What are the main parts of a combi boiler?

A combi boiler works by using heat exchangers:

  • They have two heat exchangers inside them;
  • A primary heat exchanger.
  • Secondary plate heat exchanger.
  • Primary heat exchanger heats and recycles the water that goes through the pipes into the radiators.

What are the parts of a gas boiler?

The key elements of a boiler include the burner, combustion chamber, heat exchanger, exhaust stack, and controls. Boiler accessories including the flue gas economizer are also commonly used as an effective method to recover heat from a boiler.

What are the parts of a home boiler?

Boiler Anatomy 101

  • Aquastats. Components used to sense the water’s temperature and tell the burner when to start and stop.
  • Backflow valve. A safety device that allows water to flow in a single direction only.
  • Burner.
  • Circulator Pumps.
  • Expansion Tank.
  • Feedwater Drum.
  • Firebox.
  • Heat exchanger.

What are the 2 parts of the boiler?

Parts of Boiler and Their Function in the Boilers

  • Combustion chamber or firebox.
  • Heat exchanger.

What are all the pipes on a combi boiler?

You will find seven pipes attached to the boiler: A gas supply pipe. Mains cold water inlet. Hot water outlet.

What are the equipment accessories attached to a boiler?

There are seven main mountings on a boiler shell; safety valve, steam stop valve, vent valve, pressure gauge, water level indicator, feed check valve and fusible plug.

How does a combi boiler expansion vessel work?

Expansion vessels, also known as expansion tanks, can be found in most domestic pressurised heating systems. If you have a combi boiler, you will have an expansion vessel. This vessel contains air and water from the central heating system, and its purpose is to maintain the right level of pressure in the system.

What are the valves under a boiler?

There are also two valves: one to control the water flow (stop valve) and the other to ensure the boiler water doesn’t go back to the mains (double check valve).

Do combi boilers have condensate pipes?

What is a condensate pipe? SInce 2005, it has been a UK requirement that all gas combination boilers use condensing technology to increase their efficiency. Condensing technology allows heat existing in the flue gasses to be captured and ‘recycled’ back into the heating system to heat the water inside the boiler.

What are the causes of flame failure of boiler burner?

The flame failure trip in a typical boiler can be due to one of the following reasons: loss of ignition; fuel valve closed, unstable flame, low airflow, very high furnace pressure, dirty flame sensor and loss of electrical supply.

What are the mounting and accessories?

Mountings are water level indicator, safety valve, pressure gauge, etc. It may be noted that a boiler cannot function safely without the mountings….Boiler Mountings and Accessories

  • Boiler Mountings and Accessories.
  • Boiler Mountings. Water Level Indicator. Pressure Gauge. Safety valves. Steam stop valve.
  • Boiler Accessories.