Product Information: There are two types of heat exchanger that can be present, they are the primary heat exchanger and the secondary heat exchanger. The primary is present in almost all boilers and uses heat from the burner to raise the temperature of water within the system. The secondary heat exchanger is exclusive to combination boilers and allows the heat to be transferred between two closed systems.
This part is present in 3 different boilers in the Glowworm range including the Glowworm CXI 24 , CXI 30 , CXI 38 .