Unigas HTP90A, Руководство по установке, использованию и обслуживанию

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10 in order to get the maximum oil flow rate, adjust the pressure (reading its value on the PG pressure gauge) without changing the air flow
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.
11 as for the point-to-point regulation in order to set the cam foil shape, move the oil low flame microswitch (cam V) a little lower than
the maximum position (90°);
12 set the TAB thermostat to the minimum in order that the actuator moves progressively towards the low flame position;
13 move cam V(low flame) towards the minimum to move the actuator towards the low flame until the two bearings find the adjusting
screw that refers to a lower position: screw V2 to increase the rate, unscrew to decrease, in order to get the pressure as showed
on chart/diagram on “Adjusting light oil flow rate” on page 32, according to the requested rate.
14 Move again cam V towards the minimum to meet the next screw on the adjusting cam and repeat the previous step; go on this way
as to reach the desired low flame point.
15 The low flame position must never match the ignition position that is why cam V 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.
Fig. 18 Fig. 19
Pressure gauge port
RP
PG
V2
SV2