ᐅ Air-to-water heat pump Rotex HPSU Compact 516 – user experiences

Created on: 5 Dec 2020 09:35

Chris1990

Good morning everyone, we will start building in January with Town & Country (HIS) in Brandenburg. We will be installing a Rotex HPSU Compact 516 air-to-water heat pump. Has anyone here already had experience with this unit? How much does your machine consume? Could you please share some information?

Is there anything we should consider before starting construction? Is it possible to add anything extra?

Our house:
Flair Duo 180m² (1937ft²) (with a granny flat)
Underfloor heating

Chris199024 Jan 2021 19:46

What is the disadvantage of an oversized air-to-water heat pump, for example one with 11 kW?

Daniel-Sp24 Jan 2021 20:05

Rapid wear due to the heat pump cycling on and off because it cannot dissipate the heat. Inefficient operation.

Chris199025 Jan 2021 09:21

Daniel-Sp schrieb:

Rapid wear due to cycling of the heat pump because it cannot dissipate the heat.
Inefficient operation.

Okay, thanks. When I asked, I was told that 11 kW is too much, and according to HLB, 8 kW will be sufficient.

tomtom7925 Jan 2021 09:44

#10

Even 8 kW is probably too much. And this is coming from someone with a KfW 70 standard house, 250 m2 (2690 sq ft), living in the Northern Black Forest who just came back from shoveling snow.

Find out the standard outdoor temperature for your region.

For example, where I am it’s -14°C (7°F).

Then use an online heat load calculator, roughly enter the values, and add about 20%. I think you’ll end up somewhere around 5000–6000 W maximum.

If you are unsure, it’s worth investing 300 euros in a professional heat load calculation.

ᐅ Air-to-water heat pump Rotex HPSU Compact 516 – user experiences

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