Vaillant are two different kinds 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 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 two closed systems.
Fits multiple appliances
Technical specification
TypeHeat ExchangerCompatible WithEcotech Plus 630 VU306/3-5 R1, Ecotech Plus 630 VU306/5-5, Ecotech Plus 630 VU306/5-5 R1 and Ecotech Plus 630 VU306/5-5 R2Supplier Part Number0020135133Brand NameVaillant
Reviews
Vaillant Domestic Hot Water Heat Exchanger 6 Coil 20135133 0020135133