How To Install Thermostatic Radiator Valves

A thermostatic radiator valve gives you more than automation over the temperature at your home. To that, the device lowers your monthly energy bills. The fitting process is fast and unproblematic, but at that place are some details you need to know to avert damages.  Follow this guide to learn an easy method on how to fit a TRV to your radiator.

What is a Thermostatic Radiator Valve?

A thermostatic radiator valve (TRV) is a device fitted to your radiator pipework that will individually control the temperature in the room past setting the estrus output of the radiator it's fastened to. There are ii main types of thermostatic radiator valve. One uses a spring that expands and contracts, and the other uses a wax jacket that does exactly the same.

What'due south The Difference Between a TRV and Transmission Radiator Valves?

First, a normal radiator valve is just a valve that moves upwards and downward and shuts off the period of hot water from the boiler into the radiator, just like the tap on a bath tap. The main difference with a TRV is that information technology automatically controls the amount of hot h2o inbound a radiator based on the temperature in the room. The installation process of a transmission radiator valve is similar.

How Does a TRV work?

For this example, we are going to expect at the spring type TRV, but the wax jacket version is fitted similarly. So we have a metal spring that is very susceptible to the surrounding temperature. If the room is cold, the metal jump will contract. Therefore, the valve jumper opens and hot water is immune to catamenia into the radiator. If the room is warm, the spring will expand pushing the valve down, and the flow to the radiator volition stop.

A common trouble may be a common cold room. Although the radiator is blazing hot, you may withal want to go to the thermostatic radiator valve and open up it up more. That'southward of no use because the radiator valve is withal trying to oestrus information technology up. Adapt the TRV if y'all experience that the radiator remains cold.

Where Should I Fit a TRV?

Many thermostatic radiator valves nowadays are bidirectional, and you lot can install them to either the flow or the return pipage of your radiator. Nevertheless, nosotros would advise you to fit the TRV on the pipage that carries water to your inlet valve – the flow piping. Wonder why? Well, if you mount a non-bidirectional thermostatic valve to the return pipe, you would later discover that a noisy, vibrating sound comes out of information technology while the water rushes through.

Also, in a belongings with 2 rooms, i requires a room thermostat that controls the entire heating system and a single radiator. The other room has a second radiator with a TRV attached to it. Refrain from fitting a TRV on the radiator that has the room thermostat. The two together won't work as expected, and you lot won't salve enough free energy.

The room thermostat needs to have an exact reading of the maximum chapters of the heating arrangement. Therefore, the radiator which has a room thermostat should have a fully open up lockshield valve. A heating engineer can survey your dwelling house and offer professional expertise on the matter.

How to Fit a TRV?

Allow's find out how you modify or install a new thermostatic radiator valve in 3 steps:

one. Drain your system and permit the air out

Drain down your heating system and allow air into all the radiators, where you programme to install TRV'due south. Bleed your radiators with a drain cardinal and a hose. Once the water stops running, you are set to remove the onetime valve.

two. How to remove the old valve

Pull the top cover off to reveal the simple on/off valve. Using grips and an adjustable spanner, slacken off the nut that is coming out of the radiator pipework. Once it'south loose, you tin slip the pipework out to run into if all the h2o has drained out of the system. Next, loosen off the 15mm pressure fitting on the lesser of the valve. You can then remove the whole valve from the radiator piping.

3. Plumbing equipment the new thermostatic radiator valve

Sometimes the new TRV won't fit on the electric current valve insert. They supply all new TRVs with a new insert, so y'all may take to remove the old ane. Insert a elementary hex tool into the hole and then use an adjustable spanner to loosen the function. Now wrap a PTFE around the new insert, push information technology into the radiator and tighten information technology upward. The onetime nut and olive should exist fine to use, only if yous want to modify those, just pull the nut off and utilise a pair of grips to pull the olive.

Wrap a bit of PTFE around the new olive to ensure a watertight seal. Push the fitting dorsum in and tighten upward the bottom joint. Make sure everything is tight and remove the top plastic cap of the valve. Y'all can examination if information technology springs up and down the right way. Put the TRV head unit on the top and adjust information technology. You lot should now accept a working TRV.

Takeaways

Whether changing or plumbing fixtures a thermostatic radiator valve, the procedure may go difficult, especially to someone with no prior knowledge. We strongly recommend that piece of work of this nature only exist attempted by a qualified Gas Safe/Corgi registered plumber. Performing this type of task as DIY tin lead to other issues such as leaks, airlocks and central heating failure, so don't hesitate to ask for help from a radiator installation expert.

How to Fit a TRV – Thermostatic Radiator Valve

Need assistance? Rent the London Holding Service experts today by giving us a call on 020 3078 5920.

Source: https://my-plumber.co.uk/blog/how-to-fit-a-thermostatic-radiator-valve-trv/

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