RESIDENTIAL HUMIDISTAT
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Installation
Form 16763
5
Humidistat Option 1 — Return Duct
1. Choose a location on the return air
duct to mount the duct sensor. See
Figure 2
for location options. Make
sure the humidistat mounting
location is close enough to plug in
the sensor.
Install the sensor a
minimum 6 inches ahead of or a
minimum 15 inches after a
change in airflow direction or
obstruction in the duct. Do not
install duct sensor near outdoor
air intake.
2. Drill a ½ inch hole in the duct to
place the sensor. Use a sheet metal
screw (D) to attach sensor to the
duct. Arrows in duct mount sensor indicate the direction the airflow
should pass over the sensor for optimal readings
(Figure 1)
.
3. Mount the humidistat to a wall or duct in a convenient location that
allows easy adjustment to the settings. To mount the humidistat,
remove the back plate and install with screws (D or E) through the
mounting holes.
4. Plug the duct sensor into the humidistat.
Pay close attention to the
orientation of the plug or permanent damage will occur to the
sensor.
See
Figure 3
for proper orientation of the duct sensor plug.
Place the hook of the red plug up away from the circuit board and push
onto the white connector in the bottom left corner. The wire colors are
also marked on the circuit board and match the correct orientation of
the plug wires.
Airflow
Figure 1: Duct Sensor
