For controlling, igniting and monitoring impulse-controlled, modulating or step-by-step controlled gas burners, for continuous operation with ionisation control, for intermittent operation with UV control (with UV sensors of type UVS) or as a variant for continuous operation with UV control (with UV sensor UVD 1). Display of the program status, device parameters and flame signal. Diagnosis and adjustment of device parameters via optical interface, with manual mode and air valve control.

PFU 778: For directly ignited burners of unlimited capacity,
PFU 798: For pilot and main burners of unlimited capacity, both burners can be monitored independently.
Safety time for start-up: 3, 5 or 10 s,
safety time for operation: 1 or 2 s,
mains voltage: 115 or 230 V AC, for earthed or unearthed mains.

Parameter Name	Parameter Value
Applications	for burners