ClimaCool UCA Manual - Manual (Page 14)

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14
Chilled Water Temperature
Modudes are designed for a leaving water temperature
range from 40°F to 62°F. All cataloged modules can operate
safely in this range without the need of special controls or
glycol additives. Leaving water temperatures below 40°F
can result in evaporator suction temperatures below the
freezing point of water. Therefore, a glycol solution additive
is required that will protect the evaporator from freeze ups
at lower operating suction temperatures. The full range of
leaving chiller fl uid using glycol is 20°F to 62°F.
Hydronic Refrigeration
Figure 1 - Chilled Water Circuit
Note: Figure 1 depicts hydronic piping in each ClimaCool chiller module and is shown with water isolation valves.
Service Ports (3/4”)
Isolation Ball Valves
(2 or 2-1/2”)
Pete’s Ports Heat Exchanger
Leaving Chilled Water
Temperature Sensor
Refrigerant Circuit #1
Refrigerant Circuit #2
Water Temperature Requirement and Hydronic Refrigeration