Rooftop Unit, Heat Pump and Indoor Air Quality Application Guide VT8600 Series Room Controllers TABLE OF CONTENTS Overview VT8600 Rooftop Unit Heat Pump and Indoor Air Quality Controllers VT86X0U5X00B Heating / 2 Cooling for Rootop Unit and Indoor Air Quality VT86X0U5X00B Cooling / Modulating Heat for Rootop Unit and Indoor Air Quality Fresh Air Damper Control Sequences Economizer Control Only Economizer Control Mode and Fresh Air Measurement Station Economize Control Mode and CO2 Level Control Economizer
Application Guide VT8600 Rooftop, Heat Pump and Indoor Air Quality Controller 2 OVERVIEW VT8600 The VT8600 Rooftop, Heat Pump and Indoor Air Quality Controller is cost-effective solution for upgrading rooftop unit thermostats. The application allows existing wiring between the rooftop unit and the Room Controller to be re-used, reducing overall costs and installation time. The VT8600 can also add features like CO2 and fresh air monitoring to the existing functions of a rooftop unit.
Application Guide VT8600 Rooftop, Heat Pump and Indoor Air Quality Controller VT8600 ROOFTOP UNIT, HEAT PUMP AND INDOOR AIR QUALITY ROOM CONTROLLERS Commercial and Hospitality Interface (Local Override and Degrees C/F Selection) Power Part Number Description PIR Sensor Communication VT86X0U5X00B BACnet® fan coil terminal equipment controller No BACnet® VT86X0U5X00B BACnet® fan coil terminal equipment controller Yes BACnet® ZigBee Pro Module for SE(R)8300 Series Part Number Description VCM8
Application Guide VT8600 Rooftop, Heat Pump and Indoor Air Quality Controller 4 VT86X0U5X00B 2 HEATING / 2 COOLING FOR ROOFTOP UNIT AND INDOOR AIR QUALITY Fresh air measurement station Filter Cooling coil Fan Heating coil Outside air sensor Outside air Control Board Supply air DPS Return air Supply air sensor CO2 air sensor ZigBee® Pro Optional wireless communication BACnet MS/TP Wired communication protocol Configuration Parameter Name UI17 UI19 Econo.
Application Guide VT8600 Rooftop, Heat Pump and Indoor Air Quality Controller 1 C UO 12 UO 11 - Heat UO 9 - W2 UO 10 - Econo RH 2 3 4 5 6 BO 8 - W1 RC (24 Vac) C (Common) BO 4 - G BO 3 - Y1 BO 2 - Y2 BO 1 - Aux VT8600 2 Heating / 2 Cooling OUT R C AIR FLOW MEASURING STATION (0-10 VDC) R CO2 TRANSMITTER 7 8 9 10 11 12 (0-10 VDC) OUT ECONO W2 C R G Y1 FILTER DPS Y2 SAT SENSOR OAT SENSOR Sequence of Operation and Wiring Options Occupied Mode Setpoints revert to those defi
Application Guide VT8600 Rooftop, Heat Pump and Indoor Air Quality Controller 6 VT86X0U5X00B 2 COOLING / MODULATING HEAT FOR ROOFTOP UNIT AND INDOOR AIR QUALITY Optional economizer damper control output Cooling coil Fan Heating coil Airflow direction Outdoor air sensor Control Board Supply air DPS Return air Supply air sensor ZigBee® Pro Optional wireless communication BACnet MS/TP Wired communication protocol UI17 UI19 Econo.
Application Guide VT8600 Rooftop, Heat Pump and Indoor Air Quality Controller C UO 12 UO 11 - Heat UO 9 - W2 UO 10 - Econo RH R C 7 8 9 10 11 12 (0-10 VDC) OUT R G Y1 FILTER DPS Y2 SAT SENSOR OAT SENSOR UI 24 - Airflow UI 23 - OS UI 22 - SS Common UI 20 - RS UI 19 - CO2 19 20 21 22 23 24 Common UI 17 UI 16 BACnet BACnet REF + (0-10 VDC) R (0-10 VDC) C BACnet AIR FLOW MEASURING STATION CO2 TRANSMITTER Mod.
Application Guide VT8600 Rooftop, Heat Pump and Indoor Air Quality Controller 8 FRESH AIR DAMPER CONTROL SEQUENCES The fresh air damper can be controlled through more than one sequence to achieve different control strategies such as free cooling (economizer mode), minimum fresh air control and CO2 level control.
Application Guide VT8600 Rooftop, Heat Pump and Indoor Air Quality Controller Economizer Control Mode and Fresh Air Measurement Station Fresh air measurement station Cooling coil Fan Heating coil Outside air sensor Outside air Control Board Supply air Return air Supply air sensor ZigBee® Pro Optional wireless communication BACnet MS/TP Wired communication protocol If the fresh air damper is to be used for both free cooling and minimum fresh air volume control (economizer mode and fresh air me
Application Guide VT8600 Rooftop, Heat Pump and Indoor Air Quality Controller 10 Economizer Control Mode and CO2 Level Control Cooling coil Fan Heating coil Outside air sensor Outside air Control Board Supply air Return air Supply air sensor CO2 air sensor ZigBee® Pro Optional wireless communication BACnet MS/TP Wired communication protocol If the fresh air damper is to be used for both free cooling and CO2 level control (economizer mode and CO2 level control, but without fresh air measurement
Application Guide VT8600 Rooftop, Heat Pump and Indoor Air Quality Controller Economizer Control Mode, CO2 Level Control and Fresh Air Measurement Station Fresh air measurement station Cooling coil Fan Heating coil Outside air sensor Outside air Control Board Supply air Return air Supply air sensor CO2 air sensor ZigBee® Pro Optional wireless communication BACnet MS/TP Wired communication protocol If the fresh air damper is to be used for both free cooling and CO2 level control with a fresh
Application Guide VT8600 Rooftop, Heat Pump and Indoor Air Quality Controller 12 APPENDIX A PASSIVE INFRA-RED (PIR) MOTION DETECTOR COVER SPECIFICATIONS PIR cover sequence of operation Initially, the controller is in Stand-by mode. Stand-by setpoints are used at the controller. As soon as the PIR detects motion, the Occupancy status switches to Occupied and the Stand-By Time timer is reset. The Occupied setpoints are used.
Application Guide VT8600 Rooftop, Heat Pump and Indoor Air Quality Controller APPENDIX B OPTIONAL NETWORK SET-UP BACnet® communication wiring BACnet thermostat 1 BACnet thermostat 2 BACnet thermostat 3 Wireless Communication + - ref + - ref + - ref Notes: - Wiring should be daisy chained - Respect polarity - If using 2 conductors shielded wires, connect the shield of each feed together on the back of the controller. ONLY ground the shield at one location.
Application Guide VT8600 Rooftop, Heat Pump and Indoor Air Quality Controller 14 APPENDIX D SED SERIES WIRELESS SENSORS Wireless ZigBee ® Pro Motion Sensors and Door/Window Switch Wireless door switches used with an onboard or remote PIR sensor provide advanced local occupancy routines allowing for increased energy savings during occupied hours without sacrificing occupant comfort.
Application Guide VT8600 Rooftop, Heat Pump and Indoor Air Quality Controller LED LED LED SED-CMS SED-WDS SED-WMS SED-WIN SED-DOR LED Hidden switch Hidden Hidden switch switch Hidden switch APPENDIX E TERMINAL CORRESPONDENCE The terminals of an VT8600 are identified differently and have a wider range of possible functions compared to those of any of the VT7000 series Room Controllers.
