Description
Function
Preconditions for startup Burner control is reset Contacts in the line are closed No undervoltage Flame detector is darkened, no extraneous light Undervoltage detection An additional electronic circuit ensures that if mains voltage drops below approximately AC 165 V, burner startup will be prevented, or – without release of oil – lockout will be triggered. Control sequence in the Whenever lockout occurs, the outputs for the fuel valves, the burner motor, oil preheaevent of fault ter and ignition equipment will immediately be deactivated (< 1 second). The lockout indication lamp changes to red and terminal 10 («AL») for remote lockout indication receives voltage. This state is also maintained in the event of mains voltage failure.
Indications Lockout position The lockout position is indicated with the lamp integrated in the lockout reset button. Flame strength Only with LOA36… Indication of the flame strength (green LED) is used for checking the flame signal. To ensure reliable burner operation, this LED must be lit. If the green LED flickers or extinguishes during burner operation, the light conditions at the burner are poor, caused by dirt for instance. Operation Only with LOA36… When the contacts of the control thermostat are closed, the orange LED is lit, indicating the start of the oil preheater’s heating up phase (if present).
