
Setting the gas valve by pressure measurement
This method is less accurate, but usually gives a sufficient result.
1.
Switch off the appliance using the on/off key (- on service display).
2.
Remove the front cover of the appliance.
3.
Turn the measuring nipple (C) on the gas valve open with two turns and
connect this through a tube to the plus connection of the pressure gauge.
4.
Switch on the appliance using the on/off key.
5.
Set the boiler to the lowest power by simultaneously pressing the service
and – keys on the operating panel until an
L
appears on the display.
6.
Read the pressure. This should be about -5 Pa or 0.05 mBar (min. –10, max.
0 Pa. or min.–0,1 mBar – 10 max. 0 mBar). When this is not the case,
proceed as follows for setting:-
7.
Remove the cover cap (A) with a flat screwdriver.
8.
Set the pressure using setting screw (B) (clockwise higher and
counterclockwise lower).
9.
After measuring and setting, replace the cover cap A and close the
measuring nipple (C) again.
10.
Remount the front cover of the appliance.
Caution
Check the measuring nipples used for gas tightness.
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