what happens if the tank boils for 501 hours ? I will continue to give the same advice irrespective of hetas or any one else for that matter
I totally agree with you Transam
What Goldspoon needs to realise is there is a difference between what is permitted and what is best practice.
Most solid fuels will boil over at some point, depends how big you like the fire. After a few years it may well have held boiling water for more than 500 hours. I have know solid fuel stoves and cookers to boil over on an almost daily basis when no rads. I even still take the expansion through the roof with a swan neck if no rads. Not because i have always done it that way but because i know it will boil regularly and all that steam in the attic is not good for the building.
As an F&E tank is more or less a fit and forget item who is going to have it changed every few years? Who can say how many hours of boiling water it has held and when it needs changing?
For the sake of a few quid, I will continue to sleep easy in my bed and fit galvi or fibreglass and know my customers can sleep easy in their beds below, no matter what Hetas or anyone else say.
Some seem to think solid fuel and woodburners are a new idea?? I've done it since the 70's when i was fitting up to 5 a week and was taught the dark art from men who had forgot more than most will know. The courses at the time were run by the coal board (SFAS) and they were good in depth week long courses with written exams not ABCD's and an open book to look up the answers.
If the Hetas appreciation one has a 33 - 50% failure rate there must be some amount of clueless halfwits going through it.