Hi all I have a open vented central heating system, a few weeks ago I noticed after replacing my Grundfos 15/50 pump to a 15/60 pump (to get more water pressure to pump around house have quite a few double skinned rads) that in my bathroom air was getting collected every day in the rad.
I went into the loft and discovered that air was being drawn into the system by the vent pipe when the pump was on setting two when I set on setting one there appears to be no air being drawn into the system.
My question is if I want to increase pumping pressure on my central heating system and want to place it on setting two or three into the system how can I stop air being drawn into the system ? Is there any devise I can attach to the end of the vent pipe in the f/e tank to allow venting from the system but not allow air into the system, any advice would be most appreciated as you can imagine I don’t want air in my system.
I went into the loft and discovered that air was being drawn into the system by the vent pipe when the pump was on setting two when I set on setting one there appears to be no air being drawn into the system.
My question is if I want to increase pumping pressure on my central heating system and want to place it on setting two or three into the system how can I stop air being drawn into the system ? Is there any devise I can attach to the end of the vent pipe in the f/e tank to allow venting from the system but not allow air into the system, any advice would be most appreciated as you can imagine I don’t want air in my system.