The Biasi flow switch acts as a safety device. It is a switch with an integrated sensor that is installed in the central heating and domestic hot water systems' piping. When the pump is switched on, 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's purpose is to prevent the burner from turning on if the system is dry or low on water.

Brand Name	Biasi