So I fitted a mixer shower to replace the electric shower that attempted to set fire to our bathroom a month or so ago[1].
Heeding warnings about water flow rates etc due to much trawling of Google Groups and reading of FAQs I have ensured that as much of the hot run from the boiler to the shower is 22mm as can be and there are as many wide sweeping bends (as opposed to corners) as I can get away with.
The shower head also has nice wide holes and the pipe is fairly wide diameter. The shower is like standing under Niagra Falls compared to the old one and the water projects nicely from the head.
The problem is that the boiler cycles on/off - it is a modulating boiler, BTW. This doesn't seem to affect the shower much, the flow rate and temperature do fluctute a bit, but it isn't uncomfortable.
Now, I know the feed to the boiler is poor (15mm, for a start) and was assuming I would have to get this replaced anyway - my neighbour (a general builder) reckons I should get it tapped directly into house supply from the main, if possible. I shall consult a plumber, as this sounds like serious getting wet work...
Anyway, having the subject of limescale in/around the DHW heat exchanger is mentioned in a couple of articles. I'm worried about this as we live in a very hard water area. I'm wondering if there is anything I can do to ascertain A) if there is a problem and B) do something about it if there is? The boiler is probably 8 years old now. We had the entire CH de-limescaled and de-sludged a while ago and it made a hell of a difference, could this be a problem for DHW?
I'm going to get the boiler supply replaced anyway, just want to know if there is anything else that could be affecting it.
Well that was about 80 lines more that I'd hoped I'd have to write.
Thanks, any help would be greatly appreciated.