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3.2.2 - Hydraulic circuit
The hydraulic scheme shows the main parts of the internal unit and a typical hydraulic circuit.
1.
System water return pipe
2.
Safety valve (3 bar)
3.
Manometer
4.
T1 system water return pipe temperature
probe
5.
Plate exchanger
6.
T2 system water delivery pipe temperature
probe
7.
Flow switch
8.
Expansion vessel
9.
Electric heaters collector
10.
Automatic air vent
11.
Circulation pump
12.
3-way diverter (integrated on board of the
machine on version 3W)
13.
System water outlet
14.
Water outlet for domestic water accumu-
lation
15.
Net water filter
16.
Refrigerant pipes connections
Install a sieve filter with 0,4 mm meshes on the water return pipes from the sys-
tem and from the domestic water tank.
8
10
9
11
12
13
EN - 24
A
7
6
16
5
4
2
3
19
7
5
26
25
1
10
15
17.
T3 sanitary boiler temperature probe
18.
Domestic hot water circuit return pipe
19.
Flow diverter with flow meter
20.
DHW circuit compressor
21.
Thermostatic valve
22.
Compressor T5 delivery pipe temperature
probe
23.
High temperature DHW T6 circuit water
outlet temperature probe
24.
Non-return valves
25.
High temperature DHW T6 circuit water
outlet temperature probe
26.
DHW T7 circuit evaporator outlet temper-
ature probe
A.
Internal unit
B.
External unit
C.
System (fan coils, radiators or radiant
panels/floors)
D.
Domestic water accumulation
E.
Solar thermal panels
B
10
22
23
5
24
20
21
25
14
18
15
C
E
10
17
D
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