Vent - Consider using a fan and outside air to cool your home.
发泄-考虑利用风扇和室外空气冷却，你的家。
Fan, pump, air duct, water pipe, vent.
风机，水泵，风道，水管，风口。
The system uses a vent fan, a manually adjustable backpressure damper, a differential pressure-sensing gage, and an inlet air filter high differential pressure alarm switch.
此系统用一个排气扇，手动调节反压闸，压差传感器和一个进气过滤器压差高报警开关。
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