Is suitable for large hot water consumers. Heats a pool of any size.
Water reaches to the point of consumption with pressure. Requires less maintenance.In these systems, vacuum tubes are installed on the roof, and the tank in which most of the hot water is collected, is installed in the boiler room under construction. Bonus – partial heating in special cases. Advantage: system doesn’t fail when one pipe is damaged. Disadvantage: More expensive than unpressurized system.