AIRTAK C-25 through C-8000 Petunjuk Pemasangan, Pengoperasian, dan Pemeliharaan - Halaman 4

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D. FOUNDATION
All chillers are completely free-standing units. Any reasonably level floor that has sufficient strength will
serve as a foundation.
E. PIPING
When piping the main fluid lines to the chiller, the use of flexible connections are recommended to avoid
piping stress and vibration.
All water-cooled chillers are factory piped for cooling tower water. All water-cooled chillers are supplied
with a factory mounted automatic water regulating valve which is designed to maintain the proper
working refrigerant head pressure under all chiller load conditions. No adjustment will be necessary.
(Full water pressure and flow should be supplied to the water line inlet). Refer to Section L for water
cooled water requirements.
F. ELECTRICAL
Chiller nameplate must be checked to verify voltage, phase and cycle. Three phase hermetic
refrigeration compressors are designed to operate in either direction of rotation. To change fan rotation,
switch any two power leads in the terminal box located at the rear of the chiller.
FOR MODELS C-750 AND LARGER, FAN ROTATION MUST BE CHECKED TO ASSURE PROPER
AIR FLOW. AIR MUST ENTER IN THROUGH THE FINNED CONDENSER COIL AND EXIT OVER
THE fAN MOTOR.
The chiller is completely wired at the factory. A terminal box or plug at the rear of the chiller is provided
for the main power connection. WATER PUMP(S) MUST BE CHECKED FOR PROPER ROTATION.
Power connections can be made through the pre-drilled hole on the bottom of the terminal box. Connect
the power leads to the terminal block which is conveniently located within the box. Always be sure
adequate power is available to maintain efficient operation of your chiller.
Models C-100 and larger, are equipped with crankcase heaters as standard. The crankcase heaters are
pre-wired at the factory to be energized at all times. (See Start-Up). Your chiller is equipped with a
pumpdown system. The chiller may begin to run immediately after being energized for a short period of
time which is normal.
A properly sized fused main disconnect switch (supplied by the installer) must be located near the chiller.
Check the wiring diagram supplied with the chiller for the recommended fuse size. The use of fusetron
time-delay fuses will permit smaller fuse sizes and, in some instances, a smaller fused disconnect
switch may be used.
The chiller wiring must be independent of the chilled water heat load so as not to cycle along with the
machinery.
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