Aprilaire Model 8570 - Manual (Page 25)

1. Mount the indoor temperature sensor.
• Locate the sensor as you would locate a thermostat.
• Maximum wire length from sensor to thermostat is
300 feet.
• Follow the installation instructions provided with
the sensor.
2. Run a 2-wire cable from the sensor to the thermostat.
3. Take a resistance measurement before connecting to
the IDS and CIR GND terminals to verify the sensor is
properly installed.
• Use an ohmmeter to measure the resistance (k Ω) of the
sensor. The resistance reading will depend on the indoor
temperature (see table from OUTDOOR SENSOR
installation section on page 17).
4. Wire the sensor to the thermostat (see Figure 9).
• Strip 1/4" of insulation from the two sensor wires.
• Connect the sensor wires to the IDS and CIR GND
terminals of the thermostat. The wiring is not polarity
sensitive, so either wire can be connected to either
thermostat terminal.
Do not run the wire along
side line voltage (120 VAC) or higher lines as
this can cause erratic readings.
(8) OPTIONAL – INSTALL AN APRILAIRE MODEL 8051 INDOOR FLUSH MOUNT TEMPERATURE SENSOR
CAUTION
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