Air Pressure Switch - Riello 40 Serie Instrucciones Para La Instalación, Uso Y Mantenimiento

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
D7404
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%.
3302
8
GB