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VAV / zone controller · BACnet points list
AAON VAV/Zone BACnet Controller (VAVZB) BACnet points list
Updated 28 October 2026
The VAVZB is AAON's VAV box and zone damper controller, used on AAON VAV and zoning systems with an AAON unit controller. It has an on-board BACnet MS/TP port next to the AAON communication loop. Over BACnet it exposes 11 analog inputs, 24 setpoint and configuration analog values, 17 binary status and alarm inputs and 3 multi-state status inputs.
This page lists 55 BACnet objects for the AAON VAV/Zone BACnet Controller (VAVZB) — 24 of them writable — with each object’s type, instance number, name, engineering units and access. It is re-typed from AAON’s own free documentation, linked below.
- Manufacturer
- AAON
- Model
- VAV/Zone BACnet Controller (VAVZB)
- Equipment
- VAV / zone controller
- Equipment type
- VAV boxes & fan coils
- BACnet objects
- 55 (24 writable)
- Transport
- BACnet MS/TP
- Firmware
- Not stated
- Also known as
- VAVZB, VAV/Zone Controller, ASM02426, ASM02427, ASM02661, ASM02662, SS1116, SS1146, G067750
BMS integration notes: AAON VAV/Zone BACnet Controller (VAVZB)
Set the MAC address, device ID and MS/TP baud on the controller's LCD Settings screens. The BMS can then read zone temperature, airflow, damper position and alarms and write the occupied heating and cooling setpoints and damper/airflow limits. Occupancy itself still comes from the AAON unit controller or GPC-XP over the AAON communication loop.
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.
| Object | Name | Why | Access |
|---|---|---|---|
| AV 1 | Occupied Cooling Setpoint | Occupied cooling setpoint, 50-90 °F | Write |
| AV 2 | Occupied Heating Setpoint | Occupied heating setpoint, 50-90 °F | Write |
| MI 1 | Scheduled Mode of Operation | Occupancy/operating mode in effect | Read |
| MI 2 | Space Temperature HVAC Mode | No demand, cooling, heating or sensor failure | Read |
| AI 2 | Space Temperature | Zone temperature | Read |
| AI 9 | Pressure Independent Airflow | Measured airflow (pressure-independent boxes) | Read |
| AI 8 | Damper Position | Current damper position | Read |
| AI 7 | Discharge Temperature | Box discharge air temp (if sensor fitted) | Read |
| BI 11 | Bad or Missing Space Sensor | Space sensor failed or missing | Read |
| BI 12 | Bad or Missing Airflow Sensor | Airflow sensor failed or missing | Read |
Enable & remote start
There is no BACnet occupancy or enable point. The VAVZB takes its occupied/unoccupied command from the AAON unit controller or a GPC-XP over the AAON communication loop, and push-button overrides on the room sensor return it to occupied for 0-8 hours (AV 8). Damper force modes (including AV 21 Force Damper to Fixed Position) stay active until cancelled or power is removed.
Network setup
- BACnet MAC address 0-127, default 1; set on the LCD Settings screen.
- Device ID up to 7 digits, set on the LCD (the example screen shows 15000); no default is stated.
- MS/TP baud 9600, 19200, 38400, 57600 or 76800; default 38400.
- The AAON loop address (Unit ID 1-58) is separate from the BACnet MAC address.
Watch out for
- The guide gives no read/write column; test writes to the AVs before relying on them.
- BACnet has no occupancy command; MI 1 state 7 shows when the box has lost communication with the RTU.
- Damper/airflow settings mean % or CFM depending on whether the box is pressure-independent.
AAON VAV/Zone BACnet Controller (VAVZB) 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.
Note: the source document has no read/write column, so access here is inferred from the object type (inputs read-only, values writable). Confirm on the live controller before writing.
| Description | States | |||||
|---|---|---|---|---|---|---|
| AI | 1 | Application Software Version | Software version in the controller | Read | ||
| AImin | 2 | Space Temperature | Zone temperature from the room sensor | °F | Read | |
| AI | 3 | Active Cooling Setpoint | Cooling setpoint in effect | °F | Read | |
| AI | 4 | Active Heating Setpoint | Heating setpoint in effect | °F | Read | |
| AI | 5 | Slide Offset Effect | Setpoint adjustment from the room sensor slide | °F | Read | |
| AI | 6 | Duct Temperature | Supply duct air temperature | °F | Read | |
| AImin | 7 | Discharge Temperature | Box discharge air temperature (if sensor fitted) | °F | Read | |
| AImin | 8 | Damper Position | Damper position | Read | ||
| AImin | 9 | Pressure Independent Airflow | Measured airflow (pressure-independent boxes) | Read | ||
| AI | 10 | Active Heat Stages | Heat stages currently on | Read | ||
| AI | 11 | Modulating Heat Signal | Modulating heat output signal | Read | ||
| AVmin | 1 | Occupied Cooling Setpoint | 50-90 °F | °F | Write | |
| AVmin | 2 | Occupied Heating Setpoint | 50-90 °F | °F | Write | |
| AV | 3 | Unoccupied Cooling Setpoint Offset | 0-30 °F above occupied | °F | Write | |
| AV | 4 | Unoccupied Heating Setpoint Offset | -30-0 °F below occupied | °F | Write | |
| AV | 5 | Cooling Alarm Limit Offset | High space alarm offset, 1-50 °F | °F | Write | |
| AV | 6 | Heating Alarm Limit Offset | Low space alarm offset, -50 to -1 °F | °F | Write | |
| AV | 7 | Maximum Slide Offset Effect | Maximum slide adjustment, 0-5 °F | °F | Write | |
| AV | 8 | Push-Button Override Duration | Override duration, 0-8 h | h | Write | |
| AV | 9 | Heating Setpoints to Call on Main Heat | Heating setpoint that calls the main unit for heat, 50-90 °F | °F | Write | |
| AV | 10 | Auxiliary Heat Setpoint | Box auxiliary heat setpoint, 50-90 °F | °F | Write | |
| AV | 11 | Maximum Damper/Airflow Setting | Maximum damper position or airflow (0-30000) | Write | ||
| AV | 12 | Vent Mode Damper/Airflow Setting | Minimum damper/airflow in vent mode | Write | ||
| AV | 13 | Cooling Mode Damper/Airflow Setting | Minimum damper/airflow in cooling | Write | ||
| AV | 14 | Heating Mode Damper/Airflow Setting | Minimum damper/airflow in heating | Write | ||
| AV | 15 | Unoccupied Damper/Airflow Setting | Damper/airflow in unoccupied mode | Write | ||
| AV | 16 | Parallel Fan On Damper/Airflow Setting | Damper/airflow where the parallel fan starts | Write | ||
| AV | 17 | Damper Force Mode Fixed Position | Fixed damper/airflow used by the force mode | Write | ||
| AV | 18 | Box Heating Min Damper/Airflow Setting | Minimum damper/airflow when the box heats | Write | ||
| AV | 19 | Requires Main Fan Status for Heating | Box heat needs main fan proof (0/1) | Write | ||
| AV | 20 | Force Damper to Fixed Position | Force damper to the fixed position (0/1) | Write | ||
| AV | 21 | Space Sensor Calibration Offset | Space sensor offset, -100 to 100 °F | °F | Write | |
| AV | 22 | Discharge Sensor Calibration Offset | Discharge sensor offset, -100 to 100 °F | °F | Write | |
| AV | 23 | Vacant Room Cooling Mode Offset | Cooling offset when the room is empty, 0-30 °F | °F | Write | |
| AV | 24 | Vacant Room Heating Mode Offset | Heating offset when the room is empty, -30-0 °F | °F | Write | |
| BI | 1 | Box Fan Status | Box fan status | Read | ||
| BI | 2 | Heating Relay #1 | Heat relay 1 status | Read | ||
| BI | 3 | Heating Relay #2 | Heat relay 2 status | Read | ||
| BI | 4 | Main Fan Required | Box is asking for the main unit fan | Read | ||
| BI | 5 | Main Fan Status | Main unit fan status | Read | ||
| BI | 6 | Airflow Too Low for Heating | Airflow too low for box heat | Read | ||
| BI | 7 | Box Allowed to Vote | Box is a voting zone | Read | ||
| BI | 8 | Box Fan Starting Delay Active | Box fan start delay running | Read | ||
| BI | 9 | Auxiliary Heat Relay Status | Auxiliary heat relay status | Read | ||
| BI | 10 | Occupancy Status | Occupied/unoccupied status | Read | ||
| BImin | 11 | Bad or Missing Space Sensor | Space sensor alarm | Read | ||
| BImin | 12 | Bad or Missing Airflow Sensor | Airflow (CFM) sensor alarm | Read | ||
| BI | 13 | Damper Failed to Move Clockwise | Damper opening/closing alarm | Read | ||
| BI | 14 | Damper Failed to Move Counter-Clockwise | Damper opening/closing alarm | Read | ||
| BI | 15 | High Space Temperature Alarm | High space temperature alarm | Read | ||
| BI | 16 | Low Space Temperature Alarm | Low space temperature alarm | Read | ||
| BI | 17 | Damper Feedback Failure | Damper feedback failure alarm | Read | ||
| MImin | 1 | Scheduled Mode of Operation | Current occupancy/operating mode | Read | 1=Unoccupied Mode, 2=Occupied Mode, 3=Override Mode, 4=Calibrating Damper Feedback, 5=Group Override, 6=Open Window Forced Off, 7=Lost Communication with RTU, 8=Occupied Room is Empty | |
| MImin | 2 | Space Temperature HVAC Mode | Space demand mode | Read | 1=No Space Demand, 2=Space Cooling Mode, 3=Space Heating Mode, 4=Sensor Failure Mode | |
| MI | 3 | Type of VAV Box | Configured box type | Read | 1=Cooling Only Box, 2=Heat/Cool Changeover Box, 3=Series Fan Powered Box, 4=Parallel Fan Powered Box |
No points match these filters.
Integration notes
- The guide has no read/write column; AVs are shown as writable (they carry limit ranges) and AI/BI/MI as read-only.
- The BACnet map has no occupancy command or BAS sensor input; occupancy comes over the AAON communication loop from the unit controller or a GPC-XP.
- Units are not printed for the inputs; temperature units here follow the °F limit ranges. Damper/airflow settings (0-30000) are damper % or CFM depending on box type.
- BI 13 and BI 14 are the damper opening and closing alarms; BI 15-17 and BI 11-12 match the alarms listed in the sequence of operation.
- Airflow points only apply to pressure-independent boxes; fan and heat points only with the expansion module.
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. Easy BACnet scans a network for BACnet IP devices from an Android phone, reads every object on the VAV/Zone BACnet Controller (VAVZB) 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 AAON VAV/Zone BACnet Controller (VAVZB)
How many BACnet points does the AAON VAV/Zone BACnet Controller (VAVZB) have?
This list has 55 BACnet objects: 11 analog inputs, 24 analog values, 17 binary inputs, 3 multi-state inputs. The exact set on a given unit depends on its firmware, installed options and configuration.
Which AAON VAV/Zone BACnet Controller (VAVZB) BACnet points are writable?
24 of the 55 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. The source has no read/write column, so this is inferred from object type.
Where is the official AAON VAV/Zone BACnet Controller (VAVZB) BACnet documentation?
The source is VAV/Zone BACnet Controller Package Technical Guide (Appendix B: BACnet MS/TP Parameters) (G067750), revision Rev. C, December 21, 2022, published free by AAON at https://www.aaon.com/hubfs/Controls%20Literature/G067750-VAVZP-BACNET-RevC%20221221.pdf.
What are the minimum BACnet points to integrate the AAON VAV/Zone BACnet Controller (VAVZB)?
Start with AV 1 Occupied Cooling Setpoint (Occupied cooling setpoint, 50-90 °F); AV 2 Occupied Heating Setpoint (Occupied heating setpoint, 50-90 °F); MI 1 Scheduled Mode of Operation (Occupancy/operating mode in effect); MI 2 Space Temperature HVAC Mode (No demand, cooling, heating or sensor failure); AI 2 Space Temperature (Zone temperature); AI 9 Pressure Independent Airflow (Measured airflow (pressure-independent boxes)); AI 8 Damper Position (Current damper position); AI 7 Discharge Temperature (Box discharge air temp (if sensor fitted)); BI 11 Bad or Missing Space Sensor (Space sensor failed or missing); BI 12 Bad or Missing Airflow Sensor (Airflow sensor failed or missing).
How do I enable BMS control of the AAON VAV/Zone BACnet Controller (VAVZB)?
There is no BACnet occupancy or enable point. The VAVZB takes its occupied/unoccupied command from the AAON unit controller or a GPC-XP over the AAON communication loop, and push-button overrides on the room sensor return it to occupied for 0-8 hours (AV 8). Damper force modes (including AV 21 Force Damper to Fixed Position) stay active until cancelled or power is removed.
How do I check these points on the real VAV/Zone BACnet Controller (VAVZB)?
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 AAON BACnet points lists
- Air handler preheat controller
AAON PREHEAT-X Controller
AAON PREHEAT-X controllers that stage and modulate electric (SCR/SSR) preheat on AAON units and air handlers.
Also known as: PREHEAT-X, PREHEATX, Preheat-X, G086640, AAON preheat controller, Orion PREHEAT-X - Rooftop unit / air handler controller
AAON VCB-X Controller
AAON packaged rooftop units, air handlers, DOAS and water-source units controlled by the Orion VCB-X (OE335-26B-VCBX) unit controller.
Also known as: VCBX, VCB-X, Orion VCB-X, OE335-26B-VCBX, V28940, WattMaster VCB-X, AAON VCB-X BACnet - Rooftop unit / air handler controller
AAON VCCX2 Controller
AAON rooftop units, air handlers and DOAS units controlled by the VCCX2 (ASM01698) unit controller.
Also known as: VCC-X2, VCCX, VCC-X, ASM01698, Orion VCCX2, SS1088
Source: VAV/Zone BACnet Controller Package Technical Guide (Appendix B: BACnet MS/TP Parameters) · G067750 · rev. Rev. C, December 21, 2022. Object names, instances and units are reproduced as published; descriptions are our own.