| 摘要 |
A heating gas boiler has a body, combustion chamber, water heat exchanger with vertical fire tubes total area of cross section and heat exchange of which provides optimal heat exchange and minimal permitted temperature of outflow gases to flue. The boiler has turbulators installed in fire tubes and promoting most effective heat exchange, and safety automation devices. The heat exchanger is equipped with an additional fire tube and gate that can completely close the cross section of that additional fire tube. |
