The Vitodens 200-W wall mounted gas condensing boiler is ideally suited for use in apartment buildings, commercial premises and public facilities. The boiler, developed and manufactured by Viessmann, is the only one of its kind in the world. As a modular cascade system, it is not only cost effective, it also offers space saving solutions. Cascades with a rated heating output of two times 49 kW to six times 99k W can be combined even in rooms with low ceiling heights of 1. 9 metres.