Viessmann VITOTRONIC300 Installation And Service Instructions Manual page 52

Installation Sequence
Burner Connection, Burner Control Wiring
Legend
A Vitotronic 300 GW2B
B Burner
fA Burner, 1st stage
lÖ Burner, 2nd stage/modulation
Note: fA and lÖ cables are pre-routed through the
junction box.
52
Vitotronic 300, GW2B Installation and Service
(continued)
CAUTION
This is a generic connection drawing only!
Follow the burner manufacturer's connection drawings
for Viessmann controls.
For burner without plug-in connection
The burner cables are included in the standard delivery
of the Vitotronic. Connect the burner in accordance with
applicable codes.
Note: Write the terminal numbers or markings on the
drawing for future reference.
Refer to burner manufacturer's instruction on
detailed connections for Viessmann controls.