Trane AquaStream2 CGAN 200 Installation Operation & Maintenance page 17

Before making any connections,
make sure the labeling for entering
and leaving water corresponds to
the submittals.
CGAN/CXAN units are available in
3 versions:
Without hydraulic module (with or
without contactors)
With hydraulic module (single or
dual pump)
With hydraulic module and buffer
tank.
Typical water circuits are given in
figures 3 to 5
Figure 3 - Unit without hydraulic
module - typical water circuit
14
1
1
Figure 4 - Unit with hydraulic
module - typical water circuit
5
14
6
1
1
3
7
2
12 2
13
1
10
11
CG-SVX01C-E4
Installation
Figure 5 - Unit with hydraulic
module and buffer tank - typical
water circuit
1
2
Legend for figures 3 to 5
1. Pressure port for water gauge
2. Shut off ball valve
3. Water strainer
4. Evaporator
5. Expansion tank
6. Relief valve
9
7. Pump (single or dual)
4
8. Removable water gauge
13
9. Flow control
10. Filling and drain valve
12
11. Balancing valve
12. Freeze protection
13. Leaving water temperature sensor
14. Return water temperature sensor
15. Buffer tank
Warning: Units with hydraulic
module and buffer tank content all
safety and operation devices and
only require the supply and return
8
piping to be connected using
1
expansion compensators.
Units without hydraulic module have
9
to be connected according to figure 6.
4
Figure 6 - Unit without hydraulic
module and buffer tank - typical
water circuit
5
8 14 4 4 4
6
1
3
1
7
9
12 2
4
13 3 3
11
1
10
15
Figure 7 - Unit with hydraulic
module and buffer tank - typical
water circuit
1 Pressure gauges: show entering
and leaving water pressure
(2 pressure ports are available
inside of the unit - see item 1 in
figure 5)
2 Balancing valve: adjusts water flow.
3 Air purge allows to remove the air
from the water circuit during fill up.
4 Stop valves: isolate chillers and
water circuiting pump during
maintenance operations.
5 Thermometers: indicate chilled
water entering and leaving
temperatures.
6 Expansion compensators: avoid
mechanical stress between chiller
and piping installation.
7 Stop valve located on the outlet
connection: used to measure the
water pressure inlet or outlet of
evaporator.
8 Strainer: avoid to get heat
exchangers dirty. All installation
must be equipped with efficient
strainer in order that only clean
water enters into exchanger. If
there is no strainer, reserve will be
formulated by the Trane technician
at the start-up of the unit.
The strainer used must be able to
stop all particles with a diameter
greater than 0.8 mm.
9 Draining: used as the draining the
plate heat exchanger.
To protect the environment, it is
compulsory to recover and process
glycol brines.
17