{
 "manufacturer": "Carrier",
 "manufacturer_slug": "carrier",
 "model": "VAV Zone II",
 "model_slug": "vav-zone-ii",
 "aliases": [
  "OPN-VAVB1-02",
  "OPN-VAVB3-02",
  "VAV Zone II Single Duct",
  "VAV Zone II Fan Terminal",
  "i-Vu VAV Zone II",
  "11-808-602-01"
 ],
 "equipment_type": "VAV terminal unit controller",
 "applies_to": "Single-duct (OPN-VAVB1-02) and fan-powered (OPN-VAVB3-02) VAV terminals controlled by the Carrier VAV Zone II.",
 "summary": "The VAV Zone II is Carrier's pressure-independent VAV box controller, sold as a single-duct model and a fan-terminal model with an integrated actuator and airflow sensor. It talks BACnet MS/TP (9600 to 76.8 kbps) or BACnet ARC156, addressed on two rotary switches, and usually exchanges data with its VAV Master and air source through Carrier linkage. The BACnet points cover setpoints, space and supply temperatures, airflow, damper position, occupancy, terminal mode and alarms.",
 "bacnet_transport": [
  "BACnet MS/TP",
  "BACnet ARC156"
 ],
 "firmware": null,
 "default_device_instance": null,
 "access_inferred": false,
 "notes": [
  "The points list also prints lux_bn (lux sensor) with no BACnet object ID; it is left out here.",
  "Terminal Mode (terminal_status, MSV:2006) runs across a page break in the guide; its states are joined from both pages.",
  "System points (system_spt, system_rh, system_iaq, system_oat, system_stpt_adj) default to -999, meaning no network value.",
  "Air Source points (link_*) and Airside Linkage Status only carry data when the zone is linked to a Carrier air source.",
  "The airflow setpoints are not in the BACnet list; Flow Input (AI:1) reports measured airflow."
 ],
 "source": {
  "title": "VAV Zone II Controllers Installation and Start-up Guide (Appendix D: BACnet points list)",
  "doc_number": "11-808-602-01",
  "revision_date": "2026-02-19",
  "url": "https://www.shareddocs.com/hvac/docs/1000/Public/0E/11-808-602-01.pdf"
 },
 "integration": {
  "summary": "Give the controller a unique MS/TP address on the rotary switches (the factory 00 must be changed) and match the network baud. For third-party occupancy control, disable Occupancy Schedules and write BAS On/Off (keypad_ovrde). Write occupied/unoccupied setpoints directly, and write system_spt if the space temperature comes from the network.",
  "minimum_points": [
   {
    "ref": "MV 1001",
    "name": "keypad_ovrde",
    "why": "BAS occupancy command: 2 = occupied, 3 = unoccupied"
   },
   {
    "ref": "BV 9001",
    "name": "shutdown",
    "why": "Network shutdown command"
   },
   {
    "ref": "AV 3001",
    "name": "occ_cl_stpt",
    "why": "Occupied cooling setpoint"
   },
   {
    "ref": "AV 3002",
    "name": "occ_ht_stpt",
    "why": "Occupied heating setpoint"
   },
   {
    "ref": "MV 2006",
    "name": "terminal_status",
    "why": "Current zone mode (heating, cooling, vent...)"
   },
   {
    "ref": "BV 2008",
    "name": "occ_status",
    "why": "Confirms occupied/unoccupied"
   },
   {
    "ref": "AV 2007",
    "name": "space_temp",
    "why": "Space temperature the zone controls to"
   },
   {
    "ref": "AI 1",
    "name": "flow_input",
    "why": "Measured airflow, CFM"
   },
   {
    "ref": "AV 1013",
    "name": "dpr_pos",
    "why": "Damper position, %"
   },
   {
    "ref": "BV 7001",
    "name": "spt_fail",
    "why": "No valid space temperature; local heat/cool off"
   }
  ],
  "enable": "BAS On/Off (keypad_ovrde, MSV:1001) gives a third-party BMS control of occupancy: 1 = Inactive, 2 = Occupied, 3 = Unoccupied. Occupancy Schedules must be set to Disable for it to work, and setting Occupied or Unoccupied turns Optimal Start off. Shutdown (BV:9001) stops the zone; VAV Reheat (BV:1029) and Heat Enable (BV:1012) enable reheat and heating.",
  "heartbeat": "No general heartbeat. A slave zone that was linked raises the Airside Linkage alarm (air_linkage_fail, BV:7030) if it gets no linkage data for 5 minutes.",
  "remote_sensors": "A network space temperature must be written to system_spt (AV:1902) every 1 to 5 minutes. Network RH, CO2, OAT and setpoint adjust go to system_rh, system_iaq, system_oat and system_stpt_adj; -999 means no network value. Without any valid space temperature the zone alarms and stops local heating and cooling.",
  "setup": [
   "MS/TP address is set on the Tens and Ones rotary switches; the factory 00 must be changed. The address is read at power-up.",
   "MS/TP runs at 9600, 19.2k, 38.4k or 76.8 kbps (DIP switches); ARC156 runs at 156 kbps via the ARC156/MS/TP jumper.",
   "A VAV Master can take up to 63 slave zones; linked controllers on one MS/TP network must be addressed in sequence."
  ],
  "gotchas": [
   "Shutdown (BV:9001) is printed with a default of Active (1) in this guide; check its state before commissioning.",
   "Never connect an MS/TP or ARCNET network to the Act Net port; it is only for Carrier actuators and Smart Valves.",
   "Air Source points read nothing on a stand-alone zone (no linkage)."
  ]
 },
 "points": [
  {
   "type": "AI",
   "instance": 1,
   "name": "flow_input",
   "description": "Flow Input",
   "units": "CFM",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 1003,
   "name": "oa_temp",
   "description": "Outdoor Air Temperature",
   "units": "°F",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 1006,
   "name": "stpt_adj",
   "description": "Setpoint Adjustment",
   "units": "°F",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 1008,
   "name": "sa_temp",
   "description": "Supply Air Temperature",
   "units": "°F",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 1009,
   "name": "iaq",
   "description": "Indoor Air Quality CO2 (ppm)",
   "units": "ppm",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 1011,
   "name": "space_rh",
   "description": "Space Relative Humidity",
   "units": "%rh",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 1013,
   "name": "dpr_pos",
   "description": "Damper Position",
   "units": "%",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 1017,
   "name": "stdby_offset",
   "description": "Standby Offset (default 0)",
   "units": "°F",
   "access": "W",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 1901,
   "name": "system_oat",
   "description": "System Outdoor Air Temperature (default -999)",
   "units": "°F",
   "access": "W",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 1902,
   "name": "system_spt",
   "description": "System Space Temperature (default -999)",
   "units": "°F",
   "access": "W",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 1903,
   "name": "system_iaq",
   "description": "System Space AQ (default -999)",
   "units": "ppm",
   "access": "W",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 1904,
   "name": "system_rh",
   "description": "System Space RH (default -999)",
   "units": "%",
   "access": "W",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 1913,
   "name": "system_stpt_adj",
   "description": "System Setpoint Adjustment (default -999)",
   "units": "°F",
   "access": "W",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 2007,
   "name": "space_temp",
   "description": "Space Temperature - Prime Variable",
   "units": "°F",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 2015,
   "name": "filter_rntm",
   "description": "Filter Runtime",
   "units": "hr",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 2016,
   "name": "ovrde_time",
   "description": "Override Time Remaining",
   "units": "min",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 2019,
   "name": "filter_service_hrs",
   "description": "Filter Service Alarm Timer (default 0)",
   "units": "hr",
   "access": "W",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 2030,
   "name": "htg_cap",
   "description": "Heating Capacity",
   "units": "%",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 2031,
   "name": "bas_bd_ht_cap",
   "description": "Baseboard Heating Capacity",
   "units": "%",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 2608,
   "name": "link_sat",
   "description": "Air Source Supply Air Temp",
   "units": "°F",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 2609,
   "name": "link_ahu_oat",
   "description": "Air Source Outdoor Air Temp",
   "units": "°F",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 2610,
   "name": "link_ahu_static",
   "description": "Air Source Static Pressure",
   "units": "in H2O",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 3001,
   "name": "occ_cl_stpt",
   "description": "Occupied Cooling Setpoint (default 75)",
   "units": "°F",
   "access": "W",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 3002,
   "name": "occ_ht_stpt",
   "description": "Occupied Heating Setpoint (default 70)",
   "units": "°F",
   "access": "W",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 3003,
   "name": "unocc_cl_stpt",
   "description": "Unoccupied Cooling Setpoint (default 90)",
   "units": "°F",
   "access": "W",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 3004,
   "name": "unocc_ht_stpt",
   "description": "Unoccupied Heating Setpoint (default 60)",
   "units": "°F",
   "access": "W",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 3005,
   "name": "eff_cl_stpt",
   "description": "Effective Cool Setpoint",
   "units": "°F",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 3006,
   "name": "eff_ht_stpt",
   "description": "Effective Heat Setpoint",
   "units": "°F",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 3011,
   "name": "occ_dehum_stpt",
   "description": "Occupied RH Control Setpoint (default 65)",
   "units": "%rh",
   "access": "W",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 9003,
   "name": "oat_ht_lockout",
   "description": "Heating Lockout Temperature (default 70)",
   "units": "°F",
   "access": "W",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 9006,
   "name": "cool_demand_level",
   "description": "Cooling Demand Level",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 9007,
   "name": "start_delay",
   "description": "Power Fail Restart Delay (default 60)",
   "units": "sec",
   "access": "W",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 9015,
   "name": "stpt_adj_range",
   "description": "Setpoint Adjustment Range (default 2)",
   "units": "delta °F",
   "access": "W",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 9024,
   "name": "fan_delay_off",
   "description": "Fan Off Delay (default 120)",
   "units": "sec",
   "access": "W",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 9028,
   "name": "occ_ovr_delay",
   "description": "Occ Override Delay (default 15)",
   "units": "min",
   "access": "W",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 9036,
   "name": "heat_demand_level",
   "description": "Heating Demand Level",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BI",
   "instance": 1001,
   "name": "occ_switch",
   "description": "Occupancy Contact State",
   "units": "",
   "access": "R",
   "states": "0=Open; 1=Closed"
  },
  {
   "type": "BV",
   "instance": 1003,
   "name": "sfan_status",
   "description": "Fan",
   "units": "",
   "access": "R",
   "states": "0=Off; 1=On"
  },
  {
   "type": "BV",
   "instance": 1012,
   "name": "ht_enable",
   "description": "Heat Enable (default Active (1))",
   "units": "",
   "access": "W",
   "states": "0=Disable; 1=Enable"
  },
  {
   "type": "BV",
   "instance": 1013,
   "name": "stpt_adj_enable",
   "description": "Setpoint Adjustment (default Active (1))",
   "units": "",
   "access": "W",
   "states": "0=Disable; 1=Enable"
  },
  {
   "type": "BV",
   "instance": 1029,
   "name": "vav_reheat",
   "description": "VAV Reheat (default Active (1))",
   "units": "",
   "access": "W",
   "states": "0=Disable; 1=Enable"
  },
  {
   "type": "BV",
   "instance": 2008,
   "name": "occ_status",
   "description": "Occupancy Status",
   "units": "",
   "access": "R",
   "states": "0=Unoccupied; 1=Occupied"
  },
  {
   "type": "BV",
   "instance": 2601,
   "name": "a_link_status",
   "description": "Airside Linkage Status",
   "units": "",
   "access": "R",
   "states": "0=Not Active; 1=Active"
  },
  {
   "type": "BV",
   "instance": 7001,
   "name": "spt_fail",
   "description": "Space Temp Sensor",
   "units": "",
   "access": "R",
   "states": "0=Normal; 1=Alarm"
  },
  {
   "type": "BV",
   "instance": 7004,
   "name": "sat_alarm",
   "description": "Supply Air Temperature",
   "units": "",
   "access": "R",
   "states": "0=Normal; 1=Alarm"
  },
  {
   "type": "BV",
   "instance": 7005,
   "name": "iaq_alarm",
   "description": "Indoor Air Quality",
   "units": "",
   "access": "R",
   "states": "0=Normal; 1=Alarm"
  },
  {
   "type": "BV",
   "instance": 7011,
   "name": "spt_hi_alarm",
   "description": "High SPT",
   "units": "",
   "access": "R",
   "states": "0=Normal; 1=Alarm"
  },
  {
   "type": "BV",
   "instance": 7012,
   "name": "spt_lo_alarm",
   "description": "Low SPT",
   "units": "",
   "access": "R",
   "states": "0=Normal; 1=Alarm"
  },
  {
   "type": "BV",
   "instance": 7017,
   "name": "filter_alarm",
   "description": "Filter",
   "units": "",
   "access": "R",
   "states": "0=Clean; 1=Dirty"
  },
  {
   "type": "BV",
   "instance": 7018,
   "name": "sprh_hi_alarm",
   "description": "Space Relative Humidity",
   "units": "",
   "access": "R",
   "states": "0=Normal; 1=Alarm"
  },
  {
   "type": "BV",
   "instance": 7029,
   "name": "oat_fail",
   "description": "Network OAT",
   "units": "",
   "access": "R",
   "states": "0=Normal; 1=Alarm"
  },
  {
   "type": "BV",
   "instance": 7030,
   "name": "air_linkage_fail",
   "description": "Airside Linkage Status",
   "units": "",
   "access": "R",
   "states": "0=Normal; 1=Alarm"
  },
  {
   "type": "BV",
   "instance": 7055,
   "name": "zs_config_fail",
   "description": "ZS/WS Sensor Configuration",
   "units": "",
   "access": "R",
   "states": "0=Normal; 1=Alarm"
  },
  {
   "type": "BV",
   "instance": 7064,
   "name": "ws_batt_alarm",
   "description": "Wireless Battery Strength Alarm",
   "units": "",
   "access": "R",
   "states": "0=Normal; 1=Alarm"
  },
  {
   "type": "BV",
   "instance": 7065,
   "name": "ws_sig_alarm",
   "description": "Wireless Signal Strength Alarm",
   "units": "",
   "access": "R",
   "states": "0=Normal; 1=Alarm"
  },
  {
   "type": "BV",
   "instance": 7517,
   "name": "filter_rntm_clr",
   "description": "Reset Filter Alarm (default Inactive (0))",
   "units": "",
   "access": "W",
   "states": "0=Off; 1=On"
  },
  {
   "type": "BV",
   "instance": 9001,
   "name": "shutdown",
   "description": "Shutdown (default Active (1))",
   "units": "",
   "access": "W",
   "states": "0=Inactive; 1=Active"
  },
  {
   "type": "MV",
   "instance": 1001,
   "name": "keypad_ovrde",
   "description": "BAS On / Off (default 1)",
   "units": "",
   "access": "W",
   "states": "1=Inactive; 2=Occupied; 3=Unoccupied"
  },
  {
   "type": "MV",
   "instance": 2003,
   "name": "spt_status",
   "description": "Space Temp Source",
   "units": "",
   "access": "R",
   "states": "1=Sensor Failure; 2=SPT Sensor; 3=T55 / T56; 4=Network; 5=Airside Linkage; 6=Locked Value; 7=ZS Sensor; 8=Wireless Sensor"
  },
  {
   "type": "MV",
   "instance": 2005,
   "name": "link_ahu_mode",
   "description": "Air Source Mode",
   "units": "",
   "access": "R",
   "states": "1=OFF; 2=WARM-UP; 3=HEAT; 4=COOL; 5=FREECOOL; 6=PRESSURIZE; 7=EVACUATE; 8=VENT"
  },
  {
   "type": "MV",
   "instance": 2006,
   "name": "terminal_status",
   "description": "Terminal Mode",
   "units": "",
   "access": "R",
   "states": "1=Off; 2=Heating; 3=Warm-Up; 4=Vent; 5=N/A; 6=Cooling; 7=Dehumidify; 8=Reheat; 9=Pressurize; 10=Evacuate; 11=Shutdown; 12=IAQ Override; 13=Air Balancing"
  },
  {
   "type": "MV",
   "instance": 2007,
   "name": "terminal_type",
   "description": "Terminal Type",
   "units": "",
   "access": "R",
   "states": "1=Single Duct; 2=Parallel Fan; 3=Series Fan"
  },
  {
   "type": "MV",
   "instance": 2008,
   "name": "zone_type",
   "description": "Zone Type",
   "units": "",
   "access": "R",
   "states": "1=Slave; 2=VVT Master; 3=VAV Master"
  },
  {
   "type": "MV",
   "instance": 2009,
   "name": "start_type",
   "description": "Optimal Start Type (default 2)",
   "units": "",
   "access": "W",
   "states": "1=None; 2=Temp Compensated; 3=Learning Adaptive"
  }
 ],
 "page": "https://easybacnet.com/bacnet-points-lists/carrier/vav-zone-ii",
 "note": "Provided as-is. Point availability varies by firmware and options; verify against the live device.",
 "disclaimer": "DISCLAIMER: reference only, provided AS IS with no warranty. May contain errors or be out of date. You must verify every point against the manufacturer's current documentation and the live device before use. easybacnet.com accepts no liability for its use and is not affiliated with the manufacturer. Terms: https://easybacnet.com/terms#content"
}