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ASHP - Am I so unlucky?
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<blockquote data-quote="johnb2713" data-source="post: 544910" data-attributes="member: 35153"><p>Mitsubishi ECODAN air-water heatpumps run at 45 degC can elevate to 65 degC for hot water storage safety cycle.</p><p>I reduce our condensing boiler flow temperature down to 35 deg C last winter to trial operation at low flow temperatures. The house maintained the room temperatures without issue, the rads all standard sizes, conservatory underfloor wet heating. Turning the flow up to 45 deg C resulted in a faster response as expected but nothing else changed. Our house does have good insulation, it was built in 1990 by a very reputable builder who was known for quality work.</p></blockquote><p></p>
[QUOTE="johnb2713, post: 544910, member: 35153"] Mitsubishi ECODAN air-water heatpumps run at 45 degC can elevate to 65 degC for hot water storage safety cycle. I reduce our condensing boiler flow temperature down to 35 deg C last winter to trial operation at low flow temperatures. The house maintained the room temperatures without issue, the rads all standard sizes, conservatory underfloor wet heating. Turning the flow up to 45 deg C resulted in a faster response as expected but nothing else changed. Our house does have good insulation, it was built in 1990 by a very reputable builder who was known for quality work. [/QUOTE]
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