036-21540-001-A-0503
Unitary Products Group
5
PRE-INSTALLATION INSPECTION
OF EQUIPMENT
All units are factory tested to ensure safe operation and
quality assembly. Units are packaged and sealed on
shipping skids and shipped in first class condition. Torn
and broken packaging, scratched or dented panels
should be reported to carrier immediately. Internal
inspection of all units should be performed prior to
installation. Remove all access doors and check for
visual defects that can occur during transport. Any
problems found internally should be reported to carrier
and manufacturer immediately. Refrigerant circuit
should be checked to ensure no leaks have occurred
during shipment. Install a gauge set to the high and low
pressure ports to confirm pressure has been main-
tained and no leaks have occurred during shipment.
Repair any damage prior to installation to ensure safe
operation.
NOTE:
Record any unit damage on the Bill of Lading and
report to carrier and factory immediately. Shipping
and handling damages are not warranty items.
RIGGING
To ensure safe installation of the unit when ceiling
mount application is specified, estimate the approxi-
mate center of gravity of the unit. The configuration of
internal components for each unit is different and
weight is unevenly distributed.
INSTALLATION
Location - To ensure unit operates at maximum effi-
ciencies, choose a dry indoor area where the tempera-
ture is controlled between 50
°
F and 115
°
F.
Consideration of surrounding areas should be taken
when choosing a location to install the unit. Common
vibration and sound levels associated with commercial
equipment may be objectionable to people or equip-
ment.
Refer to typical installation diagram (Figure 1).
Install thermostats, air supplies and returns so that
each unit will operate only on individual unit control. To
assure fast drainage of condensate run-off, unit can be
slightly pitched in the same direction as drain pan out-
let.
UNIT MOUNTING
The 3 through 15 ton models are shipped as a fully
assembled integral package. These units may be field
split to allow for passage through doors, elevators, hall-
ways, etc. The 20 and 25 ton models are shipped in
two pieces - a separate condensing unit and evapora-
tor module - which are intended for assembly into a
freestanding vertical package on site.
Flanges for all duct connections are shipped in the con-
densing section of the unit for field installation. Duct
flanges for evaporator return are incorporated into the
filter rack.
Prior to mounting unit, check individual unit
weights (pages 7-11) and verify lifting capacity of
lifting equipment exceeds weight of units by safe
margins. Failure to do so may result in unit dam-
age, personal injury or even death
Determine the actual center of gravity of the unit
by performing a test lift. Lifting an unbalanced unit
can cause personal injury or even death.
Lock all electrical power supply switches in the off
position before installing the unit. Failure to discon-
nect power supply may result in electrical shock or
even death.
Failure to allow adequate space between units may
result in poor unit performance and possible unit
failure.
