C.I.B. UNIGAS
- M039203CC
24
rate set during the gas operation adjustments (see previous paragraph): checking always the combustion parameters, the adjustment is to
be performed by means of the
SV2
adjusting cam screw (see picture) when the cam has reached the high flame position.
8
once the oil rate is adjusted at the maximum output (the air rate was adjusted in the gas regulation), go on with the point to point
adjustment on the
SV2
(light oil side) adjusting cam as to reach the minimum output point, as described on the next steps.
9
as for the point-to-point regulation, move the gas low flame microswitch (cam III) a little lower than the maximum position (90°);
10 set the
TAB
thermostat to the minimum in order that the actuator moves progressively towards the low flame position (as far as
fully-modulating burners, see the related paragraph);
11 move the low flame cam to the minimum to move the actuator towards the low flame until the two bearings find the adjusting screw
that refers to the lower position: screw
V2
to increase the rate, unscrew to decrease.
12 The low flame position must never match the ignition position that is why the cam must be set 20°- 30° more than the ignition posi-
tion.
Turn the burner off; then start it up again. If the adjustment is not correct, repeat the previous steps.
As far as fully-modulating burners see paragraph on page 21.
