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.
Alessandro schrieb:
What are your current electricity consumptions?Last week, I noted the following on the electricity meter:
Main electricity meter
Nov 6, 2021: 1439
Nov 11, 2021: 1475
Difference: 36 = approx. 7.2 kWh per day
Heat pump meter:
Nov 6, 2021, peak hours: 166
Nov 11, 2021, peak hours: 180
Difference: 14 = approx. 2.8 kWh per day
Nov 6, 2021, off-peak hours: 502
Nov 11, 2021, off-peak hours: 531
Difference: 29 = approx. 5.8 kWh per day
Total heat pump consumption:
5 days = 43 kWh
1 day = 8.6 kWh
Oetzberger schrieb:
And on the topic: Just search Google for forum posts about your heat pump model, and unfortunately you will see that many other homeowners have the same problems. Real relief, as DanielSP already mentioned, can only be achieved by converting the system. Yes, I have read that too, which is really quite disappointing... but I will contact my heating specialist or the company Roth and ask what they think about it.
Hockey6 schrieb:
HK3 Dining Room: laying distance 15cm (6 inches), 125.2 m (410 ft); 17 m² (183 sq ft), 1.6 l/min, 20 degrees
HK4 Living Room: laying distance 15cm (6 inches), 124.1 m (407 ft); 18 m² (194 sq ft), 1.6 l/min, 20 degrees Is AZ the pipe spacing?
With 15 cm (6 inches) and 20 (cm/inches?) that is quite generous. A bathroom with 10 cm (4 inches) spacing is actually also rather large.
You will therefore have to run slightly higher temperatures -> heating curve/room setpoint if it is supposed to get warm.
Heating circuit lengths over 100 m (330 ft) are also suboptimal. For rooms from around 17 m² (183 sq ft) we use two heating circuits.
driver55 schrieb:
AZ = Laying distance?
That’s quite generous with 15 cm (6 inches) and 20 cm (8 inches). Even 10 cm (4 inches) in the bathroom is technically quite large.
You will definitely need to run slightly higher temperatures -> heating curve/room setpoint if you want it to get warm.
Heating circuit lengths over 100 m (330 feet) are also suboptimal. For rooms of about 17 sqm (183 sq ft) or larger, we use two heating circuits. Yes, exactly, AZ is the pipe spacing.
Downstairs on the ground floor, I have no problems reaching the temperatures, and I don’t need 24 degrees in the bathroom downstairs anyway.
Upstairs it’s a bit more difficult to achieve those temperatures...
Currently, my heating curve is set at 27.5 / 23 / 0. I could manage with lower settings for the ground floor, but then the kids’ rooms would be too cool at around 21 degrees as my better half decided.
Upstairs bathroom reaches about 22.5 degrees, kids’ rooms 21.5, and the office 20.5.
Is that because the flow rates upstairs aren’t as high?
Downstairs in the living/dining area I comfortably get 23 degrees, or even warmer, which is how I want it anyway...
Hockey6 schrieb:
Yes, AZ is the installation spacing.
Downstairs on the ground floor, I don’t have any problems reaching the temperatures, and in the bathroom downstairs, I don’t need 24 degrees.
Upstairs it’s a bit more difficult to achieve those temperatures...
Currently, I have the heating curve set at 27.5 / 23 / 0. For the ground floor, I could get by with a bit less, but then the kids’ rooms would be around 21 degrees, which my partner decided is too cool.
Upstairs in the bathroom, I reach about 22.5 degrees, kids’ rooms 21.5, and the office 20.5.
Is that because the flow rates upstairs are not as high?
Downstairs in the living/dining area, I easily get 23 degrees or more, which is how it’s supposed to be... One more question from me...
If I want the bathroom to be warmer than it currently is, but notice that adjusting the heating curve doesn’t make it any warmer, could I increase the flow rate at the manifold for the bathroom? Would that make sense? Or would changing that automatically affect other flow rates/settings since everything is somehow interconnected?
A
Alessandro15 Nov 2021 16:27You can try increasing the flow rate in the bathroom. However, this will slightly affect the other heating circuits, so you’ll need to fine-tune them a bit.
I don’t think you’ll be able to get the bathroom warmer than 22.5°C (72.5°F).
Your energy consumption is actually excellent! At least there, no optimization is needed.
I don’t think you’ll be able to get the bathroom warmer than 22.5°C (72.5°F).
Your energy consumption is actually excellent! At least there, no optimization is needed.
Similar topics