Product Information: The pump is located after the primary heat exchanger within the appliance and allows the heated water to be moved around within the closed heating system. In combination boilers , the pump is usually situated before the diverter valve to allow circulation through the central heating and DHW systems.
This part is present in 8 different boilers in the Vaillant range including the Vaillant ECOmax VU 186 E , ECOmax VU 226 E , ECOmax VUW 236 E , ECOmax VUW 286 E , VU 186 E .