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Note: One of the most common problems in a water/glycol system is the presence
of air in the condenser water loop. Air vents must be installed in various locations the
piping system to purge the air.
Water/glycol system piping may include a centrifugal pump (or pumps for redundancy). Pumps must
be primed before operating per the pump manufacturer’s guidelines.
2.7.11 Field Piping, Water/Glycol System