Evening all

Is there a way of being able to put the cop data from the install manual into emoncms as a reference line to show where my actual cop is sitting. So I know it will just be a straight line but want to be able to move it depending how I adjust my curve through the heating season.

Thanks all

Thinking off of the top of my head, here are some ideas. No idea if they will work.

**1)** If you just want a straight line, then create a Virtual Feed with the following process steps.

*This is perhaps closest to what you asked for, but is maybe not what you actually need.*

Trouble is, COP will change with both ambient temperature and flow temperature. It will **not** â€śjust be a straight lineâ€ť. If youâ€™re using weather compensation, then one is derived from the other (via curve setting) but you need some kind of formula or lookup to get the COP for a given temperature. If you can figure this out from the manual, then a Virtual Feed that takes ambient temperature as the Source feed and then does maths to estimate the COP.

What COP data does your install manual have?

**2)** The â€śMMSPHeatPumpâ€ť app can show â€śnominal efficienciesâ€ť for the heat pump, though itâ€™s a little fiddly getting the data input into it. @MyForest explains how to it in this post and following ones. This basically does the calculations I described for solution #1.

*This will be the most accurate representation of manufacturers COP, but hardest to implement if someone hasnâ€™t already done it. Iâ€™d be happy to help with this if youâ€™d like.*

**3)** The â€śMyHeatpumpâ€ť app can simulate heat ouput using carnot equation. Just need to fiddle with the â€śHeatpump factorâ€ť until the chart matches numbers from manufacturerâ€™s manual.

*Not exactly what you asked for, but the easiest way to visualise actual vs expected performance.*