AMX ENV-VST-C - Manual (Page 20)

Installation and Wiring
14 ViewStat Color Communicating Thermostat
Installing a Remote Sensor
The ViewStat Color Communicating Thermostat has an onboard temperature sensor that can read and
report the temperature at the location of the unit (see FIG. 10).
FIG. 10 Onboard temperature sensor
You can install an additional remote sensor to get a temperature reading from a location away from the
thermostat. If you install a remote sensor, you can use the temperature reading as the main reported
temperature, or you can use the temperature reading with the reading from the onboard sensor to report
an average temperature for the zone. The ViewStat Color Communicating Thermostat supports only one
installed remote sensor. The sensor connects to the S1 or S2 terminal on the ViewStat. See the
Communication and Equipment Terminal Wiring Definitions section on page 7 for more information on
the terminals on the thermostat.
You can install the indoor/outdoor temperature sensor that ships with the unit, or you can install an
indoor flush mount sensor (FG2050-21), available for purchase separately. You can use either sensor
with the thermostat, but not both at the same time, as the thermostat supports only one external sensor.
Refer to the ViewStat Color Communicating Thermostat User Guide for information on enabling or
disabling each sensor.
Installing the Indoor/Outdoor Remote Sensor
FIG. 11 displays the indoor/outdoor remote sensor. You can install this sensor outdoors for a reading of
the outdoor temperature that the sensor reports back to the thermostat. You can also install this sensor
indoors for an extra indoor temperature reading. You can use the indoor reading with the reading from
the on-board temperature sensor on the thermostat to report an average indoor temperature.
Onboard
temperature
sensor
Do not paint or tape over the onboard temperature sensor. Doing so can cause the sensor to work
improperly.