So two baths at 100 litres/min. That is some cold water main there. Those are few and far between. Next....
About 27 litres/min hot only. Most home only get 30 litres./min, so it is well in there. Next....
Making point, and new appliance hitting the UK. Some idiot on this thread is say a cheapo 100 litre £100n cheap cylinder can do two bathrooms and power showers and all that. Boy we really get them here.
Two combi's is two of them rather than one or three.
More babble.
Rinnai are top notch. They even a remote control to set the temps. And one that goes in the shower so you can set the temp in there and no one interferes. Brill eh?
What arae would you be referring to?
Power tool have no connection wit multi-points. You are very confused and should shave that mouse off your lip.
The Takagi condensing multi-points, not available in the UK (yet) are "very" efficient, and can return around 38 litres/min. Instant water heating has become the norm in Japan now. It is a case of use low energy and store lots of hot water taking up space, or use a lot of energy all at once, suing most of the energy available down your gas pipe. They also developed multi-points that can be installed outside to save space too.
The T-H1 at over 95% efficient and over 30 litres/min flowrate.
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- The so-called 95% efficient is measured on what system? Presumably a U.S. one? There's an asterisk against the number and they do not say what the measurement method is. The specs seem to miss out on heat output to water so one can't even see the story from that.
- If it's the same one as is used in the UK, then I find it very hard to believe that it is achieving 95% when everything here is achieving
90-91%. If it's the continental European system then the range is normally in the 106-109% range, and this would be pretty poor.
- Looking at the internal design, the thing has a secondary heat exchanger and upfiring burner. Hardly leading edge, is it?
- The NG input is 199,000 BTU in deprecated units, or 58kW. This is virtually the entire output from a domestic supply, leaving no spare capacity for anything else unless a commercial supply is installed.
- Your claim that it delivers 38lpm is only under the best possible conditions. This is equivalent to 10 U.S. gallons/min, and from the graph, this is only achieved for water temperature of 60F (15.5C) in and 95F (35C) out (hardly hot water is it?) or 70F (21C) in and 105F (
41C) out (tepid). If you look at the rate for a more realistic figure using the UK defacto standard of dT=35C (8C to 43C) (46F to
109F)then the output is at around 6 US gpm or 23lpm which is not impressive at all.
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