Viessmann VITOTRONIC 100 Installation And Service Instructions Manual page 44

Heating system designs
System version 15
Several heating circuits, one low temperature heating circuit and low
temperature boiler with shunt pump
Vitocrossal 300
Vitogas 100
Vitomax 100
Vitoplex 100, type SX1, Vitoplex 200, type SX2, and Vitoplex 300, type TX3
Vitorond 100
B
A Boiler with Vitotronic 100
B DHW cylinder
C Heating circuit with mixer
D Neutralising system
44
3
D A
C
Plug
§
Boiler water temperature
sensor
aJ A
Temperature sensor T1
aJ B
Temperature sensor T2
sL
Shunt pump
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)
C
3
17B T2
17A
T1
A