Viessmann VITOTRONIC 100 GC1 Installation And Service Instructions Manual page 31

Circuit Diagram 13
Multi-boiler system with return valve, several heating circuits and one mixing valve
heating circuit
in conjunction with Vitocrossal 300 and Vitorond 200
B
A Boiler with Vitotronic 100, GC1
B Domestic hot water tank
C Heating circuit with mixing valve
D Neutralizing unit
3
D A
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 3-port mixing valve
Heating system types
C
3
17A
T1
A
lÖ
Burner (2nd stage/modulating)
aVD
Connection of external
equipment (see page 60)
aVH
Connection of external
equipment (see page 60)
C
31