how can i prevent this? Ive turned pump down to lowest speed. Vent is on suction side of pump about 3.8m below header tank. CH feed enters system at first floor about 2.6m below tank. Is a non return valve the answer??
Im new to this but hope someone can help? My central heating systerm is an open vent which connects into the suction side of my pump about 3.8m below the header tank. The feed from the header tank is at first floor about 2.6m below tank. I have turned my pump speed down to 1 but still get air...
