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UK diy (uk.d-i-y) For the discussion of all topics related to diy (do-it-yourself) in the UK. All levels of experience and proficency are welcome to join in to ask questions or offer solutions. |
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Boiler controls/efficiency
It is that time of year...
I was a bit taken by surprise when someone recently suggested that condensing boilers work best at 65 deg. C. My thought was that it does not leave much room for DHW at 60deg. to avoid bacteria. My flow and return piping is insulated so there should not be much loss tank coil to boiler. The other question I have related to weather compensation. My system boiler has provision (not fitted) for this but no other arrangement for reducing the set temperature when running the underfloor heating. The manifolds have local thermal control valves but it seems daft running the boiler at 65 when 55 would be ample. Could I fit a suitable fixed resistor in place of the Weather compensation detector (assumed to be a thermistor of some sort)? This weekend is *move the by-pass valve* event! -- Tim Lamb |
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