Heating boiler, especially calorific value boiler, has inner end of water-carrying peripheral wall connected to rear wall, peripheral wall outer return end connected to boiler's return port

摘要

The device has the inner end of a water-carrying peripheral wall (3) hydraulically connected to a rear wall with an upper feed port and venting port and the outer, return end of the peripheral wall is connected via a pipe section passing through or round the rear wall to the boiler's return port. The highest point of the inner chamber of the peripheral wall is hydraulically connected via vent openings (19) to the inner volume of the rear wall.