Hello everyone...
We are currently planning the underfloor heating for our extension.
Our extension measures 7.50 m (25 feet) by 5 m (16 feet)... it will consist of 2 rooms...
In the whole house, we have regular radiators...
Our plumber recommends using one RTL valve in the smaller room and two RTL valves in the larger room, as the cost of a mixing valve including a manifold for two rooms would be too high.
Can you confirm this or do you have good experiences with such valves?
We are currently planning the underfloor heating for our extension.
Our extension measures 7.50 m (25 feet) by 5 m (16 feet)... it will consist of 2 rooms...
In the whole house, we have regular radiators...
Our plumber recommends using one RTL valve in the smaller room and two RTL valves in the larger room, as the cost of a mixing valve including a manifold for two rooms would be too high.
Can you confirm this or do you have good experiences with such valves?
Hello,
I would install a compact control unit with a circulation pump. The cost is about 400€ (approx. 440 USD). This assembly is screwed directly onto the manifold and regulates the temperature needed for the underfloor heating.
The RTL valve is a workaround that I would definitely avoid. RTL can be used as temperature control in a bathroom, but not for two rooms.
The total cost for the control unit with pump and a 4-way manifold is under 500€ (approx. 550 USD). This setup allows proper temperature regulation using thermostats.
If you try to save money here, you will just be annoyed later!
I would install a compact control unit with a circulation pump. The cost is about 400€ (approx. 440 USD). This assembly is screwed directly onto the manifold and regulates the temperature needed for the underfloor heating.
The RTL valve is a workaround that I would definitely avoid. RTL can be used as temperature control in a bathroom, but not for two rooms.
The total cost for the control unit with pump and a 4-way manifold is under 500€ (approx. 550 USD). This setup allows proper temperature regulation using thermostats.
If you try to save money here, you will just be annoyed later!
The problem is that we will have a workshop 4x5m (13x16 feet) with underfloor heating, located 3 meters (10 feet) away from the house. Our house/extension is about 70cm (28 inches) higher than the ground level. The workshop is at the ground level height. In that case, because of the pipe length and the already existing district heating pipes 2x20, would I need an additional distributor with a mixing valve there, or am I misunderstanding this?
I don’t understand this now—you have 2 rooms of about 40 m² (430 ft²) each and a separate room of 20 m² (215 ft²)?
In theory, you can run the supply and return lines from the manifold with two appropriate pipes into the workshop and install a secondary manifold there. The pump assembly should handle this without any problems. The height difference is not critical, especially if the pump assembly is positioned higher.
In my house, I also have 3 manifolds fed by a single pump assembly. Each manifold is connected using 28 mm (1.1 inches) stainless steel pipes. However, I have 28 heating circuits distributed over the 3 manifolds. Depending on the pipe spacing (10 cm (4 inches) in my case), you would get about 6 heating circuits for your situation (assuming the same 10 cm spacing), which means 1 heating circuit per 10 m² (108 ft²).
In theory, you can run the supply and return lines from the manifold with two appropriate pipes into the workshop and install a secondary manifold there. The pump assembly should handle this without any problems. The height difference is not critical, especially if the pump assembly is positioned higher.
In my house, I also have 3 manifolds fed by a single pump assembly. Each manifold is connected using 28 mm (1.1 inches) stainless steel pipes. However, I have 28 heating circuits distributed over the 3 manifolds. Depending on the pipe spacing (10 cm (4 inches) in my case), you would get about 6 heating circuits for your situation (assuming the same 10 cm spacing), which means 1 heating circuit per 10 m² (108 ft²).
Here is a drawing made with Paint (side view).
On the left is the extension, on the right the workshop.
The extension measures 7.5 x 5 meters (two rooms) and the workshop 4 x 5 meters (one room).
I also already have a district heating pipe with two pipes, if that’s the correct term.
Would it be possible to feed from the heating circuit distributor, which is installed in the extension including pump with supply and return lines on the right side, into a distributor in the workshop?
I have made a picture for this..
On the left is the extension, on the right the workshop.
The extension measures 7.5 x 5 meters (two rooms) and the workshop 4 x 5 meters (one room).
I also already have a district heating pipe with two pipes, if that’s the correct term.
Would it be possible to feed from the heating circuit distributor, which is installed in the extension including pump with supply and return lines on the right side, into a distributor in the workshop?
I have made a picture for this..
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