Radiator not working

[Diyer171]

Hi All,
I recently installed a radiator and it only seems to be Luke warm along the base whilst the rest is stone cold. I have repressurised the system and bled the radiator the thermostat is set to the max setting and the other valve is turned all the way anti clockwise ( I have also tried it all the way clockwise). All other radiators are hot even the one on the other side of the same wall. Any ideas are welcome. I have since installed another radiator that works just fine so I can’t seem to think what the issue could be.

 

[king of pipes]

Do you yourself fit those vertical rads with the baffle closest to the flow or is it manufacturer specific?

As manufacturers states 👍

 

[John.g]

I guess I was a bit hasty to comment as they have finally come on now but all other rads must have been blazing for 30mins before those 3 had any heat. They are still not putting out as much heat as the others.

Don't know if you can still hang that column rad or not if you turn it around to get the baffle nearest the flow end to see if it improves, in the absence of any markings or manufacturer's instructions.

 

[Diyer171]

thanks for all the advice! I guess switching out the valves has improved the flow. I guess it’s just time to rebalance the system now. From what I have googled I guess I just turn all the hot rads down to a 1/4 turn on the lock shield and leave the cold ones on full?!

 

[king of pipes]

Alan Hart on you tube has a video on how to do it . Regards kop

 

[John.g]

thanks for all the advice! I guess switching out the valves has improved the flow. I guess it’s just time to rebalance the system now. From what I have googled I guess I just turn all the hot rads down to a 1/4 turn on the lock shield and leave the cold ones on full?!

Came across a bit of info that you may (or may not) be interested in, I changed out some of my TRVs recently and used EPH (15mm), I measured the flow rate through one of them both ways and got the same, 3.8 LPM @ 0.5M head, I didn't renew the lock shield valves which are supplied with the TRVs but got exactly the same flow rates on one of these, these flow rates are very close to the manufacturers flow rate of 1 M3/hour @ 1 bar head. Balancing will hopefully solve your problem.