Technical data

Installation
29
Connection of the flue gas temperature sensor (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 .
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:
0 to + 600°C
32 to + 1112°F
During storage and transport:
-20 to + 70°C
-4 to + 158°F
5285 941 v.1.5
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