Cascade unit for the heating system with two or more hot water boilers

摘要

The unit has two central heating boilers (2) e.g. condensing boilers, and a hydraulic guide (5) that is connected with a feed and a return of the boilers and with heating circuit feed (55) and return (56). A horizontally running boiler feed-accumulator (3) and a boiler return-manifold (4) are connected with the guide and are arranged with connection pieces (32, 42) for connection of the heating circuit feed and the return. The unit forms an integral supporting frame (10), where one of the boilers is attached to the frame.