How to bleed a radiator in a commercial heating system

In commercial buildings, maintaining an efficient heating system is crucial for ensuring a comfortable environment for employees and customers. One common issue that can arise in these systems is trapped air in radiators, which can hinder their performance and prevent optimal heat distribution. Fortunately, bleeding a radiator is a simple and effective solution to this problem. In this article, we will guide you through the process of bleeding a radiator in a commercial heating system, helping you keep your heating system running smoothly and efficiently.

Step 1: Identify Radiators in Need of Bleeding Before starting the bleeding process, it’s important to identify which radiators in your commercial heating system require attention. Generally, radiators that feel cold at the top while the bottom remains warm are likely to have trapped air and need bleeding. Check each radiator individually and mark the ones that require bleeding.

Step 2: Gather the Necessary Tools To successfully bleed a radiator, you’ll need a few tools on hand. Gather the following items before you begin:

  • A radiator key or a flat-headed screwdriver (depending on the type of bleed valve on your radiators).
  • A towel or cloth to catch any water that may escape during the bleeding process.
  • A small container to collect any water released during bleeding.

Step 3: Turn Off the Heating System Before bleeding the radiators, it’s essential to turn off the heating system. This precaution prevents any potential burns from hot water and allows the system to cool down.

Step 4: Locate the Bleed Valve The bleed valve is typically located at the top corner of the radiator, often on the side or at the back. It is a small square or hexagonal-shaped valve with a small pinhole or slot in the center. Place the towel or cloth below the bleed valve to catch any water that might spill.

Step 5: Release the Trapped Air Insert the radiator key or screwdriver into the bleed valve and gently turn it counterclockwise. Be careful not to force it or turn it too much, as this may damage the valve. As you turn the key, you should hear a hissing sound as the trapped air begins to escape. Continue to slowly turn the key until water starts to trickle out consistently.

Step 6: Collect Excess Water Use the small container to collect any water that flows out of the bleed valve. This will prevent water from dripping onto the floor and causing a mess. Be cautious, as the water may be hot.

Step 7: Close the Bleed Valve Once you have bled the radiator and the water flows smoothly without any air bubbles, it’s time to close the bleed valve. Turn the key or screwdriver clockwise to close the valve. Ensure it is tight enough to prevent any water leakage.

Step 8: Repeat the Process for Other Radiators Continue this process for each radiator that requires bleeding in your commercial heating system. Start with the lowest level radiators and work your way up to the higher floors.

Step 9: Switch on the Heating System After bleeding all the radiators, it’s time to switch on the heating system again. Allow it to warm up and then check each radiator to ensure they are distributing heat evenly. If any radiators still exhibit cold spots, consider repeating the bleeding process or consult a professional for further assistance.

Bleeding radiators in a commercial heating system is a straightforward task that can significantly improve the overall performance and efficiency of your heating system. By following these simple steps, you can remove trapped air from your radiators, allowing them to operate optimally and maintain a comfortable environment for everyone in your commercial building. Regular maintenance and bleeding of radiators will contribute to a more efficient heating system and lower energy costs in the long run.

Contact Burnn Boiler in Minnesota, North Dakota and South Dakota today to speak to an expert to have your commercial boiler serviced or repaired.