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Last seen: Jan 14, 2025
@crimson if what you have told us about the pipework is correct, then the high number (code 9) should match the temperature on the pipe coming from ...
yes 3 bar is 30m but we're not up that high (Fortunately!) 13kw at DT5 = 37l/min. 2200 kh/g (annoying grant units). Mag one graphs, about 0.8 bar = ...
@derek-m leaving aside the efficiency debate which we've done to death. have you ever seen system discussed on here where there a buffer tank thermis...
@jamespa when I read up on this way back, before being convinced that a buffer was totally unnecessary, I was pretty sure I learned that some heat pum...
possible. maybe. but doesn't remove the fact that the mag one is a socking great anchor on the system. This is normal if the hot water tank is al...
@rich congratulations. For doing this, and also on having the confidence in yourself to do this in winter. albeit you did check the forecast 😉
@crimson personally I doubt there is anything wrong with the LLH as a device(as a system design, yes, we discussed that to death). Its a metal cylinde...
the best thing I can suggest is to hire heacol (but says he is vastly overworked and there is only 1 of him after all) the next best thing is to fin...
did they check the flow rate on the primary side as reported on the grant controller, wherever that might be? what was that value? one option to pr...
@crimson I don't know what rating the ASHP circulation pump is but there is clear maths in grant's own spec sheets that says the Mag One will be takin...
@crimson the internal pump may have been turned down also. but the primary side is badly implemented , has low flow, and will never work properly with...
no problem. £500 consultancy fee to myself from your plumber / installer / grant.
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