21
2.7.12 Factory Charge for Water/Glycol Cooled System
Evaporator Model
R-410A
Variable Speed
Circuit
Fixed Speed Circuit
GUWX-022XX
GUGX-022XX
10
10
N/A
GUWX-036XX
GUGX-036XX
16
16
N/A
GUWX-045XX
GUGX-045XX
18
18
N/A
GUWX-070XX
GUGX-070XX
30
16.5
13.5
GUWX-091XX
GUGX-091XX
36
19.8
16.2
GUWX-125XX
GUGX-125XX
42
23.1
18.9
2.7.13 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 sys
-
tem. 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 pro
-
vided) is recommended at the field connection which will permit easy disconnection from the unit for
cleaning.
A trap
should be built into the drain line to prevent air from backing up into the unit. Drain lines should
be pitched downward not less than 1/4” (6.35 mm) for each ten (10) feet (3.1 m) of horizontal run. Do
not reduce the size of the drain line.
Some applications have no convenient means of allowing a gravity drain. When required, an optional
condensate pump can be used. Condensate pumps are either factory mounted or shipped loose. Fac-
tory mounted condensate pumps do not require a separate power source.
Condensate pumps shipped loose (or field provided) typically require a dedicated 110 volt power
source. Field pipe connections must be made to the pump discharge connection. A check valve
must
be installed to prevent short cycling. See condensate pump electrical requirements in Section 3.9.
Do not expose drain line to freezing temperatures. Drain line may contain boiling water therefore use
copper or other suitable material. Drain line must comply with local building codes. It is recommended
to install under-floor leak detection equipment whenever possible.
Summary of Contents for gForce Ultra
Page 1: ......
Page 58: ...58 8 CONTROLS Refer to dap4 IOM for controls and control logic...
Page 63: ...63...
Page 64: ...gFUltra_IOM 09 2020...
