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  1. siricosm

    Weather compensation for cylinder?

    Does anyone know of a weather compensation unit that can be fitted to a cylinder? I have an Ideal Logic Max H24 which heats a thermal store. The boiler can take an Ideal weather compensation unit to raise the target flow temperature as the outside temperature drops, but the store temperature...
  2. siricosm

    Boiler replacement in Norwich

    I need someone to replace my boiler, I am thinking to get an Intergas HRE 24 SB. Our current boiler (and old Ideal) is in the kitchen, and we would like to relocate it to the laundry room or loft, so a new gas line needs to be run. I would prefer someone local in Norwich that can also do the...
    • siricosm
    • Thread
    • boiler replacement
    • Replies: 0
    • Forum: Boilers
  3. siricosm

    Would you replace an old Ideal FF360?

    I have an old FF360 I was thinking about replacing, but in the end it just does not seem economical. It is rated at 78% efficient, so I suppose a new boiler might be able to shave 10-15% off the gas bill, but would that realistically pay for itself? It looks like parts for the Ideal are still...
  4. siricosm

    Running a combi without hot water.

    It seems combi boilers are now cheaper than regular or system boilers, in some cases by quite a bit. I suppose they make a lot more of them and it is just economics of scale. Is it possible to install a combi and just leave the hot water disconnected, and/or turn it off? I am pretty sure you...
  5. siricosm

    T50 on new install?

    I am about to replace my radiators (and piping) and doing the heat loss calculations. I am wondering if the T50 rating on radiators is still reasonable. Wouldn't T40 be more efficient with today's boilers, or would the difference be hardly noticeably? I guess T40 would also be at the upper...
  6. siricosm

    Programmable TRVs for cast iron radiators

    Does anyone know of programmable TRVs that would not look out of place on period cast iron radiators? Even finding regular TRVs is tricky, all the ones that "look good" seem to be very expensive and very good quality.
  7. siricosm

    Leveling a cylinder

    I am installing a 300 liter stainless cylinder, and it is not quite level. The floor is level, but there is a very small tilt on the casing at the bottom, maybe 1/4 inch, but enough to make it look dodgy against the plumb wall. The cylinder does not have metal feet or anything, it appears to...
  8. siricosm

    How to connect to this fitting?

    Here is a pic of a fitting on a duplex stainless buffer cylinder. The thread looks to be 1" BSPP. Any idea of the best way to connect to this? Is there some kind of gasket/o-ring/olive meant for these? or is it best to use a tapered fitting with pipe with dope and hemp?
  9. siricosm

    Fittings for stainless cylinder

    I am installing a stainless cylinder to be used as a central heating buffer that looks to have 1" female tapered fittings. I was going to thread in brass fittings, but was thinking about galvanic corrosion since dissimilar metals are involved. The water will have inhibitor. The tank is duplex...
  10. siricosm

    Cylinder for DIY thermal store

    I did look at this one: 2060x550 Stainless Steel Buffer Vessel (290 Litre) - https://shop.newarkcoppercylinder.co.uk/2060x550-stainless-steel-buffer-vessel Again about twice the price of the Telford with no immersion boss.
  11. siricosm

    Cylinder for DIY thermal store

    So after looking around a while for a plain 300 liter stainless cylinder with enough connections I find: 1) Gledhill flexible buffer store 2) Telford standard buffer (1/2 price of the Gledhill, with 3K immersion, dual stat, and TPRV included) 3) Joule buffer (4x the Telford price at Plumbcity...
  12. siricosm

    Is copper pipe all the same?

    I am about to replace the microbore heating system in my house, and need to buy all the copper pipe and fittings. In Canada, copper pipe came in different grades, and if you wanted top quality you could buy the thicker "L" type pipe, rather than the thinner "M" that is mostly used. Here in the...
  13. siricosm

    Is a flow switch really necessary?

    I am contemplating installing a heat bank type thermal store, with an external plate exchanger for DHW. The pump on the primary (tank) side of the plate exchanger is usually controlled by a flow switch on the DHW side. I am thinking to use a modulating pump (Grunfos apha2) and a thermal...
  14. siricosm

    Cylinder for DIY thermal store

    I will definitely be in touch with building control. I have always had good experiences in the past, and I have found that if your work is neat and correctly done, they are usually very agreeable. I am still unsure if a sealed low pressure (2 bar) store with an external plate exchanger requires...
  15. siricosm

    Cylinder for DIY thermal store

    Thanks, I will try to get a quote from McDonald. How did you find out how big the DHW coil was in the Gledhill? and which model has the 3.7 sq. m. coil? Most of the manufacturers don't seem to list the coil sizes or even the ratings.
  16. siricosm

    Cylinder for DIY thermal store

    Does that mean you can't use a combi in Norwich?
  17. siricosm

    Cylinder for DIY thermal store

    Aside from being overpriced, most commercial thermal stores are not designed to deliver 12lpm of hot water while running at 60C. The DHW coils are too small. There are a few exception like the steel OEG store I linked above, I lived with that one for a few years in my previous house and it...
  18. siricosm

    Cylinder for DIY thermal store

    Typically the coils are too small (1-2 m^2 surface area), even in most commercial thermal stores, which is why people think stores need to run at 80C to work. I plan on running mine at 60C. I also live in Norwich, which has very hard water and I am worried a bit about internal coils scaling as...
  19. siricosm

    Cylinder for DIY thermal store

    Yes, I have read a lot of complaints about them, which is why I am looking for other makes.
  20. siricosm

    Cylinder for DIY thermal store

    In addition to mains pressure hot water, I would like to have heat flowing to the radiators whether the boiler is running or not. My heating loop will use a modulating pump (Grunfos alpha 2) and TRVs all round.
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