Viessmann VITOTRONIC 100 GC1B Service Manual Page 25

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Heating system types
25
Circuit Diagram 10
Single-boiler system with several heating circuits and one mixing valve heating circuit
in conjunction with Vitocrossal 300
A Boiler with Vitotronic 100, GC1
B Domestic hot water tank
C Heating circuit with mixing valve
D Mixing valve heating circuit
or
E Underfloor heating circuit with
mixing valve
F Limit thermostat (max. limit)
G Neutralizing unit
Plugs
§ Boiler temperature sensor
% DHW tank temperature sensor
(accessory)
A1 Close mixing valves with
external heating circuit controls
sA DHW pump
Power supply connection,
120 VAC
fA Burner (1st stage)
Burner (2nd stage/modulating)
aVD Connection of external
equipment (see page 51)
aVH Connection of external
equipment (see page 51)
5351 338 v1.6
3
B
C D
A
90
41
40
146
143
G
or
E
F
5
21
A1
20
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