Title: 31 Legionella sikkring.pdf.pdf
Service signal connection, view towards the plug socket in control unit.321Pin 1, external voltage from the monitoring source 0-50 V DC or AC Pin 2, outlet live when failure in the system.Pin 3, outlet live when all OK.Connection between Pin 1 and 3 = Operating OK.Connection between Pin 1 and 2 = Malfunction.