I’m very new to Open Energy Monitor. A few weeks ago I installed an emonPI to monitor whole house + PV energy, and in the utility room we have an emonTX which I’m setting up to monitor our heat pump.
I haven’t managed to get everything working as i want yet but am making progress.
Our heat pump is an ASHP, Nibe F2040, with a SMO20 controller.
I’m wondering what possibilities there might be for connecting the OEM hardware directly to the SMO20 heat pump controller.
The installation manual for the SMO20 is here:
Down on page 23 in Chapter 5 there are some instructions of how to connect external devices to the SMO20. One of the options is to turn on ‘luxury hot water mode’ based on an external signal.
I’m wondering if it would be possible to get the OEM system to trigger the ‘luxury’ mode when we have excess solar energy production. I wonder if this would better than buying a solar diverter which would use the immersion element rather than the heat pump, so may be less efficient.
I can’t find anyone who has done this with a Nibe SMO20 on the forum, but perhaps there is someone who has done something similar with another heat pump.