ᐅ Installation of the underfloor heating system in the upper floor hallway area
Created on: 22 Jul 2024 11:32
D
Dachshund90
Hello everyone,
As you can see from the attachment, we are currently installing the underfloor heating. We are a bit uncertain about the next steps for the hallway on the upper floor, so here is an explanation:
The heating circuit manifold (HKV) is located in the master bedroom behind the door. From there, the supply and return lines each run into the children's room. If I don’t run the underfloor heating from the bathroom through the wall to the manifold (which was still possible until now), a third supply and return line would have to go through the hallway.
A separate heating circuit for the hallway would be quite small, as the pipes to the adjacent rooms already take up considerable space.
Additionally, the hallway on the ground floor is also heated. That leads me to wonder how the hallway on the upper floor can be controlled, since it is actually an open space between the ground and upper floors. I have planned a KNX system with appropriate regulation based on temperature sensors.
Should I simply omit the separate circuit for the upper hallway, since it will naturally warm up from below and the supply and return lines will also heat the hallway somewhat? Or should I install a separate circuit? Or will the floor become too cold in areas where there are no supply and return lines?
If I do add a small heating circuit, how would the control work? In theory, the two hallways would then be "working against each other."
Thanks for your answers and best regards!
As you can see from the attachment, we are currently installing the underfloor heating. We are a bit uncertain about the next steps for the hallway on the upper floor, so here is an explanation:
The heating circuit manifold (HKV) is located in the master bedroom behind the door. From there, the supply and return lines each run into the children's room. If I don’t run the underfloor heating from the bathroom through the wall to the manifold (which was still possible until now), a third supply and return line would have to go through the hallway.
A separate heating circuit for the hallway would be quite small, as the pipes to the adjacent rooms already take up considerable space.
Additionally, the hallway on the ground floor is also heated. That leads me to wonder how the hallway on the upper floor can be controlled, since it is actually an open space between the ground and upper floors. I have planned a KNX system with appropriate regulation based on temperature sensors.
Should I simply omit the separate circuit for the upper hallway, since it will naturally warm up from below and the supply and return lines will also heat the hallway somewhat? Or should I install a separate circuit? Or will the floor become too cold in areas where there are no supply and return lines?
If I do add a small heating circuit, how would the control work? In theory, the two hallways would then be "working against each other."
Thanks for your answers and best regards!
D
Dachshund9022 Jul 2024 19:36I have started installing according to the specified spacing. There is little room for adjustment, and except for a few meters, I have reached the indicated pipe length.
Temperatures are set at 20/24. The supply temperature is specified as 35 degrees Celsius (95 degrees Fahrenheit).
Temperatures are set at 20/24. The supply temperature is specified as 35 degrees Celsius (95 degrees Fahrenheit).
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nordanney22 Jul 2024 19:41Dachshund90 schrieb:
Temperatures are listed as 20/24. The supply temperature is specified as 35 degrees Celsius (95°F).What a pity...This could have been done in a more modern way. You won't achieve 20/24 anyway, as the temperatures will equalize. And if the underfloor heating in the bathroom actually reaches 24 degrees Celsius (75°F), the whole house will be noticeably warmer than 20 degrees Celsius (68°F). So, the bathroom is deliberately not properly equipped with underfloor heating but instead uses wall-mounted radiators. There is no other way to plan it.
But the house will be warm. That’s beyond question. It just could have been done better.
S
stjoob_at25 Jul 2024 13:17Daniel-Sp schrieb:
You can also combine the dressing room and hallway, so that all heating circuits have roughly the same pipe lengths. That would make the hydraulic balancing much easier. ERR regulations, I believe, only apply to rooms of 6m² (65 sq ft) or larger. At least, that was the case in 2019.You can simply get exempted from the nonsense of the ERR – Efficiency Reduction Regulation. Hopefully, a buffer tank is not planned for a ground source heat pump with underfloor heating.R
RotorMotor25 Jul 2024 14:18Is the heating circuit distributor already installed?
If not, I would strongly advise against placing it in the bedroom!
Such a device can, especially with active control, produce noise.
Additionally, it generates waste heat, which you do not want in the bedroom.
Better to install it in the hallway or bathroom.
If not, I would strongly advise against placing it in the bedroom!
Such a device can, especially with active control, produce noise.
Additionally, it generates waste heat, which you do not want in the bedroom.
Better to install it in the hallway or bathroom.
D
Dachshund9025 Jul 2024 14:20stjoob_at schrieb:
You can simply get exempted from that nonsense ERR - Efficiency Reduction Regulation. Hopefully, no buffer tank is planned for a brine-to-water heat pump with underfloor heating either. No buffer tank.
RotorMotor schrieb:
Is the heating manifold already installed?
Otherwise, I would strongly advise against placing it in the bedroom!
Such a unit can generate noise, especially with active controls.
Also, it produces waste heat that you don’t want in the bedroom.
Better put it in the hallway or bathroom. Yes, it’s already installed; the heating circuits for the master bedroom, dressing room, and children’s rooms 1 and 2 are connected.
Now to the original question:
I think we will route the bathroom return flow with a few loops through the hallway.
R
RotorMotor25 Jul 2024 16:05Dachshund90 schrieb:
Yes, it’s already in place. The heating circuits for the master bedroom, walk-in closet, children’s room 1, and children’s room 2 are already connected. That’s a pity.
But I would still consider moving it about 20cm (8 inches) to the other side of the wall.
So, into the bathroom.
Dachshund90 schrieb:
Now to the original question:
I think we will route the bathroom return flow back through the hallway with a few bends. I wouldn’t do that.
What’s the reason not to have a dedicated circuit?
I would have installed insulated supply lines to the individual rooms and then created a separate circuit.
If that’s no longer possible, then you could route a little return flow from the children’s rooms, but don’t extend the pipe runs for the bathroom.
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