What is the primary concern when installing gas appliances in confined spaces?

The primary concern when installing gas appliances in confined spaces is adequate ventilation for combustion air. Gas appliances require a certain amount of oxygen to operate safely and efficiently. In confined spaces, the availability of fresh air can be limited, which affects the combustion process. If there is insufficient ventilation, the appliance may not receive the necessary oxygen, leading to incomplete combustion. This can produce dangerous byproducts such as carbon monoxide, which poses serious health risks.

Ensuring proper ventilation also helps maintain an appropriate balance of air in the space, preventing the buildup of flammable gases and allowing for the safe operation of the appliance. Hence, adequate ventilation is critical to ensure both performance and safety when gas appliances are used in confined areas.