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2.7.7 Field Piping, Remote Condenser Below Evaporator
2.7.8 Water/Glycol Cooled Unit Piping
Water/Glycol-cooled units are factory-charged and tested. Field-supplied and eld-installed piping is
required from the unit to building water or tower water sources or the uid cooler (i.e., dry cooler) and
pump package. Pipe size will depend on length of run and the maximum water ow required.
The required eld installed uid cooler pipe sizes may or may not be the same as the connection sizes
on the uid cooler (refer to the Fluid Cooler User Manual for connection sizing). This will depend on the
length of pipe and the calculated pressure drop of peripheral components.
Shuto valves (eld provided) should be installed within a few feet of the inlet and outlet connections
of the evaporator to allow the unit to be isolated for service. Drain/ll valves (eld provided) should be
located at the lowest point on the connected piping.
Water/glycol cooled units are shipped with plate/n heat exchangers as standard equipment. A strainer
(Data Aire provided) is shipped loose and is to be eld installed in the supply line with shut-o valves
(eld 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 pres-
sure 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.
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