AMX ViewStat Checking HVAC System Operation

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 procedure will verify only

that the thermostat operates the equipment.

The HVAC installer may need to connect 24VAC to the R and C terminals to check HVAC operation. If the

automation system is to be installed after the HVAC installation, leave the R and C terminals connected to

ensure the HVAC system operates. If the automation system is installed before either the placement of HVAC

wiring or an external power supply is used, then do not connect HVAC wires to R and C.

When the thermostat is first turned on all of the graphics of the main LCD are momentarily displayed; this will

look like FIG.16.

Check Out Procedure

Use the Check Out procedure (below) to determine if the thermostat is controlling the HVAC equipment.

1. Press the Mode button, and look for the OFF message on the Main display.

2. Press the Fan button. The system blower should start and the message FAN ON appears on the Main

display. Press Fan again to stop.

3. Press the Mode button until the COOL message appears, along with the current cool setting on the Main

display.

4. Use the down arrow button to lower the set point 3°F below room temperature. In 5 to 10 seconds the

first stage of cooling begins, and the COOL message icon begins to flash. If there is a second stage it will

begin in four minutes.

5. Press the Mode button until OFF appears n the Main display. During Check-out, change the mode to

override the Minimum On time delays.

6. Press the Mode button until the HEAT message appears, along with the current heat setting in the Main

display.

FIG. 16 Front panel (with all graphics on Main LCD displayed)

Message display

Scroll/Set-Up buttons

Main (LCD) display

Adjust buttons

The following check-out procedure will turn the heating and cooling equipment on

and off. Do not operate in cooling at low outdoor temperatures. Do not operate in

heating at high outdoor temperatures. Refer to the HVAC equipment manufacturer

specifications for safe operating temperatures.

Contents

Main AMX Limited Warranty and Disclaimer Table of Contents Support Module Installation and Wiring ...........................................................33 Using the NetLinx Module to Program the ViewStat .......................................45 Page Page Product Information Introduction System Components The components in a complete ViewStat system (including optional accessories) are listed below: ViewStat Specifications System Components ViewStat Specifications Support Module Specifications Maximum Cable Distances HVAC System Pre-Installation Check List Page ViewStat Installation and Wiring Disconnecting Power to All HVAC Equipment Selecting the Thermostat Location Stand-alone thermostat mounting criteria With remote temperature sensors Removing the Faceplate from the Base Setting the DIP Switch Reassembly Attaching the MiniVerter to the ViewStat 9. Wiring the VST-TSTAT to a VST-DIST Distribution Panel ViewStat Installation and Wiring FIG. 7 12 ViewStat Communicating Thermostat Mounting the Base to a Wall 1. locations (leveling required for appearance only). 2. 3. 4. Connecting the ViewStat to AMX Control Systems Connecting to an Axcess Control System (via AXC-232++, AXB-EM232, or Axcent3/PRO) Connecting to an Axcess Master Controller via the RS232/422/485 (DB-9) Port FIG.9 shows the wiring configuration for Axcess systems (using the DB-9 PROGRAM port). DB-9 Pinouts Wiring and Baud Configurations Connecting to NetLinx Integrated Controllers via the RS232/422/485 (DB-9) Port FIG.9 shows the wiring configuration for NetLinx systems (using the DB-9 PROGRAM port). DB-9 Pinouts Wiring and Baud Configurations Connecting to a NetLinx Master controller via NXC-COM card FIG.11 shows the wiring configuration for NetLinx systems. NXC-COM2 Pinouts NXC-COM2 Wiring Configuration Connecting to a LandMark Control System Installing the Cat5 Suppression Ferrite 1. 2. 3. Connecting to a NetLinx Control System Connecting to a Landmark Control System Connecting the ViewStat to the HVAC System Installing the 24 VAC Suppression Ferrite 1. 2. 3. Wiring the Thermostat 1. 2. 3. Communication and Equipment terminal wiring definitions Connecting the ViewStat to the HVAC System 1. 2. types. Use these diagrams as a reference only. Use color coding where possible. CAUTION! ViewStat Installation and Wiring 22 ViewStat Communicating Thermostat b. (from MiniVerter) CAUTION! ENSURE HVAC SYSTEM POWER IS OFF BEFORE WIRING INDOOR BLOWER/HEAT UNIT OUTDOOR HEAT PUMP UNIT Black (common) Checking HVAC System Operation Check Out Procedure 1. 2. 3. 4. Optional HVAC Set-Up Features To access these HVAC set-up features Address the Thermostats and Set Highest Address 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. Wiring Diagrams Single-stage furnace and AC configuration. Two-stage furnace and two-stage AC configuration. Roof top unit (two-stage heat and two-stage cool) configuration. Boiler with AC (two transformers) configuration. Single-stage heat pump configuration Two-stage heat pump configuration. Page Support Module Installation and Wiring Installing the VST-TTM and VST-TRH Support Modules Choosing a mounting location Single Support Module Installation 1. 2. 6. 7. 8. 9. 10. Setting the Support Module DIP Switches DIP switches 1 and 2: Address (1-4) DIP switch 3: Temperature Sensor 1 Dip switch 4: Temperature Sensor 2 (VST-TTM support module only) Dip switch 4: Humidity Sensor 2 (VST-TRH support module only) DIP switch 6: T1/T2 or Onboard Sensor Applications Heat Pump Applications Humidity Control (VST-TRH only) 1. 2. 3. Troubleshooting Remote Sensors Set Up and Configuration Set Up and Configuration 40 ViewStat Communicating Thermostat Network Override Set-Up FIG. 34 Thermostat Button Lockout FIG. 33 Security Set-Up Communications Set-Up Temperature Set-Up Backlighting Set-Up Balance Point Set-Up Display Set-Up Page Using the NetLinx Module to Program the ViewStat AMX_ViewStat NetLinx Module - Overview The ViewStat Model 1. 2. 3. 4. 5. Command Interface - SEND_COMMANDs 'T-1 HEAT-68' Page Page Page String Feedback String Feedback Page Page Page Page Operating the Thermostat Front Panel Components Message Display Scroll/Set-up buttons Mode button Fan button The fan can be operated continuously (FAN ON) or only when there is a need to heat or cool. The following table describes the items on the Main display: Enter button Main display Operating The Thermostat Selecting the Mode Setting temperatures Fan operation Backlight operation In Case Of Power Failure Cleaning the Thermostat