Vitocal 222-S and photovoltaic

[Laurent]

Hello,

I do not speak German so here is my message in English, I hope you can help me.

I have a Vitocal 222-S AWT 221.A04 heat pump (year 2017).

I have a photovoltaic installation with Enphase microinverters.

I want to optimize the use of surplus electricity produced by photovoltaics.

In the heat pump user manual there is a “Photovoltaic parameter group” part (7E00 to 7E25), and a “Smart grid parameter group” part (7E80 to 7E93).

I saw that there is a Viessmann energy meter to be connected by modbus to the heat pump. Is this the only solution for my heat pump model or are there other solutions?

I saw that the Viessmann modbus energy meter exists in 2 versions. Single-phase and Three-phase.

At home my electrical installation is completely single-phase (usual in France).

Do I absolutely have to choose the Single-phase energy meter model, or will the three-phase one also work even in a single-phase electrical installation? Indeed, currently my electrical installation consumes at certain times up to 60A (including 32A for charging my electric car). However, the single-phase meter seems to support only 32A, while the three-phase model supports 60A.

[thorsten_]

What is the peak power of your PV?

[Laurent]

My PV is 9 KWp (24 panels of 375Wp), with Enpahse IQ7A micro inverter and Enphase Envoy S Metered gateway.

[thorsten_]

With 9 kWp you will anyhow consume every kWh in the Nov - Feb period. In Sept - Oct and Mar -April you can run the heat pump with the timer during day time. SG and Energy Meter is not really needed.

[Laurent]

Thank you for your advice but I want to be able to use my Heat pump (which also produce Domestic Heat Watter all the year) with my photovoltaic installation.

Does the use of Energy Metter (https://www.energie-zaehler.com/Modbus-Drehstromzaehler-65-A-direktmessend-MID-geeicht) is the only way or is there any other way ?

For example, with the Vitoconnect I already own?