Trouble bleeding radiators

Emily Terry

I can't seem to find the screw which will allow me to bleed my hot water slant fin radiators--I've pulled off the casings and can only find the pipes. Does anyone know exactly where to look?

Clint Moon

Problems with bleeding radiators

Hello:

I have a forced hotwater radiator system in my house.

I noticed today the radiator in my daughters room wasn't fully heating up, that is to say it only heats up the lower half of the unit. After checking all of the radiators around the house I found 3 of 5 radiators upstairs exhibiting the same behavior. I proceeded to try and bleed them and found they won't exhale air. Even with the vent fully open it won't emit water. Is it possible these 3 radiators are somehow internally clogged preventing water flow up through the upper half the unit?

I would appreciate any information or clues you can provide to me on this.

Thanks in advance!

Clint Moon

F Reynolds

Just a thought. With everyone trying to save money on heating, is it possible a previous owner or someone turned off the valves that feed those lines? I found valves all over my basement and noted some were turned off. However, if you have been there for a while, and the heat has worked before, that is probably not the reason.

tim smith_2

no water or air

> Hello: I have a forced hotwater radiator

> system in my house. I noticed today the

> radiator in my daughters room wasn't fully

> heating up, that is to say it only heats up the

> lower half of the unit. After checking all of

> the radiators around the house I found 3 of 5

> radiators upstairs exhibiting the same behavior.

> I proceeded to try and bleed them and found they

> won't exhale air. Even with the vent fully open

> it won't emit water. Is it possible these 3

> radiators are somehow internally clogged

> preventing water flow up through the upper half

> the unit? I would appreciate any information

> or clues you can provide to me on this.

> Thanks in advance! Clint Moon

tim smith_2

no water or air

> Hello: I have a forced hotwater radiator

> system in my house. I noticed today the

> radiator in my daughters room wasn't fully

> heating up, that is to say it only heats up the

> lower half of the unit. After checking all of

> the radiators around the house I found 3 of 5

> radiators upstairs exhibiting the same behavior.

> I proceeded to try and bleed them and found they

> won't exhale air. Even with the vent fully open

> it won't emit water. Is it possible these 3

> radiators are somehow internally clogged

> preventing water flow up through the upper half

> the unit? I would appreciate any information

> or clues you can provide to me on this.

> Thanks in advance! Clint Moon



not enough pressure to get up to top of radiators, have someone adjust auto fill valve so there is adequate pressure to reach the top of system.

tim smith_2

no water or air

not enough pressure to get up to top of radiators, have someone adjust auto fill valve so there is adequate pressure to reach the top of system.

Uni R

Bleeding

Is it a single pipe system (except Monoflo)? If it is, the radiator is likely bled as a whole zone elsewhere. Try to follow the piping of that zone until you see a valve for bleeding the air.

Emily Terry

There are two pipes under the cover.

Uni R

Piping

You need to see where it goes AFTER it goes through the floor or wall to determine that. If there are no water shutoffs or air bleeding valves on your baseboard radiators then there should be a spot elsewhere on the circuit where they can be bled.