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NOTE: One of the most common problems in a water/glycol system is the pres-
ence of air in the condenser water loop. Air vents must be installed in various
locations the piping system to purge the air.
The water/glycol system may include a centrifugal pump (or pumps, for redundancy) available from
Data Aire as an option, along with eld provided union(s), shuto valves, check valve(s) and a ow
switch (Data Aire option). Pumps must be primed before operating per the pump manufacturer’s guide-
lines.
2.7.9 Field Piping, Water/Glycol System
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