How to repressurise your boiler. I have a Worcester Bosch boiler and I know there is a safety valve which should open at 3 bar to reduce the pressure in the heating system. Just prior to Xmas last year (2008) I noticed that the pressure had dropped to below 0.5 bar. Make sure you can see the pressure gauge while increasing the pressure; this will reduce the risk of over pressurising your boiler… Thanks Laura lauraf, … However, you must set this valve to the proper limit or else it will not shut off the water supply early enough. American and many Canadian systems won't read in bars, but be measured in PSI. Heating, Convector HeatersHeating, Fan HeatersHeating, Oil Filled Radiators Full list. You could damage the boiler or cause the unit to become over pressurized by taking it out incorrectly. This video explains how to fix water pressure problems. If you notice that the pressure gauge on the front of your boiler has dropped into the red zone, it’s an indication that your boiler needs to be re-pressurised. Before you attempt to reduce the water pressure, ensure your boiler is switched off, your central heating system is cold and hasn't been in operation for at least one hour. Your ideal boiler pressure will usually be between 1 and 1.5 bar. I presume you are talking about the heating system, If you have over pressurised it yourself then you could either attach a hose to your drain off point, or use the boiler pressure relief valve (not too sure about this particular boiler but usually a red knob inside the casing with a pipe attached which runs to outside). If your boiler starts to lose pressure again, turn it off and contact a certified boiler repair person. I bleed a radiator today which seems to have reduced the pressure to zero. Low boiler pressure is another common cause of central heating problems and can often be triggered by lost water in the system. If your boiler pressure is too high, it will not work effectively. It might simply be a case of adjusting a certain valve to let more water through, filling the main pipe and increasing the amount of force it's putting on the system. Try to include as much detail as possible.) All Worcester combination and system boilers need their system pressure to be topped up with cold water from the mains at some point in their lifetime. References. howtomendit.com costs nothing to use and you can ask a question without an account or logging in. If you can’t get your boiler pressure down, then you may need to repressurise your expansion vessel, or there may be a fault with the filling loop. If your boiler’s pressure is too high, this 5-minutes guide will explain why this happens and what should be done to reduce and release the pressure from your boiler. Trying to force the valve to turn can damage it or strip the screw head. In the simplest terms, boiler pressure refers to the balance between water and air in your central heating system. 99% of the time, a boiler losing pressure is a leak. Easy to reach. This reduces the pressure in your central heating system and therefore reduces the pressure in your boiler. Reducing boiler pressure is crucial for keeping your appliance safe and sound, returning it back to its normal performance and effectiveness. Depending on the age and type of boiler, you may be able to repressurize it by using the filling key to add water or by opening the water filling valves. Step 2: Find the filling loop. Losing pressure on Worcester combi boiler? professional. How to Repressurise Your Boiler Using an Internal Filling Key. Thankfully, there are several ways you can repressurize your boiler without calling a professional. Keep reading to find… The more detail and information you provide in your question the easier it is for others to help you. How to change a pressure relief valve on a Worcester boiler. 247 Home Rescue accepts no liability for any injuries or damages you sustain following the advice on this website. If valves are difficult to turn, spray with WD 40 and wait for a few minutes. There are several ways to do this. An effective way to reduce pressure is to drain water from the system. need to reduce pressure on worcester 24cdi boiler. Want to know how to lower boiler pressure in your system by yourself? at the bottom of the boiler. In many instances work should only be undertaken by a qualified Now that you know how to diagnose your boiler, it’s time for the “fun” part. Combi boilers provide energy efficient hot water due to two main reasons. The key should fit snugly into the manifold. Please help us continue to provide you with our trusted how-to guides and videos for free by whitelisting wikiHow on your ad blocker. Check that the filling loop valves, or the key or keyless filler, are fully closed. I have a plastic key but no idea where to put it. I thought the filling loop may be passing, so I disconnected it but the same thing happened. Continue bleeding the radiator after you have expelled all the air from it until the pressure gauge returns to safe levels. Is Your Boiler Losing Pressure But No Leak? Worcester 24 cdi boiler- Reduce pressure?? If it is not, water will continue to enter the boiler and drip down. Your boiler losing pressure is an occurrence more natural than childbirth, and overtime (or, sometimes overnight) – they’re bound to lose some water (pressure) and require topping up (or, repressurised). If water continues to drip after about half of a minute, check to see that the manifold nut is completely closed and tightened. You can try to self-diagnose the problem in a few simple steps – and lower the boiler pressure: Turn off the boiler. I have a Worcester 25Si Greenstar wall hung combi boiler, installed in 2005 upstairs in bathroom cupboard. {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/b\/bf\/Repressurize-a-Boiler-Step-1.jpg\/v4-460px-Repressurize-a-Boiler-Step-1.jpg","bigUrl":"\/images\/thumb\/b\/bf\/Repressurize-a-Boiler-Step-1.jpg\/aid9295602-v4-728px-Repressurize-a-Boiler-Step-1.jpg","smallWidth":460,"smallHeight":345,"bigWidth":"728","bigHeight":"546","licensing":"