Tips to clear a gas central heating system







Tips to clear a gas central heating system

At some point in the lifetime of your fully pumped gas heating system you will wish to drain it. To exchange metal radiator valves or add an additional radiator as an example. Emptying your system is something that can be completed by the none professional but competent do it yourself practitioner.

In most circumstances Cleaning the central heating is implemented to clean the heating radiators. Before you do anything to the actual radiator you should switch off the gas fired boiler and any gas or electric that supplies the gas boiler. To enable the system to completely clear you will need to check that no water is coming in the gas central heating system.

The central heating system has a header or expansion cystern in the attic which will ensure that any water shortfall is filled up. A common ballvalve is used in the expansion cystern similar to that in a toilet. As the water level rises the ball floats on the surface and shuts off the valve. Water is added to the gas heating system if the levels fall as the ball will drop on the water surface opening the valve. To fully flush the gas central heating system this top up process will need to be stopped. Using a metal or wooden rod to stop the ball leaves are falling in the cylinder will stop water entering the system as the water is drained.

Now take a hose emptying into an outdoors clear and attach this to the outlet valve on the bottom of your metal radiator. Once you open the outlet valve the water will be able to current through the hose to the outside clean. Obviously, if you want to clear the whole gas heating system you will need to attach the hosepipe to one of the level heating radiators. You now need to be diligent and check that all the water has discharged out and that no more water is entering before any other work is executed on the heating system.

By opening the bleed valves in the heating radiators on the top floor you will enable air to enter the gas heating system and speed up the Emptying process. When the water is drained off you are clear to work on your heating radiator.

Posted in Installation


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