flow and return

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flow and return

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nalnacs
Junior Member

Joined: 08 Mar 2008
Posts: 5

Posted: Fri Mar 21, 2008 7:44 pm Post subject: flow and return

Hi fella's
this may be a stupid question, but, how do i determine which is the flow and which is the return, i have two pipes coming from the ceiling that used to service a rad, and want to join into them, is it a floorboard up job?
Thanks
Steve

thescruff
Senior Member

Joined: 10 Mar 2008
Posts: 5665
Location: Bath

Posted: Fri Mar 21, 2008 9:08 pm Post subject:

Short of following them you could turn the boiler on and see which gets hot first.

If you have drained the system, and cut the pipes, you could disconnect the zone valve and blow down the pipe, you would have to turn both valves off on all the rads, and it's not a 100%.

If you use by-directional valves its not that important

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