Hello everyone,
I have been living in our newly built single-family house since mid-2021 and installed a Roth ThermoAura 5kW heat pump with an 850-liter (225-gallon) thermal storage tank.
Lately, I have been focusing more on the settings and have made occasional adjustments. However, I suspect there is still room for further optimization. I have already heard that many people consider the thermal storage tank to be less practical since it handles both domestic hot water and heating. By now, I at least agree that the tank is much too large.
I am satisfied with the current indoor temperatures.
What are your thoughts on the thermal storage tank? So far, I have mainly heard negative opinions about it.
Currently, the heat pump cycles about 11 times a day for heating and 1–2 times for hot water.
Here are my current data from this morning (hot water preparation was just running):
I look forward to your feedback.
I have been living in our newly built single-family house since mid-2021 and installed a Roth ThermoAura 5kW heat pump with an 850-liter (225-gallon) thermal storage tank.
Lately, I have been focusing more on the settings and have made occasional adjustments. However, I suspect there is still room for further optimization. I have already heard that many people consider the thermal storage tank to be less practical since it handles both domestic hot water and heating. By now, I at least agree that the tank is much too large.
I am satisfied with the current indoor temperatures.
What are your thoughts on the thermal storage tank? So far, I have mainly heard negative opinions about it.
Currently, the heat pump cycles about 11 times a day for heating and 1–2 times for hot water.
Here are my current data from this morning (hot water preparation was just running):
I look forward to your feedback.
Hockey6 schrieb:
that I can’t get it warmer by adjusting the heating curve. Could I then increase the flow rate at the manifold for the bathroom? By raising the heating curve, the bathroom will definitely get warmer. Be aware: the rest of the house will also become warmer —> throttle back.
Increasing the flow rate only works up to a certain point. If the heating circuit in the bathroom is, for example, significantly shorter than others, there is a risk of a “thermal short circuit.” The warm water is essentially returned directly to the return line, causing the heat pump to think there is no more heat demand and thus shut off. However, the rooms remain “cold” and shortly after, it turns on again —> risk of rapid cycling.
Ok, thanks for your answers.
I think I’ll hold off on adjusting the flow for now, especially since the temperature in the bathroom is still comfortable for me.
In the kids’ rooms upstairs, it’s also around 22°C (72°F), which works for me, but my wife says it feels cold to her.
Since hardly anyone spends much time in those rooms during the day, it’s fine for the moment.
Overall, the temperatures in the house are currently acceptable.
As for the hot water, sometimes it’s not really hot, but that hasn’t bothered me or even been noticeable so far. I’m still experimenting a bit with it. Right now it’s set to 48°C (118°F) and 4 HR.
I think I’ll hold off on adjusting the flow for now, especially since the temperature in the bathroom is still comfortable for me.
In the kids’ rooms upstairs, it’s also around 22°C (72°F), which works for me, but my wife says it feels cold to her.
Since hardly anyone spends much time in those rooms during the day, it’s fine for the moment.
Overall, the temperatures in the house are currently acceptable.
As for the hot water, sometimes it’s not really hot, but that hasn’t bothered me or even been noticeable so far. I’m still experimenting a bit with it. Right now it’s set to 48°C (118°F) and 4 HR.
A
Alessandro16 Nov 2021 08:03How do you measure the temperature in the rooms?
Alessandro schrieb:
How do you measure the temperature in the rooms?I have a wireless weather station with individual sensors… no idea how accurate they are.
D
Daniel-Sp25 Nov 2021 21:23What can he say? The one who pays calls the tune, and he receives his salary from the employer... Just ask him why it is believed that an 800-liter (211-gallon) storage tank can store more energy than the screed, and why the hydraulic system is not designed so that the heat pump heats directly into the underfloor heating/screed...
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