AMX ViewStat manual Heat Pump Applications, Humidity Control VST-TRH only

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Support Module Installation and Wiring

The ViewStat will not display temperature or humidity (Sensor 1 or Sensor 2) values if DIP switch 6 is set to T1/T2 without wiring a sensor to the T1/T2 terminal.

If a sensor is connected to the T1/T2 terminal; DIP switch 6 MUST be set to Off or an invalid temperatures will be reported to the ViewStat.

Applications

Heat Pump Applications

If the support module is being used with a heat pump thermostat with auxiliary heat, the thermostat can be configured to disable the use of auxiliary heat during warm weather and to lock out the compressor when the outdoor temperature is too cold. This allows for the most efficient use of energy.

At warmer temperatures, a heat pump will operate much more efficiently than the auxiliary heat. It can save energy to disable auxiliary heat in some cases, for example, when returning from a setback on a mild day. The temperature above which auxiliary heat is disabled is the auxiliary lockout temperature or high balance point. Refer to the thermostat user manual for a detailed explanation.

Air-to-air heat pumps become less efficient as the outdoor temperature drops. The temperature at which it becomes more efficient to use auxiliary heat instead of the heat pump is the balance point or low balance point.

Configure the temperature sensor (T1/T2) that you are using to sense outdoor temperature to the "Monitor" mode by setting the DIP switch 3 to the "off" position and the support module address to number 1. The high and low balance points are set at the thermostat.

Humidity Control (VST-TRH only)

In order to set your thermostat up as a humidity controller, you will need at least one (up to four for averaging) VST-TRH (temperature/humidity) support module(s) wired to the thermostat.

1.Locate the VST-TRH Support Module in the area that you want to control humidity.

2.Set the T3/T4 sensor (Humidity) Input to "Control" by moving the # 4 DIP switch to the "on" position. Up to four T3/ T4 humidity sensors can be set to control and the reported values will be averaged and displayed on the thermostat.

None of the temperature sensors connected to this ViewStat can be set to control mode because a control temperature input to the ViewStat will override a control humidity input. Make sure all temperature sensors connected to this ViewStat are set to "Monitor".

3.Once the humidity control sensor(s) have been wired to the ViewStat, the thermostat display will change to indicate % RH instead of °F/°C. The thermostat mode selections will also change to reflect humidity control. The modes are "Humidify", "Dehumidify", "Humidify or Dehumidify" and "Off". Humidification/ Dehumidification set points are changed the same way that temperature control set points would be changed.

Mode of Operation Set to "Humidify"

The B terminal is continually energized in the "Humidify" mode. When the thermostat calls for humidity, the W1/HUM terminal will energize. If the minimum off time of 2 minutes has not elapsed since the previous call, no terminals will energize until it has. All energized terminals will remain energized for the minimum on time of 2 minutes.

Mode of Operation Set to "Dehumidify"

The O terminal is continually energized in the "Dehumidify" mode. When the thermostat calls for dehumidification, the Y1/DEHUM terminal will energize. If the minimum off time of 4 minutes has not elapsed since the previous call, no terminals will energize until it has. All energized terminals will remain energized for the minimum on time of 4 minutes.

ViewStat Communicating Thermostat

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Contents ViewStat AMX Limited Warranty and Disclaimer Table of Contents Support Module Installation and Wiring Operating the Thermostat Table of Contents ViewStat Communicating Thermostat Introduction Product InformationSystem Components ViewStat SpecificationsViewStat Specifications System ComponentsHWD Support Module SpecificationsCircuit Board Components EnclosureMaximum Cable Distances VST-TTM and VST-TRH Remote Sensor SpecificationsMaximum Cable Distances Hvac System Pre-installation Check List Hvac System Pre-Installation Check ListApplication # of Hvac Wiring Diagram Wires Product Information ViewStat Communicating Thermostat Stand-alone thermostat mounting criteria Disconnecting Power to All Hvac EquipmentWith remote temperature sensors Selecting the Thermostat LocationPulling the front panel off of the base Removing the Faceplate from the BaseApplication Switch Setting the DIP SwitchReassembly DIP Switch SettingsBlack to C Red to R Attaching the MiniVerter to the ViewStatInserting the MiniVerter into the mounting bracket top view Wiring the VST-TSTAT to a VST-DIST Distribution PanelCommunications Mounting the Base to a WallNetLinx RJ-45 Pinout Information EIA/TIA 568 B Connecting the ViewStat to AMX Control SystemsPin Wire Color Polarity Function PHASTLink RJ-45 Pinout Information EIA/TIA 568 aCTS Axcess System Card Edge PinoutsPin GNDTX+ DB-9 Pinouts Wiring and Baud ConfigurationsRXD TXDDB-9 Pinouts Wiring and Baud Configurations NXC-COM2 Pinouts NXC-COM2 Wiring Configuration Connecting to a NetLinx Master controller via NXC-COM cardRJ-45 Pinout Information Connecting to a LandMark Control SystemInstalling the Cat5 Suppression Ferrite Connecting to a NetLinx Control SystemInstalling the 24 VAC Suppression Ferrite Connecting ViewStat to the Hvac SystemCommunication Terminal Wiring the ThermostatCommunication and Equipment terminal wiring definitions Communication and Equipment Terminal Wiring DefinitionsDEH/Y1 Connecting the ViewStat to the Hvac SystemRed Black Power common From MiniVerter Checking Hvac System Operation Check Out ProcedureTo access these Hvac set-up features Optional Hvac Set-Up FeaturesAddress the Thermostats and Set Highest Address Write down the address for each thermostat Single-stage furnace and AC configuration Wiring DiagramsTwo-stage furnace and two-stage AC configuration Two-stage furnace and two-stage AC configurationViewStat Installation and Wiring Boiler with AC two transformers configuration Boiler with AC two transformers configurationSingle-stage heat pump configuration Single-stage heat pump configurationTwo-stage heat pump configuration Two-stage heat pump configurationViewStat Single Support Module Installation Installing the VST-TTM and VST-TRH Support ModulesChoosing a mounting location Removing the circuit board Multiple Support Module InstallationDaisy-chaining support modules Setting the Support Module DIP SwitchesDIP switch 6 T1/T2 or Onboard Sensor DIP switches 1 and 2 AddressDIP switch 3 Temperature Sensor Dip switch 4 Humidity Sensor 2 VST-TRH support module onlyHeat Pump Applications ApplicationsHumidity Control VST-TRH only Troubleshooting Remote Sensors Set Up and Configuration Thermostat Button Lockout Network Override Set-UpSecurity Set-Up Master key password isBacklighting Set-Up Temperature Set-UpTemperature Control Options Communications Set-UpDisplay Set-Up Options Balance Point Set-UpDisplay Set-Up Balance Point OptionsDisplay set-up VST = VST1 = VST2 = Vstops = AMXViewStat NetLinx Module OverviewVSTZoneCnt Scale Dev VSTArry VST1 Interface between the NetLinx program and the NetLinx module ViewStat ModelCommand Interface SENDCOMMANDs Command Interface SENDCOMMANDsCommand Description Stat FMODE? Stat FAN?FAN? Tstat FMODE-valHOLD-ON Stat HMODE?HMODE? Tstat HOLD-valLOCK-ON Tstat LIGHT-valLIGHT-T Tstat LOCK-valTstat OUTTEMP? Tstat MSG-textTstat OUTHUM? OUTHUM?String Feedback String FeedbackString Description Tstat HUM-val Stat FAN-valFAN-1 HEAT-68OUTHUM-68 Stat ID-valStat MENU-val Tstat OUTHUM-valMSG-2, Went shopping Tstat TEMP-valTEMP-76 Stat TIME-valPage Message Display Mode buttonAdjust buttons Front Panel ComponentsMain Display Fan buttonEnter button Main displayHeat Selecting the ModeOperating The Thermostat CoolCleaning the Thermostat Case Of Power FailureOperating the Thermostat ViewStat Communicating Thermostat It’s Your World Take Control

ViewStat specifications

AMX ViewStat is a revolutionary thermostat solution designed for both residential and commercial environments, providing robust control over heating, ventilation, and air conditioning (HVAC) systems. This intelligent device stands out for its user-friendly interface, advanced technology integration, and versatility in various settings.

One of the main features of AMX ViewStat is its intuitive touch screen interface, which enables users to easily navigate through settings and preferences. This 4.3-inch color display not only enhances usability but also allows for customization, offering users the ability to personalize the user experience according to their lifestyle and preferences. Whether adjusting temperature settings or scheduling heating/cooling cycles, the interface ensures a seamless interaction.

Among its key technological advancements is the integration of Wi-Fi connectivity. By connecting to a home or building's network, users can remotely access and control the thermostat through a smartphone, tablet, or computer. This level of control facilitates energy savings, as users can monitor and adjust settings from anywhere, leading to optimized usage and reduced utility bills.

AMX ViewStat is compatible with various HVAC systems, accommodating both conventional and heat pump setups. Its flexibility in adapting to different configurations makes it suitable for diverse applications, from single-family homes to large commercial spaces.

Moreover, the device incorporates advanced energy management features, granting users insights into their energy usage patterns. This data-driven approach allows users to make informed decisions about their energy consumption, ultimately promoting a more sustainable lifestyle.

In addition to its primary functions, AMX ViewStat integrates with other AMX control solutions, enabling a centralized command for home or office automation. When combined with AMX automation systems, users can achieve a fully integrated environment where lighting, security, and entertainment systems work in harmony with heating and cooling controls.

The construction of AMX ViewStat is robust yet stylish, designed to fit seamlessly into any decor. Available in multiple finishes, it adds a touch of elegance while ensuring durability and functionality.

In conclusion, AMX ViewStat is a state-of-the-art thermostat solution that offers a blend of advanced technology, ease of use, and energy efficiency. With features like remote connectivity, compatibility with various HVAC types, and integration with broader automation systems, it stands as a comprehensive solution for modern living and working environments.
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