AMX ENV-VST-C specifications Overview, Specifications, Installing a Remote Sensor

Installation Guide

ENV-VST-C ViewStat Color Communicating Thermostat

ATTENTION: READ THIS FIRST!

For more detailed installation, configuration, programming, and operating instructions, refer to the ViewStat Color Communicating Thermostat Operation/Reference Guide available on-line at www.amx.com.

FIG. 1 ENV-VST-C ViewStat Color Communicating Thermostat

ViewStat Color Communicating Thermostat Specifications (Cont.)

Circuit Board Components:

Communication	Terminals with captive-wire connectors that connects to the
and HVAC	thermostat, HVAC equipment, control system, remote sensors,
Equipment	and power supply.
connectors
Enclosure:
Material	White plastic and removable front panel. 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	5.31" x 3.93" x 1.18" (13.48 cm x 9.98 cm x 2.99 cm)
(HWD)
Weight	5.29 oz. (150 grams)
Included	ENV-VST-C ViewStat Color Communicating Thermostat
Accessories	Installation Guide (93-2050-01)
	ENV-VST-TSO ViewStat Indoor/Outdoor Temperature sensor
	(FG2050-22)
	i!-Weather application (FG3005-20), three-year subscription
Optional	ENV-VST-TSF ViewStat Indoor Flush Mount Temperature Sensor
Accessories:	(FG2050-21)

Overview

The ViewStat Color Communicating Thermostat (FIG. 1) provides the current temperature (from an on-board sensor, a remote sensor, or an average of the on-board and remote sensors), controls and displays humidity, and displays the current outdoor temperature. The thermostat displays this information on a 3.5" (8.89 cm) color display. In addition, the thermostat provides the current day's weather forecast along with a five-day forecast, when connected to an Internet-enabled Master. The forecast information is driven from AMX’s i!-Weather application. A three-year subsciption to i!-Weather is included with purchase of the thermostat.

Specifications

ViewStat Color Communicating Thermostat Specifications

Control Voltage	24 VAC (interfaces with a power supply through the RC terminals.)
	Warning: Exceeding the control voltage may cause damage to
	the thermostat.
Switched	18 – 30 VAC, 57-63 Hz
Voltage
Maximum	2 amps total at rated voltage, through all outputs.
Operating	1 amps through any one output.
Current
Maximum	2.0 A
Surge Current
Internal Battery	CR2032 for maintaining real-time clock settings during a power
	loss.
Control	±1.0° F (± 0.56° C)
Accuracy	±3% relative humidity
Temperature	Maximum displayable indoor temperature: 40° – 99° F
Range	(5° – 37° C)
	Maximum displayable outdoor temperature: -40° – 120° F
	(-40° – 49° C)
Operating	32° – 122° F (0° – 50° C)
Range
Front Panel Components:
Main LCD	3.5" (8.89 cm) color QVGA (320 x 240) Thin Film Transistor Liquid
display	Crystal Display (TFT-LCD).
Navigation	The Navigation buttons are used to change various parameters on
buttons	the thermostat, including the temperature setpoints. These
	buttons are located beneath the display.
Mode/Select	The Mode/Select button is used to navigate through the various
button	thermostat screens, including the weather screens. This button is
	located beneath the display.

Installing a Remote Sensor

Follow these steps to install the remote sensor:

1.Drill a 1/4" hole into the drywall where you want to install the sensor.

2.Fish the cable that connects to the sensor through the 1/4" hole in the wall until the edge of the sensor, where the cord meets the sensor, is flush against the wall.

3.Apply caulk, drywall putty, insulation, or any other appropriate sealant to the hole in the wall around the sensor to seal the hole.

4.Attach the connecting wires from the sensor to the S1 and S2 terminals on the thermostat.

Note: You can use a maximum of 300 ft (91.44 m) of 18 AWG wire for connecting the indoor/outdoor remote sensor to the thermostat.

The thermostat automatically defaults to using the on-board temperature sensor when you install it. For information about activating the remote sensor, consult the Activating the External Sensor section of the ViewStat Color Communciating Thermostat User Guide.

Mounting the Base to a Wall

You should only mount the thermostat onto a sheetrock wall with the anchors and screws provided with the unit. There are four screw holes located on the base of the thermostat. No tools are required to disassemble the thermostat— simply use your hands to pull the front panel off of the base.

1.Place the base over the wire hole opening in the wall. Level the base (leveling required for appearance only) and mark the screw hole mounting locations.

2.Using the supplied wall anchors, drill 1/4" hole in the center of the marked locations, and tap the wall anchors into the holes. If using the supplied screws only, drill a 3/32" hole in the center of the marked locations.

Note: Minimize the wire entry hole size and seal. Drafts from inside the wall could affect temperature readings.

3.Fasten the base to the wall with the supplied screws.

4.Seal the wire entry with caulk, drywall putty, or insulation.

Wiring the Thermostat

Note: A qualified HVAC technician should perform these steps to ensure proper termination.

1.Make sure the HVAC system power is off.

2.Strip 1/4" (0.63 cm) of insulation from each wire you are using.

3.Secure the wires into the terminals on the base according to the appropriate wiring diagram. Use color-coding practices (i.e. white wire to W terminal) whenever possible.

4.Check each wire to ensure it is securely fastened, not broken, and any exposed wires are not touching each other.