Portable electrical apparatus for the measurement of combustion flue gas parameters. Guide to their use in the process of commissioning, servicing and maintaining gas fired central heating boilers— 28 стр.
91.140.10 Central. Including burners and boilers for central heating systems / Системы центрального отопления. Включая горелки и котлы для систем центрального отопления
13.040.40 Stationary source emissions / Выбросы стационарных источников
