44
Instructions for the installer
When replacing the gas valve or
having difficulty with ignition:
Screw general adjusting screw
"A"
on clockwise until
it stops, then unscrew by 9 revolutions (methane).
Check boiler ignition. If it does not start up unscrew
screw
"A"
by one more revolution, then try to start it
up again. If the boiler does not start up again, follow
the operations described above until the boiler does
start up again.
At this point adjust the burner as previously
illustrated.
NOZZLES - PRESSURES.
Frequently check the CO
2
levels, especially at low flow rates.
ARES 440 - 900
Tec
Type of
Gas
Supply
pressure
(mbar)
Ø
Nozzles
(mm)
Diaphragm
Fan speed (rpm)
CO
2
levels (%)
Power at
ignition IG
(%)
Min.
Max.
Min.
Max.
Nat. gas
(G20)
20
9
-
1700
5540
9.1
9.1
50
Nat. gas
(G25)
25
9
-
1700
5540
9.1
9.1
50
Propane
(G31)
37
9
-
1700
5290
10.2
10.4
50
ERRATA CORRIGE