Hi all, having issues with my underfloor heating . Flow doesn’t stay hot as return just stays cold even though boiler is operating as it should . My question is does an airlock reduce the flow rates ? I can get good flow 4+ ltr / min through the loops but still the return and hence flow stays cold . Heated all the radtiors up and then ran the ufh heating this got hot flow to the pump but the temp at the input of the manifold doesn’t get above 40
Any ideas ?
Any ideas ?