"Christian McArdle" wrote in message
. net...

Megaflo HE CL210 Indirect Cylinders

My parents have a Megaflo. It is excellent.
210 litres is seriously large, enough to run
two full baths simultaneously even with the
boiler off. Are you sure you need that much?

The size could be dropped by 40% if a quick recovery coil and a hot water
priority system is used. The Vaillant is quite powerful and should re-heat
very quickly. It would be re-heating as water is being drawn-off, in effect
making the cylinder larger.

A better method is to have a hot water priority system, have an extra high
limit stat set to 90-95C and a flow switch on the hot pipe that serves only
the baths and showers, which are the largest hot water users. When any bath
or shower is switched on the boiler automatically fires, by-passing the run
stat set to 55C and controlled by the high limit stat, sending heat to the
cylinder. When the bath or shower taps are off it reverts back to the run
stat of 55C. This is a cheap and very effective method by using the full
power of the boiler available using only an extra flow switch and cylinder
stat. The boiler power is there so use it. It can be sued to reduce the
cost of other equipment, reduce space taken up and reduce costs. This can
be implemented on virtually any system.



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