Product Information: There are two different types of heat exchanger that can be installed, the primary heat exchanger and the secondary heat exchanger. The primary is present in almost all boilers and it allows the transfer of heat from the burner to the water within the system. The secondary heat exchanger is only present in combination boilers and allows the heat to be transferred between one closed system and another.
We only have this part as fitting one appliance, The Glowworm BETACOM 24C .