with the
transportation company, and the factory should be notified. In
the event a claim for shipping damage is filed, the unit,
shipping carton, and all packing must be retained for physical
inspection by the transportation company. All units should be
stored in the factory shipping carton with internal packaging in
place until installation.
PROTECTING UNITS FROM DAMAGE Do not apply
force or pressure to the coil, piping, or drain stub-outs during
handling. All units should be handled by the chassis or as close
as possible to the unit mounting point locations.
The unit must always be properly supported. Temporary
supports used during installation or service must be adequate to
hold the unit securely. To maintain warranty, protect units
against hostile environments (such as rain, snow or extreme
temperature), theft, vandalism, and debris on jobsite.
Equipment covered in this manual is not suitable for outdoor
installations. Do not allow foreign material to fall into drain
pan. Prevent dust and debris from being deposited on motor,
fan wheels and coils. Failure to do so may have serious adverse
effects on unit operation and in the case of motor and blower
assembly, may result in immediate or premature failure. Failure
of any unit caused by deposits of foreign material on the motor
or blower wheels will not be covered by the manufacturer’s
warranty. Some units and/or job conditions may require some
form of temporary covering during construction.
PREPARING JOBSITE FOR UNIT INSTALLATION To
save time and to reduce the possibility of costly errors, set up a
complete sample installation in a typical room at jobsite.
Check all critical dimensions such as pipe, wire, and duct
connections requirements. Refer to job drawings and product
dimension drawings as required. Instruct all trades in their
parts of the installation. Units must be installed in compliance
with all applicable local code requirements.
IDENTIFYING AND PREPARING UNITS Be sure power
requirements match available power source. Refer to unit
nameplate and wiring diagram. In addition:
• Check all tags on unit to determine if shipping screws are
to be removed. Remove screws as directed.
• Rotate the fan wheel by hand to ensure that the fan is
unrestricted and can rotate freely. Check for shipping
damage and fan obstructions. Adjust blower motor as
required.
Step 2 — Position the Unit
DANGER
Units must not be installed where they may be exposed to
potentially explosive or flammable atmosphere. If this
instruction is not followed exactly, a fire or explosion may
result, causing property damage, injury, or loss of life.
Install the unit in a location that meets the following
requirements:
• Allow adequate space for installation, service clearance,
piping and electrical connections, and necessary
ductwork. For specific unit dimensions, refer to Table 2,
Fig. 2, and Fig. 3. Allow clearance according to local and
national codes.
• Unit can be installed standing vertically on the floor or
on a field-provided stand. If a stand is used, be sure it can
support the weight of the unit. Unit can also be installed
horizontally, either resting on the floor or suspended
from the ceiling. If suspended, confirm that the ceiling is
able to support the weight of the unit. See Table 2 for
nominal weight.
• If the unit is to be installed over a finished ceiling and/or
living area, building codes may require a field-supplied
secondary condensate drain pan to be installed under the
entire unit. Consult local codes inspector for additional
information.
Select the unit position with the following points in mind:
• The unit should be installed on a structure that is suitable
to support the total weight of the unit, refrigerant piping
and condensate.
• Proper access should be provided for maintenance for
refrigerant piping, EEV (electronic expansion valve),
electrical box, and condensate pump. A 2-ft. clearance is
recommended all around the unit.
• The unit should not be positioned close to a wall or
similar obstruction, or in a position where the discharge
air could blow directly on the thermostat. See Fig. 3.
Fig. 3 — Clearances
AIRFLOW
HORIZONTAL INSTALLATION
t
39
3
/
8
t
39
3
/
8
t
39
3
/
8
t
7
7
/
8
t
7
7
/
8
t
7
7
/
8
VERTICAL INSTALLATION
NOTE: All dimensions shown in inches.
• The unit should not be positioned directly above any
obstruction.
• The unit must be installed square and level.
• The condensate drain should have sufficient downward
slope (1 in. per 100 in.) in any horizontal run between
unit and drain.
