Trane Cold Generator CICD Series 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
P2
T2
10
5
T1 P1
UNIT
6
7 3
T4
FS
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
2
1
A
2
CG-SVX044B-EN