Underfloor heating drain down?

[xr4x4]

Just thought of a question..

How do you drain a underfloor heating system?

As i guess in most cases the boiler is higher than the pipework?

 

[Dan Robinson]

Normally you don't. Why would you need to?

You can drain to the manifold. Otherwise water had to come out from a leak.

I suppose an air compressor can partially clear the pipes, but....

 

[xr4x4]

to clean/flush it?

 

[Dan Robinson]

A mains water blast will have to do.

 

[Fluffster]

To flush it attach a mains feed to the top manifold and flush it out of the drain valve on the lower manifold bar.
Do each loop in turn and then shut off and go to the next.
Pete

 

[xr4x4]

cool cheers guys.

i guess its not common practice to fit a low level drain point then?

 

[Norcon]

Its not practical so its not done.

 

[Agile]

If anyone really wanted to drain UFH pipes then the water can be pushed out with an air compressor at about 2 Bar.

It takes longer but a sucking VAX can also be used if its got a good suck!

Tony