Halstead Heat Exchangers (Page 4)
There are two different types of heat exchanger that can be present, the primary heat exchanger and the secondary heat exchanger. The primary is present in almost all boilers and it transfers the 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.
HALSTEAD 988441 HEAT EXCHANGER ASSY. HERO 30 TO 60 & WICKES HEAT 40 & 60
Part No: 1294282 / MPN: 988441