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20039847GB
B´ Solenoid valve receives control signal
●
safety time begins (max. 10 s)
●
solenoid valve opens (Danfoss) / closes (Suntec)
●
oil atomising begins
●
flame has to be ignited during the safety time, otherwise the control unit goes to
lockout.
B Flame ignites
●
flame relay is energised, whereupon terminals 8 and 3 in control unit connect on flame
relay's contact. Opening of contact in thermostat of preheater does not stop the burner
during flame
●
burner has started
●
post-ignition till operating position of control unit.
C Control unit/burner in normal operating position
●
control program of control unit ends
●
burner remains operating supervised by the control unit (flame) and controlled by
control thermostat.
D Controlled shutdown with control thermostat
●
burner motor stops
●
solenoid valve closes
●
flame extinguishes.
See chapter ”Control Functions in the Event of Faults”.
