Viessmann VITOTRONIC 100 Installation And Service Instructions Manual page 39

System version 13
Several heating circuits and one low temperature heating circuit
Vitocrossal 300
B
A Boiler with Vitotronic 100
B DHW cylinder
C Heating circuit with mixer
D Neutralising system
3
A
D
Heating system designs
D
Plug
§
Boiler water temperature
sensor
fÖ
Mains electrical connection,
230V~/50 Hz
fA
Burner stage 1
gS A1
Motorised butterfly valve
lÖ
Burner stage 2/mod.
aVD/aVH External hook−up
(see page 69)
aBH
Power supply, accessories
C C
3
A
39