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VAV terminal unit controller · BACnet points list

Carrier VAV Zone II BACnet points list

Updated 4 November 2026

Short answer

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.

This page lists 64 BACnet objects for the Carrier VAV Zone II — 24 of them writable — with each object’s type, instance number, name, engineering units and access. It is re-typed from Carrier’s own free documentation, linked below.

Manufacturer
Carrier
Model
VAV Zone II
Equipment
VAV terminal unit controller
Equipment type
VAV boxes & fan coils
BACnet objects
64 (24 writable)
Transport
BACnet MS/TP, BACnet ARC156
Firmware
Not stated
Also known as
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
Source document
VAV Zone II Controllers Installation and Start-up Guide (Appendix D: BACnet points list) · 11-808-602-01 · rev. 2026-02-19
Download CSV 64 rows Download EDE B.I.G.-EU JSON Manufacturer PDF ↗ Compare with your scan Download Easy BACnet Mobile App Google Play

Reference only, provided as-is: verify against Carrier’s current documentation and the live device before use. Not official Carrier information. Terms of use.

BMS integration notes: Carrier VAV Zone II

Integration in brief

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 to map

The short list most integrators start with — enough to run the unit from a BMS. Map more as the job needs.

ObjectNameWhyAccess
MV 1001keypad_ovrdeBAS occupancy command: 2 = occupied, 3 = unoccupiedWrite
BV 9001shutdownNetwork shutdown commandWrite
AV 3001occ_cl_stptOccupied cooling setpointWrite
AV 3002occ_ht_stptOccupied heating setpointWrite
MV 2006terminal_statusCurrent zone mode (heating, cooling, vent...)Read
BV 2008occ_statusConfirms occupied/unoccupiedRead
AV 2007space_tempSpace temperature the zone controls toRead
AI 1flow_inputMeasured airflow, CFMRead
AV 1013dpr_posDamper position, %Read
BV 7001spt_failNo valid space temperature; local heat/cool offRead

Enable & remote start

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 & communication loss

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.

Sensors & values from the BMS

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.

Network setup

Watch out for

Carrier VAV Zone II BACnet objects

Type: AI, AO, AV, BI, BO, BV, MI/MO/MV (multi-state) · Access: Read read-only, Write writable, Command writable with a priority array.

64 of 64 shown
Type
Multi-state
Access
Show
Carrier VAV Zone II BACnet Points List
DescriptionStates
AImin1flow_inputFlow InputCFMRead
AV1003oa_tempOutdoor Air Temperature°FRead
AV1006stpt_adjSetpoint Adjustment°FRead
AV1008sa_tempSupply Air Temperature°FRead
AV1009iaqIndoor Air Quality CO2 (ppm)ppmRead
AV1011space_rhSpace Relative Humidity%rhRead
AVmin1013dpr_posDamper Position%Read
AV1017stdby_offsetStandby Offset (default 0)°FWrite
AV1901system_oatSystem Outdoor Air Temperature (default -999)°FWrite
AV1902system_sptSystem Space Temperature (default -999)°FWrite
AV1903system_iaqSystem Space AQ (default -999)ppmWrite
AV1904system_rhSystem Space RH (default -999)%Write
AV1913system_stpt_adjSystem Setpoint Adjustment (default -999)°FWrite
AVmin2007space_tempSpace Temperature - Prime Variable°FRead
AV2015filter_rntmFilter RuntimehrRead
AV2016ovrde_timeOverride Time RemainingminRead
AV2019filter_service_hrsFilter Service Alarm Timer (default 0)hrWrite
AV2030htg_capHeating Capacity%Read
AV2031bas_bd_ht_capBaseboard Heating Capacity%Read
AV2608link_satAir Source Supply Air Temp°FRead
AV2609link_ahu_oatAir Source Outdoor Air Temp°FRead
AV2610link_ahu_staticAir Source Static Pressurein H2ORead
AVmin3001occ_cl_stptOccupied Cooling Setpoint (default 75)°FWrite
AVmin3002occ_ht_stptOccupied Heating Setpoint (default 70)°FWrite
AV3003unocc_cl_stptUnoccupied Cooling Setpoint (default 90)°FWrite
AV3004unocc_ht_stptUnoccupied Heating Setpoint (default 60)°FWrite
AV3005eff_cl_stptEffective Cool Setpoint°FRead
AV3006eff_ht_stptEffective Heat Setpoint°FRead
AV3011occ_dehum_stptOccupied RH Control Setpoint (default 65)%rhWrite
AV9003oat_ht_lockoutHeating Lockout Temperature (default 70)°FWrite
AV9006cool_demand_levelCooling Demand LevelRead
AV9007start_delayPower Fail Restart Delay (default 60)secWrite
AV9015stpt_adj_rangeSetpoint Adjustment Range (default 2)delta °FWrite
AV9024fan_delay_offFan Off Delay (default 120)secWrite
AV9028occ_ovr_delayOcc Override Delay (default 15)minWrite
AV9036heat_demand_levelHeating Demand LevelRead
BI1001occ_switchOccupancy Contact StateRead0=Open; 1=Closed
BV1003sfan_statusFanRead0=Off; 1=On
BV1012ht_enableHeat Enable (default Active (1))Write0=Disable; 1=Enable
BV1013stpt_adj_enableSetpoint Adjustment (default Active (1))Write0=Disable; 1=Enable
BV1029vav_reheatVAV Reheat (default Active (1))Write0=Disable; 1=Enable
BVmin2008occ_statusOccupancy StatusRead0=Unoccupied; 1=Occupied
BV2601a_link_statusAirside Linkage StatusRead0=Not Active; 1=Active
BVmin7001spt_failSpace Temp SensorRead0=Normal; 1=Alarm
BV7004sat_alarmSupply Air TemperatureRead0=Normal; 1=Alarm
BV7005iaq_alarmIndoor Air QualityRead0=Normal; 1=Alarm
BV7011spt_hi_alarmHigh SPTRead0=Normal; 1=Alarm
BV7012spt_lo_alarmLow SPTRead0=Normal; 1=Alarm
BV7017filter_alarmFilterRead0=Clean; 1=Dirty
BV7018sprh_hi_alarmSpace Relative HumidityRead0=Normal; 1=Alarm
BV7029oat_failNetwork OATRead0=Normal; 1=Alarm
BV7030air_linkage_failAirside Linkage StatusRead0=Normal; 1=Alarm
BV7055zs_config_failZS/WS Sensor ConfigurationRead0=Normal; 1=Alarm
BV7064ws_batt_alarmWireless Battery Strength AlarmRead0=Normal; 1=Alarm
BV7065ws_sig_alarmWireless Signal Strength AlarmRead0=Normal; 1=Alarm
BV7517filter_rntm_clrReset Filter Alarm (default Inactive (0))Write0=Off; 1=On
BVmin9001shutdownShutdown (default Active (1))Write0=Inactive; 1=Active
MVmin1001keypad_ovrdeBAS On / Off (default 1)Write1=Inactive; 2=Occupied; 3=Unoccupied
MV2003spt_statusSpace Temp SourceRead1=Sensor Failure; 2=SPT Sensor; 3=T55 / T56; 4=Network; 5=Airside Linkage; 6=Locked Value; 7=ZS Sensor; 8=Wireless Sensor
MV2005link_ahu_modeAir Source ModeRead1=OFF; 2=WARM-UP; 3=HEAT; 4=COOL; 5=FREECOOL; 6=PRESSURIZE; 7=EVACUATE; 8=VENT
MVmin2006terminal_statusTerminal ModeRead1=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
MV2007terminal_typeTerminal TypeRead1=Single Duct; 2=Parallel Fan; 3=Series Fan
MV2008zone_typeZone TypeRead1=Slave; 2=VVT Master; 3=VAV Master
MV2009start_typeOptimal Start Type (default 2)Write1=None; 2=Temp Compensated; 3=Learning Adaptive
Object ID lookup: Carrier VAV Zone II point IDs by name

Integration notes

Check it against the live device. A points list tells you what the controller can expose; the unit in front of you may differ by firmware or installed options. This list is provided as-is for reference only and may contain mistakes — confirming it before you write, map or commission anything is up to you (terms). Easy BACnet scans a network for BACnet IP devices from an Android phone, reads every object on the VAV Zone II and exports what it actually has to Excel — free. New to BACnet? Start with what a BACnet points list is and what the object types mean.

Questions about the Carrier VAV Zone II

How many BACnet points does the Carrier VAV Zone II have?

This list has 64 BACnet objects: 1 analog input, 35 analog values, 1 binary input, 20 binary values, 7 multi-state values. The exact set on a given unit depends on its firmware, installed options and configuration.

Which Carrier VAV Zone II BACnet points are writable?

24 of the 64 objects accept a write. Points marked Command have a priority array: a write holds until it is released, so release it back to automatic when you are done.

Where is the official Carrier VAV Zone II BACnet documentation?

The source is VAV Zone II Controllers Installation and Start-up Guide (Appendix D: BACnet points list) (11-808-602-01), revision 2026-02-19, published free by Carrier at https://www.shareddocs.com/hvac/docs/1000/Public/0E/11-808-602-01.pdf.

What are the minimum BACnet points to integrate the Carrier VAV Zone II?

Start with MV 1001 keypad_ovrde (BAS occupancy command: 2 = occupied, 3 = unoccupied); BV 9001 shutdown (Network shutdown command); AV 3001 occ_cl_stpt (Occupied cooling setpoint); AV 3002 occ_ht_stpt (Occupied heating setpoint); MV 2006 terminal_status (Current zone mode (heating, cooling, vent...)); BV 2008 occ_status (Confirms occupied/unoccupied); AV 2007 space_temp (Space temperature the zone controls to); AI 1 flow_input (Measured airflow, CFM); AV 1013 dpr_pos (Damper position, %); BV 7001 spt_fail (No valid space temperature; local heat/cool off).

How do I enable BMS control of the Carrier VAV Zone II?

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.

Does the Carrier VAV Zone II need a BACnet heartbeat or have a communication timeout?

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.

Can the BMS supply sensor values to the Carrier VAV Zone II?

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.

How do I check these points on the real VAV Zone II?

Scan the network with a BACnet IP browser such as Easy BACnet, open the device and compare its object list with this table. Anything missing is usually an option that isn't installed or a point that is disabled in the controller's configuration.

More Carrier BACnet points lists

Source: VAV Zone II Controllers Installation and Start-up Guide (Appendix D: BACnet points list) · 11-808-602-01 · rev. 2026-02-19. Object names, instances and units are reproduced as published; descriptions are our own.