7
INSTALLATION
Unpack and Inspect the Units —
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. The 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 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 the warranty, make sure the
units are protected against hostile environments (such as rain,
snow, or extreme temperature), theft, vandalism, and debris on
the jobsite. Equipment covered in this manual is not suitable
for outdoor installations. Do not allow foreign material to fall
into the 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 case of
motor and blower assembly, this 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 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 the
jobsite. Check all critical dimensions such as pipe, wire, and
duct connection 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 the available power source. Refer to
unit nameplate and wiring diagram. In addition:
• Check all tags on the 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 the blower motor as
required.
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 1 and Figs. 2 and 3. Allow clearance
according to local and national codes.
• Confirm that the ceiling is able to support the weight
of the unit. See Table 1 for nominal weight.
• There should be enough room within the false
ceiling for installation and maintenance. See Fig. 4.
• The false ceiling should be horizontal and leveled.
• Install the unit in a location within the room that
allows uniform air flow in all directions. Mounting
height (8-1/4 ~ 11-1/2 ft.).
Fig. 4 —Space Required for Installation
NOTE:
Dimensions are in inches.
NOTE:
The unit should not be mounted at a height greater
than what is stated in the requirements or it will affect the
effectiveness of the unit.
Select the unit position with the following points in mind:
• The unit should be installed in a position 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 be at least 4 inches from a wall or similar
obstruction. See Fig. 5.
CAUTION
To avoid equipment damage, do not lift unit by the drain
pipe or refrigerant piping. The 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.
SIZE
LETTER
5-12
15-24
A
46-1/2
53-1/8
B
54-3/8
61
C
6
7-1/2
D
126
157-1/2
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A
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Floor
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