Codes; Connecting A Pressure-Jet Oil/Gas Burner; Extending Two-Stage/Modulating Burners, Part No. 7404 960 - Viessmann VITOTRONIC 200 Installation And Service Instructions Manual

External blocking via switching contact
!
Please note
The heating system has no frost protection
while it is blocked.
The boiler is not held at the lower boiler water
temperature.

Codes

Plug
lH
"40:2" in the "General" group
Set the effect of the function on the heating circuit pump in coding address "d6" in the "Heating circuit" group.
■
Set the effect of the function on the circulation pump for cylinder heating in coding address "5E" in the "DHW"
■
group.

Connecting a pressure-jet oil/gas burner

The burner cable is included in the standard delivery of
the boiler.
41
STB
TR
L1 N T1 T2 S3 B4
Fig.18
To the control unit
A
To the burner
B
Burner without plug
Install the mating plug from Viessmann or from the
burner manufacturer; connect the burner cable.

Extending two-stage/modulating burners, part no. 7404 960

The function extension is supplied with the boiler.
(cont.)
EA1 extension
Set "3A" (DE1), "3b" (DE2) or "3C" (DE3) in the "General" group to 3 or 4.
Connect the burner in accordance with DIN 4791.
Max. power consumption 4 (2) A.
Terminal codes
L1
PE
N
T1, T2 Control chain
S3
B4
Equipment codes
STB Control unit high limit safety cut-out
TR
H1
BZ
Electrical connections
Phase via high limit safety cut-out to the burner
Earth conductor to burner
Neutral conductor to burner
Connection for burner fault
Connection for hours run meter
Signal pass direction:
Control unit Burner
→
Signal pass direction:
Burner Control unit
→
Control unit temperature controller
Burner fault signal
Hours run meter
21