Ecoflam MAX GAS 350 PAB TC Manual De Uso página 14

EN
Air pressure switch calibration
The air pressure switch is provided for
monitoring the pressure of the
combustion air fan.
Unscrew screws A and B and remove
cover C.
After the air and gas setting you have to
D
calibrate the air switch with the burner C
working on the low flame by slowly turning
the relative knob clockwise until the burner
locks out. Read the value and then A
decrease it by 15%.
WARNING: the air pressure switch shall
B
prevent the air pressure to go below 85%
from the adjustment value in order to
prevent the CO in the fumes to exceed 1%
(10000 ppm).
Min gas pressure switch
The gas pressure switch has the function
to check that the gas pressure before the
gas valve does have the minimum
pressure to make the burner running
correctly.
Unscrew off and remove cover M.
N
M
- Set knob N to a value equal to 60% of
gas nominal feed pressure (i.e. for natural
gas nom. pressure = 20 mbar, set knob to
a value of 12 mbar; for LPG nom. pressure I
of G30/G31- 30/37 mbar, set knob to a
value of 18 mbar). Screw up cover M.
L
Operating check
Flame monitoring must be checked for
safety as part of initial commissioning and
also after servicing or if the system has
been out of operation for any significant
period of time.
- Start attempt with gas ball valve closed:
the automatic combustion control unit must
switch to gas shortage or malfunction after
the end of the safety period.
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