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VRF BACnet gateway (per indoor unit) · BACnet points list
Sinclair SDV5 VRF BACnet Gateway GW-BAC BACnet points list
Updated 4 November 2026
The GW-BAC connects up to four XYE buses (64 indoor and 32 outdoor units per bus, 256 indoor units in total) to BACnet IP. Every indoor unit appears as its own BACnet device with the same small object set: on/off, mode, fan speed, setpoints, locks, room temperature and error code. This file lists that per-indoor-unit object set. Outdoor units appear as separate devices with their own read-only object list.
This page lists 15 BACnet objects for the Sinclair SDV5 VRF BACnet Gateway GW-BAC — 12 of them writable — with each object’s type, instance number, name, engineering units and access. It is re-typed from Sinclair’s own free documentation, linked below.
- Manufacturer
- Sinclair
- Model
- SDV5 VRF BACnet Gateway GW-BAC
- Equipment
- VRF BACnet gateway (per indoor unit)
- Equipment type
- VRF & split air conditioners
- BACnet objects
- 15 (12 writable)
- Transport
- BACnet IP
- Firmware
- Not stated
- Default device instance
- Network number x 10000 + port x 1000 + indoor unit address
- Also known as
- GW-BAC, SDV5 BACnet gateway, Sinclair VRF BACnet gateway
- Source document
- GW-BAC Commercial Air Conditioners SDV5 (user manual)
Instance calculator. This list prints one unit; the other units follow a formula. Sinclair SDV5 VRF BACnet gateway GW-BAC instance calculator →
Reference only, provided as-is: verify against Sinclair’s current documentation and the live device before use. Not official Sinclair information. Terms of use.
BMS integration notes: Sinclair SDV5 VRF BACnet Gateway GW-BAC
Give the gateway an IP address and a unique BACnet network number (2-254) on its web page, restart it, then discover one BACnet device per indoor unit. Map on/off, mode, fan speed and setpoint for each unit, and read room temperature, alarm and error code. All indoor unit devices share the same object instances.
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 |
|---|---|---|---|
| BV 1 | On/Off Setting | Unit on/off (1 = on) | Write |
| MV 1 | Mode Setting | 1 Off, 2 Fan, 3 Cool, 4 Heat, 5 Auto, 6 Dry | Write |
| AV 1 | Temperature Setting | Room setpoint, 17-30 °C | Write |
| MV 2 | Fan Speed Setting | Fan speed 1-7, 8 = auto | Write |
| AI 1 | Room Temperature | Room temperature, °C | Read |
| BI 2 | Alarm Indication | Indoor unit error (1 = error) | Read |
| AI 7 | Malfunction Code | Active error code number, 0 = none | Read |
Enable & remote start
No enable point. Each indoor unit is controllable once the gateway sees it on its XYE bus.
Network setup
- Default IP address is 192.168.1.8; configuration is done from a web browser at that address (user admin).
- Set a BACnet network number of 2-254 that no other gateway or device uses; it takes effect after a restart.
- Indoor unit device instance = network number x 10000 + port x 1000 + indoor address; outdoor unit = network number x 10000 + port x 1000 + 100 + outdoor address.
- To reset the IP address, short 485A to 485B before power-up, then restart.
- The gateway must be on the same network segment as the BMS front end.
Watch out for
- Switching a unit on with BV 1 restores its last mode, fan speed and setpoint; a unit that was off when the gateway started defaults to cool, 24 °C, low fan.
- Fan Speed Setting value 9 only reports fan off; it cannot be written.
- In Auto mode the cooling setpoint (AV 2) must be at or above the heating setpoint (AV 3), or the gateway changes the heating setpoint to match.
- Re-addressing an indoor unit or moving it to another port changes its device instance.
Sinclair SDV5 VRF BACnet Gateway GW-BAC 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.
| Description | States | |||||
|---|---|---|---|---|---|---|
| AImin | 1 | Room Temperature | Room temperature at the indoor unit | °C | Read | |
| AImin | 7 | Malfunction Code | Error code number (0 = no error) | Read | ||
| BImin | 2 | Alarm Indication | Indoor unit error status | Read | 0=No error, 1=Error | |
| BVmin | 1 | On/Off Setting | Indoor unit on/off | Write | 0=Off, 1=On | |
| BV | 4 | Remote Control Lock Setting | Lock the remote control | Write | 0=Unlock, 1=Lock | |
| BV | 5 | Controller Lock Setting | Lock the wired controller | Write | 0=Unlock, 1=Lock | |
| MVmin | 1 | Mode Setting | Operating mode | Write | 1=Off, 2=Fan, 3=Cool, 4=Heat, 5=Auto, 6=Dry | |
| MVmin | 2 | Fan Speed Setting | Fan speed; 9 shows fan off (read only) | Write | 1-7=Fan speed 1-7, 8=Auto, 9=Fan off (status only) | |
| MV | 3 | Mode Limit Setting | Lock out cooling or heating mode | Write | 1=Unlocked, 2=Cooling mode locked, 3=Heating mode locked | |
| MV | 5 | Fan Lock/Unlock Setting | Lock the fan at one speed | Write | 1-7=Lock at speed 1-7, 8=Unlock | |
| AVmin | 1 | Temperature Setting | Room setpoint, 17-30 °C | °C | Write | |
| AV | 2 | Dual Point (Cooling) Setting | Cooling setpoint in Auto mode | °C | Write | |
| AV | 3 | Dual Point (Heating) Setting | Heating setpoint in Auto mode | °C | Write | |
| AV | 4 | Cooling Temperature Limit Setting | Lowest allowed cooling setpoint; 0 = unlocked | °C | Write | |
| AV | 5 | Heating Temperature Limit Setting | Highest allowed heating setpoint; 0 = unlocked | °C | Write |
No points match these filters.
Object ID lookup: Sinclair SDV5 VRF BACnet Gateway GW-BAC point IDs by name
AI1Room TemperatureAI7Malfunction CodeBI2Alarm IndicationBV1On/Off SettingBV4Remote Control Lock SettingBV5Controller Lock SettingMV1Mode SettingMV2Fan Speed SettingMV3Mode Limit SettingMV5Fan Lock/Unlock SettingAV1Temperature SettingAV2Dual Point (Cooling) SettingAV3Dual Point (Heating) SettingAV4Cooling Temperature Limit SettingAV5Heating Temperature Limit Setting
Integration notes
- Each indoor unit is its own BACnet device. Device instance = BACnet network number x 10000 + 485 port number x 1000 + indoor unit address. Ports are numbered 0-3 (0 = the port next to the Ethernet jack); indoor addresses are 0-63.
- Object instances are the same in every indoor unit device; only the device instance changes.
- Outdoor units are separate devices: network number x 10000 + port x 1000 + 100 + outdoor address (0-31). Their objects (mode, on/off and alarm status, ambient temp, compressor frequencies and discharge temps, pressures, error code, fan speeds) are in section 4-2 of the manual and are not listed here.
- Not every indoor model supports every object; cooling-only systems do not support Heat or Auto mode.
- Temperatures are in °C. Malfunction Code numbers map to display codes (1-20 = A0-AU, 21-40 = b0-bU, and so on) in the manual's error code table.
- The manual marks control objects RW; they are listed here as writable (W).
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 SDV5 VRF BACnet Gateway GW-BAC 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 Sinclair SDV5 VRF BACnet Gateway GW-BAC
How many BACnet points does the Sinclair SDV5 VRF BACnet Gateway GW-BAC have?
This list has 15 BACnet objects: 2 analog inputs, 5 analog values, 1 binary input, 3 binary values, 4 multi-state values. The exact set on a given unit depends on its firmware, installed options and configuration.
Which Sinclair SDV5 VRF BACnet Gateway GW-BAC BACnet points are writable?
12 of the 15 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 Sinclair SDV5 VRF BACnet Gateway GW-BAC BACnet documentation?
The source is GW-BAC Commercial Air Conditioners SDV5 (user manual), published free by Sinclair at https://sinclair-solutions.com/files/user-manual-en/sdv5/sinclair-um-gw-bac-en.pdf.
What are the minimum BACnet points to integrate the Sinclair SDV5 VRF BACnet Gateway GW-BAC?
Start with BV 1 On/Off Setting (Unit on/off (1 = on)); MV 1 Mode Setting (1 Off, 2 Fan, 3 Cool, 4 Heat, 5 Auto, 6 Dry); AV 1 Temperature Setting (Room setpoint, 17-30 °C); MV 2 Fan Speed Setting (Fan speed 1-7, 8 = auto); AI 1 Room Temperature (Room temperature, °C); BI 2 Alarm Indication (Indoor unit error (1 = error)); AI 7 Malfunction Code (Active error code number, 0 = none).
How do I enable BMS control of the Sinclair SDV5 VRF BACnet Gateway GW-BAC?
No enable point. Each indoor unit is controllable once the gateway sees it on its XYE bus.
How do I check these points on the real SDV5 VRF BACnet Gateway GW-BAC?
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 Sinclair BACnet points lists
Source: GW-BAC Commercial Air Conditioners SDV5 (user manual). Object names, instances and units are reproduced as published; descriptions are our own.