Does it matter which side thermostatic valve on radiator?
Does it matter which side thermostatic valve on radiator?
The vast majority of new TRV’s are bidirectional and can be fitted to either the flow or return, but it is always good practice to fit them to the flow side. If a non bidirectional TRV is fitted on the return side it will create a vibrating sound as the water tries to flow though it.
What are the arrows on radiator valves?
Until about 1995 all thermostatic radiator valves were uni-directional. They were made with a single-headed arrow which marked the direction of flow. They had to be fitted so that the water passing through them followed the direction of the arrow. This meant that they were normally fitted to the flow pipe.
How do Honeywell thermostatic radiator valves work?
The thermostatic valve head goes on top of the valve body. And as the room temperature changes, the valve head expands, adjusting a pin in the valve body so that it opens or closes. Expansion as the room heats blocks the valve body to receive less hot water into the radiator.
Which side of radiator is flow and return?
left
The flow of a radiator is typically on the left as you look at it stood up or attached to the wall. For a detailed look at all different types of radiators, explore the BestHeating Radiator Buying Guide.
How do you find the flow side of a radiator?
Turn off the heating until it is cool. Turn it on and aim the laser alternatively at the two tails. The one that heats fastest/first is the flow.
What do the symbols on radiator valves mean?
Radiator valves have numbers or symbols to represent how much heat the radiator is putting out. Normally, these numbers range from 1 – 6. Turning the valve to 3 should give you a room temperature around 20°C. Each number above or below then represents a single degree.
Is the thermostat on the flow or return?
Most modern thermostatic radiator valves are bi-directional – so can be fitted on either the flow or return pipe of your radiator. However, it’s always best practice to fit the TRV on the flow pipe that enters your radiator.