"Christian McArdle" wrote in message
. net...
The ACV is the best flowrate from a system in a box I yet to see.

The best flowrate I've seen is the Keston Duet. However, it doesn't have
an
external casing to my knowledge, so isn't as pretty.

Christian.

That is two separate items slapped into one frame. I believe you have to
assemble it. Not the same as in a ready made box, but getting there. They
could have at least put a case around it and made it into a full one box
solution; bad marketing. The Duet can't deliver 380 litres in 10 minutes. It
has 200 litres maximum.

We all get carried away with litres/min, when other times are more relevant
to the application, like 10 mins. You could get 42 litres/min for 5 mins,
but that will not fill two baths simultaneously. ACV is a class above
Keston, and the tank-in-tank ****es all over others for re-heat. The ACV has
an 80 litres unvented cylinder store, which can up to 10 bar, the Duet can't
go that high. The Keston is reduced to about 3 bar and the less the pressure
the less the throughput. The ACV has no restriction, so a greater
throughput. The first 80 to 100 litres from the ACV will be equiv to the
Duet. Keston is equiv. to W-Bosch. I believe the cylinder in the Duet is
made by Ariston.

Even on price the Duet is behind, £2,380.55 inc VAT for the 200 litre
model. Not far off the ACV Heatmaster which is superior all around in
performance, quality, and certainly looks, and no zone valves and by-passes
about as the CH is taken off the integral thermal store. The ACV is not a
compromise as the Duet is.