Air Pressure Switch - Riello GS5 Installation, Use And Maintenance Instructions

AIR PRESSURE SWITCH

The air pressure switch is set after all other adjustments have been
made. Begin with the switch at the lowest setting. With the burner
function at the required power, turn the knob slowly in a clockwise di-
rection until burner lockout.
Then turn the knob anticlockwise to an extent that is around 20% of
the adjusted value and then check that the burner starts up properly.
If the burner locks out again turn the knob slightly in an anticlockwise
direction.
Attention:
In conformity with the standard, the air pressure switch must prevent
the air pressure falling below 80% of the adjusted value and the CO
in the flue gases exceeding 1% (10,000 ppm). To check this, insert a
combustion analyser in the flue, slowly reduce the burner air setting
(for example with a piece of cardboard) and verify that the burner
locks out before the CO value in the flue gases exceeds 1%.
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