| 摘要 |
A system and a method are described for maintaining a first pressure of a first portion of a building below a second pressure of a second portion of the building to prevent moisture from migrating from the first portion to the second portion. The system may include a pressure measuring system, an exhaust air mover, and a microcontroller. The pressure measuring system, e.g., a differential pressure sensor, may be selectively operable to calculate a pressure difference value between the second pressure and the first pressure. The exhaust air mover, e.g., a fan assembly, may be adjustable for selectively varying exhaust of air from the first portion to an exterior of the building. The microcontroller may be in communication with the pressure measuring system and the exhaust air mover to instruct the exhaust air mover to increase or decrease the exhaust of air to maintain the pressure difference at a positive setpoint.
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