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Ductable air-cooled scroll
chillers and heat pumps
• 30PAC/PHC version (circulation pump included)
These units include a motorised pump group made up of: centrifugal
circulation pump, closed expansion vessel, safety valve with a tare
value of 4 bar, draining valve, and automatic air bleeder valve (model
160HEE and 180HEE).
25
20
15
10
9
8
7
6
5
4
3
2
1
2
3
4
25
20
15
10
9
8
7
6
5
4
3
2
1
2
3
4
5
6
7
8 9
10
15
5
6
7
8 9
10
15
A kit with a stainless steel mesh fi lter (500 microns) is also supplied
for installation by the installer. It is also necessary to install this
fi lter in the hydraulic power supply to the unit in order to prevent
clogging of the plate exchanger.
The following graph represents the pressure drop for that fi lter:
7
6
5
4
3
2
1
0,9
0,8
0,7
0,6
0,5
0,4
20
0,3
0,2
2
3
Schematic diagram of the hydraulic circuit
PLATES
CIRCUIT
EXCHARGER
DRAINAGE
SHUT-OFF
DIFFERENTIAL
20
VALVE
PRESSURE SWITCH
4
5
6
7
8 9
10
EXPANSION
VESSEL
CIRCULATOR
PUMP
15
20
SAFETY
VALVE
MESH
FILTER
19
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