Installer_manual_OEM_Vaillant_PROTO_3_GB - 06/11 - Vaillant
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10.4 Example installation of scheme D
Installation with boiler booster and pressure breaker, one or more zones, control using system with contact inputs.
230V 230V
A
B
G
F
E
D
C
S3
S2
S1
S4
230V 230V
L12
9
18
1
2
3
4
17
16
11
13
12
10
10
14
1
R4
5
7
2 3
4
6
5
8B
7
15
8A
8
7
8A
6
8B
INSTALLATION