The system should be pressure tested using a hydraulic pressure test kit before laying the screed or covering with the chosen floor covering.
Shut both of the isolate ball valves.
All flow and return valves to the UFH loops must be open. Connect a pressure pump to the hose union.
Using the pressure tester, pressurise the system to 2 Bar for 10 minutes and then 6 Bar for 10 minutes,
After testing, the system should remain pressurised at 6 Bar throughout the screeding and curing process. This is in accordance with BS EN1264 Part 4