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

Table Of Contents
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8.2 CHILLED WATER CIRCUITS CONNECTION - TWO SOURCES DESIGN
It will be necessary to install water inlet and outlet pipes for Two Sources units as it was 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
50 3/4” 20
Female
5
211 1” 25 5.5
321
1-1/4” 32
18
70 16
110 22
461 - 512
1-1/2” 40
22.5
662 – 852 27.5
932 34,8
160 28.5
R Series
231 1” 25
Female
15.5
40 1-1/4” 32 22.5
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.
8.2.1 SETTING UP THE CHILLED WATER CIRCUITS - TWO SOURCES DESIGN
The positions of the water inlet and outlet connections are indicated in the gure below. The connections can also be iden-
tied by the adhesive labels applied on the pipes of the unit near the connections.
3-way valve
A Armaex insulation
B Mechanical lter
C Thermometer
D Shut-o valve
E Pressure gauge
F Balancing valve
G Discharge
H Supports
2-way valve
Water connections Water circuit supply line
To ensure that circuit pipes are installed correctly, we recommend you follow the instructions below:
Use piping suited to the circuit pressure (copper, steel or plastic).
Secure pipes with suitable brackets.
Insulate both pipes with Armaex type insulation.
Install shut-o valves to facilitate maintenance.
Install a Thermometer and Pressure gauge on the inlet and outlet.
Install a discharge outlet at the lowest part of the circuit.
Install a 50 μ mechanical lter on the supply line.
Install a balance valve on the return line.
Use water and glycol where necessary.
A
F
H
C
B
G
D
E