Description

• Automatic gas valve proving (leakage test) based on the pressure proving principle.
• Used in connection with 1 or 2 commercially available pressure switches, valve proving is
  automatically initiated with every burner startup, either
  – prior to burner startup
  – during the prepurge time if it lasts a minimum of 60 seconds
  – immediately after a controlled shutdown, or
  – on completion of the burner control’s control sequence, e.g. at the end of the
  postpurge time