SYSTEMP – Installation Operation Manual (IOM SYSTEMP rev.N)

Table Of Contents
40
8 WATER CIRCUIT CONNECTIONS
8.1 CHILLED WATER CIRCUITS CONNECTION
WARNING!
If the chilled water unit is used with Free Cooling plenum, it is essential to use glycol if out-
door temperatures below 5°C are expected!
It will be necessary to install water inlet and outlet pipes for machines with chilled water coils. The inlet and outlet ttings
are identied in the order conrmation or in the following tables for standard models (identied by the code number sequence).
Water connections
Standard models
Fitting diameter Ø Threading Water circuit volume
Inches DN ISO 7/1 dm
3
P Series
10 3/4” 20
Female
3.5
20 1” 25 7
30
1-1/4” 32
10
50 16
60 19
70
1-1/2” 40
28
80 22
110 38.5
160
2” 50
56
220 76.5
G Series
70 1-1/2” 40
Female
26.5
150
2” 50
59.5
150 XH 63,9
230
2-1/2” 65
79,5
230 XH 90,8
300 118
R Series
20 1” 25
Female
11.5
40 1-1/4” 32 17.5
The maximum pressure of the water supply to the coils is 16 bar (1.6 MPa). The maximum pressure dierence between
the water inlet pipe to the valve and the outlet pipe is 1.8 bar (180 kPa), as at pressure dierences greater than this value the return
spring would not be able to shut o the water ow. In the event of greater pressure dierences, it will be necessary to install pressure
reducing valves upstream of the valve.