LGW A2 ver. 2
Pos.
Item
A
Higher pressure
B
Lower pressure
C
Electrical connections
D
Adjustment wheel
1 and 2 Cross-head screw
If the pressure difference does not rise above the switch setting value, the burner will
shut down. The differential air pressure switch should be set to trigger before the CO
concentration in the flue gas exceeds 1 vol-% (10,000 ppm).
Burner
Factory setting "W.C.
350 M
16.5
450 M
18.1
When using variable speed drive
● factory setting is set to 4.01 "W.C.
● maximum adjustment range should be between 35 Hz and 50 Hz
To ensure proper burner function, the differential air pressure switch
may have to be readjusted to match the actual conditions at the
installation site. Make sure not to exceed the given CO limit.
To adjust differential air pressure switch setting at current nominal burner
capacity
1. Remove the screws and open the protective cover.
2. Start the burner.
3. Turn the switch slowly towards the maximum until the burner shuts down.
4. Turn the switch approx. 2.0 "W.C. from this point backwards (towards the
minimum).
5. Attach the protective cover and reset.
38 (114)
M4248 2316EN
