EN
21
2 .8
Heat pump hydraulic diagram
a.
Boiler
b.
Hot water utilities
c.
High temperature (radiator) utilities
d.
System utilities
1.
24 litre expansion vessel
2.
7 bar safety valve
3.
Thermostatic mixing valve *
4.
P3 high temperature circulation pump *
5.
P2 system circulation pump
6.
Hydraulic separator
7.
Y filter
8.
Plate heat exchanger
9.
Automatic relief valve
10.
3 bar safety valve
11.
Collector with resistor *
12.
P1 head pump circulation pump
13.
Three-way valve
14.
Boiler relief valve
15.
Solar charge tap*
16.
4 bar solar safety valve *
17.
Pressure gauge *
18.
PSO solar circuit pump *
19.
Solar serpentine
20.
ACS stainless steel serpentine
21.
External unit
22.
Solar panel
* Optional
2
1
3
4
5
6
7
8
9
10
21
22
11
13
12
14
15
16
17
18
T3
T4
T1
S2
S1
20
19
1
A
B
C
D
Summary of Contents for PDC FLOOR 12T
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