Unigas HTLX92R Installation Manual page 44

PART III: OPERATION
1 Once the air and gas flow rates are adjusted, turn the burner off, turn the burner on again by means of the CM selector to switch to
the light oil operation (OIL, on the burner control panel).
2 with the electrical panel open, prime the oil pump acting directly on the related CP contactor (see next picture): check the pump
motor rotation and keep pressing for some seconds until the oil circuit is charged;
3 bleed the air from the M pressure gauge port (Fig. 4) by loosing the cap without removing it, then release the contactor.
4 Only if necessary, adjust the supply pressure as follows (see related paragraph);insert a pressure gauge into the port shown on
Fig. 4 and act on on the pump adjusting screw VR (see Fig. 4) as to get the nozzle pressure at 25bar (according to the nozzle
model provided- see page 28).
Pressure gauge port
CP
Suntec T..
VR
Fig. 4
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M