ᐅ New Construction – Uneven Underfloor Heating (Vaillant Aurocompact)
Created on: 6 May 2021 18:24
M
MaxMustaman92
Hello everyone,
We moved into our newly built single-family house 20 days ago (120 m2 (1,292 ft²) living space, tiled floors and underfloor heating throughout the ground floor and upper floor, completed in December 2020). We have now noticed that the underfloor heating (ground floor and upper floor), which is operated via a Vaillant aurocompact solar gas condensing system + control unit "multimatic VRC 700/6" + room thermostats in every room, apparently does not really heat or does not heat sufficiently well.
The problem: The floor is noticeably warm only in some rooms (slightly), no matter if we set a desired temperature of 23, 25, or 28°C (73, 77, or 82°F). We also have the impression that it takes a very long time (about 15–20 sec) until warm water comes out of the taps.
The operating mode is set to "Auto" for both "Heating" and "Hot water."
"Zone 1" (heating) is currently set to 25°C (77°F) from 00:00 to 24:00.
All room thermostats are set to "standard" (medium heat).
In addition, we have two heating manifolds in the house (one in the utility room on the ground floor and one in the hallway of the upper floor).
I do not initially assume that there is a defect in the system itself. Rather, I suspect user error on my part due to a lack of knowledge.
Does anyone have an idea what the problem might be or how I can achieve even underfloor heating in all rooms?
We moved into our newly built single-family house 20 days ago (120 m2 (1,292 ft²) living space, tiled floors and underfloor heating throughout the ground floor and upper floor, completed in December 2020). We have now noticed that the underfloor heating (ground floor and upper floor), which is operated via a Vaillant aurocompact solar gas condensing system + control unit "multimatic VRC 700/6" + room thermostats in every room, apparently does not really heat or does not heat sufficiently well.
The problem: The floor is noticeably warm only in some rooms (slightly), no matter if we set a desired temperature of 23, 25, or 28°C (73, 77, or 82°F). We also have the impression that it takes a very long time (about 15–20 sec) until warm water comes out of the taps.
The operating mode is set to "Auto" for both "Heating" and "Hot water."
"Zone 1" (heating) is currently set to 25°C (77°F) from 00:00 to 24:00.
All room thermostats are set to "standard" (medium heat).
In addition, we have two heating manifolds in the house (one in the utility room on the ground floor and one in the hallway of the upper floor).
I do not initially assume that there is a defect in the system itself. Rather, I suspect user error on my part due to a lack of knowledge.
Does anyone have an idea what the problem might be or how I can achieve even underfloor heating in all rooms?
