Settings at the Vitotronic 100
■ Code "01:1" (delivered condition)
■ The cylinder temperature control is activated when the cylinder tem-
perature sensor is connected.
■ The high limit safety cut-out settings and other settings depend on
the system equipment level along with safety equipment to
EN 12828 or EN 12953.
High limit safety cut-out
110 °C
100 °C
Temperature controller
100 °C
87 °C
Coding address "06" for electronic max-
imum temperature limiter (Vitotronic
100)
95 °C
85 °C
Maximum temperature of the on-site
control unit
90 °C
80 °C
Operation with a modulating burner
143
12
3
A
41
41
E
90
B
C
D
BU
BK
BN
A
Plug to the control unit
B
Burner stage 1 (base load) "on"
C
Reduce burner output (modulation controller)
D
Increase burner output (modulation controller)
E
Plug to the burner
Colour coding to DIN IEC 60757
BK Black
BN Brown
BU Blue
External burner start – burner stage 1
Contact at terminals "1" and "2" of plug
aVD
■ Contact closed:
Burner stage 1 is switched ON.
The boiler water temperature is limited by the electronic maximum
temperature limiter (see the Vitotronic 100 service instructions), if it
is set below that of mechanical thermostat "
R
".
■ Contact open:
Burner stage 1 is switched OFF.
Modulating burner connection:
■ Burner stage 1
fA
of the Vitotronic 100
■ Plug
lÖ
from the Vitotronic 100 via modulation controller (on-site) to
plug
lÖ
on the burner.
Settings at the Vitotronic 100
■ Code "01:1" (delivered condition)
■ The cylinder temperature control is activated when the cylinder tem-
perature sensor is connected.
■ The high limit safety cut-out settings and other settings depend on
the system equipment level along with safety equipment to DIN
EN 12828 or DIN EN 12953.
High limit safety cut-out
110 °C
100 °C
Temperature controller
100 °C
87 °C
Coding address "06" for electronic max-
imum temperature limiter (Vitotronic
100)
95 °C
85 °C
Maximum temperature of the on-site
control unit
90 °C
80 °C
Connection of on-site control units to the Vitotronic 100, type GC4B, in single boiler systems
Control via contacts:
Control units
(cont.)
Gas condensing boilers
VIESMANN
87
5822 449 GB
9