Viessmann VITOTRONIC 300-K Instructions d'exploitation Page 30

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Vue de la page 29
30
90
BN
BK
BU
A
T7T8
T6
90
T7T8
T6
B
BN
BK
BU
A
To the control unit
B
To the burner
Terminal codes
T6, T8 Control chain burner stage 2 ON
or modulation controller Open
T6, T7 Control chain burner stage 2
OFF or modulation controller
Close
Colour coding to DIN/IEC 60757
BK Black
BN Brown
BU Blue
Connecting the three-phase burner, type GC1B
Safety chain, potential-free
Note
If there is a jumper from the external con-
ductor to the control voltage in the
burner, it may have to be removed.
Always observe the burner manufac-
turer's details.
Installation, Vitotronic 100
Connecting the AC burner, type GC1B
(cont.)
5815 091 GB
Vue de la page 29
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