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hiu

Choy Hiu Fung (Chinese: 蔡曉鋒; Jyutping: coi3 hiu2 fung1; born 17 January 1996) is a Hong Kong road cyclist, who currently rides for UCI Continental team HKSI Pro Cycling Team.

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  1. J

    Hot water only when heating turned on

    Hi, we have an HIU unit, which we only get hot water from the taps when we turn on the heating unit. A number of engineer have come in to check but they have stated they couldn't see any issues. Any thoughts? could it be the heating plate?
  2. M

    How do you wire a Google Nest to a Evinox 40-10E HIU (E-ON)

    Hello members, Does anybody know how to wire a nest heat link to an Evinox HIU? I know I need to replace the room module/thermostat with the nest controller and supply a 12v connection to the heat link. I also know to supply the heat link with a 240v connection for power from the HIU...
  3. S

    Hiu hot water issue- only warm water not hot

    I am working in a flat that only has luke warm hot water. I replaced the PM valve which seemed to fix the problem a month later ot has returned. I have cleaned the heat exchanger and ther dosnt seem to be a blockage. I have checked the thermostatic control valve all seems fine. When I flush the...
  4. M

    URGENT HIU leaking - short term fix

    Hi all, I am completely new to HIUs and I need some advice with regards to the best course of action. The three way valve / proportional modulation (PM) valve of my Meibes HIU is leaking. This is due to the fact that the water in the the primary flow has a lot of gunk. I´m currently waiting on...
  5. C

    Danfoss HIU top up pressure

    Hi, I need to install TRV on 3 rads in my flat. I'm looking at my Danfoss HIU (picture attached). I cannot workout how can I top up the pressure if I were to drain the system to install the TRV. I might need a filing loop for this. Anyone familiar with this HIU? Another question, would it be...
  6. U

    I Need Your Help! Underfloor Heating Not Working - Flat with HIU

    Hi Plumbersforums Experts, I have a question that I hope the experts in this forum can help me with. Our underfloor heating (water) has stopped working a few weeks ago. We live in a new-build block of flats with a central boiler and an HIU unit in our flat. I have asked two engineers to...
  7. T

    HIU Flow Rate Dropping

    Hi All I live in a new build block of flats. We all have HIUs. This model. Type 2 HIU Connection for Primary & Secondary Heating Circuits - Switch2 - https://www.switch2.co.uk/product/type-2 The entity that owns the system didnt maintain it very well so they just had to flush the whole...
  8. R

    HIU - how do they work?

    I've recently found out I have a HIU (heat interface unit) in my new build flat. I've been searching the web for info on how they work, but none of them answer my main question - does HIU work by providing heated water direct from a central plant into my flat, or is the heat generated by it used...
  9. O

    Annnually Service HIU

    Hi lads, I just wanted to ask you is there any annually service for HiU boilers? If that’s the case what would Service and what parts should be changed in order to make a good service. Kind regards, Ron
  10. D

    Isolate water to heating interface unit (HIU)

    Hi there. I'm trying to work out how to isolate the water in my flat, so I can fix a leaking shower tap. My flat has a heating interface unit (HIU), which is being fed by various pipes - see photo. I'm not sure though what pipes I should / can isolate to stop the flow, can anyone provide any...
  11. L

    Danfoss HIU Filling Loop

    Hi, hoping someone out there can help.We have a Danfoss HIU. The pressure is down and have been told to fill the system. I've connected everything as shown in the pics but the gauge isn't budging. [/IMG]
  12. eagleeye

    HIU issue and possible leak

    Hi guys hopefully you can help me here. I went to a property yesterday for a problem with no heating. Found that they had a HIU for hot water and heating and narrowed the problem down to the motorized valve. My question is though does anyone know what would cause all the foaming and crud around...
  13. F

    Vital Energi HIU not providing heating

    Hi there, I am currently trying to rectify a fault with a Vital Energi Heat Interface Unit (HIU) inside a new build flat, the pump inside is a Grundfos Alpha 2L and shows that power is going to it as it lights up green on all the settings although when changing the speeds it doesn't sound like...
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