AMX ENV-VST-C Installation Manual

5. On the User Preferences screen, use the navigation buttons to highlight
More, and press Mode/Select to access the second User Preferences
screen.
6. On the second User Preferences screen, use the navigation buttons to
highlight More, and press Mode/Select to access the third User
Preferences screen.
7. Use the navigation buttons to highlight Advanced Setup, and press
Mode/Select to access the Advanced Setup screen.Use the navigation
buttons to highlight More, and press Mode/Select to access the second
User Preferences screen.
8. On the second User Preferences screen, use the navigation buttons to
highlight More, and press Mode/Select to access the third User
Preferences screen.
9. Use the navigation buttons to highlight Advanced Setup, and press
Mode/Select to access the Advanced Setup screen.
10. With HVAC System highlighted, press Mode/Select to indicate the type of
HVAC system you are using.
Setting the Balance Point for a Heat Pump System
Balance Point configuration enables you to adjust a balance point to limit
auxiliary heat pump operation according to the current outdoor temperature. The
balance point establishes the outdoor temperature at which time the heat pump
turns off and remains off until the outdoor temperature exceeds the balance
point again. For example, if the balance point is set to 25 degrees and the
outdoor temperature is 25 degrees or less, the heat pump remains off until the
temperature exceeds 25 degrees again. The compressor terminals will not be
energized when the outdoor temperature is below the balance point. This does
not affect Emergency Heat operation.
Note: This option is only necessary if the thermostat has been configured to
operate as a heat pump.
Perform these steps to set the balance point:
1. From the Main screen, press Mode/Select until the Thermostat Mode
screen appears.
2. Use the navigation buttons to select Settings, and press Mode/Select.
The Settings screen appears.
3. Use the navigation buttons to select Advanced Setup, and press
Mode/Select to access the Security Code screen.
4. Enter the security code, and select Enter to access the User Preferences
screen.
5. Use the navigation buttons to highlight More, and press Mode/Select to
access the second User Preferences screen.
6. On the second User Preferences screen, use the navigation buttons to
highlight More, and press Mode/Select to access the third User
Preferences screen.
7. Use the navigation buttons to highlight Advanced Setup, and press
Mode/Select to access the Advanced Setup screen.
8. Use the navigation buttons to highlight More, and press Mode/Select to
access the second Advanced Setup screen.
9. Use the navigation buttons to highlight Thermostat Setup, and press
Mode/Select to access the Thermostat Setup screen.
10. Use the navigation buttons to highlight More, and press Mode/Select to
access the second Thermostat Setup screen.
11. With Balance Point highlighted, press Mode/Select to activate it.
12. Press Mode/Select to indicate the balance point.
13. Use the navigation buttons to highlight Exit, and press Mode/Select to
return to the second Advanced Setup screen.
Security Code
You must enter a security code to access the advanced setup options on the
thermostat. The default security code is 1988. Perform the following steps to
enter the security code.
1. On the Main screen, press Mode/Select to access the Settings screen.
2. Use the navigation buttons to select Advanced Setup.
3. Press Mode/Select to access the Security Code screen.
4. Use the navigation buttons to scroll through the numbers until you reach
the first digit in the code, and press Mode/Select to move to the next digit
in the code.
5. Repeat the previous step until you have entered the full four-digit code.
6. Press Mode/Select while Enter is selected. If the code is correct, the User
Preferences screen appears.
For full warranty information, refer to the AMX Instruction Manual(s) associated with your Product(s).
10/10
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AMX reserves the right to alter specifications without notice at any time.
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Turning on Diagnostic Mode
Diagnostic Mode enables you to activate a mode during which you can test the
functionality of the thermostat. With Diagnostic Mode turned on, the cycle rate
no longer applies and you can enter the Advanced Settings sections without
entering a security code. Text appears on the Main screen notifying you when
Diagnostic Mode is active. Perform the following steps to turn on Diagnostic
Mode:
1. From the Main screen, press Mode/Select to access the Thermostat Mode
screen.
2. Use the navigation buttons to select Settings, and press Mode/Select. The
Settings screen appears.
3. Use the navigation buttons to select Advanced Settings. Press Mode/
Select to access the Security Code screen.
4. Enter the security code, and select Enter to access the User Preferences
screen. See the Security Code section for more information.
5. Use the navigation buttons to highlight More, and press Mode/Select to
access the second User Preferences screen.
6. On the second User Preferences screen, use the navigation buttons to
highlight More, and press Mode/Select to access the third User
Preferences screen.
7. Use the navigation buttons to highlight Advanced Setup, and press
Mode/Select to access the Advanced Setup screen.
8. Use the navigation buttons to highlight More, and press Mode/Select to
access the second Advanced Setup screen.
9. Use the navigation buttons to highlight More, and press Mode/Select to
access the third Advanced Setup screen.
10. With Diagnostic Mode highlighted, press Mode/Select to toggle the mode
setting to On.
11. Use the navigation buttons to highlight Exit, and press Mode/Select to
return to the Main screen.
Changing the Heating and Cooling Setpoints
You can change the heating and cooling setpoints on the Main screen. Setting
the temperature on this screen creates a constant heating and cooling setpoint
that runs as long as you have these setpoints enabled.
1. On the Main screen, press either of the navigation buttons to access the
heating or cooling setpoints that appear on the left side of the screen.
When either of the setpoints blinks, you can change the setpoint by using
the navigational buttons to increase or decrease its value.
2. Press Mode/Select to select the next setpoint, and use the navigational
buttons to increase or decrease its value.
The setpoints continue to blink and are able to be changed until the thermostat
reaches a 10-second timeout.
Changing the Heating/Cooling Mode
You can access Hold mode by holding Mode/Select for three seconds while on
the Main screen. With the Hold mode menu open, press Mode/Select one time
and a menu with heating/cooling options appears.
Perform these steps to change the Heating/Cooling mode:
1. On the Main screen, hold Mode/Select for three seconds. The Hold Mode
menu appears.
2. Press Mode/Select to open the Heating/Cooling mode menu.
3. Use the navigational buttons to select the option you want.
4. Press Mode/Select to activate the selected mode.
Changing the Fan Settings
The thermostat has two separate settings to configure the fan on your HVAC
system. You can use the Fan State option to set the fan state to On, which runs
the fan continuously, or Auto, which runs the fan when the heating and cooling
settings determine it should do so. You can also set the Fan Speed option to
Low, Medium, or High. If you are unable to change the fan settings, make sure
the fan lock is not turned on. Perform the following steps to change the fan
settings:
1. On the Main screen, press Mode/Select until the Thermostat Mode screen
appears.
2. Use the navigation buttons to select Settings, and press Mode/Select. The
Settings screen appears.
3. Press Mode/Select to select Fan State.
4. Use the navigation buttons to toggle the Fan State between On and Auto.
5. Press Mode/Select to select Fan Speed.
6. Press Mode/Select to select the appropriate Fan Speed.
93-2050-12
ATTENTION: READ THIS FIRST!
For more detailed installation, configuration, programming, and operating
instructions, or for other wiring diagrams not shown here, 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
Overview
The ENV-VST-C ViewStat Color Communicating Thermostat (FG2050-12K)
(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
subscription 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 amp through any one output.
Current
Minimum 24VAC, 48VA
System Power
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
Operating • Temperature: 40°-99° F (5°-37° C)
Range
• Humidity: 5%-95% RH non-condensing
Certifications IC, FCC Class B, CE, and IEC60950
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.
REV: D

Installation Guide

ENV-VST-C ViewStat Color Communicating Thermostat
ViewStat Color Communicating Thermostat Specifications (Cont.)
Circuit Board Components:
Communication Terminals with captive-wire connectors that connect 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 (FG070-518), three-year subscription
Optional ENV-VST-TSF ViewStat Indoor Flush Mount Temperature Sensor
Accessories: (FG2050-21)
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 Communicating
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.