How to Control a Radiator
- 1). Turn off the boiler so the heating system can cool down. Wait at least two hours for the water in the heating system to cool.
- 2). Open the lockshield valve positioned on one side of the radiator. The valve may be hidden under a cover that you will need to remove. Place the adjustable spanner on the valve and turn it clockwise to open the valve.
- 3). Place the adjustable spanner on the control valve that is positioned on the opposite side of the lockshield valve. Turn the adjustable spanner clockwise to open the valve.
- 4). Repeat Steps 2 and 3 for all the radiators in your heating system.
- 5). Place a radiator thermometer on the water inlet and outlet pipes on the radiator closest to the boiler.
- 6). Turn on the boiler and let the water heat.
- 7). Close the lockshield valve on the radiator that has the thermometers attached, then wait for the boiler to heat the water.
- 8). Slowly open the valve until the temperature difference between the two thermometers is within 20 degrees.
- 9). Take the thermometers off the radiator and repeat Steps 5, 7, and 8 on the rest of the radiators until they all have been balanced.
