STS11 Touchscreen Programmable Thermostat
84
Outdoor Temperature Sensor
Operation
When installed with Thermostat Installer Setup
Number 0340 set to 1 or 2, the outside
temperature can be displayed on the
thermostat. See Fig. 27.
Fig. 27. Outside temperature reading on
STS11 Thermostat.
The Outdoor Sensor converts outdoor
ambient temperature to a resistance that
the thermostat can interpret.
The sensor has a negative temperature
coefficient (NTC), which means that
resistance decreases as the temperature
increases.
Checkout
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.
Calibration
The Outdoor Sensor is calibrated at the
factory and cannot be recalibrated in the
field.
TUE
AM
Room
Running As SCHED
Set To
SYSTEM
HEAT
MORE
SCHED
HOLD
CLOCK SCREEN
AUTO
FAN
Outside
The Wall Mount Temperature Sensor converts
room temperature to a resistance that the
thermostat can interpret.
The sensor has a negative temperature
coefficient (NTC), which means that resistance
decreases as the temperature increases.
The sensor can be used to provide one remote
sensor input (see Fig. 23) or as a temperature
averaging network with multiple Sensors
connected, as shown in Fig. 24
Checkout
For best results, allow 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.
Calibration
The Wall Mount Temperature Sensor is
calibrated at the factory and cannot be
recalibrated in the field.
STS11 Touchscreen Programmable Thermostat
85
Remote Indoor Temperature
Sensor
Operation
When installed with Thermostat Installer
Setup Number 0340 set to 3, the remote
inside temperature is displayed on the
Thermostat Home Screen as Inside
Temperature. The thermostat internal
temperature sensor is not used. See Fig.
28.
Fig. 28. Inside temperature reading on
STS11 Thermostat.
TUE
AM
Room
Running As SCHED
Set To
SYSTEM
HEAT
MORE
SCHED
HOLD
CLOCK
SCREEN
AUTO
FAN
Heat On