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Yes, quite so, and also the observation that although I had collected about three pints of water, the pressure gauge on the expansion tank hadn't shifted from its usual position between 0.5 and 1 bar. It was such a tiny leak from the back of the pipe, which is in such a difficult place to...

Update.........yippee, I've found the leak! It was coming from a small corroded crack in the corrugated pipe at the elbow joint of the condensate outflow - see photo. (apologies for blurriness) I've yanked it a bit to make it more obvious. I only managed to find it by stripping off all the...

It's a thought, but I don't think even a 16Kw air pump would hack it. It's a big house; an 8 circuit underfloor for the ground floor and around 14 rads upstairs. It would need a tank the size of a tanker. The Grant is set up with a 30Kw nozzle. As far as low temperature corrosion is concerned...

I'm another victim - our Grant Vortex Eco 26-35 is leaking. But not from any pipework, PRV or condensate joints. Just oozes from underneath but curiously only when actually working. Abou 150mls twice a day. I guess it's from a fault in the water jacket carcass - whatever it's called -...

Tthe best description I can manage is a small metal spacer like the one on the far left of this ebay product...

Even with the top cover off I can't see where the leak comes from. It's not from the pressure release valve and there are no leaks from the two pipes into and out of the boiler. Nor from the condensate trap. The dial on the expansion vessel stays between 0.5 and 1bar - as it should. It just...

Well, the tiny round cylinder thing inside the main body spins within the body. If you google 'boiler nozzle technology' it describes the different spray patterns that can be produced. However, as long as there is a pressurised spray of some sort coming out of the tiny hole of what is...

That's interesting. I would never have guessed! I sawed open my 2009-2017 nozzle to reveal......the spinner. It seemed to spin OK and was not loose in the housing.

Mine (Danfoss 0.85 80degEH) are only a mere 8yrs service life. (I rarely throw things away!)

Thanks kez1, that's an amazingly quick response! But at 75 I'm a bit beyond learning to weld.....and I doubt if I could find anyone to repair my 'boiler' (a bit of a misnomer as unlike a pressurised steam engine boiler it never actually boils). It's just a shame that in this day and age they...

I thought this old thread was worth replying to as this is a DIY forum. The answer to 'can you service it yourself' ....'not really'... is probably given by someone with a vested interest in the remunerative work of annual servicing. Surely DIYers should be encouraged! We have a Grant...

Poor Mr French! It is highly unlikely that any gas would surround the sealed and vaselined power tube in sufficient concentration to explode. It is also highly unlikely that a spark would arise from the assembled contraption to cause an explosion. And if I need light to inspect the tank's...

I have just replaced the probably original batteries in our ten year old Watchman powertube, to no avail. Still getting the 'r' and flashing red light every three seconds. This is because the safety resistor is now resisting so much that there is virtually no voltage at the terminals. So I...