Time delay switches save energy by automatically turning off equipment. They may be used with SP and CSP fans or fan and light combinations for extended operating time of fan. Time delay switches act in the same manner as a standard switch, however, there is a delay of 10 to 60 minutes after the fan has been turned off.
Complete hanging isolation kit with spring isolators to reduce vibration and sound levels. Support brackets included are designed to permit mounting of the fan with the motor located on top, bottom or side.
The Greenheck Model DFD-150 is for use in walls, floors, and partitions with fire-resistance ratings less than three hours. This model has a 3ยนยน/16 inch frame. Dynamic-rated-fire dampers are in HVAC systems that remain operational in the event of a fire. The DFD150 is labeled for vertical installation only.