| 摘要 |
A ventilation assembly having a main housing and a removable cartridge assembly that can be positioned within the main assembly. The main housing can be mounted within an aperture in a wall or ceiling and, in certain examples, can be connected to ductwork and electrical wiring within the wall or ceiling. The cartridge assembly can include a retention feature that can be releasably engaged to the main housing to retain the cartridge assembly within the main housing. The cartridge assembly can include ventilation components such as the motor, fan wheel, capacitor, controller and various combinations thereof. The cartridge assembly can be removed from the main housing by disengaging the retention feature and replaced with a new cartridge assembly or modified elsewhere before being reinserted into the main housing, thereby permitting repairing or upgrading of the ventilation assembly without removing the main housing from the wall or ceiling. |
