How To Bleed Hot Water Boilers

Hot water boilers are popular to use in certain types of climates that people live and work in. In order to prevent any damage and the cost you have to make in order to fix any parts you need to know how to take care of it. In most cases problems will occur directly in the radiators.

Touch the radiator to see how it feels. It is hot on the bottom – but cold on the top? This is a problem. You need to bleed it so that it will start to work again. This process is fairly simple to do and will take around twenty minutes. You will need to use a rag, small bowl, water, and a bleed key.

Turn of the power to the boiler via the main switch. This switch is situated near the boiler and should be easy enough for you to spot it.

Place the bleed key into the bleed valve that is on the top of the unit. The valve will look like a small brass screw that is recessed in the edge of the radiator or like a small screw that is situated in the knob on the side of the unit. You will either need a regular or allen screw.

Cover the bleed key using the rag and place the small bowl underneath it on the floor. This will keep you from being burned when the water comes out.

Turn the key counterclockwise about a quarter of an inch. This will create a type of hissing noise when the air comes out. Wait until the noise has subsided and a small amount of water is coming out of the valve. Turn the key clockwise and close it.

Look at the boiler and check the bar gauge that is on the top. If it is less than one bar you will need to add water to the boiler. Do this until there is a complete bar.