air lock in ch return pipe

[grazzer]

apologies if this is answered elsewhere - had a look and couldn't see it.

I installed two new radiators in a downstairs room this weekend (closed system). Because of the way the pipes coming into the room were running and the need to avoid joists etc I couldn't avoid creating a high point in the pipework - ie there is a place air can collect in the pipes rather than automatically running into the radiator. After about three days a small amount of air appeared to have collected there and caused one of the radiators to go cold. I got rid of it easily by shutting off the other ground floor rads.

My question is though should I not have created the high point in the first place or have I just been unlucky and this is a hangover from refilling the system? - I guess it could have been possible to avoid the high point but would have been a lot more work. If it happens regularly I might go back and replumb the room but I'd rather not. Either way I don't want to make the same mistake again if it was a mistake.

 

[Rico99]

Hi there,

Having a high spot into rad is not ideal, but as your system is a "closed" one its not too bad.

As lng as you topped the system up again when you bled the air out, a closed system shoud not let any air into it unless there is a leak somewhere or a paer on the boier is faulty.

Just keep you eye on it and change pipwork if it really statrs to get on your nerves.

Rico

 

[mogget]

If you can't avoid creating a high point, it can be a good idea to fit a little manual vent - it's a bit like a 15mm end cap but with a thumbscrew which, when turned, opens or closes the vent.