Systems - Viessmann VITOCROSSAL 200 Type CM2 Technical Manual

Control units
(cont.)
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
Temperature controller
Coding address "06" for electronic max-
imum temperature limiter (Vitotronic
100)
Maximum temperature of the on-site
control unit
Operation with a modulating burner
A
B
41
A Plug to the control unit
B Burner stage 1 (base load) "on"
Connection of on-site control units to the Vitotronic 100, type GC4B, in single boiler systems
Control via contacts:
Gas condensing boilers
110 °C 100 °C
100 °C 87 °C
95 °C 85 °C
90 °C 80 °C
C
D
BN
90
BK
BU
E
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 1fA 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
Temperature controller
Coding address "06" for electronic max-
imum temperature limiter (Vitotronic
100)
Maximum temperature of the on-site
control unit
110 °C 100 °C
100 °C 87 °C
95 °C 85 °C
90 °C 80 °C
VIESMANN
87
9