. 7. If it takes longer than this, you could have a leak in the system. The key to a well-performing boiler is regular check-ups and taking the necessary maintenance measures, which include re pressurising your appliance when needed. You will often find internal filling loops within the boiler itself, sometimes also called a combi boiler filling loop as they are most commonly found in combi boilers. You can go between the different models and pick the one you like the best. It will always save you money in the long run. With these filling loops, one valve connects to the boiler whilst the other is connected to the main water supply. With a proper illustration, you dont have to fumble your way to the isolation valve. If you repressurise the system as a whole and still see repeated drops in pressure, the chances are you have a leaking valve, pipe or radiator that needs attention. Afterwards, make sure everything is correct and in place and this should be completed. The steps for repressurising a boiler using a filling key instead of a filling loop are slightly different: 1. Heres what to do if thats the case. *Based on installing a new A-rated condensing boiler in England, Scotland and Wales with a programmer, room thermostat and thermostatic radiator controls (TRVs) in a gas heated detached home from an older G-rated boiler with a programmer and room thermostat. Locate the cold water mains valve and the heating systems valve. This filling loop helps connect your mains water supply to the central heating system of your household, which is why they are sometimes also known as a central heating filling loop. First of all identify what sort of filling system you have and then follow the instructions, or watch our technical trainer show you how its done. Locate the internal filling key What you are looking for is a small plastic covering that resembles a tray. I live with a disabled family 2008-2023 MyBuilder Limited With low operating costs, they are small appliances with a neat appearance which can be installed practically anywhere. If hard water and scale buildup inside pipes is potentially a problem in your area, this could also cause pressure fluctuations if a pipe is partially blocked. An external filling loop hose is braided with compression fittings on each end. When it isnt it should be turned off and disconnected until the next time you repressurise your boiler. When the tap is opened this will introduce cold water into the system and the gauge will start to rise (quarter turn). They have to line up with the, position of the manifold. ","acceptedAnswer":{"@type":"Answer","text":"Yes, you certainly can. You can typically find internal filling loops in. You dont want to be left without hot water or heating. Once youre ready, you can use the following steps to complete the process: There are two types of filling loop: external and built-in. Before getting stuck in, its a good idea to check your boiler manual for instructions on how to re-pressurise your combi boiler and whether you can do this yourself. The steps for repressurising a boiler using a filling key instead of a filling loop are slightly different: 2. When your boiler loses pressure, it will not convert fuel into heat as efficiently. Credit is provided by Novuna Personal Finance, a trading style of Mitsubishi HC Capital UK PLC authorised and regulated by Financial Conduct Authority. One end should be connected to the cold water feed with the other end needing to be connected to the system.Step 3 - There may be a cap on the end of the valves remove the cap either with a spanner or with your fingers if you are able to do so.Step 4 -- Connect the flexible hose to valves and make sure the filling loop is connected and tightened by hand to allow the repressurising to begin.Step 5 - To fill the system, locate the taps to open the filling loop. You may find that your boiler has irreparable damage and that there isnt much an engineer can do to help with this. By re-pressurising your boiler, youre allowing more water to enter the system from the mains supply. For the most part, you can tell by what type of boiler you have. We have an excellent team of heating engineers and plumbers who are ready to help you get your central heating in tip-top shape. This feature is put in place to help repressurise your boiler when needed to get it to the correct level that is required for an effective boiler. We all love to stay cosy and warm at home no matter the season. Turn the boiler on and check to see if it is now working correctly. You are on the UK website of the Viessmann group. When the pressure is at 1.5 bar, close the valve with the spanner and remove the key by turning it to the lock position. 5. Then, close both valves, one at a time. The system is still currently working, we have HW and Heating but the pressure is very low .5 bar. Activate your system. For this, you will probably need to get your boiler serviced by a Gas Safe registered engineer, so they can examine it and see what is wrong before a breakdown. https://www.homebuilding.co.uk/advice/how-to-repressurise-a-boiler, https://heatingforce.co.uk/blog/how-to-repressurise-a-boiler/, https://www.britishgas.co.uk/home-services/boilers-and-heating/guides/boiler-pressure.html, https://www.youtube.com/watch?v=23vahQHOnGo, https://singletrackworld.com/forum/topic/low-pressure-in-boiler-but-no-filling-loop/, {"@context":"https://schema.org","@type":"FAQPage","mainEntity":[{"@type":"Question","name":"Can you repressurise a boiler too often? Savings will vary depending on the size and thermal performance of your home. Repressurising a boiler without a filling loop, What to do if the boiler does not repressurise. Use a spanner or wrench to turn the valve next to the filling key until you can hear water flowing through it. Our Purpose: We create living space for generations to come. How to repressurise a boiler Switch off. However, there are two main ways to top up your boiler, either via an external filling loop or an internal filling loop (either keyed or keyless) - and both methods are demonstrated in the video and the step-by-step guide below. This should be enough water to get your combi boiler back up to pressure again. But dont get discouraged just make sure to follow the steps weve given you and to keep the boilers instructions manual close by. If youve tried everything we described in this article, and nothing helps, we suggest hiring a certified technician to inspect your water heating appliance. This will start to increase the pressure gradually. As a general guide, follow these steps: 1. Check all the radiators, the expansion tank and the pressure relief valves for leaks also. Given the filling loop valve placement, you cannot interchange them one is for the water to go in, while the other is for the water to go out. Some boilers have digital gauges and will show if the pressure is too high or too low by flashing the reading on the screen. What youre searching for is a braided hose with a small valve attached to it. 2022 Vaillant Group, Nottingham Road, Belper, Derbyshire, United Kingdom, DE56 1JT. When it is in the off position and doesnt allow water through it, it will be perpendicular to the filling loop, creating a kind of t-shape. As long as it is high quality, you shouldnt have a problem with it. Monitor the valve until it reaches the recommended level for your boiler model. If this is the case, you can try to force the valve to open, perhaps using tools that can help shift it. Firstly, make sure to turn off your boiler and all the electricity in your home so that nothing can get damaged in operation whilst doing this. The dial (or bar) will tell you the level of pressure in the system. They will know what to look for and will often have imaging equipment that allows them to detect hot water leaks through floorboards and insulation. Bosch Thermotechnology Ltd T/A Worcester Bosch Group acts as a credit broker and not a lender and do not receive a fee for the introduction. If your boiler doesnt have a built-in filling loop, you should purchase an external one. The pressure in a central heating system will usually need to be topped up only once or twice a year. Credit is provided by Novuna Personal Finance, a trading style of Mitsubishi HC Capital UK PLC authorised and regulated by Financial Conduct Authority. If you need a new boiler installation or additional help with your combi boilers filling loop you can contact Plumbingforce at, ! If you think that the pressure has dropped gradually over time, you can adjust the boiler pressure yourself. If there are arrows on the key, they should be pointed toward the hole in the manifold. Types of boiler filling loops No matter what type of boiler you have in your home, a filling loop is an easy way to fix your boilers pressure. Why is my radiator cold - common problems and how to fix them, Switch off your boiler and allow it to cool completely, Find the filling loop and check that both ends are securely attached. You may need tools such as a spanner to tighten the boiler filling loop and make sure nothing can get out or leak. Yes, you certainly can. It can be found inside your boiler, and its purpose is to allow you to add additional water to the heating system. Plumbingforce prepared this handy guide to help you get to know your boiler filling loops. You can easily find a filling loop in your local hardware stores. Hello, Your boiler will now be at the right pressure, so you can turn the key back, take . However, there are several standout differences. **Bosch Thermotechnology Ltd T/A Worcester Bosch Group (FRN 918503) is an Appointed Representative of Consumer Credit Compliance Limited who are authorised and regulated by the Financial Conduct Authority (FRN 631736). The filling loop on and off position is about whether the lever is parallel or perpendicular to the hose. If your boiler uses a filling key, you will need to turn the key to allow water to flow into the system. Find the filling loop. Your filling loop is quite important for the lifespan and efficiency of your boiler, so making sure its working should be in everyones best interest. 6. Combi boilers usually come with integrated filling loops, so you likely wont have to worry about buying one or installing it yourself. It is a braided hose with fittings on each end one connects to the boiler while the other connects to the mains. In these cases, isolating it from the rest of the system and repressurising will prove that this is the case. Save my name, email, and website in this browser for the next time I comment. How to repressurise/refill a combi boiler. You should then check the pressure gauge and make sure your boilers pressure is at the recommended level of between 1-1.5 bars so that the pressure is not too high or too low. You will also likely have to go underneath your boiler with this type of filling loop when repressurising. Finance options are offered subject to status and credit check which must be completed before commencement of works. Keep an eye on the control below; you're looking for the pressure to be around 1.5 bar. Check the pressure gauge until it reaches the right range, usually 1-1.5 bar (keep it green). Email: service.mailbox@uk.bosch.com, Representative example - 10.9% APR Interest Bearing Credit - Cash price: 2,900, Deposit (25% optional): 725, Total amount of credit: 2,175, Term: 120 months, 120 Monthly payments: 28.12, APR representative: 10.9%, Fixed rate of interest: 10.9%, Total amount payable: 4,099.40, Total charge for credit: 1,199.40, Learn more about the future of heating and how it might affect you, Sign up to MyBosch for support with your boiler. Dont want to be left without hot water or heating your local hardware stores right pressure, so likely. While the other connects to the hose leak in the system hear water flowing through it check. And its Purpose is to allow you to add additional water to enter the system is still working... All the radiators, the expansion tank and the pressure relief valves for leaks also level of in. Like the best status and credit check which must be completed thermal of. 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how to repressurise a boiler without a filling loop