Trane Cold Generator CG-SVX044F-EN Installation, Operation And Maintenance Manual page 28

Installation Mechanical
Figure 16. Chilled water piping
8
4
T3
Table 5. Chilled water piping components
Item Description
1 Bypass Valve
2 Isolation Valves
3 Vibration Eliminators
4 Evaporator Heat Exchanger
5 Inlet & Outlet Chilled Water Lines
6 Valves for Pressure Measurement
(c)
7 Strainer with 20 Mesh Screen
8 Evaporator Manual Air Vent Valve w/ Plug
9 Evaporator Manual Ball Valve
10 Evaporator Manual Ball Valve (Motorized On/Off Valve, optional)
(a) Must account for water head difference when calculating total unit pressure differential.
(b) Chilled water flow-proving device is required.
(c) Strainer is factory supplied and field installed.
Condenser Piping
NOTICE
Waterborne Debris!
To prevent condenser damage, pipe strainers must be
installed in the water supplies to protect components
from waterborne debris. Trane is not responsible for
equipment-only-damage caused by water born debris.
Failure to install the shipped-loose supplied Y-strainers
or screens will void the warranty on the brazed plate
evaporator and condenser.
28
9
5
T2 P2
10
5
T1 P1
UNIT
6
7 3
FS T4
Pi
B
6
3
T5
CUSTOMER PIPING
Item Description
A Isolator Unit for initial water loop cleaning
(a)
B Arrangement for Measuring Differential Pressure
(b)
FS 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
P1 Evaporator Outlet Pressure Sensor
P2 Evaporator Inlet Pressure Sensor
Condenser piping components and layout vary depending on
the water source and connection locations, however a means
of maintaining stable discharge pressure through full-, part-
load, and transient conditions is required. Saturated discharge
temperature must be maintained between 80°F and 145°F.
Trane offers an optional factory installed water regulating valve
that is controlled by unit controller. The optional water
regulating valve maintains condensing pressure and
temperature by throttling water flow leaving the condenser in
response to compressor discharge pressure. Field supplied
water regulating valves must be adjusted for proper operation
during start-up. Under full load "standard AHRI conditions" the
water temperature rise should be 10° F, producing a flow rate
in the range of 3 gpm per ton. Minimum inlet condenser water
2
1
A
2
CG-SVX044F-EN