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Discuss Old un-pressurised heating system - top up valve in the Central Heating Forum area at PlumbersForums.net
In the loft I have two tanks, one much bigger than the other and both are not empty. I still wonder how I filled the system initially when it was completely drained. Intake water pipes that go into the tanks have a regular valve but also the float valves.Chances are they will be a tank in the loft
Open when filling up closed when full
The smaller of the tanks in your loft is likely the F & E tank for the central heating, which should be automatically keeping the system topped up.In the loft I have two tanks, one much bigger than the other and both are not empty. I still wonder how I filled the system initially when it was completely drained. Intake water pipes that go into the tanks have a regular valve but also the float valves.
Thanks for clarifying. Yes, the ball valve when pressed releases some water.The smaller of the tanks in your loft is likely the F & E tank for the central heating, which should be automatically keeping the system topped up.
Is the tank full, with the ball raised floating on the water, and if you push the ball down does the valve let water into the tank?
What leads you to think the water needs topping up in the first place?
I came across a mention here of someone who had a 'swooshing' sound from their hot water cylinder when the system was heating water, and one response suggested there might be air in the coil. If your air vent is on the coil, maybe it's become caked up/blocked through being open a long time, and there is air that can't get out!When the boiler kicks in I can hear the water slushing in the pipes in the area where the tank is. I don't think I could hear it before but maybe is just I am more sensitive, paying more attention to the noises coming from the heating system.
Reply to Old un-pressurised heating system - top up valve in the Central Heating Forum area at PlumbersForums.net
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