A boiler is a closed vessel, which is filled with water or other fluid for heating. The heated liquid vaporizes and then exits the boiler for to be used for various processes of some heating applications.
The pressure vessel inside the boiler is made of steel, or sometimes it is made of wrought iron. Stainless steel is never used for boilers, but it is usually used for the superheater section of the boiler.
In the live steam models, brass or copper is used for the firebox because it has higher thermal conductivity. However, the higher price of copper often makes it an uneconomic choice and cheaper substitutes are available.
In the Victorian age, the only material used in for boilers was the highest grade of wrought iron. In the domestic water heaters, cast iron is used. These types of heaters are also known as boilers, but they just produce hot water and not steam, and so they run on very low pressure.
The brittleness of the cast iron makes it impossible for the boilers to function properly. Earlier, boilers were the cause of many serious injuries and various property destructions due to poor engineering. The brittle and thin metal shells would rupture, while the poorly welded seams would open up, which lead to violent eruption of the steam. The large boiler explosions would demolish the entire building.
Sometimes, due to some problems in the boiler, it can stop functioning properly. Here are some simple steps on how to repair boiler.
How to repair a home boiler
Steps:
- If there is no heat coming from the boiler, light the pilot light. Mostly, the boiler stops working because the pilot light has blown out. Once you re-lit the pilot light, give sometime for the boiler to heat again.
- Keep a check on the amount of heat that comes from the radiator. If you know that there is enough heat, but not as much as before, then there is a problem with low pressure. (Check the pressure of the boiler’s pressure gauge, once you get a reading of 12 psi. If the reading is below 12 psi, then you will have to add some
- Check the floor around the home boiler. If you see that there is a leakage in the boiler, then check the pressure gauge and see if the pressure is too high (above 15psi). If the pressure is high, then you will have to empty the water out of the boiler, and see if the pressure gets back to normal (that is 12-15psi) .
- Check the radiators around your home and see if they need repair. If some of the radiators are emitting heat and some are not, then your boiler is leaking air from the pipes. You will have to release the valve which is there at the top of the radiator to relieve some of the pressure. Close it immediately if you see some water coming out.
- Make sure to check that the bolts on your pipes are secured tightly. Schedule a maintenance service for your boiler every year, so that you it stays in good condition.