Just fitted K3 radaitor and the centre front panel won’t heat up

[Benny895]

I have started fitting new radiators in my house. The lounge kitchen gets very cold in the winter and is a big room that has previously had an extension put on it and is 19.5 metres by 6.5 metres with a 2.25metre high ceiling.

I started by replacing an old radaitor with a 1200x 600mm K2. Which heats up and works fine, great heat by Stelrad. I have this weekend fitted a K3 1800x700mm. I have this Radaitor hot but the lower centre front panels I can’t get hot. It does feel like the lower half of the radaitor (especially the front panel as that’s what I can get my hand too) isn’t burning hot like the K2. I have tried almost everything apart from actual changing components; I have bled the rads, shut the system down to one rad, balanced the system, the central heating pump is on max.

This Radaitor is working and convecting but not as hot as it should be.


Grundfos UPS 2-50/60
System / non Combi
4rads upstairs 2 hand towel rails
7 rads downstairs one towel rails
25kw boiler

Has anyone else experience this with k3 / triple panel Radaitors. Not a lot of posts online about triple panel radaitors. Some more posts and specifics about K3 issues would be helpful.

 

[Benny895]

Hello,

Winter has come and finally I have a warm house with the K3 and the two smaller width K2s heating the whole house. Collectively the three rads I changed went from 4000-5000 BTU approx. To 30,150 BTU. The 1.8metre by 700mm height K3 is a beast and heats a massive space and thereby the whole house.

Would recommend K3 for cold houses or large cold spaces.

Thank you for all contributors helping with some issues faced.

Ben