Connecting The Burner - Viessmann Vitotronic 300 GW6B Installation Instructions Manual

Electrical Connections

Connecting the Burner

Legend
A To the Vitotronic control
B To the burner (burner control unit)
C KM BUS cable
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Vitotronic 300, GW6B Installation and Service
The burner cables are included in the standard boiler
delivery.
Max. power consumption 3A.
Terminal codes
L1 Phase via external safety equipment (if installed)
to the burner
 Ground conductor to burner
N Neutral conductor to burner
T1 120V~ from burner control unit
T2 Base load demand
S3 Connection for burner fault
B4 Connection for hours run meter
Insert plug fA and aVG into the corresponding plug of
the burner control.
Route beneath the top B rail in a bundle using plug-in
cable retainers.
Connect plugs fA and aVG to the corresponding plugs in
the Vitotronic control unit.