Sizing System Boiler to Tank

[bernardgreen]

Someone is exaggerating the performance of their product

Who would be that un-ethical ?

 

[muggles]

Where did you find that info? It's nowhere on Joule's website.

Is it the heat-up from cold time (15°C to 60°C) or the reheat time after 70% draw off? If it's 'from cold time' then you would need a 72Kw boiler to do the job and a coil to match! If it's after 70% draw off , it will need a 50kW boiler and matching coil.

Someone is exaggerating the performance of their product.

It's in their brochure. Yes, you need a big ol' boiler to achieve the quoted times, but they are capable of that. It's an absolutely enormous coil in there with a 4.0m² surface area - larger than a lot of tank-in-tank heat exchanger sizes.

 

[D_Hailsham]

It's in their brochure.

Link please;I can't find it on their website.

 

[denso13]

Link please;I can't find it on their website.

https://www.theunderfloorheatingstore.com/media/ufhs/manuals/Cyclone-Heat-Pump-2016.pdf, page 31

Edit - that link wont open for some reason but is available on that website.

 

[muggles]

Link please;I can't find it on their website.

Yeah, the website is pretty terrible. I can't upload pdf files here it seems - comes up with a security error - but here's a screenshot from the brochure I have saved on my phone...