The easy solution for energy saving
What's a valve?
The valve is a simple tap that regulates the flow of hot water in and out of the radiator, regulating the temperature of the room.
There are two types of valves: non-thermostatic (manual) and thermostatic (TRV).
The TRV controls the radiator's temperature by sensing the room air temperature and automatically opening and closing the flow to the radiator to maintain a preset temperature.
A manual valve maintains the temperature of the radiator regardless of how warm the room is.
Thermostatic valves are now a requirement of building regulations; check with your installer if you have the correct valves. Thermostatic valves can be installed on all radiators, without the need for special adaptations.
In a radiator there are two types of valves: the wheelhead for the water inlet and the lockshield for the outlet.
The wheelhead valve controls the temperature; the lockshield valve is used to balance the radiators in the system so that they all heat up at approximately the same rate. Put simply, without the lockshield, the closer the radiator is to the boiler, the faster it will heat up. So the lockshield valves should be set more open the further away from the boiler the radiator is.
The thermostatic head, if there is one, will work best if it is mounted on the flow/inlet side of the radiator.
What's a thermostatic head?
The thermostatic head is a device installed on a radiator that allows you to automatically regulate the flow of hot water to that radiator. The head will increase or decrease the flow of hot water to the radiator depending on the ambient room temperature. You can set the valve to remain open until the desired temperature is reached. When the temperature drops, the valve will open again.
The main element of the thermostatic head is the control "motor" containing a specific thermostatic liquid. The liquid will expand or contract depending on the room temperature. If the temperature in the room is higher than the preset one (e.g. 20° C) on the valve, the thermostatic liquid will increase in volume causing the actuator (cylindrical body similar to a plug) to move, closing the valve which in turn reduces the flow of hot water into the radiator. If the ambient temperature is lower than the set temperature, the reverse process occurs, and the valve opens and the radiator will heat up.
The advantages of thermostatic heads
Thermostatic heads help to reduce waste and improve comfort by stabilizing the temperature in each room as required.
Thermostatic valves are now a requirement as part of Building regulations, check with your installer to make sure you have the correct valves.
They are a very smart solution because they allow you to improve the level of energy consumption related to heating and consequently can provide a significant saving on the gas bill.
Correct use of thermostatic heads
Keep the thermostatic head as free as possible, (the room temperature sensor must be able to detect the temperature inside the room). Remove anything that prevents normal air circulation near the radiator (curtains, furniture, radiator covers, shelves).
Remove any heat sources (such as ovens or stoves).
Close the valve when you have doors or windows open, keeping windows open and your heating system on at the same time wastes a lot of heat and money!.
Leave the head fully open at position 5 during the summer period, so as to avoid the formation of limescale and the consequent blockage of the head.
Leave the valve on 1/2 in rooms that are not in use or if you leave the house empty for a few days.
How to distinguish a normal valve from a thermostatic valve?
Most thermostatic radiator valves have numbers, graphics or other control buttons, manual valves usually have no numbers or buttons.
There may be signs such as plus and minus (or on/off) indicating the direction in which you need to turn it to open or close it.
To understand if a valve is manual or thermostatic, simply unscrew the valve knob, if it has a piston that can be pushed in, then you can be sure that the valve is thermostatic. Replacing a manual valve with a thermostatic head will allow you to better adjust the room temperature in order to ensure better comfort, energy saving and reduce CO2 emissions.
Certification of thermostatic heads
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To ensure optimum operating performance and to avoid unnecessary costs and degradation, certified thermostatic valves meet the following specifications (proven by the KEYMARK certification scheme): |
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DISCOVER HOW TO MOUNT THERMOSTATIC HEADS ON YOUR RADIATORS
