What does OAI stand for?

You simply spray it onto the outside air intake vent.

Some of the earliest published calibration procedures were developed in the two office buildings reported by Hsieh (1988), including: calibration of tenant energy use, HVAC equipment operation schedules and thermostat setpoints, heating and cooling equipment performance, building shell heat loss coefficient, zone definitions in DOE-2, outside air intake, and weather data.

I put about 12-15 pieces of firewood in the box, add some kindling, open the outside air intake and the damper, light the fire and close the see-through glass and iron doors.

One of our major competitors offers a Taiwan-OEM-made 'rugged' unit that needs a fan and outside air intake to keep from burning up.

One possibility is that spores could be released into the outside air intakes or return air duct of a building.

Many outside air intakes are not readily accessible and, therefore, are less likely to a direct release.

In many cases buildings have these perfect Legionella distributors located near outside air intakes or public areas.