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Unvented Undersink Water Heaters. For D.I.Yers.

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Carrying on from a recent thread about the potential dangers of amateurs installing unvented undersink water heaters incorrectly….. Click on this

 

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    Regards your link to the Screwfix forum, obviously the people posting either did not read or could not understand the installation instructions when they decided to use Speedfit plastic fittings and flexible connectors.

    The instructions say:

    Only the use of copper pipe is recommended for connection to the heater. If any other material is used it must be able to withstand 90°C at 7 bar pressure for long periods.
     

    A couple of cheap flexible connectors from Screwfix is not a good choice of installation materials, you need to apply the same rules as combi boilers, no plastic pipe or fittings within at least a metre from the heater, ideally more.

    I have seen Speedfit pipe fail when installed within a metre of a combi boiler.

    The Ariston installation instructions are detailed and need to be followed, you cannot wing it.

     

     

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  • 0

    Regards your link to the Screwfix forum, obviously the people posting either did not read or could not understand the installation instructions when they decided to use Speedfit plastic fittings and flexible connectors.

    The instructions say:

    Only the use of copper pipe is recommended for connection to the heater. If any other material is used it must be able to withstand 90°C at 7 bar pressure for long periods.
     

    A couple of cheap flexible connectors from Screwfix is not a good choice of installation materials, you need to apply the same rules as combi boilers, no plastic pipe or fittings within at least a metre from the heater, ideally more.

    I have seen Speedfit pipe fail when installed within a metre of a combi boiler.

    The Ariston installation instructions are detailed and need to be followed, you cannot wing it.

     

     

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