Megaflo cylinder have the instructions on how to recharge the air bubble in their cylinders both in the USER instructions and on the side of the cylinder, cant see how recharging an expansion vessel is any different.
Give what ever advice u want pal , I'm just saying that u don't get un vented , gas tickets for no reason , maybe if a mod sees this post they will ban all diy on unventeds alsoBecause I feel like it.
The dripping pipe is probably NOT an over flow but a badly installed condensate drain from the boiler. Condensing boilers produce a liquid ( water with dilute acids ) when they condense the water vapour produced by burning the fuel
It should be arranged that the condensate liquid is taken to a drain or a properly constructed soak away
Hi
Just moved into a new house - I'd got to know my old vented system pretty well and did quite a bit of successful DIY work on it.
However - This new place has an unvented / pressurized system, and one of the overflows is dripping.
For the H/W, in the attic there is a cylinder with a smaller expansion bottle next to it. See photo below. Note: there is a vented tank for the C/H expansion.
The boiler is an oil-burning 'wallstar' with no obvious faults.
My problem isn't a critical one (I hope) - but I've noticed that every evening/morning when the boiler is running DHW, one of the overflow pipes drips.
The pipes in this house are all buried in the wall so I can't see where this overflow runs to/from which is annoying. There are two, both located only about 6' from the boiler location and about 6" from the outside ground level, rather than poking out of the eves like I'm used to.
I can't figure out why it's dripping, here are a few other bits of info to help;
- It drips constantly while DHW is running. About 1 drip per second.
- It does it in all weathers (hot or cold)
- I can't see any leaks or issues in the plumbing system elsewhere.
- Boiler seems to function normally, no noises, no smoke,
- I doubt it's related, but there is a water softener installed in the location of the original HW cylinder (before unvented system installed).
- The unvented system was installed 2011.
Really grateful if anyone can help
Cheers,
Tom
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