Viessmann VITOTRONIC300 Installation And Service Instructions Manual page 35

Weather-compensated, digital boiler control units for use with boiler models vd2a, vd2 and ct3
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Installation Sequence
Vitotronic 300, GW2B Installation and Service
Overview of Electrical Connections
(continued)
Legend
A Vitotronic 300 GW2B
B Junction box
C Burner motor power supply (refer to page 53)
fÖ Vitotronic 300 GW2B power supply
35

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