Viessmann Vitotronic 100 GC1 Installation And Service Instructions Manual page 18

Heating system designs
System version 5
Heating circuit and one low temperature heating circuit
Vitocrossal 300
1
28
5
21
C
A Boiler with Vitotronic 100, GC1
B Vitotronic 300-K, MW1S
C DHW tank
D Mixing valve circuit
E Neutralising system
Plug
!
Outdoor temperature sensor
?
Supply temperature sensor
common heating supply
?M2/M3Supply temperature sensor
mixing valve circuit 2 or 3
§
Boiler temperature sensor
%
DHW tank temperature sensor
lÖ
Burner
(burner stage 2/mod.)
18
2
20 M2
52
2
B
20 M3
52
3
E A
sÖM2/M3Heating circuit pump mixing
valve circuit 2 or 3
sA
DHW pump
sK
DHW recirculation pump
fÖ
Power supply, 120 VAC
60 Hz
D
3
E A
fA
Burner (burner stage 1)
gSA1
Motorized isolation valve
gSM2/M3Mixing valve actuator
circuit 2 or 3
aVD/aVH External connections
(see page 39)
D