Hi,
You need to bleed the radiators of air , if you have air in the system it will get trapped in the radiators and and stop the flow of water and heat to the radiator. There should be a bleed mechanism on the new radiators. If there isn't you will need to find a bleeder port somewhere in the system to bleed the air out.
Thank you,
Mark.
Journeyman Technician
UA Journeyman Pipefitter , HVAC, Refrigeration, DDC controls. 26 years.Commercial & residential
Did you get to the point where you had water flowing out of the bleed ports ?
Ok , when you are bleeding it do you get a steady stream of water ?
Thnaks
mark.
Hi.,
Sorry for all the questions , were the ones that you removed working ?
Thanks
Well let's take some knowns.If we flow hot water through a radiator it will radiate and convect heat , it convects heat at about 95% and radiates heat off at about 5%. The types of radiators you have are they the tall cast iron type, the shorter radiant panel type or the baseboard type ?
Mark
I'm just trying to figure out what type of radiators you have. Could you describe them ?
HI ,
My previous reply was just thinking out loud I suppose.
I was just saying there is no reason for a radiant heater to not work unless there is no flow through it. Is there a control valve on the radiator ? It would be on one of the connecting pipes to it.
Another thought is that you can bleed the air out of them because you don't need them to flow water to do that. So if a return or supply valve on that branch of the system were still closed you would not get flow through them even though you could have bled them
. Have you checked all the associated valves to these radiators ? And do they heat up at all or just not enough ?