Gulf+Western ACWC-SC - Location & Mounting; Wiring; Chiller Piping; Start-Up

INSPECTION & HANDLING
When unit is received, it should be checked for visible or concealed
damage . If damage has occurred it should be reported to the carrier
imm e diately . o.nd clo.im filed .
Models ACWC 160SC thru 215SC are factory mounted on two (2)
permanent angle beam, carbon steel skids. Ei ght (8) 2W' lifting eyes
are
provided in the skids to allow rigging. Spreader bars must be
used between
rigging lines to prevent damage to the unit. Rollers
may be used
under the skids to facilitate moving the unit a short
distance . Physical damage to the unit, after acceptance, Is not the
responsibility of the factory.
LOCATION & MOUNTING
Model ACWC Air Cooled Packaged Water Chillers are designed for
outdoor application and may be mounted on roof or at ground level.
Air flow through the condenser is vertical and the unit may be
located adjacent to outside of building or on roof without regard for
prevailing wind direction.
Since these units are air cooled, the flow of air to and from the
condenser coil must not be impeded. There must be no obstruction
above the unit that would tend to deflect discharge air downward
where it could be recirculated back to the inlet of the unit. The
required overhead air space should be a minimum of eight (8) feet.
Ductwork must not be applied to the fan outlets .
The
unit must be installed with sufficient clearance for air entrance
to the condenser coil and for servicing access. The unit should be
located
no closer than four (4) feet from any wall or other obstruction .
Clearance must be provided at either end of the unit to permit
removal of tubes from the chiller .
Unit must be set on a solid and level foundation .
On roof installations the unit should be mounted on support beams
which span load-bearing walls to prevent excessive vibration .
On ground level installations, the unit should be mounted on a
substantial base that will not settle. A one-piece concrete slab with
footings extended below the frost line is recommended. A space
should be left between the slab and the building to prevent the
transmission of sound and vibration .
Vibration mounts may be used for roof mounted units or other
locations where noise might be objectionable.
WIRING
A unit wiring diagram showing the required power supply character-
istics and all factory supplied wiring details is provided with unit.
Separate, field
supplied, disconnects must be installed in the power
supply and should be within the sight of the unit.
Separate 115
volt power source must be field supplied to provide
power for control and heater circuits .
2
CHILLER PIPING
The chiller inlet (return) water pipe should be connected to the water
connection closest to the control panel end of the unit and the outlet
(:.upply) vvdte• 1-'ifJt:: <..v""""'t"'u tv u,., wat.,r <,;urrrr.,<,;llun on the
opposite end of the cooler(s).
A
flow switch must be installed in a straight horizontal section of the
chilled water piping .
Gauges
should be installed in the piping to and from the chiller to
measure
the pressure drop and to insure the proper (GPM) flow rate
in
accordance with submittal data. A strainer should be installed in
the piping on the inlet side of the chiller and vibration eliminators
should be employed on both the inlet and outlet pipes. Air vents
should be located at all high points in the piping system. Vents
should be located to be accessible to servicing . Drain connections
should be provided at all low points to permit complete drainage of
chiller and piping system.
The chilled water piping should be insulated to reduce heat pickup
and to prevent condensation . If the system is for year-round
operation or if it will not be drained in the winter, the chilled water
piping should be protected against freezing by electric heating cable
or other suitable means.
Upon completion of chiller piping, start the system water pump and
purge air from the system. Air purging should be done from the high
points in the water circuit. Purging of the chiller barrel may be
accomplished through the vent pipe located on the top of the chiller
compartment. Failure to purge air from the water circuit will result in
inadequate waterflow and may cause the unit to cutout on low water
flow freeze protection.
START-UP
Refer to start, test, and check list included with this manual.
Check all electrical and mechanical connections for shipping
looseness and tighten all screws on electrical terminals .
Activate the 115
volt chiller and crankcase heater circuit 24 hours
prior to unit start-up .
Rotate each fan
prior to start-up . Fans should turn freely. Check belt
tension and pulley alignment. After two (2) weeks of operation,
readjust
belt tension to accommodate for belt stretching.
Check all control settings as specified in Table 1.
Check the compressor oil level through the crankcase sight glass.
The oil level should be to the top of the glass. If the level is low, add
oil in
accordance with the directions in the maintenance instruction
(page 3).
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