The Biasi flow switch acts as a safety instrument. It is a switch with an in-built sensor that sits in the pipework for both the central heating and domestic hot water systems. When the pump is powered up, the flow switches sense this movement and feed the information back to the printed circuit board, allowing the ignition sequence to progress. The flow switch function is to make sure that the burner cannot switch on if the system is dry or low on water.

Brand Name	Biasi