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Fan coil unit controller (room thermostat) · BACnet points list

Johnson Controls TEC2645-2 Thermostat with Single Proportional Output and One-Speed Fan (BACnet MS/TP) BACnet points list

Updated 7 November 2026

Short answer

The TEC2645-2 is a BACnet MS/TP networked thermostat with a single 0-10 VDC output, a one-speed fan relay and an auxiliary output. Its objects cover room and outdoor temperature (writable from the network), system, fan and occupancy modes, occupied and unoccupied setpoints, PI heating and cooling demand, fan and auxiliary status, input status and alarms, and the installer configuration settings.

This page lists 39 BACnet objects for the Johnson Controls TEC2645-2 Thermostat with Single Proportional Output and One-Speed Fan (BACnet MS/TP) — 28 of them writable — with each object’s type, instance number, name, engineering units and access. It is re-typed from Johnson Controls’s own free documentation, linked below.

Manufacturer
Johnson Controls
Model
TEC2645-2 Thermostat with Single Proportional Output and One-Speed Fan (BACnet MS/TP)
Equipment
Fan coil unit controller (room thermostat)
Equipment type
VAV boxes & fan coils
BACnet objects
39 (28 writable)
Transport
BACnet MS/TP
Firmware
Not stated
Default device instance
73bbb (bbb = MS/TP address 004-127)
Also known as
TEC2645-2, TEC2645, TEC2645-2 networked thermostat
Source document
TEC2645-2, TEC26x6(H)-2, and TEC26x7(VVT)-2 Series Network Thermostat Protocol Implementation Conformance Statement Technical Bulletin · LIT-12011186 · rev. 2007-09-25
Download CSV 39 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 Johnson Controls’s current documentation and the live device before use. Not official Johnson Controls information. Terms of use.

BMS integration notes: Johnson Controls TEC2645-2 Thermostat with Single Proportional Output and One-Speed Fan (BACnet MS/TP)

Integration in brief

Address the thermostat on the BACnet MS/TP trunk, then command System Mode (MV 13), Occupancy (MV 12) and Fan Mode (MV 14) and write the occupied setpoints (AV 49/50). Read Room Temperature (AV 6), the PI demands, Fan Status and the filter and service alarms.

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 13System ModeSystem mode: off, heat, cool or autoWrite
MV 12OccupancyOccupancy command from the BASWrite
MV 14Fan ModeFan mode (one-speed fan)Write
AV 49Occupied Heat SetpointOccupied heating setpointWrite
AV 50Occupied Cool SetpointOccupied cooling setpointWrite
AV 6Room TemperatureRoom temperatureWrite
MV 68Fan StatusFan run statusRead
BI 59Filter AlarmFilter alarmRead
BI 60Service AlarmService alarmRead

Sensors & values from the BMS

Room Temperature (AV 6) and Outdoor Temperature (AV 8) are writable from the network, and Room Temp Override (BV 7) is writable; the PICS does not describe the override sequence.

Network setup

Watch out for

Johnson Controls TEC2645-2 Thermostat with Single Proportional Output and One-Speed Fan (BACnet MS/TP) 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.

39 of 39 shown
Type
Multi-state
Access
Show
Johnson Controls TEC2645-2 Thermostat with Single Proportional Output and One-Speed Fan (BACnet MS/TP) BACnet Points List
DescriptionStates
AVmin6Room TemperatureRoom temperature; writable when the override is setWrite
BV7Room Temp OverrideSet to override room temperature from the networkWrite
AV8Outdoor TemperatureOutdoor temperature written over the networkWrite
BV47AUX OutputAuxiliary output commandWrite
MV39Sequence of OperationHeating/cooling sequence selectionWrite
MVmin13System ModeSystem mode (off, heat, cool, auto)Write
MVmin14Fan ModeFan modeWrite
MVmin12OccupancyOccupancy commandWrite
AV54PI Heating DemandHeating loop demandRead
AV55PI Cooling DemandCooling loop demandRead
AI11Supply TemperatureSupply air temperature sensorRead
BI65AUX StatusAuxiliary output statusRead
MVmin68Fan StatusFan statusRead
BI62BI 1 StatusBinary input 1 statusRead
BI63BI 2 StatusBinary input 2 statusRead
BI64UI 3 StatusUniversal input 3 statusRead
BI58Window AlarmWindow open alarmRead
BImin59Filter AlarmDirty filter alarmRead
BImin60Service AlarmService alarmRead
AVmin49Occupied Heat SetpointOccupied heating setpointWrite
AVmin50Occupied Cool SetpointOccupied cooling setpointWrite
AV51Unoccupied Heat SetpointUnoccupied heating setpointWrite
AV52Unoccupied Cool SetpointUnoccupied cooling setpointWrite
MV40Keypad LockoutKeypad lockout levelWrite
MV16BI 1 ConfigurationFunction of binary input 1Write
MV17BI 2 ConfigurationFunction of binary input 2Write
MV18UI 3 ConfigurationFunction of universal input 3Write
BV19Menu ScrollDisplay scrolling on/offWrite
BV20Auto Mode EnableShow Auto in the mode menuWrite
BV21Temperature ScaleDisplay in °C or °FWrite
MV24AUX ConfigurationAuxiliary output functionWrite
AV27Heating Setpoint LimitHighest heating setpoint allowedWrite
AV28Cooling Setpoint LimitLowest cooling setpoint allowedWrite
BV29Setpoint TypeSetpoint display/adjust typeWrite
MV30Temporary Occupancy TimeTemporary occupancy timeWrite
MV31Door TimeDoor open time before unoccupiedWrite
AV32DeadbandMinimum heat/cool deadbandWrite
BV33Reheat Time BaseReheat output time baseWrite
BV38Direct Reverse ActingDirect or reverse acting outputWrite
Object ID lookup: Johnson Controls TEC2645-2 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 TEC2645-2 Thermostat with Single Proportional Output and One-Speed Fan (BACnet MS/TP) 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 Johnson Controls TEC2645-2 Thermostat with Single Proportional Output and One-Speed Fan (BACnet MS/TP)

How many BACnet points does the Johnson Controls TEC2645-2 Thermostat with Single Proportional Output and One-Speed Fan (BACnet MS/TP) have?

This list has 39 BACnet objects: 1 analog input, 11 analog values, 7 binary inputs, 8 binary values, 12 multi-state values. The exact set on a given unit depends on its firmware, installed options and configuration.

Which Johnson Controls TEC2645-2 Thermostat with Single Proportional Output and One-Speed Fan (BACnet MS/TP) BACnet points are writable?

28 of the 39 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 Johnson Controls TEC2645-2 Thermostat with Single Proportional Output and One-Speed Fan (BACnet MS/TP) BACnet documentation?

The source is TEC2645-2, TEC26x6(H)-2, and TEC26x7(VVT)-2 Series Network Thermostat Protocol Implementation Conformance Statement Technical Bulletin (LIT-12011186), revision 2007-09-25, published free by Johnson Controls at https://docs.johnsoncontrols.com/bas/api/khub/documents/qmqrz7gBk17lLx7ZTuv3zw/content.

What are the minimum BACnet points to integrate the Johnson Controls TEC2645-2 Thermostat with Single Proportional Output and One-Speed Fan (BACnet MS/TP)?

Start with MV 13 System Mode (System mode: off, heat, cool or auto); MV 12 Occupancy (Occupancy command from the BAS); MV 14 Fan Mode (Fan mode (one-speed fan)); AV 49 Occupied Heat Setpoint (Occupied heating setpoint); AV 50 Occupied Cool Setpoint (Occupied cooling setpoint); AV 6 Room Temperature (Room temperature); MV 68 Fan Status (Fan run status); BI 59 Filter Alarm (Filter alarm); BI 60 Service Alarm (Service alarm).

Can the BMS supply sensor values to the Johnson Controls TEC2645-2 Thermostat with Single Proportional Output and One-Speed Fan (BACnet MS/TP)?

Room Temperature (AV 6) and Outdoor Temperature (AV 8) are writable from the network, and Room Temp Override (BV 7) is writable; the PICS does not describe the override sequence.

How do I check these points on the real TEC2645-2 Thermostat with Single Proportional Output and One-Speed Fan (BACnet MS/TP)?

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 Johnson Controls BACnet points lists

Source: TEC2645-2, TEC26x6(H)-2, and TEC26x7(VVT)-2 Series Network Thermostat Protocol Implementation Conformance Statement Technical Bulletin · LIT-12011186 · rev. 2007-09-25. Object names, instances and units are reproduced as published; descriptions are our own.