Class air shall not be recirculated or transferred to any other space. Exception: When using any energy recover device, recircu- lation from leakage, carryover, or transfer from the exhaust side of the energy recovery device is permitted. It is merely informative and does not contain requirements necessary for conformance to the standard. Ventilation for Acceptable Indoor Air Quality.

Applies to all spaces intended for human occupancy except those within single-family houses, multifamily structures of three stories or fewer above grade, vehicles, and aircraft. There are LEED certified buildings located in non-attainment areas for PM and PM 2. Finned Tube Coils and Heat Exchangers. Select to reduce water droplet carryover –Limit coil pressure drop to 0. Humidifiers and Water Spray Systems.
ETS-free area: an area where no smoking occurs and that is separated from ETS areas according to the requirements of this standard. Note: A no-smoking area is not necessarily an ETS-free area. It is ASHRAEs standard for indoor air quality for commercial buildings.
Local Exhaust WHOLE-HOUSE VENTILATION ASHRAE 62. COMNET for the Standard 90. American Society of Heating, Refrigerating, and Air-Conditioning Engineers (ASHRAE) 90. Standing Standard Project Committee (SSPC) for their insight.




