Dear all, I have had my UFH designed and priced by Wunda ( recommended) but it did not include the feed from the ASHP/ buffer tank which is some 9 meters away. They have told me it needs to be in 22mm plastic or coppper. The floor is 100mm concrete ( with the pipes in strapped to steel mesh) on top of 300mm EPS, I would like to run the feeds within the EPS but should it be within a conduit or two conduits for separation ( heat transfer hot to cold) does not happen. Any tips greatfully received.