Connecting An Atmospheric Burner - Viessmann VITOTRONIC 200 Installation And Service Instructions Manual

Electrical connections
Extending two-stage/modulating burners, part...
Max. power consumption
■ Two-stage: 1 (0.5) A
■ Modulating: 0.1 (0.05) A
A
BN BU BK
K1
K1
C
K2
K2
BN BK BU
B
Fig.19
To the control unit
A
To the burner
B
Junction box with relay K1 and K2
C

Connecting an atmospheric burner

The burner cable is included in the standard delivery of
the boiler.
22
(cont.)
Terminal codes
T6, T7, T8 Control chain "Burner stage 2", via two-
point controller
Control chain "modulation controller", via
three-point controller
T6 From the burner
T7 Modulating burner close
T8 Modulating burner open/stage 2 ON
Signal flow direction:
Control unit
→
Signal flow direction:
Burner control unit
→
Colour coding to IEC 60 757
BK Black
BN Brown
BU Blue
Connect the burner to DIN 4791 [or local regulations].
burner