Should I upgrade central heating pump?

[drives]

Proportional Pressure (PP) setting "C" seems to fit the requirements well.

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Ah right…is there any benefit to using PP versus CS out of interest? I can see that there does seem to be a marginal energy saving

Edit- sorry I can see you have already answered the above query. Missed it. I’ve now put it at the PP setting. Thanks again for all your advice!

 

[Johntheo5]

There's no saving if you are running the heating system as you were when you took the readings at CS2. But (relatively) very big savings if your heating demand falls to a level where you only require say 1/2 the original flowrate. CS2 will then run with a head of 5.95M to give that reduced flow and require ~ 28W but if c/o to PP3 the flow will fall a little below "1/2" at a 3.8M head but the TRVs will then open up a little and the final PP readings shou;ld be ~ 4.0M and require only 19W. Also the pump should be whisper quiet at the reduced RPM.
My pump runs between a max of ~ 22/24W and a minimum of 14/16W.