Operating instructions
C D
B
3
90
41
40
143
146
5
21
143
146
5
21
or
F
E
A
G
37
Heating system designs
System version 12
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 Low temperature heating circuit
or
E Underfloor heating circuit with
mixer
F Temperature limiter
(max. limit)
G Neutralising system
Plug
§ Boiler water temperature
sensor
% Cylinder temperature
sensor (accessories)
sA Cylinder primary pump
(accessories)
fÖ Mains electrical connection,
230V~/50Hz
fA Burner stage 1
lÖ Burner stage 2/mod.
aVD/aVH External hook−up
(see page 69)
5862730GB