Install Instructions

1312
STEP 3: Alternate Location for Outdoor
Temperature Sensor
When mounting the Outdoor Temperature Sensor in an intake air
duct the turn the Blower Activation switch (see Figure J) to
“OFF”. If left in the “ON” position, over humidification and
condensation damage could occur.
The Sensor can be mounted with a #8 galvanized screw in the
center of either:
• PVC fresh air intake pipe for the HVAC system.
OR
• A fresh air intake duct.
In both cases, the Sensor must be no more than 3 feet
from the outside wall. See Figure G.
If it is not feasible to use the Outdoor Temperature Sensor in any
of the ways described, the Humidifier Control can be installed for
Manual Operation. See “Installing the Humidifier Control for
Manual Operation” and Figure J for details.
Figure G
3 FEET MAX.
CENTER LINE
OUTSIDE WALL
90-999
STEP 4: Route the Wire from Control to Sensor
Run wire to the outdoor temperature sensor. Sensor is accurate
with lead lengths up to 300 ft.
STEP 5: Attach Sensor Wire to Humidifier Control
Strip wire 1/4 inch, and insert the wires from the Sensor into the
terminals labeled “ODT” on the Humidifier Control. See Figure H
for location of terminals.
Figure H
90-1219B
CAUTION
Do not run outdoor temperature sensor alongside
wires carrying high voltage (120 VAC or higher).