22 Manifolds Manual
3.Closethesupplyandreturnvalve;alsoclose
all group valves.
4.
Connectallinghoseandstartthelling
byopeningthewaterandllingtap.
1. Ensure that there is no power on the pump
untilthesystemiscompletelylled.
2. Remove the cover cap from the return
valve.
6.4Fillingandventingtheunderoorheatingsystem
Installing/mounting