AIR PRESSURE SWITCH
Regulate the air pressure switch after first carrying out all the other
burner adjustments with the air pressure switch adjusted to the start of
the scale.
With the burner operating at the requested power level, slowly turn the
adjustment knob clockwise until the burner locks out.
Then give the screw 1/4 turn anti-clockwise and repeat burner ignition to
check for proper operation.
If the burner locks out again, turn the knob anti-clockwise.
2
1
press_aria_002
1 Cover
2 Adjusting knob
AIR REGULATION ON THE COMBUSTION HEAD
The combustion head is equipped with a regulation device that makes
it possible to open or close the air passage between the disk and the
head.
It may be necessary to have high air pressure upstream of the disc,
so as to prevent flame pulses. This condition is indispensable when
the burner operates on pressurised combustion chamber and/or with
high heating load.
When the
maximum required supply
is reached, correct the
position of the device closing the air on the combustion head by mo-
ving it forwards or backwards so as to have a suitable air flow for the
supply,
with suction air adjustment damper conside-
rably open.
0002934190
D - Flame disk adjusting screw
E - Flame disk position index
0=MIN
0=MIN
0=MIN
4=MAX
3=MAX
4=MAX
BTG 15 ME
BTG 20 ME
BTG 28 ME
DETAIL OF THROTTLE VALVE FOR GAS FLOW REGU-
LATION BY MEANS OF SERVOMOTOR
A) Butterfly gas valve position reference index
B) Gas modulation servo motor
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