Product Overview

TB7100A1000 MULTIPRO™ MULTISPEED AND MULTIPURPOSE THERMOSTAT
63-2675—04 22
Fig. 40. 10K ohm sensor resistance versus temperature.
TR21 Remote Temperature Sensor
Operation
When installed with Thermostat ISU 0340 set to 3 or 4, the
remote inside temperature is displayed on the Thermostat
Home Screen as Inside Temperature. The thermostat
internal temperature sensor is not used.
The TR21 can be used to provide one remote sensor input
or as a temperature averaging network with multiple TR21
Sensors connected, as shown in Fig. 25 through 27.
Checkout
For best results, allow TR21 Wall Mount Temperature
Sensor to absorb the air moving through the room for a
minimum of twenty minutes before taking a resistance
measurement.
With an accurate thermometer (±1°F [0.5°C]) measure the
temperature at the sensor location, allowing time for the
thermometer to stabilize before reading.
To verify sensor resistance, remove one wire from one of
the wiring terminals. Use an ohmmeter to measure the
resistance across the sensor. Then verify the sensor
accuracy with the temperature/resistance in Fig. 41.
Fig. 41. 20K ohm sensor resistance versus temperature.
TEMPERATURE (DEGREES)
o
F
-40
-20 0 20 40
60
80
100
120
-20
-30
-40
-10 40
RESISTANCE (OHMS)
10K OHM AT
77
o
F (25
o
C)
220K
190K
160K
130K
100K
90K
60K
30K
o
C
M22823
0
10 20
30 50
0K
TEMPERATURE (DEGREES)
o
F
30
40 50 60 70
80
90
100
110
0
10
20
30
40
RESISTANCE (OHMS)
20K OHM AT
77
o
F (25
o
C)
80K
70K
60K
50K
40K
30K
20K
10K
o
C
M5874A