Trane Cold Generator CGWR Series Installation, Operation And Maintenance Manual page 21

disc and seat type water regulating valves caused by
excessive pressure drops through the valve.
Under full load AHRI standard conditions, and with
approximately 3 gpm/ton cooling water flow through the
condenser, the temperature rise across the condenser will
be approximately 10°F . In all cases, the minimum inlet
condenser water temperature is 65°F .
Figure 3. Chilled water piping schematic
8
4
UNIT
T3
Table 8. Reference numbers
Item Description
1 Bypass Valve
2 Isolation Valves
3 Vibration Eliminators
4 Evaporator Heat Exchangers
5 Inlet and Outlet Chilled Water Lines
6 Valves for Pressure Measurement
(a)
7 Strainer with 20 mesh screen
8 Evaporator Manual Air Vent Valve w/Plug
A Isolator Unit for initial water loop cleaning
(b)
B Arrangement for Measuring Differential Pressure
(c)
FT Water Flow Switch
Pi Pressure Gauge
T1 Evaporator outlet temperature sensor
T2 Evaporator inlet temperature sensor
T3 Evaporator core temperature sensor
T4 Chiller inlet temperature gauge
T5 Chiller outlet temperature gauge
(a) Strainer with 20 mesh screen is required.
(b) Must account for water head difference when calculating total unit pres-
sure differential.
CG-SVX038A-EN
7
5
T2
5
T1
6
3
FT T4
Pi
B
6
3
T5
CUSTOMER PIPING
(c) Chilled water flow-proving device is required.
Unit Piping
2
1
A
2
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