How do I know if my filling loop is closed?

Filling loops can come in different designs and can be detached from the boiler when not in use. With the black levers in this position the valves are OFF/CLOSED. Find the filling loop and check that both ends are securely attached.

Why can’t I Repressurise my boiler?

A leak in a valve could be a reason for losing pressure so check for water around the valve. Close both valves when the pressure gauge reaches 1.5 bar. Remove the filling loop if it isn’t a built-in one. Turn the boiler back on and recheck the pressure.

Where is my boiler filling loop?

An external filling loop can be located anywhere on the central heating circuit which gives it great location flexibility. In many instances the filling loop will be located on the pipework within 1 meter of the boiler.

Do all boilers have a filling loop?

Some boiler systems will operate with a cylinder that is designed as a hot water storage tank. The filling loop shouldn’t be fitted there, there are instances where they are installed on the cylinder. You are looking for a braided hose, with a small fill valve on it.

How do you fill a boiler without a filling loop?

If you notice you don’t have a filling loop, but you do have a large metal cylinder that’s warm to the touch, this is precisely where you need to start looking. What you’re searching for is a braided hose with a small valve attached to it.

Why does a boiler need a filling loop?

Most boilers need a filling loop or alternative built-in component in order to keep our boilers pressure at the optimum level of 1-1.5 bar. If you don’t re-pressurise a boiler several problems can occur. If the boiler pressure is low, there could be a leak anywhere in your property’s pipework, a leaky valve or even air in your system.

What is a filling loop and how does it work?

What is a filling loop and how does it work? A boiler filling loop is a key element when it comes to your boiler. We use it to fill and pressurise the system with water and top it up when it is needed.

What should I do about my pressure filling loop?

Its the combined cold water inlet isolation valve / filling valve. Replacement would involve isolating the cold mains , and electric supply to boiler. Draining dhw and boiler. Undoing the valve and fitting new one including new seals

How to change the filling loop on a combi boiler?

How do I change my filling loop on a combi boiler? 1 Always ensure both taps are off. 2 Undo the nuts that hold the hose on. 3 Replace with the new hose and do the nuts up.

How to fix a pressure filling loop in a boiler?

You could try tapping ,lightly ,the brass housing at the side ,whilst opening / closing repeatedly the black handle ….be wary as you will get wet if it does pass water ,its under mains pressure !! Its the combined cold water inlet isolation valve / filling valve. Replacement would involve isolating the cold mains , and electric supply to boiler.

What happens when you disconnect the refilling loop on a boiler?

Nothing happens, you can hear the water fill the refilling loop but then nothing more. If I disconnect the refilling loop at the boiler end and open the valve, lots of cold water. Connected to the boiler.

Is the black lever on the boiler filling loop working?

Yes, the black levers are working correctly (I tried to connect just one end of the loop and open the lever and water come through on both sides). Please take pic of pressure gauge. Is your boiler giving hot water and central heating as normally ? If its working OK then the gauge may be giving the wrong reading.

How do I change my filling loop on a combi boiler? 1 Always ensure both taps are off. 2 Undo the nuts that hold the hose on. 3 Replace with the new hose and do the nuts up.