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5.6.4
Connection diagram: controlling a boiler in 0-10 V
1 Boiler flow
1a Heating flow
2a Heating return
3 4 bar (0.4 MPa) safety valve
7 Automatic air vent
27 Non-return valve
30e Drain valve
34 Modulating boiler pump
35 Low-loss header (optional)
119 Boiler return
Fig.33
Boiler in 0-10 V
MW
-3
0
0
0
0
2
1
-0
4
1a
35
2a
119
30e
7
AVS75
1
3
27
34
5 Before installation
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