ᐅ Fine-tuning of underfloor heating in a newly built home under warranty? First occupancy

Created on: 28 May 2016 09:10

Good day.
Maybe someone here can give me some practical advice.
I will soon be moving into a new condominium (KfW70 standard, pellet heating, underfloor heating, solar collectors for hot water) in a multi-family building.

Is the heating system usually properly adjusted from the start, or is there initially a kind of basic setup?
I won’t need heating for the first few months until autumn. Also, the heating isn’t running at the handover. So I don’t even know if the underfloor heating works at all or if it’s correctly adjusted.

Since I’m not an expert, I don’t know if—assuming it is adjusted—it is actually set up correctly.

Does adjusting the underfloor heating fall under warranty? Or can the heating technician charge me for that service?

And is it okay to ask the heating technician or the general contractor for a "heating/setting curve"? I could then have a heating specialist take a look at it.

Many thanks
erika

fraubauer28 May 2016 18:15

Tom1607 schrieb:
As far as I know, hydraulic balancing has been mandatory for new buildings since September 2015, at least according to the energy agency. This is regulated here by
DIN 4701 / 10
VOB/C - DIN 18380 sections 3.1.1 and 3.5.1

Furthermore, hydraulic balancing is basically pointless for underfloor heating systems with individual room control, except maybe when there are multiple circuits per room.

Thanks for the information.
So, I don’t need to worry about this.
I’d rather not argue with the heating engineer.
Thanks

fraubauer31 May 2016 17:06

Tom1607 schrieb:
@Mycraft: I agree with you that individual room control in a properly designed and balanced underfloor heating system is pointless. But this fails for two reasons: 1. Individual room control is mandatory (bureaucrats decided this again due to lobbying), and 2. installers usually increase the spacing between pipes and raise the flow temperature to the upper limit to get the needed energy. But customers just look at the price and go for the cheapest option (=> higher costs due to longer pipe lengths and possibly more heating circuits). Most people don’t understand the connection between flow temperature and pipe spacing…

Thank you very much for the information.
Should I now address the builder or the heating engineer (both will be present at the handover of the new KfW70 apartment) regarding the "hydraulic balancing"?
I would prefer not to embarrass myself.
Or should this have already been done, since it is a KfW70 standard?
Am I allowed to ask for a protocol?
Or should I ask, "Has the hydraulic balancing of the underfloor heating been done or will it still be done?"

Thanks

Bieber081531 May 2016 21:48

Say one of the following sentences if the hydraulic balancing report is not handed over unsolicited.

- I cannot find the hydraulic balancing report among the documents provided. Do you have it with you?

- Please provide me with the hydraulic balancing report!

- Oh, you don’t have the report with you? Then I will note the absence of the hydraulic balancing report in the handover protocol for the apartment. [*wer schreibt der bleibt*]

fraubauer1 Jun 2016 08:50

#10

Bieber0815 schrieb:
Say one of the following sentences if the hydraulic balancing report is not provided without being asked.
- I cannot find the hydraulic balancing report among the documents handed over. Do you have it with you?

- Please provide me with the hydraulic balancing report!

- Oh, you don’t have the hydraulic balancing report with you? Then I will note the absence of the hydraulic balancing report in the handover protocol for the apartment. [*who documents stays*]

Great. Thank you very much.
And then I would also add "and the energy performance certificate" is not included either.

ᐅ Fine-tuning of underfloor heating in a newly built home under warranty? First occupancy

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