Hello all.
I drained my system down a while ago. I moved a radiator, and added a boiler filter too as it seemed sensible.
I followed a strict checklist for the refill.
All valves open....bleeders closed. Three way valve to manual....etc...
Started filling the header tank.
Then began bleeding the last/lowest radiator on the system.
Initially I had good air...but then it just withered and died.....
Tried a few other ground floor rads….but...similar story...
I then went under the floor to the drain cock, so the lowest point in the system.....opened that....and heard bubbling in the system and even with a hosepipe attached I got dripping from the connection. Although this was enough to cause dripping at the other end of the hosepipe too (it had slight upwards travel) it did not become a regular flow.
I cleaned out the header tank before filling with a vacuum. So I don't think any crap got flushed down it.
Any ideas? I am leaning to more of an airlock rather than a blockage.....but...unsure.
I did not want to start randomly draining other parts of the system.
Thanks in advance.
I drained my system down a while ago. I moved a radiator, and added a boiler filter too as it seemed sensible.
I followed a strict checklist for the refill.
All valves open....bleeders closed. Three way valve to manual....etc...
Started filling the header tank.
Then began bleeding the last/lowest radiator on the system.
Initially I had good air...but then it just withered and died.....
Tried a few other ground floor rads….but...similar story...
I then went under the floor to the drain cock, so the lowest point in the system.....opened that....and heard bubbling in the system and even with a hosepipe attached I got dripping from the connection. Although this was enough to cause dripping at the other end of the hosepipe too (it had slight upwards travel) it did not become a regular flow.
I cleaned out the header tank before filling with a vacuum. So I don't think any crap got flushed down it.
Any ideas? I am leaning to more of an airlock rather than a blockage.....but...unsure.
I did not want to start randomly draining other parts of the system.
Thanks in advance.
Last edited: