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Hi Argile, I have a plumber who changes these for a past time also heat exchangers. He knows what he is doing it's that he is not familiar with this particular model. This is the only Vaillant boiler we have and have no manuals etc. For any Gas problems we use Gas Safe registered engineers, I...

Hi, We have a Vaillant Turbomax VUW 282E boiler. Common problem heating ok but no hot water on demand. We need to change diverter valve or diaphragm or microswitch. Does anybody have an installation or parts manual they could email showing items or instructions how to change. Also does anybody...