Collection/distribution unit for the hot water in a heating installation, for a building, has a four-way valve in the connection to the heating circuits to give flows of different temperatures and a backflow

摘要

The central collection/distribution unit (2) for a heating system, with a hot water heating installation (1), has paired pipe connections for the water inflow and outflow links to the oil/gas boiler (3). The assembly has one or more hot water circuits (7) to heat the building, with a four-way mixing valve (2.1) in the circuit connection. The valve has three outflow openings, and one backflow opening, to give flows of different temperatures. The heating installation has a hot water supply tank (5), and a control unit (3.1).