Aprilaire 62 Safety And Installation Instructions Manual page 7

STEP 3: Alternate Location for Outdoor
Temperature Sensor
When mounting the outdoor temperature sensor (ODT) in an
intake air duct, turn the Blower Activation switch to "OFF" (see
Figure J). 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
• 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.
3 FEET MAX.
OUTSIDE WALL
Figure G
CENTER LINE
90-999
12
STEP 4: Route the Wire from Control to Sensor
Run wire to the ODT. Sensor is accurate with lead lengths up to
300 ft.
CAUTION
Do not run ODT alongside wires carrying high voltage (120
VAC or higher).
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
13