| TF974/976 - Oil Burner Safety Control
For 1- or 2-stage oil burners up to 30 kg/h throughput and intermittent operation with or without oil preheating
Flame detection:
- Photo resistor MZ 770 S
- Infrared-flicker detector IRD 1010
- UV flame sensor UVD 970
A special contact in the control unit short-circuits the thermo-switch of the fuel heater as soon as the burner is operating and the flame signal is present. Therefore interruption of the burner operation due to decreasing oil temperature can be prevented (e.g. in case of high oil flow).
If the control box goes into lock-out mode, the oil preheater power supply is also disconnected. | 
