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Draining central heating systems before further work

Draining central heating systems before further work

A fully pumped gas central heating system can be emptied to enable work to be executed. To totally flush the system of gunk and contaminants might be one such instance. Emptying your system is something that can be done by the none expert but competent diy practitioner.

Most often cleaning the radiators is in the main cause for performing at this task. The first step you should take is to turn off the gas boiler and water heating pump. To successfully finish this chore you also need to guarantee that no more water enters the gas heating system.

The central heating system has a expansion cylinder in the attic which will ensure that any water shortfall is filled up. The expansion water tank uses a ball-valve similar to that in a toilet system. As the water reaches maximum level the ball floats on the surface and shuts the valve. If water level falls the ball, floating on the surface, also falls opening the valve and allowing more water into the heating system. Water will need to be prevented from entering the central heating system if the Cleaning process is to complete. To prevent any more water getting in the valve needs to be off.

Now take a hosepipe emptying into an outside flush and attach this to the outlet valve on the bottom of your metal radiator. Water will now passage out of the heating radiator through the hosepipe into the outside flush. Obviously, if you want to empty the whole gas central heating system you will need to attach the hose pipe to one of the level metal radiators. Before you commence any other work on this gas central heating system you must now check that all the water has emptied out and no other the water is entering into the radiators.

By venting the bleed valves in the heating radiators on the top level you will help air to enter the gas heating system and speed up the Emptying process. When the water is emptied off you are clear to work on your heating radiator.

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