Hi all
Have used this forum a lot over the past year, but this is the first time I've a problem that I can't solve.
I recently bought a house that has a recently installed (1-2 years ago) central heating system. Whiel the downstairs radiators work fine and are hot from top to bottom, I've real problems with the upstairs radiators. They all appear to fill up with enormous amounts of air and are cold except from the very bottom of the radiators. Bleeding the radiators takes forever, as the air doesn't appear to be pushed out under any pressure. So I have to open and close the valves on each to coax the air out. When I do get water coming out, the radiators are hot - but within a couple of weeks, they have filled with air again.
I've looked at the header tank which was filled with dirty water and a lot of debris which had covered the sides of the tank and the float (rigth term?). It looked like the vent pipe was also under the water level. So I baled that out - horrible job - and it has refilled to a good level (over outlet, but under vents).
Next thing I was going to try was to balance the radiators to see if I can increase the pressure in the upstairs radiators so that I can get them to bleed more rapidly.
But I'm not sure whether this is just a balancing issue, or whether something more fundamental is wrong and is drawing air into the system.
Any thoughts or suggestions would be appreciatted.
B
Have used this forum a lot over the past year, but this is the first time I've a problem that I can't solve.
I recently bought a house that has a recently installed (1-2 years ago) central heating system. Whiel the downstairs radiators work fine and are hot from top to bottom, I've real problems with the upstairs radiators. They all appear to fill up with enormous amounts of air and are cold except from the very bottom of the radiators. Bleeding the radiators takes forever, as the air doesn't appear to be pushed out under any pressure. So I have to open and close the valves on each to coax the air out. When I do get water coming out, the radiators are hot - but within a couple of weeks, they have filled with air again.
I've looked at the header tank which was filled with dirty water and a lot of debris which had covered the sides of the tank and the float (rigth term?). It looked like the vent pipe was also under the water level. So I baled that out - horrible job - and it has refilled to a good level (over outlet, but under vents).
Next thing I was going to try was to balance the radiators to see if I can increase the pressure in the upstairs radiators so that I can get them to bleed more rapidly.
But I'm not sure whether this is just a balancing issue, or whether something more fundamental is wrong and is drawing air into the system.
Any thoughts or suggestions would be appreciatted.
B