fitted new radiator now noe hot water

[netdef]

hello all, I would like to say sorry for just jumping straight in here with a question !

I have just re-tiled the bathroom while i was at it i thought i would change hte radiator for a new towel warmer. I drained all the radiator (I heard the expansion tank going so i locked off the ball cock until all water was gone) put new radiator on an removed the tie off from the ball cock. I had ran out of hot water to do the dishes so i thought I'll put the heater on for an Hr, after a while i noted no hot water, i thought maybe air in the system and teh pump not pushing water around. went up stairs to have a look and noticed my hot water cylinder was leaking from what looked like a valve. I quickly bled all the radiators but to no joy it was still the same, I turned boiler off and heard the valve either blow out air or suck in air, think it was the first one.



I have attached this lovely picture, I hope someone can point me in the right direction! I still got to more bathrooms and radiators to do

 

[Henno82]

Just replace the valve that you think is blowing air out try to eliminate the obvious first.

 

[PlumbBobBob]

it's just the automatic air vent

 

[boilerman]

Firstly,always turn the boiler and pump off when you're venting and let it all settle.Then vent the pump from the front.

 

[netdef]

Just an update, the leak nearly filled a bucket last night, nothing was on, all heating was off as was boiler. This morning i thought I would put both hot water on and heating to get the water flowing around the system. I now have hot water but no heating still, drained at bottom radiators to get rust out and hopefully some more air but what i don't understand is why it is constantly dripping from the air valve on the tank.

 

[WaterTight]

Just because nothing is "on" doesn't mean there's isn't water in the circuit. The circuit also fills itself up if need be, which is why there is a ball-cock for you to tie up on the f+e tank.

It's a bit odd that the automatic air vent leaked on a refill. It might have been about to leak at some point and a slight increased in pressure on a refill gave it an excuse.

Either way, air will be the most likely cause of your problems. Replace the valve and get air out of the system.