Recent content by JohnH74

  1. J

    3rd system in 12 years

    Hi Picasso, It is an EcoTec Plus 637, fitted at same time
  2. J

    3rd system in 12 years

    I have spoken to them a few times and all they say is "it is quite old and we don't build them with internal stuff anymore"(I guess for this reason). I am not sure what the warranty period is. I bought it in 2009. A new one will be around £1200 If the internal phe is knackered, how would...
  3. J

    3rd system in 12 years

    The only way I have ever had a need to top up the pressure was via the flexible hose tap that fed into the expansion vessel. I used to have to do this all the time as it was losing 1bar every month ( I assumed there was a small leak somewhere). For a few years, I didn't have to do anything and...
  4. J

    3rd system in 12 years

    Yes, that looks like it. It is a sealed system with the only feed in being the cold water which goes's in to be heated. When we turn this feed off, there is no water available through the hot taps but the pressure does drop in the expansion vessel. (when I say no water, it trickles out basically...
  5. J

    3rd system in 12 years

    It is over 3 bar all the time. I switched off the boiler (to remove the only heat source) this morning. Came home to find that water was still pouring out like an open tap (just cold this time) Only time water pressure drops is when we completely switch off the water Does this make a difference...
  6. J

    3rd system in 12 years

    Its a good question Muggles.... I have had 2 heat engineers out who couldn't understand why it was leaking (one couldn't even understand how the system worked) We have disconnected the expansion vessel from the main feed and it still happens. It only stops when stopcock is off. Last plumber has...
  7. J

    3rd system in 12 years

    Ha Ha Roger, I do remember BB getting some abuse. To be fair it was probably a classic case of a little bit of knowledge in uneducated hands. My installer also thought it was a good idea. What would you opt for? Just had a quote of £4400 for installation of Worcester 550 CDI Highflow combi or...
  8. J

    3rd system in 12 years

    Thanks Dan, I wasn't contemplating a refurbed model. How old is it and how much use has it had? Not bothered about cosmetic issues but need it to work. Ours is currently a sealed unit as no space for header tank (if that is required) I am thinking the biggest cost of fitting another thermal...
  9. J

    3rd system in 12 years

    OK, I last posted in here in 2009 with guidance given on a new system. https://www.diynot.com/diy/threads/thermal-store-heat-bank-or-two-combis.170502/ At the time I was running 2 combi's twinned to supply whole house. In the 2009 post I was looking for guidance into a replacement system as...
  10. J

    Thermal Store/Heat Bank or Two Combi's?

    This is funny... :o BigBurner, Gas4You and DP certainly make a dull topic (to me anyway as I deal in cars) more fun to read about. unfortunatly haven't got time to read all the posts to find out what the history is between each of you or find out which one to believe, as you all sound...
  11. J

    Thermal Store/Heat Bank or Two Combi's?

    I do not proclaim to be an expert (in fact I am a rank amatuer at best), but our current 2 combi's are joined together to provide all the DHW for the entire house. They are T'd together just underneath the boilers and whenever a tap/shower/bath is turned on, both boilers fire up. The...
  12. J

    Thermal Store/Heat Bank or Two Combi's?

    Thanks for the advise. The current Ideal boilers have had PCB replacements already, most valves replaced but the heat exchangers are knackered. One has been canibalised by a plumber to get the other one working. They have been leaking over a few years as the service contract I had on them...
  13. J

    Thermal Store/Heat Bank or Two Combi's?

    I currently am running Two Ideal Isar Condensing Combi boilers (5 years old) One is completely broken, the other is on the way out. They run independantly for C/H on 2 zones but are T'd together for DHW (due to mains water pressure (6bar) and output requirement). I need to fix/upgrade my...
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