ENV-VST-C ViewStat Color Communicating Thermostat
2
ENV-VST-C - Operation / Reference Guide
The following table lists the specifications for the ENV-VST-TSO Outdoor Temperature Sensor:
ViewStat Color Thermostat Specifications (Cont.)
Control Accuracy ±1.0° F (± 0.56° C)
±3% relative humidity
Operating Range • Temperature: 40°-99° F (5°-37° C)
• Humidity: 5%-95% RH non-condensing
Certifications • IC
• FCC Class B
•CE
• IEC60950
Front Panel Components:
Main LCD display 3.5" (8.89 cm) color QVGA (320 x 240) Thin Film Transistor Liquid Crystal Display (TFT-
LCD). The main display provides the mode status, temperature, and system status
information.
Navigation buttons The Navigation buttons are used to change various parameters on the thermostat,
including the temperature setpoints. These buttons are located beneath the display.
Mode/Select button The Mode/Select button is used to navigate through the various thermostat screens,
including the weather screens. This button is located beneath the display.
Circuit Board Components:
Communication and HVAC
Equipment connectors
Terminals with captive-wire connectors that connects to the thermostat, HVAC equipment,
control system, remote sensors, and power supply. See the Communication and
Equipment Terminal Wiring Definitions section on page 5 for more information.
Enclosure:
Material White plastic and removable front panel. The panel can be painted to match wall decor.
Warning: If you paint the panel, do not paint over the exposed thermistor. Doing so can
cause the external temperature sensor to work improperly.
Dimensions (HWD) 5.31" x 3.93" x 1.18" (13.48 cm x 9.98 cm x 2.99 cm)
Weight 5.29 oz. (150 grams)
Included Accessories ENV-VST-C ViewStat Color Communicating Thermostat Installation Guide (93-2050-01)
ENV-VST-TSO ViewStat Indoor/Outdoor Temperature sensor (FG2050-22)
Duet i!-Weather application (FG070-518), three-year subscription
Optional Accessories ENV-VST-TSF ViewStat Indoor Flush Mount Temperature Sensor (FG2050-21)
ENV-VST-TSO Outdoor Temperature Sensor Specifications
Sensing Element: Thermistor (thermal resistor)
Accuracy: ±0.6° C from -20° to 60° C (-4° F to 140° F)
Operating Temperature Range: -50° C to 110° C (-58° F to 230° F)
Temperature Response: NTC Thermistor
Connection: 1" (2 1/2 cm) 24 AWG pigtails
Mounting: Surface mount or 1/4" hole
Color: White plastic case
Threaded Case Length: 1 3/16 in. (30 mm)
Threaded Case Diameter: 1/4 in. (7 mm)
Sensor Face Diameter: 1/4 in. (7 mm)
Sensor Face Thickness: 1/13 in. (2 mm)
Weight: 0.88 oz. (29.94 g)
