Technical data

139
Components – Vitotronic 100
Flue gas temperature sensor (for VD2/VD2A/CT3 only)
The sensor measures the flue gas
temperature and monitors the selected
limit value.
Electrical connection
The sensor is inserted in socket ”15”
on the boiler control.
Check flue gas temperature sensor
1. Disconnect plug aG in the terminal
compartment of the boiler control.
2. Measure resistance of sensor at
terminals ”1” and ”2” of the plug.
Flue gas
temperature
in °C / °F
Resistance
in Ω
ΩΩ
Ω
180 / 176
160 / 320
200 / 392
650
800
880
3. Compare the value measured with
the actual temperature. If the value
differs significantly, check
installation and, if necessary, replace
sensor.
Technical data
Degree of protection: IP 60
Ambient temperature:
During operation:
–20 to + 600°C
32 to + 1112°F
During storage and transport:
–20 to + 670°C
–4 to + 158°F
5351 340 v1.4
0
500
40 80
120 160 200 240 280
540
580
620
660
700
740
780
820
860
900
940
980
1020
Resistance in
Ω
Ω Ω
Ω
Flue gas temperature in °C / °F
32 104 176
248 360 392 464 536