Replies

1. 
   vicrider85 | Jun 11, 2019 01:57am | #1

   Hi,

   That's a convector box. There's usually a manual turn valve underneath it which you can adjust the flow of water through, though it looks like yours might just be zone controlled (No valve on your soft copper pipes). If you do have a valve you could ensure it is functional when you take the heater out. The first thing you should try is to remove any air in that radiator or in the system as a whole, that auto air venter could be plugged, and ensure you have a high enough operating pressure.
   It would be fairly invasive to remove the whole convector box (because it's recessed in the wall). If you're just wondering about getting more heat from it and maybe replacing the finned section, I would try taking the existing one out, cleaning the fins thoroughly and cleaning out the insides with chemical and flushing with water. It could be plugged inside, reducing the flow, or not getting any air between the fins from dirt/dust. Either one will limit your heat output. Installing a new finned section won't be much more efficient (if at all) in my opinion when compared to a clean and functional version of what you have there.
   You should be able to run your system up to about 180 degrees C with those heaters (sorry don't know the figure in F).

   Hope that helps.

2. 
   vicrider85 | Jun 11, 2019 02:00am | #2

   I just re-read your original post and realized you may be wondering about replacing many of these radiators. Basically the previous advice stands, but if you don't want to take them all out to flush the interiors manually you could first try running chemical in your system after flushing it as well as you can, then repeating after a period of time to clean your system up (depending on the condition of your system's cleanliness).

3. 
   bnisimov | Jun 12, 2019 10:06pm | #3

   thank you!