Quote:
Originally Posted by COLVERT
Quote by Harry.
Yesterday evening I got the bright idea to reset the boiler to factory defaults, followed by setting the system to call for HW. For the very first time it did what it had been asked to do. Just the once so far, I will try it again as more water is used, before calling it a fix and boxing it all up.
Keep us posted Harry. Hoping it carries on working for you.---
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Two more water heating sessions and it was perfect
Though I found the boiler was wastefully cycling a bit, when just heating water, so I have delved into the boiler's settings to adjust it so it reduces it Kw output when just heating water. The boiler now has almost 100 operation configuration options which can be set up to optimise its behaviour
Before I added this fancy system, all the boiler knew was that there was an heat demand, it had no idea whether the demand was for CH or HW, or even how big the demand might be. Now it knows the house HW cylinder temperatures and how cold it is outside and can fine tune its response - well that's the theory.
I noticed the difference straight away on the CH, as soon as I had the system working on CH - instead of the feeling the room warm up and cool down, as the heating kicked in and out, radiators got hot, then cold, now they just get warm-ish and remain warmish.
Gone is the tick, tick, tick as the pipes heat up and cool, apart from when the the temperature is first turned up.
Very pleased now with the result! I managed to get the two units needed, at much less than the original cost - new items, but older stock - replaced by the same spec. items with network/phone control, which I just don't need.
It is supposed to save around 6% on the gas bills and some wear and tear on the boiler, so parts cost recovered in say around three years for me. Of course a much longer payback time for anyone paying full price and paying for the install. It is a very much simpler system to install than using clocks and thermostats, which I have just ripped out.