DB10 Switch
DBF110 FAN/SWITCH INSTALLATION INSTRUCTIONS
Fan Installation
Step 1. Selecting Fan Location
Fan must be mounted a minimum of 15 feet from the dryer outlet.
If the fan is mounted
closer than the recommended 15 feet, it may develop enough pressure to lift wet lint into
the fan impeller resulting in excessive lint loading in the fan.
The best location for the fan,
in any application, to be mounted is as close as possible to the termination of the duct work. In order to
perform recommended maintenance, fan location should allow sufficient access for service. Refer to
dimensional drawings shown below.
Step 2. Mount Bracket
Using the wood screws provided, attach the mounting bracket to a support beam at the
selected location. Bracket is provided with gaskets in order to isolate any vibration and prevent the
transmission of sound through the structure. Be careful not to overtighten. Fan mounting can be in any
angle, however, vertical mounting is recommended to reduce condensation buildup in the fan. If a
horizontal installation is necessary and condensation buildup may pose a problem, a 13/32" hole drilled
in the bottom of the housing (along with an NPT insert and drain tubing) will allow condensation to
drain.
Step 3. Mount Fan
For optimum sensitivity, the switch diaphragm should be positioned vertically. (Illustrations
below show diaphragm position for horizontal, vertical and ducts installed at an angle.) Wiring box
should be positioned for easy access. Attach fan to the mounting bracket with the self tapping screws
provided. Care should be taken not to strip the plastic housing. Although screw pilot holes are not
required, 3/32" (or smaller) pilot holes are recommended.
NOTE: Steps 2 & 3 may be reversed.
Mount Bracket
Mount Fan
Pressure Switch Positioning
Horizontal Duct
Switch Above Duct
Switch Below Duct
Switch Above Duct
Switch Below Duct
Angled Duct
Vertical Duct
Switch Parallel to Duct
Correct Switch Positioning - Diaphragm Positioned Vertically
Incorrect Switch Positioning
Horizontal Duct
Angled Duct
Dimensional Data
FR110 with DB10 Switch