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ufh under kitchen unit

Discuss ufh under kitchen unit at UK Plumbers Forums; search the web on this subject, getting both yes and no answers. Hoping I can get an definite answers on here....
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    Default ufh under kitchen unit

    search the web on this subject, getting both yes and no answers.
    Hoping I can get an definite answers on here.

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    Default Re: ufh under kitchen unit

    Where you are short of heat output, you can go under the units. But it's best not to, especially where you want to store food.
    Uheat – Wojtek likes this.

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    Default Re: ufh under kitchen unit

    What the situation?

    Are you having it installed or is it already installed?
    Are you remodelling the kitchen?
    Uheat – Wojtek likes this.



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    Default Re: ufh under kitchen unit

    If you're remodelling the kitchen then simply adhere some kingspan or similar product underneath the cabinets & fit some vents to the plinths to allow the heat to circulate into the room, If you're installing the UFH then why waste time, energy & money on extra meters of pipework etc. that's really unnecessary, & will give no benefit to the end user at all just heating a dead space.
    Uheat – Wojtek and Masood like this.

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    Default Re: ufh under kitchen unit

    Hi there,

    when we design the system we never go for UFH under the kitchen units (as long as we know exactly where kitchen units will be).
    In some cases when customers haven't got a final design of the kitchen they cover the whole area with pipework and then they use thin layer of insulation board underneath the cabinets.

    Hope that helps.

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    Default Re: ufh under kitchen unit

    Quote Originally Posted by Uheat – Wojtek View Post
    Hi there,

    when we design the system we never go for UFH under the kitchen units (as long as we know exactly where kitchen units will be).
    In some cases when customers haven't got a final design of the kitchen they cover the whole area with pipework and then they use thin layer of insulation board underneath the cabinets.

    Hope that helps.
    Can you please explain why? (apart from the cost)

    I thought that these system were more of less self regulating i.e. as the air temperature increases the heat flow from the thermal mass of the floor decreases.

    If there is no heating of the thermal mass under sections of the floor isn't heat drawn away from those areas that are, reducing warm up time & possible effecting overall heat outputs?

    Thanks Chris
    Last edited by chris watkins; 07-11-2016 at 10:28 AM.
    Nolite id cogere, cape malleum majorem

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    Default Re: ufh under kitchen unit

    Hi Chris,

    Running the pipes under the kitchen units doesn't cause any problems as long as there's no food being stored in the kitchen units.

    This is the main reason why most of companies don't recommend to install the UFH underneath the units.

    I agree with the fact that colder screed will suck the heat from the warmer areas but's it's only for the initial heating up times.
    If there's plenty of units within the kitchen we normally narrow the pipe spacing to 150mm which reduce the response time to provide a bit more output.

    Regards

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    Default Re: ufh under kitchen unit

    Many thanks for your input Uheat

    I wish I had U/F under my kitchen units the plates are bliming freezing this time of year.
    Uheat – Wojtek likes this.
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    Default Re: ufh under kitchen unit

    Just had a look at your Web site 32mm pipe haven't seen that before!!

    That might come in handy for some of the larger jobs, what sort of heat loads can it supply at say 70/50?
    Nolite id cogere, cape malleum majorem

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    Default Re: ufh under kitchen unit

    Morning Chris,

    32mm pipe is being used for general plumbing together with press or compression fittings.
    We've never supplied 32mm pipe for the UFH, even for commercial jobs we've done 20mm pipe @ 300mm / 200mm centres depends on the project requirements.
    I haven't even got any figures with outputs of 32mm pipe to give you honest answer.

    Have a good day.

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    Default Re: ufh under kitchen unit

    Quote Originally Posted by Uheat – Wojtek View Post
    Morning Chris,

    32mm pipe is being used for general plumbing together with press or compression fittings.
    We've never supplied 32mm pipe for the UFH, even for commercial jobs we've done 20mm pipe @ 300mm / 200mm centres depends on the project requirements.
    I haven't even got any figures with outputs of 32mm pipe to give you honest answer.

    Have a good day.
    I was thinking more about the distribution to manifolds etc rather than U/F circuits themselves, still handy to know.

    Thanks anyway Chris
    Nolite id cogere, cape malleum majorem

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