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Last seen: Aug 26, 2026
Lower pump speed = less flow = lower heat transfer. Speed 2 - 20lps at DT5 = 7kW Speed 4 - 30lps at DT5 = 10.5kW Also the ASHPO will have minimu...
Unfortunately it seems to be oversized. I can answer to you points as follows: 1) I would not recommend this unless you are sure you will check that...
@jamespa Yes, it is a balance of transfer using all components of the system so the flow, curve, plate exchange, expansion control and evaporator fan ...
@jamespa sorry James, yes larger surface area, messing with the DT. also this allows even lower running temperature, technically you could over size t...
@johnbroome if it is not the pressure in the expansion vessel then just look for a slow leak somewhere, top up as needed.
@jamespa oh this is very good results on your system, yes, its just for fun and in house training but I am experimenting a few things. 1) I...
@johnbroome `yes, worth checking bladder in expansion vessel for sure.
@johnbroome perhaps, does it rise in pressure when heated and then drop when off?
can you see here it not like a set of steps every 20 mins, it runs flat for 2 or 3 hrs. I also currently have a Vaillant that is running 808hrs for ...
Please see attached graph from 8.5kW Ecodan serving a 244m2 hose new build 2025. see how the return flow is steady. This is dissipating it heat so i...
Great this is open loop so surely the heating should remain on constantly? Or until it hits the target temp from the tcc? Looking at your graph yo...
So hear I am trying to explain there are several reasons the ASHP can pause, UFH says stop so it pauses, ASHP flow DT overshoot so the ASHP can no lon...
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Degrees of Separation
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