Consist of the combustion air eaten with the gas-fired hot h2o heaters In the event the combustion air is supplied from the inside Area instead of from the concentric flue or direct-ducted arrangement. Exhaust ventilation: This system gets rid of indoor air pollutants directly from the supply, such as kitchen https://cashuurqn.estate-blog.com/29082024/the-best-side-of-restaurant-and-bar-ventilation