Viessmann VITOTRONIC 100 GC1B Service Manual Page 15

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Heating system types
15
Circuit Diagram 5
Multi-boiler system with shunt pump for elevating the return temperature for each boiler
in conjunction with Vitorond 200, VD2
A Boiler with Vitotronic 100, GC1
B Domestic hot water tank
C Heating circuit with mixing valve
Plugs
§ Boiler temperature sensor
aJ A Temperature sensor T1
aJ B Temperature sensor T2
sL Shunt pump
Power supply connection,
120 VAC
fA Burner (1st stage)
gS A1 Motorized isolation valve
Burner (2nd stage/modulating)
aVD Connection of external
equipment (see page 51)
aVH Connection of external
equipment (see page 51)
5351 338 v1.6
B
CC
A A
3
17B
90
41
40
146
143
52 A1
T1
17A
T2
29
3
17B
90
41
40
146
143
52 A1
T1
17A
T2
29
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