I bought a Potterton Refilling Loop today to replace the leaking refilling loop on Potterton Powermax Heat Engine Condensing Boiler 85 litre. It has been leaking for years and I finally decided to do something about since I am tired of my boiler pressure falling. It is now back to normal at 1.5 pressure gauge as it should be. Thank you very much for sharing this video it was very helpful. I also used my hair dryer to quickly dry the areas where water spilled.
Great video. My filler loops leaking and, the flathead screw valve has worn too so hard to get screwdriver in. So, turn off water from mains and make sure pressure gage is zero bar on boiler, turn off electrical connection. That's it I think. Update......did it. Thanks for instructions !!!!
You switched off the water from the stopcock and drained the water through the kitchen taps before you started. And then you switched off the boiler from the mains before you start this job, is this correct? Do I have to do anything else before I replace the filler loop hose?
I’m confused. Two things....firstly you have surely drained down the system prior to this but haven’t shown it....why not? Secondly, why didn’t you turn off the valve on the upper section of the filling loop and remove the bottom connection first? If you did this then you could then put the flexible pipe into the bucket and then turn the upper valve back on, releasing any remaining water straight into the bucket, instead of having it running everywhere and having to mop up? I don’t get it.
Good point. The reason I don't as you suggest is I went to a job once and I turned of the upper section of the loop and opened the bottom valve, what you think happened, well I got very wet. Reason being was that the upper valve to the filler loop was ceased open and the turning valve handle turned into the off position without any issues, not knowing that the handle mechanism was warn out and the valve was open. I got all wet and everything around me, resulting in a lot of cleaning and drying up. let me tell you its easy to turn the handle to close the valve on the top section of the loop but try closing the valve with a flat head screw driver after water is gushing out at pressure on the bottom end of the loop when you least expect it. "Panic Stations" lol. For this reason I never did it that way ever again just to be on the safe side. I know it saves time as you suggest but hope you understand why I do It this way. Thanks for you comment.
The aim is to empty the boiler of all its water so you can work on it, if you have a water cylinder which supplies the boiler with water then you need to stop that water coming into the boiler, you may need to drain the whole cylinder by turning off the mains and opening a tap until empty, or you may have a isolation valve which will turn the water off to the boiler without the need to drain the entire cylinder.
Hi, I have a combi boiler, do I have to drain the boiler/system to change a filling loop or can I just turn the water and boiler off at the mains? Thanks
