wrote:
I am buying a wood pellet boiler and want to have mains pressure hot
water. I have been told that with type of boiler you need a buffer
tank so that the boiler will not cycle. I am also putting in
underfloor heating and solar panels. What is the best type of tank?
Is it better to have a buffer tank and a seperate DHW tank or is one
tank like the DPS thermal heat bank GXV enough. www.heatweb.com

You only need a buffer tank if you're using a conventional cylinder,
where the boiler heats the hot water cylinder via a coil.

If you use a heat bank/thermal store, it will work great without one -
in fact, that arrangement is far better suited to this type of boiler.

--
Grunff