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Gas heating systems can be drained







Gas heating systems can be drained

If you need work implemented on your fully pumped heating system you may want to empty the system. To exchange metal radiator valves or add an additional metal radiator as an example. Emptying your system is something that can be completed by the none expert but competent diy practician.

Whilst there can be a multitude of causes the most popular is to flush the metal radiators. Before any work is attempted you need to switch off the heating pump and heating boiler. Another crucial step is to ensure that no additional water enters the gas heating system whilst you are Emptying it.

Your heating system is filled up with water via the expansion or header tank. The current of water in the expansion cystern is controlled by use of a standard ball valve. Rising water levels in the water tank mean that the valve is blocked as the ball floats higher on the water surface. The valve will be opened in the water levels fall as the ball will float on the falling water surface. To ensure that the heating system fully empties we need to stop this mechanism. To prevent any more water entering the valve needs to be off.

Having prevented the entry of any water to your gas heating system you can now take the next step by joining a hose to an outlet valve on a heating radiator and running this to the outdoors of your property. The gas heating system can now empty by water flowing out of the metal radiator, through the outlet valve, and into the outside empty. Obviously, if you want to drain the whole gas central heating system you will need to attach the hosepipe to one of the level metal radiators. You must make sure before you start cleaning or replacing your metal radiator that all of the water has been drained out.

More air can enter the central heating system if you vent the top floor metal radiator bleed valves and this will help things to finish rapidly. Work can begin when all the water has drained out.

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