PART III: OPERATION
35
Gas valveversion with SKP2 (built-in pressure stabilizer)
To increase or decrease gas pressure, and therefore gas flow rate, remove the cap
T
and use
a screwdriver to adjust the regulating screw
VR
. Turn clockwise to increase the flow rate,
counterclockwise to reduce it.
Adjusting the combustion head
The burner is factory-adjusted with the combustion head in the "MAX" position, accordingly to the maximum power. To operate the bur-
ner at a lower power, progressively shift back the combustion head, towards the "MIN" position, screwing the screw
VRT
. The ID index
shows how much the combustion head moved.
Key
1 Electrical connection for valves
2 Operation display (optional)
3 Pressure governor closing tap
4 Start setting cap
5 Hydraulic brake and rate regulator
6 Coil
7 Test point connection G 1/8
8 Test point connection G 1/8 downstream of valve 1, on both sides
9
Output flange
10 Test point connection M4 downstream of valve 2
11 Gas flow direction
12 Test connection G 1/8 downstream of valve 1, on both sides
13 Vent nozzle pressure regulator
14 Filter (below cover)
15 Input flange
17 Pressure switch
18 Pressure switch electric connection
Attention! if it is necessary to change the head position, repeat the air and fuel adjustments described above.
T
VR
+
-
VRT
ID