What type of air provision is required for Type 2 clothes dryers?

Type 2 clothes dryers are designed to expel a significant amount of air during their operation, which is important for the effective drying of clothes. To ensure these appliances function properly and safely, they require an adequate supply of make-up air. This make-up air is necessary to replace the air that is exhausted from the dryer, helping to maintain proper air pressure and preventing backdrafts or other issues that could arise from having insufficient air.

Make-up air refers specifically to the fresh air that is brought into a space to maintain air balance when other air is being exhausted. This is critical in maintaining the efficiency and safety of gas units and preventing the conditions that could lead to hazards such as carbon monoxide buildup.

Fresh air, circulating air, and airtight air are not the specific types of air provisions needed for Type 2 dryers in the same context. Fresh air could refer to any air introduced to a space, but may not directly address the need for balancing the air being exhausted by the dryer. Circulating air refers to air that is moved around within a space rather than being replaced, and airtight air is not a recognized requirement for dryer ventilation as it implies no airflow, which contradicts the needs of the dryer system.