ᐅ Air-to-Water Heat Pump: Current Consumption and Data

This morning, the outside temperature is 1.5°C (35°F), and the house has cooled down by 0.5°C (1°F), but 21.5°C (71°F) is still acceptable.

Due to the low outside temperature, despite the reduced heating curve, the target room temperature is set at 23.7°C (75°F), and the screed has cooled down overnight to 22.0°C (72°F). As a result, the heating has just turned on. However, at the same time, the sun is coming around the corner, so I’m curious which will prevail 😀

This morning we had -0.6°C (30.9°F). As you can see, it’s similar to your situation. Like in the past few days, I’ve been manually turning on the heating once a day, starting when the photovoltaic system starts producing power. The rest is taken care of by the solar output. When the heating cycle ends, I switch on the hot water, and that’s it.

Zaba12 schrieb:

I have been manually controlling the heating every day like the past few days.

You don’t want to keep doing that permanently, do you?

It’s fine to do it just for fun to see how much you can reduce consumption. But you wouldn’t want to manually turn the heating and/or hot water on and off all the time.

Zaba12 schrieb:

This morning we had -0.6°C (30.9°F). You can see it’s the same here as with you. Like the past few days, I manually turned on the heating once a day, starting when the photovoltaic system begins producing energy. The rest is covered by solar yield. Once the heating cycle is finished, I turn on the domestic hot water, and that’s it.

Wouldn’t it make sense to use a lowered heating curve with a daily boost during the transition period? Then the heat pump would automatically warm up the screed and prepare hot water at the “right” time, while staying off during the night. This manual switching back and forth is not very comfortable...

face26 schrieb:

You’re not planning to keep doing that permanently, right?

Doing it manually just for fun to see how much you can reduce energy consumption is fine. But you don’t want to be manually turning the heating and/or hot water on and off all the time.

Of course not. I’m only doing it manually right now because I’m working from home and haven’t tested which hysteresis setting works best for heating operation to reliably have the heating start at 12:00. For hot water, 7°C (13°F) hysteresis basically works, so the hot water should come on around 14:00. The heating curve still fits well at 25/21/0.

The goal is really just to increase self-sufficiency 😎

Zaba12 schrieb:

Of course not. I’m just doing it manually right now because I’m working from home...

What else is there to do all day while working from home?? 😉 :p