TGA planner difficulties, underfloor heating supply temperature + wastewater ventilation

It was as expected: She proudly told me on the phone that now all heating circuits are between 70 and 100m. Only the bathroom is not, here the heating circuit is 159m long. My suggestion that two heating circuits could simply be made out of this one will now still be implemented.

Morning,

and yet the advance setting could still be lowered?
There is still enough potential in the release intervals, isn't there?

Yes, but the planners don't seem to want that. The OP is already rightly testing everyone's patience. In that setup, you can only get the best possible out of it.

Tomorrow, and yet the setup of the lead time could be made lower? There is still enough potential in the laying distances, isn't there?

And under certain circumstances, you would then have to accept lower temperatures in the pools or cover walls because you are already at the limit with the distance there.

Yes, with 15cm on the ground floor and 10cm on the upper floor, I could live with that under the given circumstances, provided one might still try to reduce it a bit more in the bathroom (to 5 or 7.5). I did not understand whether that will also be done.

Whether they then calculate 38 or 36 flow temperature does not matter; one can adjust it further afterwards oneself.
In case of doubt, then put a fan heater in the bathroom.

There is still enough potential in the installation spacing, isn't there?

I am unfortunately still missing a few exact data points for the new calculation. However, the supply temperature cannot be further reduced without a significant undersupply in the main bathroom. The rest of the house still has some potential. If I wanted to push the supply temperature even lower, I would first have to convince the TGA planner to include a wall heating system, then the developer would have to plan for it and coordinate with the general contractor. Surely additional planning services would then be charged again, etc. I think that is unrealistic in this setup. If it is done as last communicated, then I am initially satisfied. Further optimization will probably have to be based on the existing system and on real measured values. to : In both bathrooms, there are then 5cm with installation spacing. This sets the bathrooms to 23°C, although this leads to an oversupply in the guest bathroom. An electric towel warmer is then additionally present in both bathrooms.