Operating instructions
A
D
3
90
41
40
143
146
143
146
C C
B
52 A1
156
A
D
3
90
41
40
143
146
143
146
52 A1
156
39
Heating system designs
System version 13
Several heating circuits and one low temperature heating circuit
Vitocrossal 300
A Boiler with Vitotronic 100
B DHW cylinder
C Heating circuit with mixer
D Neutralising system
Plug
§ Boiler water temperature
sensor
fÖ Mains electrical connection,
230V~/50Hz
fA Burner stage 1
gSA1 Motorised butterfly valve
lÖ Burner stage 2/mod.
aVD/aVH External hook−up
(see page 69)
aBH Power supply, accessories
5862730GB