Unigas KPBY70, Manual Of Installation - Use - Maintenance

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PART III: OPERATION
45
11.12 Suntec TV Pressure governor
11.13 Setting the combustion head position
The burner is factory-set with the combustion head “fully-ahead” that refers to the maximum output. As for “fully-ahead” position, it
means that the head is towards the boiler, “fully-backward” position means that the head is towards the operator.
G1: move diffuser,
gas nozzle and oil nozzle together
G2: move oil nozzle
11.14 Center head holes gas flow regulation
To adjust the gas flow, partially close the holes, as follows:
1
loosen the three V screws that fix the adjusting plate D ;
2 insert a screwdriver on the adjusting plate notches and let it move CW/CCW as to
open/close the holes;
3 once the adjustmet is performed, fasten the V screws.
The adjusting plate correct position must be regulated in the plant during the commissio-
ning.
Pressure adjustment
Remove cap-nut 1 and the gasket 2, unscrew the lock nut 4. To increase pressure,
twist adjusting screw 3 clockwise.
To decrease the pressure, twist screw counterclockwise. Tight the lock nut 4, refit the
gasket 2 and the cap nut 1.
Key
1 Cap nut
2 Gasket
3 Adjusting screw
4 Lock nut
5 Gasket
Fig. 31
CAUTION: perform these adjustments once the burner is turned off and cooled.
Key
G1 Ring Nut
G2 screw
G1
G2
V
D