10-2014 gForce User Manual ● 21
2.7.8 Connection Sizes, Water/Glycol Cooled Units
* D=Downflow U=Upflow
2.7.9 Connection Sizes, Fluid Coolers
The information regarding fluid cooler (or often referred to as a “dry cooler”)
connection sizes can be found in the individual Fluid Cooler User Manuals which should
be referred to for more complete details.
Models GHFC-200 and larger are double-wide units. Although the header connection
for each section is 2-5/8” (67 mm), each unit comes with a factory provided header
manifold kit with 3-1/8” (79 mm) field connections.
2.7.10 Auxiliary Chilled Water/Energy Saver Coil Piping
Units with Auxiliary Chilled Water cooling coil require a separate source of chilled water.
These chilled water connection sizes will be equal to the condenser water connection
sizes shown in the Fluid Cooler User Manual. Units with an Energy Saver cooling coil
have shared piping with the condenser supply and return therefore do not require a
separate water source.
All chilled water pipes have a cap installed on the end of the pipe for factory pressure
testing of the system. These caps need to be removed before installing the water
piping to the unit. Use a tube cutter for smaller pipes and reciprocating saw with a
metal cutting blade for larger pipes or if there is a clearance problem. All connections
need to be cleaned before connections are brazed together.
2.8 Condensate Drain Piping
Every indoor unit has a 3/4” (19 mm) copper stub provided for condensate removal. A
union
(field provided) is recommended at the field connection which will permit easy
disconnection from the unit for cleaning.
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