Automatic gas firing system - has contacts in series for air absence protection flame monitor, ignition monitor, and valve relay

摘要

Automatic gas firing system has a valve-controlled gas burner in a firebox and a ventilator and flame monitor, for the flame of the pilot burner associated with the gas burner, and additionally tested by a conventional safety device, which preferably consists of a thermoelectric ignition safety unit, or a magnetic valve. For the main gas magnetic valve the contacts are in series for air absence protection, flame monitor, the thermoelectric ignition safety unit and a magnetic valve relay in the circuit. The pre-flushing time is eliminated, giving hot water from the start.