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Multi-boiler plant controller · BACnet points list
Watts tekmar Smart Boiler Control 294BAC BACnet points list
Updated 7 November 2026
Short answer
The tekmar 294BAC stages and resets up to 16 boilers and handles domestic hot water. It talks BACnet IP or BACnet MS/TP natively and exposes the plant targets and temperatures, pressure, override state, pump run times, per-boiler firing rate, EMS temperature output, run hours and cycles, per-boiler status and availability, and a large set of writable settings: outdoor temperature from the BAS, room and DHW setpoints, reset curve, boiler limits, staging, alerts and service intervals.
This page lists 241 BACnet objects for the Watts tekmar Smart Boiler Control 294BAC — 107 of them writable — with each object’s type, instance number, name, engineering units and access. It is re-typed from Watts’s own free documentation, linked below.
- Manufacturer
- Watts
- Model
- tekmar Smart Boiler Control 294BAC
- Equipment
- Multi-boiler plant controller
- Equipment type
- Boilers & water heaters
- BACnet objects
- 241 (107 writable)
- Transport
- BACnet IP, BACnet MS/TP
- Firmware
- J1308, firmware 1.14.0 or later (PICS)
- Default device instance
- 1
- Also known as
- tekmar 294BAC, 294BAC, tekmar 294, Smart Boiler Control 294, J1308
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Reference only, provided as-is: verify against Watts’s current documentation and the live device before use. Not official Watts information. Terms of use.
BMS integration notes: Watts tekmar Smart Boiler Control 294BAC
Integration in brief
Set BAS Type to BACnet IP or BACnet MS/TP in the 294BAC BAS menu, give it a Device ID, and discover it. Turn central heating on with BV 0, set occupied/unoccupied room and DHW targets, optionally feed the outdoor temperature from the BAS (AV 0 with AV 33 = BAS), and monitor the boiler target and supply temperatures, plant output, boiler statuses and the error code.
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 0 | Central heating | Central heating on/off | Write |
| AV 1 | Room occupied | Occupied room target, 34.7-100.4 °F | Write |
| AV 11 | DHW tank occupied | Occupied DHW tank setpoint, 50-230 °F | Write |
| AV 0 | Outdoor air temperature | Outdoor temperature from the BAS (when AV 33 = BAS) | Write |
| AI 1 | Boiler target temperature | Plant supply target | Read |
| AI 2 | Boiler supply temperature | Plant supply temperature | Read |
| AI 3 | Plant output | Plant output, 0-100 % | Read |
| BI 100 | Boiler 1 status | Boiler 1 firing (1 = on) | Read |
| AI 0 | Error code | Active error code | Read |
Enable & remote start
BV 0 Central heating turns space heating on or off; BV 100 + 10 x (n - 1) makes boiler n available.
Sensors & values from the BMS
Set AV 33 Outdoor sensor to 4 (BAS) and write the outdoor temperature to AV 0. Error 153 flags a BAS outdoor sensor problem; the manual does not give a timeout.
Network setup
- BAS menu: BAS Type None/BACnet MS/TP/BACnet IP (default None). BACnet IP needs Internet Connection Type set to Ethernet.
- Device ID 0-4194302 (default 1); device object name default 'Smart Boiler Control'.
- MS/TP: MAC 0-127 (default 1), baud 9600-115200 (default 19200), Max Masters default 127, Max Info Frames default 1.
- BACnet IP: UDP port default 47808; optional foreign-device registration to a BBMD (TTL default 30 s).
- Reinitialize Device and Device Communication Control password: tekmar1150.
Watch out for
- Most writable objects are configuration settings stored by the control; avoid writing them cyclically.
Watts tekmar Smart Boiler Control 294BAC 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 | 0 | Error code | Active error code (see error list) | Read | ||
| AImin | 1 | Boiler target temperature | Range 50-230 °F | °F | Read | |
| AImin | 2 | Boiler supply temperature | Range 32.0-266.0 °F | °F | Read | |
| AImin | 3 | Plant output | Range 0-100 % | % | Read | |
| AI | 4 | Domestic hot water tank target | Range 32.0-266.0 °F | °F | Read | |
| AI | 5 | Domestic hot water tank temperature | Range 32.0-266.0 °F | °F | Read | |
| AI | 6 | Setpoint target temperature | Range 32.0-266.0 °F | °F | Read | |
| AI | 7 | Central heating target | Range 32.0-266.0 °F | °F | Read | |
| AI | 8 | Room target | Range 32.0-266.0 °F | °F | Read | |
| AI | 9 | Pressure | Range 0.0-150.0 psi | psi | Read | |
| AI | 10 | Indoor | Range 32.0-266.0 °F | °F | Read | |
| AI | 11 | Override | Read | 0=Auto, 1=Hand, 2=Max Heat, 3=Purge, 4=Off, 5=Exercise | ||
| AI | 12 | System pump run time hours | Range 0-999999 | h | Read | |
| AI | 13 | System cycles | Range 0-999999 | Read | ||
| AI | 14 | DHW pump run time hours | Range 0-999999 | h | Read | |
| AI | 15 | DHW cycles | Range 0-999999 | Read | ||
| AI | 100 | Boiler 1 firing rate | Range 0-100 % | % | Read | |
| AI | 101 | Boiler 1 EMS temperature output | Range 50.0-210.2 °F | °F | Read | |
| AI | 102 | Boiler 1 run time hours | Range 0-999999 | h | Read | |
| AI | 103 | Boiler 1 cycles | Range 0-999999 | Read | ||
| AI | 104 | Boiler 1 pump or valve run time hours | Range 0-999999 | h | Read | |
| AI | 110 | Boiler 2 firing rate | Range 0-100 % | % | Read | |
| AI | 111 | Boiler 2 EMS temperature output | Range 50.0-210.2 °F | °F | Read | |
| AI | 112 | Boiler 2 run time hours | Range 0-999999 | h | Read | |
| AI | 113 | Boiler 2 cycles | Range 0-999999 | Read | ||
| AI | 114 | Boiler 2 pump or valve run time hours | Range 0-999999 | h | Read | |
| AI | 120 | Boiler 3 firing rate | Range 0-100 % | % | Read | |
| AI | 121 | Boiler 3 EMS temperature output | Range 50.0-210.2 °F | °F | Read | |
| AI | 122 | Boiler 3 run time hours | Range 0-999999 | h | Read | |
| AI | 123 | Boiler 3 cycles | Range 0-999999 | Read | ||
| AI | 124 | Boiler 3 pump or valve run time hours | Range 0-999999 | h | Read | |
| AI | 130 | Boiler 4 firing rate | Range 0-100 % | % | Read | |
| AI | 131 | Boiler 4 EMS temperature output | Range 50.0-210.2 °F | °F | Read | |
| AI | 132 | Boiler 4 run time hours | Range 0-999999 | h | Read | |
| AI | 133 | Boiler 4 cycles | Range 0-999999 | Read | ||
| AI | 134 | Boiler 4 pump or valve run time hours | Range 0-999999 | h | Read | |
| AI | 140 | Boiler 5 firing rate | Range 0-100 % | % | Read | |
| AI | 141 | Boiler 5 EMS temperature output | Range 50.0-210.2 °F | °F | Read | |
| AI | 142 | Boiler 5 run time hours | Range 0-999999 | h | Read | |
| AI | 143 | Boiler 5 cycles | Range 0-999999 | Read | ||
| AI | 144 | Boiler 5 pump or valve run time hours | Range 0-999999 | h | Read | |
| AI | 150 | Boiler 6 firing rate | Range 0-100 % | % | Read | |
| AI | 151 | Boiler 6 EMS temperature output | Range 50.0-210.2 °F | °F | Read | |
| AI | 152 | Boiler 6 run time hours | Range 0-999999 | h | Read | |
| AI | 153 | Boiler 6 cycles | Range 0-999999 | Read | ||
| AI | 154 | Boiler 6 pump or valve run time hours | Range 0-999999 | h | Read | |
| AI | 160 | Boiler 7 firing rate | Range 0-100 % | % | Read | |
| AI | 161 | Boiler 7 EMS temperature output | Range 50.0-210.2 °F | °F | Read | |
| AI | 162 | Boiler 7 run time hours | Range 0-999999 | h | Read | |
| AI | 163 | Boiler 7 cycles | Range 0-999999 | Read | ||
| AI | 164 | Boiler 7 pump or valve run time hours | Range 0-999999 | h | Read | |
| AI | 170 | Boiler 8 firing rate | Range 0-100 % | % | Read | |
| AI | 171 | Boiler 8 EMS temperature output | Range 50.0-210.2 °F | °F | Read | |
| AI | 172 | Boiler 8 run time hours | Range 0-999999 | h | Read | |
| AI | 173 | Boiler 8 cycles | Range 0-999999 | Read | ||
| AI | 174 | Boiler 8 pump or valve run time hours | Range 0-999999 | h | Read | |
| AI | 180 | Boiler 9 firing rate | Range 0-100 % | % | Read | |
| AI | 181 | Boiler 9 EMS temperature output | Range 50.0-210.2 °F | °F | Read | |
| AI | 182 | Boiler 9 run time hours | Range 0-999999 | h | Read | |
| AI | 183 | Boiler 9 cycles | Range 0-999999 | Read | ||
| AI | 184 | Boiler 9 pump or valve run time hours | Range 0-999999 | h | Read | |
| AI | 190 | Boiler 10 firing rate | Range 0-100 % | % | Read | |
| AI | 191 | Boiler 10 EMS temperature output | Range 50.0-210.2 °F | °F | Read | |
| AI | 192 | Boiler 10 run time hours | Range 0-999999 | h | Read | |
| AI | 193 | Boiler 10 cycles | Range 0-999999 | Read | ||
| AI | 194 | Boiler 10 pump or valve run time hours | Range 0-999999 | h | Read | |
| AI | 200 | Boiler 11 firing rate | Range 0-100 % | % | Read | |
| AI | 201 | Boiler 11 EMS temperature output | Range 50.0-210.2 °F | °F | Read | |
| AI | 202 | Boiler 11 run time hours | Range 0-999999 | h | Read | |
| AI | 203 | Boiler 11 cycles | Range 0-999999 | Read | ||
| AI | 204 | Boiler 11 pump or valve run time hours | Range 0-999999 | h | Read | |
| AI | 210 | Boiler 12 firing rate | Range 0-100 % | % | Read | |
| AI | 211 | Boiler 12 EMS temperature output | Range 50.0-210.2 °F | °F | Read | |
| AI | 212 | Boiler 12 run time hours | Range 0-999999 | h | Read | |
| AI | 213 | Boiler 12 cycles | Range 0-999999 | Read | ||
| AI | 214 | Boiler 12 pump or valve run time hours | Range 0-999999 | h | Read | |
| AI | 220 | Boiler 13 firing rate | Range 0-100 % | % | Read | |
| AI | 221 | Boiler 13 EMS temperature output | Range 50.0-210.2 °F | °F | Read | |
| AI | 222 | Boiler 13 run time hours | Range 0-999999 | h | Read | |
| AI | 223 | Boiler 13 cycles | Range 0-999999 | Read | ||
| AI | 224 | Boiler 13 pump or valve run time hours | Range 0-999999 | h | Read | |
| AI | 230 | Boiler 14 firing rate | Range 0-100 % | % | Read | |
| AI | 231 | Boiler 14 EMS temperature output | Range 50.0-210.2 °F | °F | Read | |
| AI | 232 | Boiler 14 run time hours | Range 0-999999 | h | Read | |
| AI | 233 | Boiler 14 cycles | Range 0-999999 | Read | ||
| AI | 234 | Boiler 14 pump or valve run time hours | Range 0-999999 | h | Read | |
| AI | 240 | Boiler 15 firing rate | Range 0-100 % | % | Read | |
| AI | 241 | Boiler 15 EMS temperature output | Range 50.0-210.2 °F | °F | Read | |
| AI | 242 | Boiler 15 run time hours | Range 0-999999 | h | Read | |
| AI | 243 | Boiler 15 cycles | Range 0-999999 | Read | ||
| AI | 244 | Boiler 15 pump or valve run time hours | Range 0-999999 | h | Read | |
| AI | 250 | Boiler 16 firing rate | Range 0-100 % | % | Read | |
| AI | 251 | Boiler 16 EMS temperature output | Range 50.0-210.2 °F | °F | Read | |
| AI | 252 | Boiler 16 run time hours | Range 0-999999 | h | Read | |
| AI | 253 | Boiler 16 cycles | Range 0-999999 | Read | ||
| AI | 254 | Boiler 16 pump or valve run time hours | Range 0-999999 | h | Read | |
| AVmin | 0 | Outdoor air temperature | Range -85-149 °F | °F | Write | |
| AVmin | 1 | Room occupied | Range 34.7-100.4 °F | °F | Write | |
| AV | 2 | Room unoccupied | Range 34.7-100.4 °F | °F | Write | |
| AV | 3 | Terminal unit | Write | 0=Radiant Floor, 1=Baseboard, 2=Radiator, 3=Fancoil | ||
| AV | 4 | Outdoor design temperature | Range -60-45 °F | °F | Write | |
| AV | 5 | Outdoor start temperature | Range 34.7-100.4 °F | °F | Write | |
| AV | 6 | Boiler start temperature | Range 34.7-100.4 °F | °F | Write | |
| AV | 7 | Boiler design temperature | Range 50-230 °F | °F | Write | |
| AV | 8 | Warm weather shut down occupied | Range 34.7-100.4 °F | °F | Write | |
| AV | 9 | Warm weather shut down unoccupied | Range 34.7-100.4 °F | °F | Write | |
| AV | 10 | DHW Type | Write | 0=System, 1=Side, 2=Dedicated | ||
| AVmin | 11 | DHW tank occupied | Range 50-230 °F | °F | Write | |
| AV | 12 | DHW tank unoccupied | Range 50-230 °F | °F | Write | |
| AV | 13 | DHW tank differential | Range 0.9-42.4 Δ°F | Δ°F | Write | |
| AV | 14 | DHW exchange occupied | Range 50-230 °F | °F | Write | |
| AV | 15 | Indirect DHW priority override | Range 20-240 min | min | Write | |
| AV | 16 | Indirect DHW boiler limiting | Range 1-16 | Write | ||
| AV | 17 | Constant setpoint occupied | Range 50-230 °F | °F | Write | |
| AV | 18 | Boiler minimum | Range 50-230 °F | °F | Write | |
| AV | 19 | Boiler maximum | Range 50-230 °F | °F | Write | |
| AV | 20 | Staging | Write | 0=PID, 1=Proportional | ||
| AV | 21 | PID manual boiler differential | Range 1.8-42.4 Δ°F | Δ°F | Write | |
| AV | 22 | Proportional interstage differential | Range 0.9-10.0 Δ°F | Δ°F | Write | |
| AV | 23 | Proportional interstage manual | Range 0.5-40.0 min | min | Write | |
| AV | 24 | Proportional interstage on delay | Range 0.5-10.0 min | min | Write | |
| AV | 25 | Proportional interstage off delay | Range 0.5-10.0 min | min | Write | |
| AV | 26 | Minimum stage run time | Range 0.5-10.0 min | min | Write | |
| AV | 27 | Minimum stage off time | Range 0.5-10.0 min | min | Write | |
| AV | 28 | Condensing group sequencing | Write | 0=Sequential, 1=Parallel | ||
| AV | 29 | Non-Condensing group sequencing | Write | 0=Sequential, 1=Parallel | ||
| AV | 30 | Feature lead type | Write | 0=First On First Off, 1=First On Last Off | ||
| AV | 31 | Combustion air delay | Range 0-360 s | s | Write | |
| AV | 32 | Variable primary flow | Write | 0=Pump, 1=Valve | ||
| AV | 33 | Outdoor sensor | Write | 0=Control, 1=tN4, 2=Cloud, 3=Wireless, 4=BAS | ||
| AV | 34 | Alert Boiler High temperature | Range 50-230 °F | °F | Write | |
| AV | 35 | Alert Boiler Low temperature | Range 50-230 °F | °F | Write | |
| AV | 36 | Alert High Pressure | Range 0-150 psi | psi | Write | |
| AV | 37 | Alert Low Pressure | Range 0-150 psi | psi | Write | |
| AV | 38 | Alert No Heat | Range 0.5-80 | h | Write | |
| AV | 100 | Alert Boiler 1 hours | Range 1000-15000 | h | Write | |
| AV | 101 | Alert Boiler 1 cycles | Range 1-25000 | Write | ||
| AV | 110 | Alert Boiler 2 hours | Range 1000-15000 | h | Write | |
| AV | 111 | Alert Boiler 2 cycles | Range 1-25000 | Write | ||
| AV | 120 | Alert Boiler 3 hours | Range 1000-15000 | h | Write | |
| AV | 121 | Alert Boiler 3 cycles | Range 1-25000 | Write | ||
| AV | 130 | Alert Boiler 4 hours | Range 1000-15000 | h | Write | |
| AV | 131 | Alert Boiler 4 cycles | Range 1-25000 | Write | ||
| AV | 140 | Alert Boiler 5 hours | Range 1000-15000 | h | Write | |
| AV | 141 | Alert Boiler 5 cycles | Range 1-25000 | Write | ||
| AV | 150 | Alert Boiler 6 hours | Range 1000-15000 | h | Write | |
| AV | 151 | Alert Boiler 6 cycles | Range 1-25000 | Write | ||
| AV | 160 | Alert Boiler 7 hours | Range 1000-15000 | h | Write | |
| AV | 161 | Alert Boiler 7 cycles | Range 1-25000 | Write | ||
| AV | 170 | Alert Boiler 8 hours | Range 1000-15000 | h | Write | |
| AV | 171 | Alert Boiler 8 cycles | Range 1-25000 | Write | ||
| AV | 180 | Alert Boiler 9 hours | Range 1000-15000 | h | Write | |
| AV | 181 | Alert Boiler 9 cycles | Range 1-25000 | Write | ||
| AV | 190 | Alert Boiler 10 hours | Range 1000-15000 | h | Write | |
| AV | 191 | Alert Boiler 10 cycles | Range 1-25000 | Write | ||
| AV | 200 | Alert Boiler 11 hours | Range 1000-15000 | h | Write | |
| AV | 201 | Alert Boiler 11 cycles | Range 1-25000 | Write | ||
| AV | 210 | Alert Boiler 12 hours | Range 1000-15000 | h | Write | |
| AV | 211 | Alert Boiler 12 cycles | Range 1-25000 | Write | ||
| AV | 220 | Alert Boiler 13 hours | Range 1000-15000 | h | Write | |
| AV | 221 | Alert Boiler 13 cycles | Range 1-25000 | Write | ||
| AV | 230 | Alert Boiler 14 hours | Range 1000-15000 | h | Write | |
| AV | 231 | Alert Boiler 14 cycles | Range 1-25000 | Write | ||
| AV | 240 | Alert Boiler 15 hours | Range 1000-15000 | h | Write | |
| AV | 241 | Alert Boiler 15 cycles | Range 1-25000 | Write | ||
| AV | 250 | Alert Boiler 16 hours | Range 1000-15000 | h | Write | |
| AV | 251 | Alert Boiler 16 cycles | Range 1-25000 | Write | ||
| BI | 0 | tekmarNet call status | Read | 0=Off, 1=On | ||
| BI | 1 | System pump status | Read | 0=Off, 1=On | ||
| BI | 2 | DHW pump status | Read | 0=Off, 1=On | ||
| BI | 3 | Combustion air damper status | Read | 0=Off, 1=On | ||
| BI | 4 | Domestic Hot Water Priority | Read | 0=Off, 1=On | ||
| BI | 5 | Warm Weather Shut Down | Read | 0=Off, 1=On | ||
| BImin | 100 | Boiler 1 status | Read | 0=Off, 1=On | ||
| BI | 101 | Boiler 1 pump or valve status | Read | 0=Off, 1=On | ||
| BI | 110 | Boiler 2 status | Read | 0=Off, 1=On | ||
| BI | 111 | Boiler 2 pump or valve status | Read | 0=Off, 1=On | ||
| BI | 120 | Boiler 3 status | Read | 0=Off, 1=On | ||
| BI | 121 | Boiler 3 pump or valve status | Read | 0=Off, 1=On | ||
| BI | 130 | Boiler 4 status | Read | 0=Off, 1=On | ||
| BI | 131 | Boiler 4 pump or valve status | Read | 0=Off, 1=On | ||
| BI | 140 | Boiler 5 status | Read | 0=Off, 1=On | ||
| BI | 141 | Boiler 5 pump or valve status | Read | 0=Off, 1=On | ||
| BI | 150 | Boiler 6 status | Read | 0=Off, 1=On | ||
| BI | 151 | Boiler 6 pump or valve status | Read | 0=Off, 1=On | ||
| BI | 160 | Boiler 7 status | Read | 0=Off, 1=On | ||
| BI | 161 | Boiler 7 pump or valve status | Read | 0=Off, 1=On | ||
| BI | 170 | Boiler 8 status | Read | 0=Off, 1=On | ||
| BI | 171 | Boiler 8 pump or valve status | Read | 0=Off, 1=On | ||
| BI | 180 | Boiler 9 status | Read | 0=Off, 1=On | ||
| BI | 181 | Boiler 9 pump or valve status | Read | 0=Off, 1=On | ||
| BI | 190 | Boiler 10 status | Read | 0=Off, 1=On | ||
| BI | 191 | Boiler 10 pump or valve status | Read | 0=Off, 1=On | ||
| BI | 200 | Boiler 11 status | Read | 0=Off, 1=On | ||
| BI | 201 | Boiler 11 pump or valve status | Read | 0=Off, 1=On | ||
| BI | 210 | Boiler 12 status | Read | 0=Off, 1=On | ||
| BI | 211 | Boiler 12 pump or valve status | Read | 0=Off, 1=On | ||
| BI | 220 | Boiler 13 status | Read | 0=Off, 1=On | ||
| BI | 221 | Boiler 13 pump or valve status | Read | 0=Off, 1=On | ||
| BI | 230 | Boiler 14 status | Read | 0=Off, 1=On | ||
| BI | 231 | Boiler 14 pump or valve status | Read | 0=Off, 1=On | ||
| BI | 240 | Boiler 15 status | Read | 0=Off, 1=On | ||
| BI | 241 | Boiler 15 pump or valve status | Read | 0=Off, 1=On | ||
| BI | 250 | Boiler 16 status | Read | 0=Off, 1=On | ||
| BI | 251 | Boiler 16 pump or valve status | Read | 0=Off, 1=On | ||
| BVmin | 0 | Central heating | Write | 0=Off, 1=On | ||
| BV | 1 | Warm weather shut down | Write | 0=Off, 1=On | ||
| BV | 2 | DHW available | Write | 0=Off, 1=On | ||
| BV | 3 | DHW sensor available | Write | 0=Off, 1=On | ||
| BV | 4 | DHW exchange unoccupied | Write | 0=Off, 1=On | ||
| BV | 5 | Indirect DHW priority | Write | 0=Off, 1=On | ||
| BV | 6 | Indirect DHW system pump | Write | 0=Off, 1=On | ||
| BV | 7 | Constant setpoint | Write | 0=Off, 1=On | ||
| BV | 8 | Constant setpoint unoccupied | Write | 0=Off, 1=On | ||
| BV | 9 | Constant setpoint priority | Write | 0=Off, 1=On | ||
| BV | 10 | Constant setpoint system pump | Write | 0=Off, 1=On | ||
| BV | 11 | Remote setpoint | Write | 0=Off, 1=On | ||
| BV | 12 | Boiler Auto Diff | Write | 0=Off, 1=On | ||
| BV | 13 | Interstage Auto | Write | 0=Off, 1=On | ||
| BV | 14 | Condensing Boiler Rotation | Write | 0=Off, 1=On | ||
| BV | 15 | Non-Condensing Boiler Rotation | Write | 0=Off, 1=On | ||
| BV | 16 | Staging Fixed Lead | Write | 0=Off, 1=On | ||
| BV | 17 | Staging Fixed Last | Write | 0=Off, 1=On | ||
| BV | 18 | Pressure sensor available | Write | 0=Off, 1=On | ||
| BV | 19 | Exercise available | Write | 0=Off, 1=On | ||
| BV | 100 | Boiler 1 available | Write | 0=Off, 1=On | ||
| BV | 110 | Boiler 2 available | Write | 0=Off, 1=On | ||
| BV | 120 | Boiler 3 available | Write | 0=Off, 1=On | ||
| BV | 130 | Boiler 4 available | Write | 0=Off, 1=On | ||
| BV | 140 | Boiler 5 available | Write | 0=Off, 1=On | ||
| BV | 150 | Boiler 6 available | Write | 0=Off, 1=On | ||
| BV | 160 | Boiler 7 available | Write | 0=Off, 1=On | ||
| BV | 170 | Boiler 8 available | Write | 0=Off, 1=On | ||
| BV | 180 | Boiler 9 available | Write | 0=Off, 1=On | ||
| BV | 190 | Boiler 10 available | Write | 0=Off, 1=On | ||
| BV | 200 | Boiler 11 available | Write | 0=Off, 1=On | ||
| BV | 210 | Boiler 12 available | Write | 0=Off, 1=On | ||
| BV | 220 | Boiler 13 available | Write | 0=Off, 1=On | ||
| BV | 230 | Boiler 14 available | Write | 0=Off, 1=On | ||
| BV | 240 | Boiler 15 available | Write | 0=Off, 1=On | ||
| BV | 250 | Boiler 16 available | Write | 0=Off, 1=On |
No points match these filters.
Object ID lookup: Watts tekmar Smart Boiler Control 294BAC point IDs by name
AI0Error codeAI1Boiler target temperatureAI2Boiler supply temperatureAI3Plant outputAI4Domestic hot water tank targetAI5Domestic hot water tank temperatureAI6Setpoint target temperatureAI7Central heating targetAI8Room targetAI9PressureAI10IndoorAI11OverrideAI12System pump run time hoursAI13System cyclesAI14DHW pump run time hoursAI15DHW cyclesAI100Boiler 1 firing rateAI101Boiler 1 EMS temperature outputAI102Boiler 1 run time hoursAI103Boiler 1 cyclesAI104Boiler 1 pump or valve run time hoursAI110Boiler 2 firing rateAI111Boiler 2 EMS temperature outputAI112Boiler 2 run time hoursAI113Boiler 2 cyclesAI114Boiler 2 pump or valve run time hoursAI120Boiler 3 firing rateAI121Boiler 3 EMS temperature outputAI122Boiler 3 run time hoursAI123Boiler 3 cyclesAI124Boiler 3 pump or valve run time hoursAI130Boiler 4 firing rateAI131Boiler 4 EMS temperature outputAI132Boiler 4 run time hoursAI133Boiler 4 cyclesAI134Boiler 4 pump or valve run time hoursAI140Boiler 5 firing rateAI141Boiler 5 EMS temperature outputAI142Boiler 5 run time hoursAI143Boiler 5 cyclesAI144Boiler 5 pump or valve run time hoursAI150Boiler 6 firing rateAI151Boiler 6 EMS temperature outputAI152Boiler 6 run time hoursAI153Boiler 6 cyclesAI154Boiler 6 pump or valve run time hoursAI160Boiler 7 firing rateAI161Boiler 7 EMS temperature outputAI162Boiler 7 run time hoursAI163Boiler 7 cyclesAI164Boiler 7 pump or valve run time hoursAI170Boiler 8 firing rateAI171Boiler 8 EMS temperature outputAI172Boiler 8 run time hoursAI173Boiler 8 cyclesAI174Boiler 8 pump or valve run time hoursAI180Boiler 9 firing rateAI181Boiler 9 EMS temperature outputAI182Boiler 9 run time hoursAI183Boiler 9 cyclesAI184Boiler 9 pump or valve run time hoursAI190Boiler 10 firing rateAI191Boiler 10 EMS temperature outputAI192Boiler 10 run time hoursAI193Boiler 10 cyclesAI194Boiler 10 pump or valve run time hoursAI200Boiler 11 firing rateAI201Boiler 11 EMS temperature outputAI202Boiler 11 run time hoursAI203Boiler 11 cyclesAI204Boiler 11 pump or valve run time hoursAI210Boiler 12 firing rateAI211Boiler 12 EMS temperature outputAI212Boiler 12 run time hoursAI213Boiler 12 cyclesAI214Boiler 12 pump or valve run time hoursAI220Boiler 13 firing rateAI221Boiler 13 EMS temperature outputAI222Boiler 13 run time hoursAI223Boiler 13 cyclesAI224Boiler 13 pump or valve run time hoursAI230Boiler 14 firing rateAI231Boiler 14 EMS temperature outputAI232Boiler 14 run time hoursAI233Boiler 14 cyclesAI234Boiler 14 pump or valve run time hoursAI240Boiler 15 firing rateAI241Boiler 15 EMS temperature outputAI242Boiler 15 run time hoursAI243Boiler 15 cyclesAI244Boiler 15 pump or valve run time hoursAI250Boiler 16 firing rateAI251Boiler 16 EMS temperature outputAI252Boiler 16 run time hoursAI253Boiler 16 cyclesAI254Boiler 16 pump or valve run time hoursAV0Outdoor air temperatureAV1Room occupiedAV2Room unoccupiedAV3Terminal unitAV4Outdoor design temperatureAV5Outdoor start temperatureAV6Boiler start temperatureAV7Boiler design temperatureAV8Warm weather shut down occupiedAV9Warm weather shut down unoccupiedAV10DHW TypeAV11DHW tank occupiedAV12DHW tank unoccupiedAV13DHW tank differentialAV14DHW exchange occupiedAV15Indirect DHW priority overrideAV16Indirect DHW boiler limitingAV17Constant setpoint occupiedAV18Boiler minimumAV19Boiler maximumAV20StagingAV21PID manual boiler differentialAV22Proportional interstage differentialAV23Proportional interstage manualAV24Proportional interstage on delayAV25Proportional interstage off delayAV26Minimum stage run timeAV27Minimum stage off timeAV28Condensing group sequencingAV29Non-Condensing group sequencingAV30Feature lead typeAV31Combustion air delayAV32Variable primary flowAV33Outdoor sensorAV34Alert Boiler High temperatureAV35Alert Boiler Low temperatureAV36Alert High PressureAV37Alert Low PressureAV38Alert No HeatAV100Alert Boiler 1 hoursAV101Alert Boiler 1 cyclesAV110Alert Boiler 2 hoursAV111Alert Boiler 2 cyclesAV120Alert Boiler 3 hoursAV121Alert Boiler 3 cyclesAV130Alert Boiler 4 hoursAV131Alert Boiler 4 cyclesAV140Alert Boiler 5 hoursAV141Alert Boiler 5 cyclesAV150Alert Boiler 6 hoursAV151Alert Boiler 6 cyclesAV160Alert Boiler 7 hoursAV161Alert Boiler 7 cyclesAV170Alert Boiler 8 hoursAV171Alert Boiler 8 cyclesAV180Alert Boiler 9 hoursAV181Alert Boiler 9 cyclesAV190Alert Boiler 10 hoursAV191Alert Boiler 10 cyclesAV200Alert Boiler 11 hoursAV201Alert Boiler 11 cyclesAV210Alert Boiler 12 hoursAV211Alert Boiler 12 cyclesAV220Alert Boiler 13 hoursAV221Alert Boiler 13 cyclesAV230Alert Boiler 14 hoursAV231Alert Boiler 14 cyclesAV240Alert Boiler 15 hoursAV241Alert Boiler 15 cyclesAV250Alert Boiler 16 hoursAV251Alert Boiler 16 cyclesBI0tekmarNet call statusBI1System pump statusBI2DHW pump statusBI3Combustion air damper statusBI4Domestic Hot Water PriorityBI5Warm Weather Shut DownBI100Boiler 1 statusBI101Boiler 1 pump or valve statusBI110Boiler 2 statusBI111Boiler 2 pump or valve statusBI120Boiler 3 statusBI121Boiler 3 pump or valve statusBI130Boiler 4 statusBI131Boiler 4 pump or valve statusBI140Boiler 5 statusBI141Boiler 5 pump or valve statusBI150Boiler 6 statusBI151Boiler 6 pump or valve statusBI160Boiler 7 statusBI161Boiler 7 pump or valve statusBI170Boiler 8 statusBI171Boiler 8 pump or valve statusBI180Boiler 9 statusBI181Boiler 9 pump or valve statusBI190Boiler 10 statusBI191Boiler 10 pump or valve statusBI200Boiler 11 statusBI201Boiler 11 pump or valve statusBI210Boiler 12 statusBI211Boiler 12 pump or valve statusBI220Boiler 13 statusBI221Boiler 13 pump or valve statusBI230Boiler 14 statusBI231Boiler 14 pump or valve statusBI240Boiler 15 statusBI241Boiler 15 pump or valve statusBI250Boiler 16 statusBI251Boiler 16 pump or valve statusBV0Central heatingBV1Warm weather shut downBV2DHW availableBV3DHW sensor availableBV4DHW exchange unoccupiedBV5Indirect DHW priorityBV6Indirect DHW system pumpBV7Constant setpointBV8Constant setpoint unoccupiedBV9Constant setpoint priorityBV10Constant setpoint system pumpBV11Remote setpointBV12Boiler Auto DiffBV13Interstage AutoBV14Condensing Boiler RotationBV15Non-Condensing Boiler RotationBV16Staging Fixed LeadBV17Staging Fixed LastBV18Pressure sensor availableBV19Exercise availableBV100Boiler 1 availableBV110Boiler 2 availableBV120Boiler 3 availableBV130Boiler 4 availableBV140Boiler 5 availableBV150Boiler 6 availableBV160Boiler 7 availableBV170Boiler 8 availableBV180Boiler 9 availableBV190Boiler 10 availableBV200Boiler 11 availableBV210Boiler 12 availableBV220Boiler 13 availableBV230Boiler 14 availableBV240Boiler 15 availableBV250Boiler 16 available
Integration notes
- Native BACnet IP and BACnet MS/TP, vendor ID 585 (tekmar Control Systems), protocol revision 18, device profile B-ASC.
- Each boiler uses a block of ten instances: boiler n's objects sit at 100 + 10 x (n - 1) onward (boiler 1 = 100-104 AI, 100-101 AV/BI, 100 BV; boiler 16 = 250-254). All 16 blocks are printed and listed.
- Wireless (Nexa) sensors add objects that are not listed here: AI 1000 + 100 x (n - 1) temperature, + 1 humidity, + 2 battery, and BI 1000 + 100 x (n - 1) online status, for sensors n = 1-99 (up to AI/BI 10800).
- Most AV and BV objects are installer settings (reset curve, staging, DHW and alert setup) that the control stores; change them deliberately.
- Error codes 1-154 are listed in the manual (sensor faults, tN4 and Modbus boiler loss, boiler errors, alerts, wireless and BACnet network errors).
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 tekmar Smart Boiler Control 294BAC 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 Watts tekmar Smart Boiler Control 294BAC
How many BACnet points does the Watts tekmar Smart Boiler Control 294BAC have?
This list has 241 BACnet objects: 96 analog inputs, 71 analog values, 38 binary inputs, 36 binary values. The exact set on a given unit depends on its firmware, installed options and configuration.
Which Watts tekmar Smart Boiler Control 294BAC BACnet points are writable?
107 of the 241 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 Watts tekmar Smart Boiler Control 294BAC BACnet documentation?
The source is Smart Boiler Control 294BAC - BAS Integration Manual (IS-T-294BAC 2627), revision 2026, published free by Watts at https://www.watts.com/dfsmedia/0533dbba17714b1ab581ab07a4cbb521/674967-source/is-t-294bac-2627.pdf.
What are the minimum BACnet points to integrate the Watts tekmar Smart Boiler Control 294BAC?
Start with BV 0 Central heating (Central heating on/off); AV 1 Room occupied (Occupied room target, 34.7-100.4 °F); AV 11 DHW tank occupied (Occupied DHW tank setpoint, 50-230 °F); AV 0 Outdoor air temperature (Outdoor temperature from the BAS (when AV 33 = BAS)); AI 1 Boiler target temperature (Plant supply target); AI 2 Boiler supply temperature (Plant supply temperature); AI 3 Plant output (Plant output, 0-100 %); BI 100 Boiler 1 status (Boiler 1 firing (1 = on)); AI 0 Error code (Active error code).
How do I enable BMS control of the Watts tekmar Smart Boiler Control 294BAC?
BV 0 Central heating turns space heating on or off; BV 100 + 10 x (n - 1) makes boiler n available.
Can the BMS supply sensor values to the Watts tekmar Smart Boiler Control 294BAC?
Set AV 33 Outdoor sensor to 4 (BAS) and write the outdoor temperature to AV 0. Error 153 flags a BAS outdoor sensor problem; the manual does not give a timeout.
How do I check these points on the real tekmar Smart Boiler Control 294BAC?
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 Watts BACnet points lists
- Digital water mixing station (DHW tempering valve)
Watts IntelliStation 2 digital mixing station
Powers IntelliStation 2 and 2S digital hot-water mixing stations for building domestic hot water systems.
Also known as: Powers IntelliStation 2, IntelliStation 2S, IntelliStation2, 116401 - Snow/ice sensor interface (BAS-run snow melting)
Watts tekmar BACnet Snow/Ice Sensor Interface 681
tekmar (Watts) 681 interface that connects a snow/ice sensor and slab and outdoor sensors to a building automation system for snow melting.
Also known as: tekmar 681, 681, BACnet Snow/Ice Sensor Interface, tekmar snow ice sensor interface, J1297 - Multi-boiler plant controller (boiler staging)
Watts tekmar Boiler Control 284
tekmar Boiler Control 284, which stages and modulates up to four boilers for heating and DHW loads.
Also known as: tekmar 284, Boiler Control 284, 284, tekmar multi-staging 284 - Snow melting controller (boiler-fed slab)
Watts tekmar Snow Melting Control 680
tekmar (Watts) Snow Melting Control 680 for hydronic or electric snow melting slabs, with boiler and mixing outputs.
Also known as: tekmar 680, Snow Melting Control 680, 680, tekmar snow melt 680, J1243F
Source: Smart Boiler Control 294BAC - BAS Integration Manual · IS-T-294BAC 2627 · rev. 2026. Object names, instances and units are reproduced as published; descriptions are our own.