How Does Gas Boiler Work? Know More about Its Mechanism before Buying

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nikolay medvedev

What is a boiler? This is a special tank, where water is heated in order to provide the needed warmth. Water in the system is heated to the definite temperature and then plumped through special pipes right to radiators. This is how warmth is produced. Today the majority of those heating systems that use boilers are hot water systems.

how does gas boiler work

Large and old homes have steam systems, which are also an excellent way of keeping the home warm. So, how does gas boiler work?

What Are the Principal Components?

The main components of a gas boiler system are burners, the gas supply, a water tank (which receives heat from burners) and a pilot light (which ignites burners). A gas-fired boiler can work in two ways:

  • heating water to 93°C
  • converting water to steam

Does It Actually Boil Water?

How does gas boiler work? This unit doesn’t boil water itself, of course unless there is a steam system. The appliance uses gas – natural or propane – to heat the liquid. When heated, a special pump pushes water through a number of pipes, which then deliver it to the house.

When there are hot radiators, the circulated water gives off the heat into rooms. If you consider having a radiant floor system, the floor will heat the air from the ground up. The water will expand, blowing up the pipes, pumps and valves, and the water tank will allow a very safe release of pressure. Radiant heat can heat anything in the room; this ensures a quite comfortable temperature for people in their homes.

If the components function in a proper way, the system runs itself, but still one should make sure that there is sufficient amount of water circulating through the system. In case of correct volume, the internal pressure is about 96.5 kPa, but when it drops, there is an automatic filling system that adds water until there is a signal that everything’s fine.

An expansion tank can easily maintain the level of volume of air and water in order to prevent boiling. It looks like a propane tank that is used for barbeque powering. Actually, this is one of the most important parts of a boiler. If you heat up water in a kettle, you know how it works. When the liquid gets hot, it starts expanding and pushes the air out of the kettle. This makes a squeal that informs you that the water is hot. The pump helps to keep cool water from radiators and baseboards flowing to the boiler, where it is reheated and then pressured back to the rooms.

When there is too much air, the oxygen holds the heat from the burner and releases it either through a vent pipe or chimney, which reduces efficiency levels. This is when much heat is really wasted. The case is possible with non-condensing boiler models, as the combustion chamber is not sealed. Besides, most new boiler models are referred to as condensing because this chamber is sealed to prevent carbon monoxide intrusion and heat loss.

Now you know the answer to the question ‘how does gas boiler work’. Look for an A-level efficient gas boiler to have hot water whenever needed and save money.