Air Pressure Switch; Burner Start-Up Cycle - Riello FS20+G.T. Montage- Und Bedienungsanleitung

4.6 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 working at the minimum output, adjust the dial clockwise, increasing its
value until the burner shuts down. Now reduce the value by one set point, turning the dial anti-clockwise.
Check for reliable burner operation, if the burner shuts down, reduce the value by a half set point.
Attention:
To comply with the EN 676 standard, the air pressure switch must operate when the CO value exceeds 1%
(10,000 ppm). To check this, insert a combustion analyser in the flue, slowly reduce the burner air setting and
verify that the burner shuts down by the action of the air pressure switch before the CO value exceeds 1%.

4.7 BURNER START-UP CYCLE

Normal
Thermostat
Motor
Ignition transformer
Valves
Flame
Lock-out
max. 2s
When flame-failure occurs during working, shut down takes place within one second.
20014622
40s
8
Lock-out, due to ignition failure
max. 2s 40s
GB
D4172
3s