Boiler System Components and What Do They Do?
boiler systems

Boilers are powerhouses for warming up buildings, and today’s systems are much more energy efficient than their predecessors. When you have one of these units installed and maintained by a reliable and experienced commercial HVAC company, you can rest assured that your boiler will last for years.

Types of Components Found within a Boiler System

Each type of boiler has a different combination of components, but all of them have a burner, combustion chamber, and heat exchanger. Here is a list of boiler components and their functions within the system:

  1. Burner: This is where the mixing of air and the fuel source happens resulting in the combustion which provides the necessary heat to heat up the water.
  2. Combustion chamber: The burner creates combustion in the chamber that heats the heat exchanger. Most commonly used fuel is natural gas but the boiler could also use oil or liquid propane.
  3. Heat Exchanger: The heat from the combustion in the chamber passes through the heat exchanger to heat the water in the tank without any direct contact.
  4. Ignition/Flame failure Control: This control initiates the ignition process on a demand from the operating control and monitors the burner flame during the trial for ignition process and during operation will shut of the fuel supply to the burner if a flame failure is detected.
  5. Operating Control: A temperature control that cycles the burner off and on or modulates the burner to maintain the temperature setting of the control.
  6. Circulating pump: The pump maintains water flow through the boiler to be heated and circulated to a variety of heating components such as convection heaters, coils in air handlers or in floor heating coils. Boiler can also be used to provide domestic hot water for use in kitchens and washrooms.
  7. Backflow Preventer: This is a safety valve designed to only allow fresh water to flow in one direction into the boiler system.
  8. Low water cut off Control: This safety device is designed to stop the boiler operation if the water in the boiler falls below the safe operating level of the boiler.
  9. Expansion Tank: As water is heated, it expands and the expansion tank provides a place for the water to go when heated, preventing excessive pressure from building up in the system.
  10. High pressure relief valve: This valve will open and purge water from the system if the pressure in the system exceeds the pressure setting on the valve. The valve can come in a variety of settings. Some valves also come as a combination temperature and pressure valve.
  11. Boiler Venting: Proper venting of a hydronic boiler is critical for the safety of the occupants and operation of the boiler, as well as to ensure that the products of combustion are properly vented out of the building. 

Choose an Experienced HVAC Company for Your Boiler System Needs

Stop fretting over maintaining an antiquated boiler system! Bring in the knowledgeable technicians from TRI-AIR to handle all your routine, corrective, and emergency HVAC needs. Sign up for a scheduled maintenance program. We have served the area for over 40 years and stand ready to help you with one phone call. Enjoy outstanding service when you contact us today.

Call us at 905-470-2424 or contact us online for your energy-efficient commercial and industrial boiler system installation, service, or repair.

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