Indirect

The Indirect External expansion vessel stainless steel unvented cylinder has the pressure expansion vessel fitted on the pipe work by the cylinder which takes up a bit more space. The indirect unvented cylinder is heated from and indirect source like a boiler which gives you the same megaflow performance of high pressure hot water when attached to the mains pressure cold water giving excellent performance with the hot water recovery when in use. The indirect is available in the thermsaver vertical, horizontal, solar twin coil, ACV Smartline and Smartline Multi Energy.