You change a radiator's flow by adjusting the radiator valve, which controls how much hot water enters the radiator.
Here's a breakdown of how to do it:
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Identify the Radiator Valve: Most radiators have a manual valve, usually located on one side of the radiator at either the top or the bottom.
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Understand the Valve Markings: These valves typically have numbers (often 1 to 6) or symbols. A higher number or symbol generally indicates a greater flow of hot water and, therefore, a hotter radiator.
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Adjust the Valve:
- To increase flow (make the radiator hotter): Turn the valve towards the higher numbers or symbols.
- To decrease flow (make the radiator cooler): Turn the valve towards the lower numbers or symbols.
- To turn the radiator off completely: Turn the valve to the lowest setting, which is often a "0" or a snowflake symbol.
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TRVs (Thermostatic Radiator Valves): Some radiators have thermostatic radiator valves (TRVs). These valves automatically adjust the flow of hot water based on the room temperature. You can set the desired room temperature on the TRV, and it will regulate the flow accordingly.
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Lockshield Valves: At the opposite end of the radiator from the main valve, you'll usually find a lockshield valve. This valve is primarily used to balance the heating system and should generally not be adjusted unless you know what you are doing or are instructed to do so by a heating professional. It's typically covered with a plastic cap.
In summary, changing a radiator's flow involves adjusting the manual radiator valve or using a thermostatic radiator valve (TRV) to control the amount of hot water entering the radiator, thereby influencing its heat output.
