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Discuss bleeding flow and return from boiler to UFH manifold!! in the Water Underfloor Heating Installations area at PlumbersForums.net

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J

John2008

Hi, I have just installed my Underfloor heating. 4 zones in total and pressure tested after filling each loop. I have now connected up to the 22mm flow and 22mm return (new install where the plumber who installed a new boiler left these ready for me). The current system have a radiator curcuit which works fine however the UFH circuait is isolated via a manual valve on the flow and manual valve on the return. Here lies my issue, I need to purge the flow and return from each valve up to the manifold (length of pope to purge is say 20m), how do I do this? The flow should be ok by isolating each UFH loop and simply bleeding the air in the manifold, how do I bleed/purge the return?

Any help would be fantastic!!
 
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