AIR TEMPERATURE SENSOR
Fig. #9040
OUTDOOR AIR TEMPERATURE SENSOR
Outdoor Air Temperature Sensor Installation Notes:
• Locate the sensor on the coldest side of building, usually the North or West side.
• Install the sensor in a shaded area, out of direct sunlight.
• Locate no higher than 2/3 up the side of the building, or between the 2nd and 3rd floor if the building is more than
three stories tall.
• Do not locate under an overhang, near wall corners, near drafts from stacks, air-moving devices, windows, doors, or
balconies.
• Shielded cable length run is not to exceed 300 feet.
• Install with properly-sized conduit that contains no other wiring.
• Observe proper wire colors.
• The outdoor air temperature and water temperature sensors are identical and interchangeable. Both are equipped
with dual sensing elements. Connect only one red wire and the black wire to the sensor connecting points. The
second element is an installed spare.
Red (connect)
Black (connect)
Red (spare)
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