Recent content by sadanorakman

That pretty much summarizes the situation. The Intergas is different to most current combi's, in that it has no secondary heat exchanger for the DHW, and therefore no diverter valve. It's Aluminium heat exchanger has two separate pipes embedded/running through it, one for the CH loop, and a...

Well the extra parts have got to go somewhere, like on the Atag: The FHR fits in a space that could have housed a slender expansion vessel, so instead the expansion vessel gets slapped under the boiler, adding a foot to the overall height, and making it look fugly at the same time! It seems...

Yes I agree, it's the way to go, and a shame every manufacturer doesn't offer built in FHR... if it were to become the norm, it would drive the costs way down too. It's not like you've often got the choice with external units; intergas for example said they did not support any type of...

Unfortunately not much in life comes for free... THE A325ECX still cost me about £200 more than the non-X model that doesn't have the FHR, so it's still going to take a few years for the FHR to pay for it's self in savings. having said that, an external FHR unit could have cost me £800, and...

Hi, I received an email notification to say someone had replied to my last post, so here I am again!!! The sedbuk DHW figures are synthetic, meaning that they are not directly measured, but instead calculated based upon other boiler measurements. They are so synthetic in fact, that it allows...

I didn't remove the flow limiter Tony, there isn't one fitted to the boiler by default. It comes shipped in a zip-top plastic bag and they give you the option to fit it if you want to. The Atag A325ECX has a gas saver module built in (Flue Gas Heat Recovery Unit), and is supposedly capable...

I attach turn-offs before every one of my taps, so I can manually throttle the flow back to stop splashing, and also balance the flows. The Atag boiler I just bought came with a little nylon insert to limit the DHW flow. The translation into English from the Dutch manual would make you...

Well then the 15mm pipe will certainly only hold half the amount of water, and I don't personally think that it's flow resistance would be a problem, unless (just maybe) your dynamic pressure is so low as to make the use of a combi boiler a marginal choice in the first place. Just another...

I'm with you on this one... for domestic flow rates (and pressures), I would think that the relationship between pressure and flow through any given length of static plumbing is relatively linear. Given that the viscosity of potable water is likely about the same in lands end as it is in john...

Tony, I think my comments were quite in order for my given scenario (my own dwelling). Please correct the assumptions in my post if you think not. I was simply indicating that in my house the supply pressure is sufficient to deliver more than enough hot water flow to my kitchen sink through...

By my calculations, one meter of 22mm copper pipe (1mm wall thickness) holds 314.16 ml of water, or almost one third of a liter. This soon adds up, with 10 mtrs of 22mm pipe holding over 3 liters of dead water. So every time you've been running hot water, you are potentially wasting the...

[/url] Viz eh? arf arf... fnarrr fnarrrr... very good Hugh!

[/url] Very good... but what's depressing, is that Demolition Man was 21 years ago... Boy that makes me feel old!

...wow, shot down in flames! Just been reading about fluid categories, and preventing backflow. I didn't realise that a bidet application would be so demanding!!! Yes, seems I need a category AA, AB, AD, or AUK1 backflow prevention device for this solution, which means even an rpz valve...

I’d really like a Bidet for handling the old claggers, but don’t have room to install one. Luckily, I see there are WC pans available with a Bidet Nozzle built in! So I’m opening a discussion for the following Harebrained, Heath-Robinson (Not Dan-Robinson) Mechanism: 1. Boiler water is fed to...