Weishaupt W-FM 100, Installation And Operating Instruction

Page: 145 / 228

Installation and operating instruction
Combustion manager W-FM 100 und W-FM 200
6 Operation
83054802 1/2018-07 La
145-228
Example Actuator Change Reaction
FGR damper OPEN more recirculated flue gas (+)
Air regulator in
front of FGR suc-
tion chamber CLOSED decreased combustion air (–)
increased negative pressure (+)
more recirculated flue gas (+)
Speed Increase increased combustion air (+)
increased negative pressure (+)
more recirculated flue gas (+)
The setting of the air damper (Air) on the burner and the position of the mixing head
(Aux1) have little influence on the amount of recirculated flue gas.
Initial commissioning without FGR
To ensure sufficient negative pressure for flue gas recirculation, slightly close the
air dampers in front of the FGR connector housing at each load point during the ini-
tial commissioning without FGR.
Once the combustion limit is determined and the excess air is set:
Close air dampers in front of FGR connector housing (Aux2) until the O
2
content
reduces by approx. 0.4 % points.
Increase the O
2
content again to the previous value using the air influencing ac-
tuators, whilst observing the flame stability.