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    Is there a maximum 15 mm pipe length from the 22 mm ring?

    kg/s ?
  2. I

    Parallel two-pipe layout?

    Well my drone's out of commission and the pipework is under various floorbaoards, wardrobes, and even a shower, so I'll try to describe it differently. Ignoring the twists and turns of the real world layout, the pipework comes down to: about 3m of 22mm dual-pipe from the boiler. It splits into...
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    Parallel two-pipe layout?

    I have inherited (not literally) a two-pipe central heating system which has two branches starting near the boiler which then recombine into a single pair of pipes feeding several more radiators. I suspect that an original 15mm run around the entire upstairs (with drops to radiators downstairs)...
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    Would you buy a Worcester 24i/28i Junior?

    24kW, adequate shower. Not great but probably all you need with most showers. You will probably notice the difference in winter. 28kW slightly better, but to be honest the difference isn't massive. Both a massively over-sized for a flat and even for your average 3-bed semi with reasonable...
  5. I

    Electric Showers....

    10-12kW gives a shower that is ... crap. Sorry, no other word for it. Crap in summer and absolutely useless in winter. I haven't seen more powerful ones but maybe they exist.
  6. I

    Worcster Si or CDi, that is the question

    Fancier modulating pump. The major marketing points they use to distinguish the two ranges are that the CDi has a "modulating pump" and is "fulliy condensing in hot water mode". The modulating pump is true and certainly uses less electricity than the non-modulating pump but it is still a...
  7. I

    Will higer DHW flow give more poweful shower

    If the boiler is the limiting factor then you will get better flow with a more powerful boiler. The symptom of the shower struggling in mid to late winter is a good sign that the boiler is limiting the available flow rate rather than just the pipes or inadequate mains pressure. Strangely...
  8. I

    British Gas water pipe cover

    I give it another 5 years before BG and others are paying out the way the banks are currently paying out for mis-sold insurance.
  9. I

    Considering Boiler upgrade

    A standard gas boiler should also be serviced each year, although many people don't. Storage combis generally don't include an immersion heater. This is a feature that can be found with separate cylinders although it is much less common these days. Maybe someone can suggest one. Also, the...
  10. I

    best room thermostat

    Garbage. Boilers "modulate down" to maintain exactly the same (hot) radiators even though they don't require full power to maintain that temperature. Without special controls (sometimes referred to as weather compensation controls, although that is not strictly accurate because they don't need...
  11. I

    Sludged up boiler

    I sense catch .... Probably a free boiler but you have to pay (over the odds) for the labour ;)
  12. I

    is system pump big enough

    You know how to size the pipework, right? Well size it and see if the pump is big enough. If not, size it a bit bigger :mrgreen: A modern system boiler pump will pump an awful long way in good sized pipes.
  13. I

    How long do Cylinders last?

    The cylinder will last forever, but what's inside might not.
  14. I

    Good news for BG customers............

    I tried BG for a while. Their customer so-called service was pretty bad, and their way of dealing with escalated complaints was just awful. Mostly just ticking off boxes to claim your complaint was closed rather than actually trying to do anything about it. I think this is what the fine was...
  15. I

    The $64'000 dollar question

    No cold water, Mr Asbestos butt?
  16. I

    Which boiler...?

    So a dynamic flow rate is a static flow rate, but measured upstairs? :shock: ? You have somehow confused a dynamic pressure measurement, which is actually useful in this context, with a dynamic flow rate which is something else entirely and not relevant here. A dynamic pressure measurement...
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    Salus RT500RF Programmable Room Stat Questions

    The heating may come on during the night, but only if the temperature drops below 10C. I'd be surprised if that is happening, very surprised if it happens in July! No clue. Is the actual heating coming on during the night, or just the boiler firing? For how long does it stay on? What...
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    Will this boiler do ?

    Yeah, facile remark from Agile. A combi works perfectly well in a house with multiple people and the hot water never runs out as it does with a cylinder. The big proviso is that you shouldn't expect to be using multiple hot water sources at the same time. So you can run a shower for an hour...
  19. I

    Boiler not efficient

    Got that, Carol? :mrgreen: Who let the inmates out tonight? Five completely different answers already and some of them clearly didn't even read the question. :roll: So, here's answer #6! Turn the boiler stat down. 60C is a good starting point. If your heating works OK then smile...
  20. I

    Mains Hot, Gravity Cold

    Or go back to whoever fitted the system and tell them to fix it ;) This is a cheap bodge installation. You won't get a good shower off it. Stopping the hot water pressure will give you a terrible low power shower. You could always fit a pumped shower to get the pressure back, but it might be...
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