BURNER CONNECTION TO THE BOILER
The gas supply pipe must be suitably sized for the pipe length and
gas output according to the UNI Standard. It must be perfectly
airtight and properly checked before testing the burner.
It is essential to install on this piping, near the burner, a suitable
fitting to allow an easy disassembly of the burner and/or the ope
-
ning of the boiler door.
The burner is equipped with a coupling flange which slips on the
combustion head.
When applying the burner to the boiler, it is necessary to correctly
position the flange so that the burner head enters the furnace to
the extent specified by the boiler manufacture.
When the burner has been correctly applied to the boiler, connect
it to the gas pipeline.
If the gas valve incorporates a filter and a gas pressure stabilizer,
only a shut-off cock and an anti-vibration joint have to be fitted
onto the gas pipeline.
Only in the event the gas pressure is higher than the maximum le
-
vel permitted by the Standards, a suitable pressure reducer must
be installed on the gas pipeline outside the heating plant.
Install an elbow directly on the burner gas pipe before applying
the removable fitting, so as to allow the boiler door, if installed,
opening after opening the fitting itself.
1
2
3
4
5
6
7
8
8871
1 Boiler
2 Door
3
Door opening direction
4 Burner
5
DUNGS monobloc gas valve
6 Fitting
7
Vibration-proof joint
8
Gate valve
9
7 19 13
0002932940
5
A
•
Apply the isolating seal -13 between the flange that fastens the
burner and the boiler plate.
•
Fasten the flange -19 to the boiler using the stud bolts with their
nuts and washers -7.
•
Insert the burner into the flange and tighten the screw -5 with
the nut -9.
DANGER / CAUTION
When fixing the burner to the flange, position the combu
-
stion head axis as illustrated in the diagram (angle A).
ENGLISH
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