Microprocessor

Microprocessor, electronic components, output relais and flame amplifier are placed on two printed circuit boards. These plus the lockout- and reset circuit are well protected inside a flame resistant, plug-in type plastic housing. The reset switch for reset / remote lockout with its built-in LED for displaying the information system plus the central fixing screw are placed on top of the housing. The wiring base S98 is equipped with spare- and extraterminals and allows together with a variety of cable entry points utmost flexibility of electrical wiring.

The burner control box DLG 974/976 controls and supervises
power burner for gas and dual fuel. The control box is
approved and certified according the relevant European
standards. The use on direct air heaters according DIN 4794
is also possible.
The microprocessor- based programming sequence ensures
extremely stable timings independent of voltage variations,
ambient temperature and/or switch-on cycles. The
built-in information system not only provides a continuous
monitoring of the actual state of the box (very helpful especially
for monitoring the start-up phase) but also informs
about the cause of a possible lock out. The lock out cause
is stored in such a way that it can be retrieved even after a
power failure.
The control box is designed for maximum safety in case of
fluctuations in the voltage supply. If the mains voltage drops
below the permitted level, operation is interrupted and the
control box automatically prevents the start sequence from
being repeated. In this way, the safety of the system is not
put at risk by a drop in the mains voltage. This low-voltage
protection works not only during start-up but also permanently
during operation.