Installation and operating instruction
Combustion manager W-FM 100 und W-FM 200
4 Installation
83054802 1/2018-07 La
46-228
4 Installation
4.1 Installing O2 sensor
O
2
trim is only possible with W-FM 200 with O
2
module.
For O
2
measurement, an O
2
sensor must be fitted in the flue gas pipe and connec-
ted to the O
2
module. The distance between O
2
sensor and O
2
module must be no
more than 10 m.
Flange dimensions
90 mm
51 mm
180 / 260 mm
53,5 mm
48 mm
QGO 21
QGO 20
Prerequisite
CAUTION
Damage to the O
2
sensor caused by overheating
Flue gas temperature above 300 °C can damage the O
2
sensor.
Avoid flue gas temperatures above 300 °C at the O
2
sensor.
Install O
2
sensor only with the corresponding flange.
It must not be possible for extraneous air to enter in front of the sensor and at a
distance of 2 x Ø of the flue gas pipe behind the sensor.
