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Hi,
I have an open vented heating system with a Stelrad ideal wlx + grundfos 15-50 pump.
When the system starts each time there is a gurgling rushing water sound until it gets going.
when the system is up and running there is occasional gurgles (like blowing down a straw into a cup of water) and sounds of rushing water or air bubbles that appear to be starting near the boiler (cant identify the exact area) and the pump then groans as the water or air passes through it.
Have bled the radiators, checked the header tank and tried lower pump settings - no joy.
The system has been emptied and refilled recently - but the problem was occuring before this aswell.
Where could it be drawing the air from?
Is it possible it is coming back in from the hot water exspansion pipe that goes into the header tank.
does this have a non return valve in the line that stops air or water going back into the system.
help and knowledge appreciated
thanks
I have an open vented heating system with a Stelrad ideal wlx + grundfos 15-50 pump.
When the system starts each time there is a gurgling rushing water sound until it gets going.
when the system is up and running there is occasional gurgles (like blowing down a straw into a cup of water) and sounds of rushing water or air bubbles that appear to be starting near the boiler (cant identify the exact area) and the pump then groans as the water or air passes through it.
Have bled the radiators, checked the header tank and tried lower pump settings - no joy.
The system has been emptied and refilled recently - but the problem was occuring before this aswell.
Where could it be drawing the air from?
Is it possible it is coming back in from the hot water exspansion pipe that goes into the header tank.
does this have a non return valve in the line that stops air or water going back into the system.
help and knowledge appreciated
thanks