Page 2 - AMX Limited Warranty and Disclaimer
AMX Limited Warranty and Disclaimer AMX Corporation warrants its products to be free of defects in material and workmanship under normal use for three (3) years from the date of purchase from AMX Corporation, with the following exceptions: • Electroluminescent and LCD Control Panels are warranted fo...
Page 3 - Table of Contents
Table of Contents i ViewStat Communicating Thermostat Table of Contents Product Information ........................................................................................... 1 Introduction ........................................................................................................
Page 4 - First- stage radiant floor heat, second-stage furnace one stage
ii ViewStat Communicating Thermostat Table of Contents Address the Thermostats and Set Highest Address................................................ 24 Wiring Diagrams ..................................................................................................... 26 Single-stage furnace and ...
Page 7 - Product Information; Introduction; ViewStat Installation and Wiring
Product Information 1 ViewStat Communicating Thermostat Product Information Introduction The ViewStat Communicating Thermostat (FIG. 1) operates similarly to a conventional thermostat but has the unique capability of being controlled, either locally or remotely from a NetLinx or Landmark control sys...
Page 8 - System Components; ViewStat Specifications
Product Information 2 ViewStat Communicating Thermostat System Components The components in a complete ViewStat system (including optional accessories) are listed below: ViewStat Specifications System Components Component Name Description ViewStat (VST) Communicating thermostat VST-TTM Temperature s...
Page 9 - Support Module Specifications; There are two types of support modules available for the ViewStat:; VST-TTM Temperature Module; : The VST-TTM support module offers versatility in climate; VST-TRH Temperature and Humidity Module; : The VST-TRH support module brings further
Product Information 3 ViewStat Communicating Thermostat Support Module Specifications There are two types of support modules available for the ViewStat: VST-TTM Temperature Module : The VST-TTM support module offers versatility in climate control. A set of onboard dip switches on the VST-TTM circuit...
Page 10 - Maximum Cable Distances; VST-TTM and VST-TRH Remote Sensor Specifications
Product Information 4 ViewStat Communicating Thermostat The ViewStat supports up to four Support Modules, and can display any one of the following: The remote temperature on support module address 1 if its mode is set to "Control". The average temperatures of all support modules set to "...
Page 11 - HVAC System Pre-Installation Check List; HVAC System Pre-installation Check List; section on page 7
Product Information 5 ViewStat Communicating Thermostat HVAC System Pre-Installation Check List Before getting started, determine what type of heating system is/will be installed in the house. Then use the following table to determine if the proper numbers of wires are available, depending on the HV...
Page 13 - Disconnecting Power to All HVAC Equipment; Stand-alone thermostat mounting criteria; Support
ViewStat Installation and Wiring 7 ViewStat Communicating Thermostat ViewStat Installation and Wiring This section covers the installation, wiring and checkout of a ViewStat Communicating Thermostat System. Disconnecting Power to All HVAC Equipment Since the ViewStats are wired directly to the HVAC ...
Page 14 - Removing the Faceplate from the Base
ViewStat Installation and Wiring 8 ViewStat Communicating Thermostat Removing the Faceplate from the Base No tools are required to disassemble the thermostat – just use your hands to pull the front panel off of the base (FIG. 2). While holding the base of the thermostat, apply pressure to the base o...
Page 15 - DIP Switch Settings table; Reassembly; DIP Switch Settings
ViewStat Installation and Wiring 9 ViewStat Communicating Thermostat Setting the DIP Switch Set the DIP switch located on the thermostat circuit board (FIG. 4) according to the application needs (see the DIP Switch Settings table below for details). The following table shows what each switch corresp...
Page 16 - Attaching the MiniVerter to the ViewStat
ViewStat Installation and Wiring 10 ViewStat Communicating Thermostat Attaching the MiniVerter to the ViewStat Before attaching the MiniVerter to the rear of the ViewStat, connect the wiring, as described below: 1. Detach the faceplate from the base of the ViewStat. 2. Pull the stripped/tinned wires...
Page 17 - Wiring the VST-TSTAT to a VST-DIST Distribution Panel; is not required for communication.
ViewStat Installation and Wiring 11 ViewStat Communicating Thermostat 9. Connect the Cat-5 RJ-45 connector on the MiniVerter to the Control System (Master or ICSNet Hub). Wiring the VST-TSTAT to a VST-DIST Distribution Panel The optional VST-DIST Distribution Panel (not included) connects to up to e...
Page 18 - Mounting the Base to a Wall
ViewStat Installation and Wiring 12 ViewStat Communicating Thermostat Mounting the Base to a Wall There are four screw holes located on the base of the thermostat; two are for a junction box mounting, along with two for alternate mounting spacing. Use one of the holes on the top and one on the botto...
Page 19 - Fasten the base to the wall with the supplied screws.; Connecting the ViewStat to AMX Control Systems
ViewStat Installation and Wiring 13 ViewStat Communicating Thermostat 3. Fasten the base to the wall with the supplied screws. 4. Seal wire entry using caulk, drywall putty or insulation. Connecting the ViewStat to AMX Control Systems When a Mini Verter is used the Viewstat has a single RJ-45 jack o...
Page 20 - FIG. 8 shows the wiring configuration for Axcess systems:
ViewStat Installation and Wiring 14 ViewStat Communicating Thermostat Connecting to an Axcess Control System (via AXC-232++, AXB-EM232,or Axcent3/PRO) To connect the ViewStat to an Axcess control system via an Axcess Cardframe (cardframe must be equipped with an AXC-232 232/422/485 Control Card), AX...
Page 21 - Wiring and Baud Configurations
ViewStat Installation and Wiring 15 ViewStat Communicating Thermostat Connecting to an Axcess Master Controller via the RS232/422/485 (DB-9) Port The table below lists the connector pins, signal types, and signal functions for RS-232/RS-422/RS- 485 DB-9 (male) connector on an Axcess Master Controlle...
Page 23 - Connecting to a NetLinx Master controller via NXC-COM card; FIG. 11 shows the wiring configuration for NetLinx systems.
ViewStat Installation and Wiring 17 ViewStat Communicating Thermostat Connecting to a NetLinx Master controller via NXC-COM card The Viewstat can connect to a NetLinx NXF Cardframe or NXI equipped with a NXC-COM Dual COM Port Control Card. The following table shows the card edge pinout information f...
Page 24 - Connecting to a LandMark Control System; Insert the Cat5 cable.; Connecting to a NetLinx Control System; To connect a single ViewStat to a NetLinx control system
ViewStat Installation and Wiring 18 ViewStat Communicating Thermostat Connecting to a LandMark Control System PhastLink cables are used to connect all PhastLink-compatible devices, including keypads, dimmers, J-box IR devices, amplifiers, audio switches, etc. The table below lists the RJ-45 pinout i...
Page 25 - Connecting to a Landmark Control System; To connect a single ViewStat to a Landmark control system
ViewStat Installation and Wiring 19 ViewStat Communicating Thermostat Connecting to a Landmark Control System To connect a single ViewStat to a Landmark control system , use PhastLink cabling to connect the RJ-45 jack on the ViewStat to any available PhastLink jack on the Landmark Master (MCU). The ...
Page 26 - Wiring the Thermostat; Wiring Diagrams; Communication and Equipment terminal wiring definitions; Communication and Equipment Terminal Wiring Definitions
ViewStat Installation and Wiring 20 ViewStat Communicating Thermostat Wiring the Thermostat 1. Strip 1/4" (0.63 cm) of insulation from each wire to be used. 2. Secure wires into the terminals on the base according to the appropriate wiring diagram, as described in the following table. Refer to t...
Page 27 - Connecting the ViewStat to the HVAC System; Make sure the HVAC system power is off.
ViewStat Installation and Wiring 21 ViewStat Communicating Thermostat Connecting the ViewStat to the HVAC System 1. Make sure the HVAC system power is off. 2. The following figures (FIG. 14, FIG. 15) show wiring diagrams for several different HVAC equipment types. Use these diagrams as a reference o...
Page 28 - section on page 26
ViewStat Installation and Wiring 22 ViewStat Communicating Thermostat b. FIG. 15 shows a typical heat/cool wiring schematic: FIG. 15 Typical heat pump wiring schematic RC RH Y1 W1 G O W2 C RSC RSA RSB RSR R REF Y2 B- B+ A+ A- B CAUTION! ENSURE HVAC SYSTEM POWER IS OFF BEFORE WIRING USE 18-20 GA. THE...
Page 29 - Checking HVAC System Operation; Check Out Procedure
ViewStat Installation and Wiring 23 ViewStat Communicating Thermostat Checking HVAC System Operation Use the thermostat buttons to verify that the thermostat is controlling the equipment operation. A checkout procedure is supplied in the installation instructions supplied with thermostat. This proce...
Page 30 - Mode; Optional HVAC Set-Up Features; To access these HVAC set-up features; Set Up and; Address the Thermostats and Set Highest Address; Set Up and Configuration
ViewStat Installation and Wiring 24 ViewStat Communicating Thermostat 7. Use the up arrow button to raise the set point 3°F above room temperature. In 5-10 seconds, the first stage of heating begins and the HEAT message icon begins to flash. If there is a second stage it will begin in 4 minutes. Hea...
Page 31 - Write down the address for each thermostat.
ViewStat Installation and Wiring 25 ViewStat Communicating Thermostat 6. After the address has been selected, press the Enter button to store the address. 7. Use the Scroll Up and Scroll Down buttons to set the "Number of Stats on the Network" to the highest address that will be on the therm...
Page 32 - Single-stage furnace and AC configuration.
ViewStat Installation and Wiring 26 ViewStat Communicating Thermostat Wiring Diagrams Single-stage furnace and AC configuration. FIG. 18 Single-stage furnace and AC configuration ViewStat (from MiniVerter) Black(common) Red(power)
Page 33 - The B terminal is for reversing valve-heat. DO NOT connect the B
ViewStat Installation and Wiring 27 ViewStat Communicating Thermostat Two-stage furnace and two-stage AC configuration. FIG. 19 Two-stage furnace and two-stage AC configuration ViewStat (from MiniVerter) Black(common) Red(power) IMPORTANT! The B terminal is for reversing valve-heat. DO NOT connect t...
Page 39 - Support Module Installation and Wiring; Installing the VST-TTM and VST-TRH Support Modules; Choosing a mounting location
Support Module Installation and Wiring 33 ViewStat Communicating Thermostat Support Module Installation and Wiring Follow the guidelines for placement of the support modules (as described below), and locate the ViewStat indoors where the operating range of the ViewStat (32° - 99°F/0° - 37°C) will no...
Page 40 - Setting the Support Module; Multiple Support Module Installation
Support Module Installation and Wiring 34 ViewStat Communicating Thermostat 6. Snap the circuit board back into the sub-base by sliding the top of the board in first and then snapping down on the bottom. Check to be sure that the latch holds the board properly. 7. Strip ¼ inch of insulation from the...
Page 41 - Setting the; Setting the Support Module DIP Switches; in control mode
Support Module Installation and Wiring 35 ViewStat Communicating Thermostat 1. Remove the thermostat from the sub-base. 2. Wire the first sensor using the single support module instructions. Daisy chain the remaining support modules as shown below (FIG. 29). 3. Set the VST-TTM or VST-TRH Support Mod...
Page 42 - DIP switch 3: Temperature Sensor 1
Support Module Installation and Wiring 36 ViewStat Communicating Thermostat DIP switches 1 and 2: Address (1-4) The following diagram shows how to set the top two address DIP switches. Each support module must have its own address (1-4). DIP switch 3: Temperature Sensor 1 Each support module has two...
Page 43 - Applications; Heat Pump Applications; Humidify
Support Module Installation and Wiring 37 ViewStat Communicating Thermostat 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 o...
Page 44 - Troubleshooting Remote Sensors; Thermostat has no display:
Support Module Installation and Wiring 38 ViewStat Communicating Thermostat Troubleshooting Remote Sensors Thermostat has no display: Check 24 VAC supply. Check for incorrect wiring between the thermostat and support module. Incorrect wiring can damage the thermostat and transformer or blow a fuse i...
Page 45 - Temperature Control; Enter
Set Up and Configuration 39 ViewStat Communicating Thermostat Set Up and Configuration The ViewStat has many features that can be adjusted to customize operations. Temperature Control Set Up , Balance Point Set Up and Communications Set Up , in particular, should only be adjusted with the help of a ...
Page 46 - Network Override Set-Up
Set Up and Configuration 40 ViewStat Communicating Thermostat Network Override Set-Up This enables or disables the Network Override feature. When Network Override has been invoked the thermostat will only respond to the buttons of the thermostat; commands sent by the automation system are ignored. P...
Page 47 - To reset the password to 7777, you must cycle power to the ViewStat.
Set Up and Configuration 41 ViewStat Communicating Thermostat Security Set-Up This prevents unauthorized individuals from accessing Thermostat Set-Up. A code can be setup that must be entered to gain entry into Thermostat Set-Up (FIG. 35). FIG. 36 shows the display when a password has been activated...
Page 48 - Communications Set-Up; Temperature Control Options
Set Up and Configuration 42 ViewStat Communicating Thermostat Communications Set-Up This is where the thermostat address is entered. Additionally, the total number of thermostats (or the highest addressed stat on the network) is entered here to optimize communication timing. Consult a qualified serv...
Page 49 - Display Set-Up Options
Set Up and Configuration 43 ViewStat Communicating Thermostat Balance Point Set-Up Balance points limit heat pump operation when the outdoor temperature is too high or too low. It requires an optional support module with an outdoor temperature sensor. Consult a qualified HVAC service technician befo...
Page 52 - When acting as a humidity sensor,; The ViewStat Model; System; : This refers the controller and all that it controls.; Zone
Using the NetLinx Module to Program the ViewStat 46 ViewStat Communicating Thermostat It is important that the serial number array be the same length as the device array. If the serial number array happens to be shorter, the length will be set to that of the device array and the new members of the a...
Page 53 - The supported commands are listed below
Using the NetLinx Module to Program the ViewStat 47 ViewStat Communicating Thermostat cool setpoint would be set to 72. While the temperature is within this range nothing is done. Once the temperature falls outside this range the system takes action and switches to the appropriate mode. 5. Humidify/...
Page 58 - String Feedback
Using the NetLinx Module to Program the ViewStat 52 ViewStat Communicating Thermostat String Feedback The NetLinx module will provide feedback to the glue code for ViewStat system changes via string events. Below are the strings supported. Data coming from the module will be in the form of strings. ...
Page 63 - Operating the Thermostat; Front Panel Components; Message Display; Permanent; Mode button
Operating the Thermostat 57 ViewStat Communicating Thermostat Operating the Thermostat This section describes the front panel components, and gives instructions for operating the ViewStat thermostat. FIG. 40 shows the front panel. Front Panel Components Message Display Two types of messages are disp...
Page 64 - Fan button; The following table describes the items on the Main display:; Main Display
Operating the Thermostat 58 ViewStat Communicating Thermostat Fan button The fan can be operated continuously (FAN ON) or only when there is a need to heat or cool. Enter button The Enter (or Network Override) button is used to override the home automation system, to clear temporary flashing message...
Page 65 - Operating The Thermostat; Notes on temperature adjustments:; Selecting the Mode; button until the desired mode appears on the display
Operating the Thermostat 59 ViewStat Communicating Thermostat Operating The Thermostat Notes on temperature adjustments: The COOL setting must always be a minimum of 2° (F or C) higher than the HEAT setting. The thermostat will automatically maintain the 2° difference. For example, if the Cooling se...
Page 66 - Setting temperatures; Press the; Fan operation; In Case Of Power Failure
Operating the Thermostat 60 ViewStat Communicating Thermostat – Setting temperatures Press the Up or Down adjust button . The setting to be changed will begin to flash. Press and hold the button to change the setting. If operating in the HEAT mode, the only temperature set point available to change ...
