In commercial applications, how should ventilating hoods and exhaust systems be installed?

In commercial applications, ventilating hoods and exhaust systems must be installed in a manner that ensures effective removal of combustion by-products, which includes gases produced by gas appliances. Permitting the ventilation system to vent gas appliances is essential for maintaining safety and air quality within a commercial facility. Proper installation allows for the discharge of potentially harmful gases like carbon monoxide, which can accumulate and pose serious health risks to individuals inside the building.

Additionally, commercial environments often have specific codes and regulations that mandate certain safety standards and operational efficiencies. This ensures that gas appliances operate effectively while minimizing the risk of explosions or accidents related to gas leaks or poor air quality. Therefore, the design and installation of these systems must comply with these guidelines to mitigate hazards and create a safe environment for both employees and customers.

The other options imply restrictions or limitations that do not align with best practices for safety in commercial settings. For instance, restricting installations to residential areas or limiting them to heating appliances does not reflect the versatile and often complex needs found in commercial environments. Similarly, installing ventilation systems within the same room does not adequately address the need for properly vented exhausts, as this approach could lead to the recirculation of harmful gases rather than their safe removal.