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Emptying your heating system







Emptying your heating system

If you require work carried out on your fully pumped central heating system you may want to flush the system. To exchange heating radiator valves or add an additional radiator as an example. Emptying your system is something that can be done by the none professional but competent do it yourself practitioner.

The main cause for most individuals for Flushing their central heating system is to clean the radiators. Before any work is attempted you need to switch off the water heating pump and boiler. Prevention of any extra water entering the gas heating system is also a priority.

The header water tank in the attic is used to normally top up the system with water. A common ballvalve is used in the expansion tank similar to that in a toilet. However when some water is drawn off the cystern, the ball drops, the valve opens and more water gets into the water tank. This is what needs to be contained when Flushing your radiator. Using a metal or wooden rod to stop the ball leaves are falling in the cystern will stop water getting into the system as the water is drained.

When all these precautions have been implemented, you should attach a hosepipe to the part of your metal radiator known as the outlet and run the end of the hose pipe outside. Once you vent the outlet valve the water will be able to rate of flow through the hose to the outside clean. The hosepipe needs to be connected to the lowest point in your heating system which will be one of the ground floor radiators. Before you start any other work on this central heating system you must now check that all the water has emptied out and no other the water is entering into the metal radiators.

By venting the bleed valves in the metal radiators on the top floor you will help air to enter the central heating system and hurry up the Draining process. When finished work can now start on the system.

Posted in Manuals


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