Boiler assembly especially for a water heating system

摘要

The boiler assembly for a heating system has at least one deflector (114) in the burner zone (104). It is fitted so that the combustion products from the burner (110) follow a flow path to the exhaust outlet (123) at the burner zone (104). It forms a narrow point (122) together with a wall (120) of the burner zone (104). The narrow point (122) is set so that the mean flow speed of the combustion products matches the mean flow speed into the following heating zone (132).