some of my radiators dont work?

Question

I have just had my rads extendid from 5 to 9 and only 1 of the new ones warms up slightly I believe my boiler and pump are up to it the ones that work are very hot but the new ones are cold

Answer 1

Did you bleed out the radiators? when the system was charged? are they hooked up correctly. I ask this because I aw a guy that asked me why he couldn't get real heat out of his radiators, the plumber hooked them up in a series instead of going through each one. They were bypassing. For ten years?

Recheck everything.

Answer 2

you need to let the air out, At the side of the radiators there is a small valve, normally you have a small key for this , but if you don´t have a key then use a coin. Turn the valve and let the air out. Once you have this done the radiators will heat up. Just remember to place a small jug or cup under the valve to catch any water

Answer 3

Buy a radiator key and bleed the air out.The last radiator on the loop should be fed first,basic rad piping.

Answer 4

Hey, maybe this is obvious, but have you "bled" your rads? That is, let the steam/air out. There should be a valve somewhere, usually near the bottom, that you can open. Let it hiss until a little water runs out. Then close it.

Answer 5

you have to bleed your system of air,also when you open up a close water system to add any or more radiators you are supposed to flush the system at least 3 times to get out all the gunk,then when the system gets hot after you refill it with water then you bleed each radiator or you should have a bleed in each one.

Answer 6

Probably need to check that all the water valves are open and bleed the air out of the new units in direction of the water flow.