10-2014 gForce User Manual ● 19
Drain/fill valves (field provided) should be located at the lowest point on the connected
piping.
Water/glycol cooled units are shipped with plate/fin heat exchangers as standard
equipment. A strainer (Data Aire provided) is shipped loose and is to be field installed
in the supply line with shut-off valves (field provided) before and after the strainer. The
strainers and water/glycol piping must be cleaned on a periodic basis. If the unit is
shipped with optional shell and tube condensers, strainers are not required and not
shipped with the unit.
All water pipes have a cap installed on the end of the pipe prior to shipment from the
factory for pressure testing the system. These caps need to be removed before
installing the piping to the units. Use a tube cutter for smaller pipes and a reciprocating
saw with a metal cutting blade for larger pipe sizes or if there is a clearance problem.
All connections need to be cleaned before connections are brazed together.
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.
The water/glycol system may include a centrifugal pump (or pumps, for redundancy)
available from Data Aire as an option, along with field provided union(s), shutoff valves,
check valve(s) and a flow switch (Data Aire option). Pumps must be primed before
operating per the pump manufacturer’s guidelines.
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