Viessmann VITOTRONIC 100 GC1B Operations Instructions Page 91

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91
Installation
Connecting an AC burner (cont.)
Atmospheric burner
The burner cables are included in the standard boiler delivery.
Max. power consumption 6(3)A.
BK ³B4
BK* ³S3
BU ³N
BN ³T2
A To control unit
B To burner
Colour coding to DIN IEC60757
BK black
BK* black with imprint
BN brown
BU blue
Terminal codes
L Phase via high limit safety
cut−out to the burner
PE Earth conductor to burner
N Neutral conductor to burner
T1, T2 Control chain
S3 Burner fault
B4 Hours run meter
Terminal codes
T6, T8 Control chain
Burner stage 2ON via two
point controller
T6, T7 Control chain
Burner stage 2OFF
~ Signal pass direction:
Control unit³burner
| Signal pass direction:
Burner³control unit
5862730GB
A
B
BK BK* BU BN
BN
BK
BU
A
90
T7T8
T6
B
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