Installation
17
CG-SVX06D-E4
Minimal installation water
content
The water volume is an important
parameter because it allows a stable
chilled water temperature and avoids
short cycle operation of the
compressors.
Parameters which influence the
water temperature stability
• Water loop volume
• Load fluctuation
• Number of capacity steps
• Compressors rotation
• Dead band
• Minimum time between 2 starts
of a compressor
The following table gives the
minimal installation water content
recommended according to all these
parameters for both comfort and
process cooling application.
Water treatment
Untreated or insufficiently treated
water, if used in this unit, may cause
scale, slime or algae to accumulate
or cause erosion and corrosion. As
Trane does not know the
components used in the hydraulic
network and the quality of the water
used, we recommend the services of
a qualified water treatment specialist.
The following materials are used in
Trane chillers heat exchangers:
• Stainless steel plates AISI 316,
1.4401 with copper brazing
• Water piping: steel
• Water connections: brass
Trane will not accept any liability in
regards of damage due to the use of
untreated or improperly treated
water or from the use of saline or
brackish water. If water treatment is
required, contact your local Trane
sales office.
Table 10 - Minimal water content
Notes
(1) Minimum water loop volume in order to obtain m/- 1°C chilled water temperature fluctuation vs. Chilled
water set-point
(2) Minimum water loop volume in order to obtain m/- 1.5°C chilled water temperature fluctuation vs.
Chilled water set-point
(3) Minimum water loop volume in order to obtain m/- 2°C chilled water temperature fluctuation vs. Chilled
water set-point
This table is estimated with
-
Condenser : Water 30°/35°C
-
Evaporator : Water 12°/7°C
Confort Application
Process cooling Application
2°C Dead
band (1)
3°C Dead
band (2)
4°C Dead
band (3)
2°C Dead
band (1)
3°C Dead
band (2)
4°C Dead
band (3)
CGWN - CCUN 205
660 l
440 l
330 l
1160 l
730 l
530 l
CGWN - CCUN 206
670 l
450 l
340 l
1160 l
740 l
540 l
CGWN - CCUN 207
650 l
440 l
330 l
1100 l
710 l
520 l
CGWN - CCUN 208
880 l
580 l
440 l
1520 l
960 l
710 l
CGWN - CCUN 209
1060 l
700 l
530 l
1860 l
1170 l
860 l
CGWN - CCUN 210
1080 l
720 l
540 l
1870 l
1190 l
870 l
CGWN - CCUN 211
1260 l
840 l
630 l
2220 l
1400 l
1020 l
CGWN - CCUN 212
1260 l
840 l
630 l
2170 l
1380 l
1010 l
CGWN - CCUN 213
1050 l
700 l
530 l
1760 l
1130 l
830 l
CGWN - CCUN 214
1270 l
850 l
640 l
2150 l
1370 l
1010 l
CGWN - CCUN 215
1240 l
820 l
620 l
2060 l
1330 l
980 l
