ᐅ Which type of heating pipes are commonly used nowadays?

Created on: 11 Jun 2020 18:16
O
Olli_35
Hello everyone,

I have a question. I’m currently renovating two rooms that have old cast iron radiators installed in window recesses. I want to close off these recesses and install new radiators.

There are steel pipes installed, which I would like to partially replace. The good thing is that all the pipes run along the ceiling in the basement and then go up through the ceiling into the recesses. So, I can run new pipes along the ceiling. However, these will need to be connected to the steel pipes until I renovate the other rooms.

Which type of pipes are considered the best to use nowadays?
The supply temperature is 80°C (176°F).

Copper
Aluminum composite
Plastic pipes

And what is the best way to connect the new pipe to the steel pipe? Should I cut threads and screw on a threaded or press fitting?

Thank you in advance.

Olli_35
T
T_im_Norden
2 Jul 2020 12:42
Keep an eye on the material mix; a mixed installation can cause problems.
J
Joedreck
2 Jul 2020 13:57
Because steel pipes hardly ever break. And please be careful with the diameter of the new pipes.
Knöpfchen2 Jul 2020 18:17
Is it an old gravity heating system, or is there a circulation pump in the setup?
O
Olli_35
2 Jul 2020 19:31
Yes, but doesn’t it make more sense to replace the radiator, especially since they can be relatively easily renewed? I thought I was doing the house a favor.

@Knöpfchen The heating system includes a pump.
Knöpfchen2 Jul 2020 19:58
If you use composite pipes, make sure to check what temperatures they can withstand and how and with what materials they need to be installed if you want to do it yourself. Try searching for the Tece system.
What kind of boiler do you have: a combi boiler, cast iron, or steel boiler?
What supply temperature is being used?
O
Olli_35
2 Jul 2020 20:13
Simple copper pipes are used, and it’s a steel heating boiler. No, I didn’t want to do it myself, at least not entirely. I am fairly confident in my skills and consider myself somewhat handy. But I have avoided dealing with the heating system so far. However, I thought I might educate myself a little.

The flow temperature is, I believe, a maximum of 70 or 75 degrees Celsius (158 or 167°F). It is automatically adjusted according to the outside temperature.
It is a house with three residential units (basement, ground floor, and attic). In the basement and ground floor, I can renew all the pipes bit by bit. Whenever I plaster a room, I also want to close the niches and at the same time renew part of the piping. I hope to have all the radiator niches closed by the end of next year.