This document is the fantech DBF4XL dryer booster fan installation and operation manual.
The Fantech DBF4XL is a dryer booster fan designed to improve air velocity in dryer duct runs up to 130 feet. The kit includes the fan, a mounting bracket, hardware, a wall label, and tubing with a grommet. It features a positive pressure sensing switch that activates the fan automatically when the dryer operates, eliminating the need for manual switching or complex wiring through the dryer circuit.
| Maximum Duct Run | 130 feet (40 meters) |
|---|---|
| Minimum Distance from Dryer | 5 linear feet |
| Power Supply | 120VAC |
| Air Velocity | 1200 fpm |
| Maximum Temperature | 140°F (60°C) |
The fan activates automatically via a positive pressure sensing switch that closes the circuit when the dryer begins operation.
No, the unit is for general ventilation only and should not be used to exhaust hazardous or explosive materials and vapors.
Sensitivity can be adjusted by rotating the fan and switch to the 1-o'clock position for less sensitivity or the 5-o'clock position for more sensitivity.