Unigas RG1025, Manual Of Installation, Use And Maintenance

Page: 26 / 40

C.I.B. UNIGAS - M039144CD
26
Adjusting the combustion head
To let the burner operate at a lower output, loose the VB screw and move progressively back the combustion head towards the MIN
position, by turning clockwise the VRT ring nut. Fasten VB screw when the adjustment is accomplished.
Calibration of air pressure switch
To calibrate the air pressure switch, proceed as follows:

Remove the transparent plastic cap.

Once air and gas setting have been accomplished, startup the burner.

During the pre-purge phase o the operation, turn slowly the adjusting ring nut VR in the
clockwise direction until the burner lockout, then read the value on the pressure switch scale
and set it to a value reduced by 15%.

Repeat the ignition cycle of the burner and check it runs properly.

Refit the transparent plastic cover on the pressure switch.
“MAX”
head position head position
VB VRT
VR