HIU - how do they work?

[centralheatking]

I have been asked more and more over the last year or two to service or repair hiu's but have always passed it up as there's no training around on them and very little info generally- websites YouTube's etc. Mi's are available but I don't fancy biting off a repair job simply on mi's.

I have never really considered this WC1 this is an important issue. I am with the largest manu of these units later on this week coming and will bring this up informally. Very salient point thank you
Centralheatking

 

[WC1]

I have never really considered this WC1 this is an important issue. I am with the largest manu of these units later on this week coming and will bring this up informally. Very salient point thank you
Centralheatking

Sign me up.
Fyi I think I emailed sadia an enquiry for hiu training well before Christmas but didn't hear anything back...

 

[centralheatking]

I would love to gain experience in this level of system lol.

I understand that there will be courses available from the manufacturer this year, I have suggested we advertise the course on PF . Chking
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yep this one did as well only 250kw if I remember correctly didn’t work well 😀

One I visited last year burnt out and had to be replaced !

 

[king of pipes]

One of my last jobs commercial projects was to upgrade a retirement complex of 21 one bedroom flats in Norwich this was supplied by 2 boiler rooms each with 2 ideal imax boilers manifolded together at 60 kw per unit connected to a large low loss headers , from there the existing flow and return pipework was connected to 65mm , with a large Grunfoss twin headed pump delivering the heating to each flat where the existing 1" flow and returns into the flats was adapted, elson hotwater tanks were removed all the rads and internal pipework stripped out and renewed 8 of us working in pairs took 6 weeks a huge undertaking each flat had its own HIU to serve each flat supplying heat and hotwater via 2 plate heat exchangers in the unit a water meter and heat meter measure their consumption for billing . Regards kop
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Anyone else having problems with attaching pictures . Danny boy you've been a bit quiet lately you been fiddling again ha ha 😉 kop
[automerge]1579592675[/automerge]
This is what's happening mate ?
[automerge]1579592735[/automerge]
Hmmmm that didn't work either
[automerge]1579592897[/automerge]

One of my last jobs commercial projects was to upgrade a retirement complex of 21 one bedroom flats in Norwich this was supplied by 2 boiler rooms each with 2 ideal imax boilers manifolded together at 60 kw per unit connected to a large low loss headers , from there the existing flow and return pipework was connected to 65mm , with a large Grunfoss twin headed pump delivering the heating to each flat where the existing 1" flow and returns into the flats was adapted, elson hotwater tanks were removed all the rads and internal pipework stripped out and renewed 8 of us working in pairs took 6 weeks a huge undertaking each flat had its own HIU to serve each flat supplying heat and hotwater via 2 plate heat exchangers in the unit a water meter and heat meter measure their consumption for billing . Regards kop
[automerge]1579592563[/automerge]
Anyone else having problems with attaching pictures . Danny boy you've been a bit quiet lately you been fiddling again ha ha 😉 kop
[automerge]1579592675[/automerge]
This is what's happening mate ?
[automerge]1579592735[/automerge]
Hmmmm that didn't work either

Maybe this need looking a chaps ????

 

[ShaunCorbs]

One of my last jobs commercial projects was to upgrade a retirement complex of 21 one bedroom flats in Norwich this was supplied by 2 boiler rooms each with 2 ideal imax boilers manifolded together at 60 kw per unit connected to a large low loss headers , from there the existing flow and return pipework was connected to 65mm , with a large Grunfoss twin headed pump delivering the heating to each flat where the existing 1" flow and returns into the flats was adapted, elson hotwater tanks were removed all the rads and internal pipework stripped out and renewed 8 of us working in pairs took 6 weeks a huge undertaking each flat had its own HIU to serve each flat supplying heat and hotwater via 2 plate heat exchangers in the unit a water meter and heat meter measure their consumption for billing . Regards kop
[automerge]1579592563[/automerge]
Anyone else having problems with attaching pictures . Danny boy you've been a bit quiet lately you been fiddling again ha ha 😉 kop
[automerge]1579592675[/automerge]
This is what's happening mate ?
[automerge]1579592735[/automerge]
Hmmmm that didn't work either
[automerge]1579592897[/automerge]

Maybe this need looking a chaps ????

I believe this week he’s changing a few things so if it doesn’t resolve it self by Friday shoot me a pm 🙂

 

[king of pipes]

Let's have another try

I believe this week he’s changing a few things so if it doesn’t resolve it self by Friday shoot me a pm 🙂

Ok Shaun will do bud have a good week . Regards kop

 

[king of pipes]

Here you go chaps installed a few of these nice bit of kit .kop

 

[SJB060685]

Here you go chaps installed a few of these nice bit of kit .kop

Looks good and tidy pipework! I was crap at pipework, probably why I don't install 😂

 

[WC1]

I understand that there will be courses available from the manufacturer this year, I have suggested we advertise the course on PF . Chking
[automerge]1579584219[/automerge]

One I visited last year burnt out and had to be replaced !

Any news on training @centralheatking ?

 

[centralheatking]

Any news on training @centralheatking ?

I have been unwell for past 2-3 weeks but will be at the manufacturers soon as I am getting better
Chking

 

[WC1]

I have been unwell for past 2-3 weeks but will be at the manufacturers soon as I am getting better
Chking

No sweat, get well soon!

 

[king of pipes]

Hope your feeling better CHK more tests for me this week cant seem to get to the bottom of this sick of feeling crap . Regards Kop

 

[centralheatking]

Hope your feeling better CHK more tests for me this week cant seem to get to the bottom of this sick of feeling crap . Regards Kop

Cheers KOP I have never felt so bad for so long ever but begining to improve and as you know self employed there is no back up. Chking

 

[WC1]

Bump this

 

[superreg]

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 to heat the mains water into my flat?

I don't really understand what the mechanism is.

 

[WC1]

I believe it's essentially a heat exchanger. Communal hot water is used to heat domestic hot water.

 

[Knappers]

I miss doing commercial work, I remember the first boiler that I serviced by suiting up and walking into with a broom to clean the chamber and circulating pumps that you lift into place with an engine hoist - proper work!

 

[alclark]

I'm just curious really. I did do a quick calculation based on 1500 apartments with the same heat loss and DHW requirements, plus a rough loss through pipework and it was like you say megawatts. I did have a quick Google on size of pipes required to carry this power but wasnt very successful. Like I said my experience is only on domestic properties, I would love to experience larger systems and definitely want to gain experience with commercial and industrial oil fired appliances. I'm not gas trained, oil is all we ever did.

they break it down fairly well here - full list of HIUs available