Heating system types
21
Circuit Diagram 8
Multi-boiler system with low-loss header and return valve for elevating the return temperature
in conjunction with Vitorond 200, VD2
A
Boiler with Vitotronic 100, GC1
B
Domestic hot water tank
C
Heating circuit with mixing valve
D
Low-loss header
Plugs
§
Boiler temperature sensor
aJ
A
Temperature sensor T1
sL
Boiler circuit pump
fÖ
Power supply connection,
120 VAC
fA
Burner (1st stage)
gS
A1 Return valve
lÖ
Burner (2nd stage/modulating)
aVD
Connection of external
equipment (see page 60)
aVH
Connection of external
equipment (see page 60)
5
3
5
1
3
3
8
v
1
.8
B
3
17A
A
A
3
17A
T1
C
C
9
0
4
1
4
0
1
4
6
1
4
3
5
2
A
1
2
9
T1
9
0
4
1
4
0
1
4
6
1
4
3
5
2
A
1
2
9
D
