Cleaning a fully pumped gas central heating system
Cleaning a fully pumped gas central heating system
A fully pumped gas central heating system can be emptied to enable work to be executed. To exchange radiator valves or add an additional heating radiator as an example. Your heating engineer will normally be performing list has although some householders do have the confidence to try this themselves.
The main cause for most people for Cleaning their central heating system is to clean the radiators. Before any work is undertaken you need to turn off the heating pump and heating boiler. To successfully finish this chore you also need to see to it that no more water enters the gas central heating system.
Your heating system is topped up with water through the expansion or header water tank. This has a ball-valve that is the same as the one seen in your toilet cystern. The ball floats on the water surface raising a metal lever shutting down the valve when the water has reached the correct level. If water level falls the ball, floating on the surface, also falls opening the valve and letting more water into the central heating system. This is what needs to be contained when Emptying your radiator. A good way to do this is to prevent the ball moving by connecting it to the top of the cystern.
Now take a hose emptying into an external flush and attach this to the outlet valve on the bottom of your metal radiator. Water can now enter the outside drain my flowing through the hose out of the heating radiator valve. To drain your whole gas central heating system you need to connect this hose to one of the ground floor heating radiators, the lowest ones in the house. Check now that no water is getting in the heating system and that the radiators are fully drained before you do any further work.
By opening the bleed valves in the heating radiators on the top level you will help air to enter the heating system and quicken up the Cleaning process. When completed work can now start on the system.