14
FREE COOLING
During normal chiller functioning, the water consumed is treated in the brazed plate heat exchanger. When
the external air temperature drops to such a level as to allow water pre-cooling, the control activates a
recirculation pump which sends the water to a finned pipe coil, mounted in front of the condenser.
For the correct power supply of the thermostatic valve it is necessary to maintain the condensation pressure
sufficiently high. For this reason, in the event of combined functioning of free cooling and mechanical cooling
with the compressors, the speed of the fans is reduced (regulation
of the standard speed of all ARA models
with free cooling).
CONDENSATOR
COIL
FREE COOLING
COIL
FANS
AIR FLOW
Positioning of the Free Cooling Coil
.
Since water passes through the free cooling coils, chillers must be loaded with antifreeze, or
guarantee conditions may be effected.
Summary of Contents for Aquaflair 00182
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