Radiator in converted attic

stoneill

Folks,
I have a radiator in an attic conversion - trapped air - how do I bleed the system when the radiator is one floor up from the hot press and level with the water tank?

Buford T Justice

If its a vented system, then the problem is most likely because the rad is level with the water tank

Have you tried opening the bleed valve?

Sparkpea

the bottom of the header tank must be ABOVE the top of the radiator otherwise you wont be able to heat the radiator properly if it is an open vented system, if its a pressurised system theres no problems having a radiator above the vessel.

ntpm

Sparkpea wrote: »

the bottom of the header tank must be ABOVE the top of the radiator otherwise you wont be able to heat the radiator properly if it is an open vented system, if its a pressurised system theres no problems having a radiator above the vessel.

Totally agree, The plumber should have done his sums before fitting the rad.
Sealed System is now the prefered option for most heating engineers ( plumbers).

If you have a stove or solid fuel back boiler or stove you will be not be able to convert the open vented system to a "Sealed System" (pressurised to allow water flow to attic height).

I would also suggest that the radiator pipework in the attic should have had automatic air vents AAV's fitted, this would eliviate air locking issues, but should never be used to overcome a poorly designed installation.
You can now get discrete AAV's to fit into radiators.

Sparkpea

ntpm wrote: »

I would also suggest that the radiator pipework in the attic should have had automatic air vents AAV's fitted, this would eliviate air locking issues, but should never be used to overcome a poorly designed installation.
You can now get discrete AAV's to fit into radiators.

is it one of these you mean? ive never been able to get them to work properly they have always dripped on me whether open slightly or full but they are good ideas

ntpm

Something like this:
Some Wholesalers are selling them.
Radiators:
http://boilerreplacement.net/store/energy-saving-products/10-radiator-auto-vent-standard-hv30-c.html


or a decent AAV on pipework.

Sparkpea

ntpm wrote: »

Something like this:
Some Wholesalers are selling them.
Radiators:
http://boilerreplacement.net/store/energy-saving-products/10-radiator-auto-vent-standard-hv30-c.html


or a decent AAV on pipework.

handy cheers, albeit pricey :E