Connecting An Ac Burner - Viessmann VITOTRONIC 300 Installation And Service Instructions Manual

Electrical connections

Connecting an AC burner

Pressure-jet oil/gas burner
The burner cables are included in the standard boiler
■
delivery.
■ Connect burner to DIN 4791.
■ Max. power consumption 6 (3) A
41
STB
TR
L1 N T1 T2 S3 B4
Fig. 23
To the control unit
A
To the burner
B
Plug terminal designations
L1 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 terminal
B4 Hours run meter terminal
Signal flow direction:
Control unit burner
→
Signal flow direction:
Burner control unit
→
Plug equipment codes
fA
STB Control unit high limit safety cut-out
TR Control unit temperature controller
Viessmann MatriX burner for Vitocrossal
The burner cables are included in the standard boiler
■
delivery.
■ Max. power consumption 6 (3) A
38
:
fA
:
H1 Burner fault signal
BZ Hours run meter
90
BN
BK
BU
Fig. 24
To the control unit
A
To the burner
B
Plug terminal designations
T6, T8 Control chain burner stage 2 ON or modulation
controller Open
T6, T7 Control chain burner stage 2 OFF or modula-
tion controller Close
Signal flow direction:
Control unit burner
→
Signal flow direction:
Burner control unit
→
Colour coding to IEC 60757:
BK Black
BN Brown
BU Blue
Burner without plug
Fit the mating plug from Viessmann or from the burner
manufacturer. Connect the burner cables.
:
lÖ