Installation, Operation and Maintenance Manual
VariCool EZ-Fit
24
Subject to change without notice.
Water Flow Switch Installation
EZ-Fit units utilize Head Pressure Control valves which
modulate the water flow to maintain adequate refrigerant
head pressure If a water flow switch is provided by the
field, do not install the switch in the BRANCH pipe feeding
condenser water to the unit A reduction of water flow from
the unit head pressure control valve operation may cause
nuisance trips Water flow switch trips will cause “loss of water
flow” alarms, which in turn will prevent the compressors from
starting or will cause the active compressors to shut down
Install the field provided water flow switch in the MAIN water
pipe supplying condenser water to the building, close to the
unit’s supply branch, to accurately reflect flow conditions in
the main line (Figure 9)
Figure 9
CWR
CWS
CWR
CWS
Summary of Contents for VariCool EZ-Fit Series
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