Viessmann VITOTRONIC 100 Installation And Service Instructions Manual page 91

Connecting an AC burner
Atmospheric burner
The burner cables are included in the standard boiler delivery.
Max. power consumption 6 (3) A.
BK BK* BU BN
B
BK ³ B4
BK* ³ S3
BU ³ N
BN ³ T2
A To control unit
B To burner
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
(cont.)
A
A
90
BN
BK
BU
B
Colour coding to DIN IEC 60 757
BK black
BK* black with imprint
BN brown
BU blue
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
Installation
91