House 125m2 good loft insulation and cavity walls done about 20 years ago in a mid 80s built house, so insulation ok but not brilliant. CB heating design 45c @ -2 currently using WDC of 40c @-3 and 28c@18c I’ve set a schedule of 23c from 7am-9.30 pm then 9.30pm-7am 18c with madoka control. At the moment pump is not coming on at night time and is only dropping 1-2 c over night! Data access is through MMI, the energy usage seems pretty accurate 82 kw for last week heating only but have no way of knowing if heat out put is correct! I find it really strange that whatever hot water usage we have its always 2-3 kw a day giving a cop of 1.5 - 2.5 . I’m also running modulation of 1 but finding what ever I change not making a lot of difference to cop which is for last week ranging from 2.7 - 3.7 average being 3 heating only. I’m reading a lot about the 9kw pump being a beast and maybe over sized for my house! I have a 20m2 fun lounge with atrium tagged onto the lounge which isn’t heated at the moment and would be fairly easy to put a big radiator in! By doing this I’m wondering if it would make the pump fit the hose better and we would be able to use the sun lounge on colder days with out costing a lot in heating costs. I’m reading people who seem to get decent cops from the 9kw unit have a large radiator output!
Appreciate any thoughts.
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