Riello 40 F5 Installation & Operating Manual page 18

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AC
open
POWER
STANDY BY
CALL FOR
HEAT
AIR
SHUTTER
MOTOR/
PREPURGE
IGNITION
OI L VALVE
FLAME
LOCK OUT
AIR
SHUTTER
RIELLO 40 SERIES OIL BURNER EQUIPPED WITH ELECTRONIC AIR
SHUTTER NO FLAME OPERATIONAL SEQUENCE
I
ELECTRIC AIR SHUTTER CLOSED - WAITING FOR CALL FOR HEAT
ELECTRIC AIR SHUTTER OPENS ~ ONCE FULLY OPEN SWITCHES POWER TO BURNER MOTOR
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BURNER MOTOR STOPS - ELECTRIC AI}R SHUTTER CLOSES
THERMOSTAT OR LIMIT CONTROL ELECTRIC AIR SHUTTER MODES
40 SERIES OIL BURNER MODES
CONSTANT UNITERUPTED 120V POWER SUPPLY
TO ELECTRIC AIR SHUTTER ASSEMBLY