locating drain point, any conventions?

[rjm2k]

I can't find a drain point for the lower part of my heating, there's one on in the airing cupboard but that's upstairs! The ground floor is wooden and the pipes come up from it so I imagine if there is a drain point it must be under the floor, is there a convention for installing drain points that will give me an idea of where to look? there's lots of tiles/laminate in the way so I really don't want to have to rip too much up! Failing that I guess I'll have to loosen a radiator downstairs and drain as much out of that as possible and/or open a pipe under the floor (which I will be doing anyway and is why I need to drain) and drain the leftovers into a small bowl or something.

I'm right in assuming that I must drain in order to move pipework, there's no way of sealing the feed from the tank and using capiliary action etc to keep the water from flowing out is there? I guess in someways it's a pointless question as I'll be putting TRVs on most of the rads at the same time.

 

[dcawkwell]

None it could be anywhere.

My advice would be drain down a radiator and then remove it.
Attach a hose pipe fitting to the rad valve and hose pipe and away you go.

 

[rjm2k]

None it could be anywhere.

My advice would be drain down a radiator and then remove it.
Attach a hose pipe fitting to the rad valve and hose pipe and away you go.

Thanks, that's the plan so far, it's just the dregs in the below floor section I'll have to bucket out or something since I'll be breaking into pipe down there.

 

[FiremanT]

Have a look outside.I always used to run a drain point through the wall for ease of drainig
Sometimes these are fitted by the house buikder, but behind a metal plate.
If you DO have to drain without a cock, try one of these, underfloor, then run a pipe to outside, below floor level.

http://www.bes.co.uk/products/123.asp

Scroll down to 6th item

 

[rjm2k]

You mean this?

or the self cutting valve?

Anyway, running anything out below floor level is going to be difficult without hacking a hole somewhere Think the only way will be to get as much out of the rads as I can then a bowl under the floor!

I'll have a look for a hidden drain outside first though thanks