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Thread: Evohome Opentherm Boiler decision and set up

  1. #41
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    Quote Originally Posted by G4RHL View Post
    I am wary of any warranty. Many long term warranties, if you read the fine print, are only covering the bits that are unlikely to fail. Then you have the likes of one well installer offering wonderful warranties, and expensive installations, but you have to use them for servicing every year and they are not cheap. There is probably enough said in these pages to persuade you to go Intergas!
    Wow this thread has moved on! I can't thank you chaps enough, even not fully understanding every element of the conversation, it has helped me massively - i now feel confident in making an informed decision. I must admit i have wavered and considered a standard TPI approach instead of OT, given the conversations i've had with various plumbers. Given that I have the Honeywell I think, why the hell shouldn't i have a fully optimised system... You make a good point G4 & blowlamp regards the IG. I completely get the warranty thing too - it seems which ever way i go i am taking a risk, and i gather the parts for the IG are much cheaper in comparison.

    Can anyone answer if a replacement pump for the IG can be bought off the shelf or do i need a particular fitting?

  2. #42
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    Quote Originally Posted by 1animal1 View Post
    Wow this thread has moved on! I can't thank you chaps enough, even not fully understanding every element of the conversation, it has helped me massively - i now feel confident in making an informed decision. I must admit i have wavered and considered a standard TPI approach instead of OT, given the conversations i've had with various plumbers. Given that I have the Honeywell I think, why the hell shouldn't i have a fully optimised system... You make a good point G4 & blowlamp regards the IG. I completely get the warranty thing too - it seems which ever way i go i am taking a risk, and i gather the parts for the IG are much cheaper in comparison.

    Can anyone answer if a replacement pump for the IG can be bought off the shelf or do i need a particular fitting
    ?



    I think Intergas spares can be had from Plumb Centre and the like, but any decent Intergas installer should carry a good range of parts.

    I'd say that rather than worry about the pump failing, rejoice in having a boiler with no diverter valve, rubber hoses, or any of the other stuff that commonly fails on modern equipment.

    I'd get another Intergas, because, engineering wise, I can see what is inherently right about them - a case of form follows function, as far as I'm concerned. Failing an Intergas I think I would plump for an ATAG.


    Martin.

  3. #43
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    I think after the mention of Atag at the start of this post and the reviews, that is my first option. I am just not prepared to change heating engineers to get one.... The Intergas will be his first sight. This is of course depending on what quote I get of course. Such a shame Atag won't supply without accreditation, with the warranty.... Thinking of asking my chap to contact them to price up and see what warranty they will give
    Last edited by 1animal1; 30th January 2018 at 11:29 PM.

  4. #44
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    Quote Originally Posted by 1animal1 View Post
    I think after the mention of Atag at the start of this post and the reviews, that is my first option. I am just not prepared to change heating engineers to get one.... The Intergas will be his first sight. This is of course depending on what quote I get of course. Such a shame Atag won't supply without accreditation, with the warranty.... Thinking of asking my chap to contact them to price up and see what warranty they will give
    FWiW, most boiler manufacturers will only give an extended warranty if the boiler is installed by one of their accredited installers.

  5. #45
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    Quote Originally Posted by HenGus View Post
    most boiler manufacturers will only give an extended warranty if the boiler is installed by one of their accredited installers.
    Not just installed by - annually serviced by too.

  6. #46
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    Quote Originally Posted by paulockenden View Post
    Not just installed by - annually serviced by too.
    The Atag warranty doesn't actually say that. It states:

    Quote: To maintain any product warranty, your appliance must have an annual service, carried out by a Gas Safe Registered (or Register of Gas Installers Ireland) engineer. Unquote

    That said, I intend to use my accreditted installer.

  7. #47
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    I was going to go intergas for my OT iS S plan install until they told both myself and my preferred installer that it couldnít cope with multizones. It seems solutions have now been found, but with a leaking boiler I couldnít wait too long.

    I went the Atag route which my preferred installer tried to get accredited for, but they seemingly have targets and areas etc which werenít going to suit him as mainly an intergas specialist.

    I found another excellent installer, who does Atag, but maybe an extra £500 overall. Partly cost of boiler and also his labour charges being higher. Main reason for Atag is that it does what itís supposed to and the 10y warranty.

    I found the biggest saving for me was simply installing evo to control rads - with the old boiler it saved 20% overnight as we were heating less rooms.

    I would say with OT gas usage is slightly higher than without, but I have both a bigger boiler and the gas fireplace has also been on a bit. The bugbear for me is Evo asking the boiler to run at 70 when there is no need (something Iím hoping they will add settings to control). For me the biggest advantages are thermal control via the app and it is excellent at maintaining set temps.

    Would I bother in a small house? No. In a larger house? Yes!

  8. #48
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    Quote Originally Posted by fergie View Post
    I was going to go intergas for my OT iS S plan install until they told both myself and my preferred installer that it couldnít cope with multizones. It seems solutions have now been found, but with a leaking boiler I couldnít wait too long.
    I always understood the Intergas boiler had no problems with lots of zones. Have I missed something?

  9. #49
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    Evohome's narrow modulation band under OpenTherm control was mistakenly reported as a fault with Intergas boilers. It just turned out that the odds for a multi-zone Evohome setup requesting full boiler output were underestimated.

    Martin.

  10. #50
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    I may be putting 2 and 2 together and getting 22, but I believe the Ďintergas fixí is to wire the OT into CH only and the water supply via a BD91 to the combi side. This way the boiler knows what itís heating and / or CH max can be set on the boiler.

    My installer thinks this would work on the Atag too so may explore it at service time, but would prefer Honeywell to add control via evohome!

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