All burners factory tested at 230V 50 Hz monophase (Max Gas 350) or 400 V 50 Hz three-phase (Max Gas 500) for
motors and 230V 50 Hz monophase for auxiliary equipment. If mains supply is 230 V 50 Hz threephase withuot neu-
tral, change position of connectors on burner as in fig. Protect burner supply line with safety fuses and any other devi-
ces required by safety standards obtaining in the country in question.
Once connected the burner to the gas pipeline, it is necessary to control that this last is perfectly sealed. Also verify that
the chimney is not obstructed. Open the gas cock and carefully bleed the piping through the pressure gauge connector,
then check the pressure value trough a suitable gauge. Power on the system and adjust the thermostats to the desired
temperature. When thermostats close, the sealing control device runs a seal test of valves; at the end of the test the bur-
ner will be enabled to run the start-up sequence.
4,0
3,0
2,0
1,0
0,6
0,5
0,4
d=0,3
0,3
d=0,225
0,2
0,1
12
24
40
(a)
d = diamètre chambre de combustion
kW
MOUNTING TO THE BOILER
ELECTRICAL CONNECTIONS
CONNECTION TO THE GAS PIPELINE
COMBUSTION CHAMBER
d=0,7
d=0,6
d=0,5
d=0,4
70 100
190
480
420010567100 Max Gas 350 - 500 PR-MD HT
The burners have been certified in combustion
d=0,8
chambers according to EN 676 standards.
Consult the burner manufacturer if the combu-
stion chamber of the boiler in which the burner
is to be installed has smaller dimensions.
Installation must be carried out in com-
pliance with the local provisions
1200
2450
17
EN