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  • FIRST POST
    • robatwork
    • By robatwork 8th Jul 17, 3:26 PM
    • 3,898Posts
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    robatwork
    Time for a new boiler (thread)
    • #1
    • 8th Jul 17, 3:26 PM
    Time for a new boiler (thread) 8th Jul 17 at 3:26 PM
    It's time to replace my Suprima 50 (complete with refurb PCB of course).

    I live in a very hard water area, and heating specialist #1 (having seen how sludgy my heating water is) has recommended a magnetic filter, plus chemical inhibitor, together with a Baxi ecoblue advance and new pump. I saw a few threads previously mention a combination or gravity filter - something I should consider?

    Also heard something about a government regulation regarding thermostatic radiator valves - that installers will insist on these being present come winter, or they won't install a new boiler. Is this right?
Page 1
    • dggar
    • By dggar 9th Jul 17, 9:33 AM
    • 537 Posts
    • 266 Thanks
    dggar
    • #2
    • 9th Jul 17, 9:33 AM
    • #2
    • 9th Jul 17, 9:33 AM
    It's time to replace my Suprima 50 (complete with refurb PCB of course).

    ...............

    Also heard something about a government regulation regarding thermostatic radiator valves - that installers will insist on these being present come winter, or they won't install a new boiler. Is this right?
    Originally posted by robatwork

    Do you have an official source for this? I thought the whole point of TRVs is you adjust them yourself for your own comfort.
    • Alex1983
    • By Alex1983 9th Jul 17, 9:48 AM
    • 427 Posts
    • 228 Thanks
    Alex1983
    • #3
    • 9th Jul 17, 9:48 AM
    • #3
    • 9th Jul 17, 9:48 AM
    I think it's part L building regs. Says you need trv's and room stats.
    • robatwork
    • By robatwork 9th Jul 17, 1:44 PM
    • 3,898 Posts
    • 4,224 Thanks
    robatwork
    • #4
    • 9th Jul 17, 1:44 PM
    • #4
    • 9th Jul 17, 1:44 PM
    Oh HE1 (heating eng 1) also gave me the option of a Megaflow system upgrade too. I had this in a previous residence and it's great having mains cold water at all the taps. I do realise this puts the pipes under a bit more stress as they are then working at 3 bar - is it worth the risk in your experience?

    Also please let me know if the Baxi is any good or other models I should look at around 13-19kW

    thanks!

    PS I couldn't find the legislation, but lots of recommendations as to why TRVs are a great idea.
    Last edited by robatwork; 09-07-2017 at 2:01 PM. Reason: PS
    • Alex1983
    • By Alex1983 9th Jul 17, 2:30 PM
    • 427 Posts
    • 228 Thanks
    Alex1983
    • #5
    • 9th Jul 17, 2:30 PM
    • #5
    • 9th Jul 17, 2:30 PM
    Unvented hot water is great and well worth the investment, mega flows are very good and come with, I think 25 year warranty.

    I wouldn't fit the baxi, they've made far too many bad boilers over the years for me to trust one in my own house but that's just my opinion. I fitted a vaillant 630 in my house a couple of years back, I think the vaillants are very good quality boilers with a long run of very reliable boilers. You'd get them from 11kw up to 37kw.

    Are you making the heating system sealed.

    Why are you changing the suprima they are very good realiable boilers, is it just the sludge if so get it flushed and filter fitted and leave as is.
    • robatwork
    • By robatwork 9th Jul 17, 8:42 PM
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    robatwork
    • #6
    • 9th Jul 17, 8:42 PM
    • #6
    • 9th Jul 17, 8:42 PM

    Are you making the heating system sealed.

    Why are you changing the suprima they are very good realiable boilers, is it just the sludge if so get it flushed and filter fitted and leave as is.
    Originally posted by Alex1983
    Thanks - and I am not sure if I am making the heating system sealed - if I go for the megaflow then I presume that's a yes, but it's not definite.

    The suprima just doesn't seem to stay lit for more than a few minutes - keeps going into flashing green mode which means
    "Boiler Temperature Control Satisfied". This happened yesterday when I put the heating on full to test it, and the rads weren't even warm. It's already had one refurb PCB. I guess it could just be the pump and rads are so slushed up the water isn't getting through quickly enough?

    The idea of TRVs in the bedrooms appeals to me - not sure how long they take to pay for themselves....
    • Alex1983
    • By Alex1983 9th Jul 17, 9:08 PM
    • 427 Posts
    • 228 Thanks
    Alex1983
    • #7
    • 9th Jul 17, 9:08 PM
    • #7
    • 9th Jul 17, 9:08 PM
    You wouldn't definitely have to have it pressurised if you have the mega flow, more common that they are but you could have it on a open vented system.

    Would be suspect of pump definitely.

    You probably would take a long time to see repayment on trv's but would make it more comfortable and controllable so I would. Have you got a room thermostat, you'll see better repayment on that if you haven't got one.
    • robatwork
    • By robatwork 9th Jul 17, 9:17 PM
    • 3,898 Posts
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    robatwork
    • #8
    • 9th Jul 17, 9:17 PM
    • #8
    • 9th Jul 17, 9:17 PM
    You probably would take a long time to see repayment on trv's but would make it more comfortable and controllable so I would. Have you got a room thermostat, you'll see better repayment on that if you haven't got one.
    Originally posted by Alex1983
    Pump was new less than 2 years ago, and no, just one thermostat in the hallway. Not familiar with the room thermostats - are they in addition to the TRVs or instead of? Seems overkill having both. Would they be in every room? Sounds like a major upgrade of the control panel and plenty of wiring....
    • Alex1983
    • By Alex1983 9th Jul 17, 9:28 PM
    • 427 Posts
    • 228 Thanks
    Alex1983
    • #9
    • 9th Jul 17, 9:28 PM
    • #9
    • 9th Jul 17, 9:28 PM
    No you have the one in the hallway that's fine.

    If the system is that dirty it may well of done the pump again. Changing the boiler won't necessarily cure your problems, you will need it flushed regardless.
    • southcoastrgi
    • By southcoastrgi 9th Jul 17, 10:43 PM
    • 5,203 Posts
    • 3,019 Thanks
    southcoastrgi
    Personally I like Baxi & I'm not keen on Vailliant, you can buy a cheaper unvented cylinder than a megaflow with the same 25 yr warentee (subject to a annual service), a room stat is required as a boiler interlock, trv's are highly recommended & make a lot of sense, the system def sounds like it needs flushing
    I'm only here while I wait for Corrie to start.

    You get no BS from me & if I think you are wrong I WILL tell you.
    • robatwork
    • By robatwork 10th Jul 17, 9:11 PM
    • 3,898 Posts
    • 4,224 Thanks
    robatwork
    Personally I like Baxi & I'm not keen on Vailliant, you can buy a cheaper unvented cylinder than a megaflow with the same 25 yr warentee (subject to a annual service), a room stat is required as a boiler interlock, trv's are highly recommended & make a lot of sense, the system def sounds like it needs flushing
    Originally posted by southcoastrgi
    I trust your judgement - what cylinder would you put in your own house that's a megaflow equivalent?

    ta
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