Construction of a 144 sqm bungalow in Fichtenwalde (near Potsdam)

Already read the attachments? They contain the installation distances, that there will be a heating load calculation and hydraulic spacing.

We have also discussed this topic many times in the forum. I have been here for a few years :cool:

Furthermore, the managing director of the company is active in development and teaching about heat pumps at universities. No, I don't only know because he told me. I trust him on this topic.

I have not seen any heating load calculation. There were only 2 excerpts from the construction performance specification.

I have not seen a heating load calculation. There were only 2 excerpts from the construction specification.

Maybe better here. Right in the middle.

Summary:
- 10 cm laying distance on average (maximum would be better, that is clear)
- heating load calculation
- hydraulic balancing.

And here again the construction of the floor slab. The insulation is under the floor slab.

Maybe better here. Right in the middle.

Summary:
- 10 cm laying distance on average (maximum would be better, that's clear)
- Heating load calculation
- Hydraulic balancing.

And here again the structure of the floor slab. The insulation is underneath the floor slab.

Unfortunately, I haven’t read your entire thread. But based on the knowledge of these details about the floor structure, I retract my criticism regarding the installation of the insulation for the hot water pipes. Your heating load calculation for the building should be about 30 to 40 pages. A design with 35° supply temperature is really only standard. In another forum (specialized in heating), you could get many tips. For very well-insulated houses, a supply temperature of 30° should be the goal. For a bungalow (like yours) it is not quite as "simple" as with a compact city villa. Our bungalow is much smaller with 90 m², we have a supply temperature of 31° at NAT, with 13 heating circuits. My air-water heat pump has only 3.5 kW maximum heating load.

I have been here for a few years already :cool:

But that doesn't come close to 60 years of experience :p

That doesn't even come close to 60 years of experience :p

I was talking about the two external construction supervisors :cool:

there are 13 heating circuits for that.

They have them here as well.

Basically, I would request the heating load calculation "for the documents." 35°C is really not a great target value.

It will work, and you can't always optimize everything during construction. That makes you old.