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Tim Lamb[_2_]

In message , writes
On 03/11/2020 19:08, Harry Bloomfield wrote:
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Modern boiler have separate temperatures for CH to HW.
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Really? A combi may have this but are there any system boilers with it?
If so, how is it signalled?

I was thinking of cheating by making use of the weather compensation:-)

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Tim Lamb