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.
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 and
controllers 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. If 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.
• The condensate drain should have sufficient downward
slope (1 inch per 100 inches) in any horizontal run
between unit and drain
Step 2 — Position the Unit
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.
• The unit should not be positioned directly above any
obstruction.
• The unit must be installed square and level.
NOTE
:
All dimensions shown in inches.
Fig. 3 —Clearances
CAUTION
To avoid equipment damage, do not lift unit by the drain
pipe or refrigerant piping. Unit should be lifted using the
mounting brackets.
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.
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
