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Boiler burner management system (LMV52) via ProtoAir gateway · BACnet points list
Thermal Solutions Siemens LMV52 burner management (Universal Gateway ProtoAir) BACnet points list
Updated 7 November 2026
The ProtoAir Universal Gateway reads a Siemens LMV52 burner management system over Modbus and serves it on BACnet IP or BACnet MS/TP. It reports the process value, flame signal, fuel flow, O2, combustion air and flue gas temperatures, efficiency, hours and the current lockout details, and lets the BMS set the control mode, operating mode, external setpoint, firing rate and process setpoint.
This page lists 32 BACnet objects for the Thermal Solutions Siemens LMV52 burner management (Universal Gateway ProtoAir) — 5 of them writable — with each object’s type, instance number, name, engineering units and access. It is re-typed from Thermal Solutions’s own free documentation, linked below.
- Manufacturer
- Thermal Solutions
- Model
- Siemens LMV52 burner management (Universal Gateway ProtoAir)
- Equipment
- Boiler burner management system (LMV52) via ProtoAir gateway
- Equipment type
- Boilers & water heaters
- BACnet objects
- 32 (5 writable)
- Transport
- BACnet IP, BACnet MS/TP
- Firmware
- Not stated
- Also known as
- LMV52, Siemens LMV52, LMV5, ProtoAir FPA-W44, Universal Gateway 106417-04, Bryan Boiler LMV52
Reference only, provided as-is: verify against Thermal Solutions’s current documentation and the live device before use. Not official Thermal Solutions information. Terms of use.
BMS integration notes: Thermal Solutions Siemens LMV52 burner management (Universal Gateway ProtoAir)
Add the LMV52 as a profile in the ProtoAir Web Configurator with a unique Node-ID and discover it at 50000 + Node-ID. Read the process value, firing rate, flame signal and lockout codes; to run it from the BMS use the control mode, operating mode and external setpoint or fuel rate objects.
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 8 | Control Mode | Local or remote (BMS) control | Write |
| AV 9 | Operating Mode | LMV52 operating mode | Write |
| AV 10 | External Setpoint | Setpoint written by the BMS | Write |
| AV 11 | Fuel Rate | Firing rate command in remote mode | Write |
| AI 1 | Process Value | Process value (temperature or pressure) | Read |
| AI 143 | Firing Rate | Current firing rate | Read |
| AI 2 | Flame Signal | Flame signal | Read |
| AI 140 | Lockout Error Code | Lockout error code | Read |
| BI 1 | Com Status | Modbus link between ProtoAir and the LMV52 | Read |
Enable & remote start
BV 8 Control Mode and AV 9 Operating Mode select how the LMV52 takes its demand; the manual does not list their values.
Network setup
- Device instance = Node_Offset (default 50,000) + the controller's Node-ID (1-255), so Node-ID 1 gives 50001.
- ProtoAir default IP address is 192.168.1.24, mask 255.255.255.0.
- Add each controller as a profile in the ProtoAir Web Configurator and give it a unique Node-ID.
- Wiring to the LMV52 follows the instructions supplied with the boiler and control (manual note 2).
Watch out for
- No state texts are printed for Control Mode or Operating Mode; check the Siemens LMV5 Modbus documentation before writing them.
Thermal Solutions Siemens LMV52 burner management (Universal Gateway ProtoAir) 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 | |||||
|---|---|---|---|---|---|---|
| BImin | 1 | Com Status | Modbus link from the ProtoAir to the controller | Read | ||
| AImin | 1 | Process Value | Process value (temperature or pressure) | Read | ||
| AImin | 2 | Flame Signal | Flame signal | Read | ||
| AI | 3 | Fuel Rate Volume | Fuel flow rate | Read | ||
| AI | 4 | O2 Level | Flue gas O2 | Read | ||
| AI | 5 | Supply Air | Combustion air temperature | Read | ||
| AI | 6 | Flue Gas | Flue gas temperature | Read | ||
| AI | 7 | Combustion Efficiency | Combustion efficiency | Read | ||
| BVmin | 8 | Control Mode | Local or remote control | Write | ||
| AVmin | 9 | Operating Mode | Operating mode | Write | ||
| AVmin | 10 | External Setpoint | External (remote) setpoint | Write | ||
| AVmin | 11 | Fuel Rate | Firing rate command in remote mode | Write | ||
| AV | 12 | Process Setpoint | Process setpoint | Write | ||
| AI | 13 | Hours | Operating hours | Read | ||
| AI | 14 | Current Lockout Error code | Current lockout: error code | Read | ||
| AI | 15 | Current Lockout Error diagnosis | Current lockout: error diagnosis | Read | ||
| AI | 16 | Current Lockout Error class | Current lockout: error class | Read | ||
| AI | 17 | Current Lockout Error phase | Current lockout: error phase | Read | ||
| AI | 18 | Current Lockout Fuel | Current lockout: fuel | Read | ||
| AI | 19 | Current Lockout Output | Current lockout: output | Read | ||
| AI | 20 | Current Lockout Date: Year | Current lockout: date: year | Read | ||
| AI | 21 | Current Lockout Date: Month | Current lockout: date: month | Read | ||
| AI | 22 | Current Lockout Date: Day | Current lockout: date: day | Read | ||
| AI | 23 | Current Lockout Time of day: hours | Current lockout: time of day: hours | Read | ||
| AI | 24 | Current Lockout Time of day: minutes | Current lockout: time of day: minutes | Read | ||
| AI | 25 | Current Lockout Time of day: Seconds | Current lockout: time of day: seconds | Read | ||
| AI | 26 | Current Lockout Startup counter total | Current lockout: startup counter total | Read | ||
| AI | 27 | Current Lockout Hours run total | Current lockout: hours run total | Read | ||
| AImin | 140 | Lockout Error Code | Lockout error code | Read | ||
| AI | 141 | Lockout Diagnostic Code | Lockout diagnostic code | Read | ||
| AI | 142 | Fuel Selected | Fuel in use | Read | ||
| AImin | 143 | Firing Rate | Current firing rate | Read |
No points match these filters.
Object ID lookup: Thermal Solutions Siemens LMV52 burner management point IDs by name
BI1Com StatusAI1Process ValueAI2Flame SignalAI3Fuel Rate VolumeAI4O2 LevelAI5Supply AirAI6Flue GasAI7Combustion EfficiencyBV8Control ModeAV9Operating ModeAV10External SetpointAV11Fuel RateAV12Process SetpointAI13HoursAI14Current Lockout Error codeAI15Current Lockout Error diagnosisAI16Current Lockout Error classAI17Current Lockout Error phaseAI18Current Lockout FuelAI19Current Lockout OutputAI20Current Lockout Date: YearAI21Current Lockout Date: MonthAI22Current Lockout Date: DayAI23Current Lockout Time of day: hoursAI24Current Lockout Time of day: minutesAI25Current Lockout Time of day: SecondsAI26Current Lockout Startup counter totalAI27Current Lockout Hours run totalAI140Lockout Error CodeAI141Lockout Diagnostic CodeAI142Fuel SelectedAI143Firing Rate
Integration notes
- The table has no read/write column; AV and BV objects (N2 analog/digital outputs) are taken as writable.
- The manual gives no units, ranges or state texts for this profile; see the Siemens LMV5 documentation.
- AI 140-143 (lockout and diagnostic codes, fuel, firing rate) follow AI 27 with a gap in the numbering, as printed.
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 Siemens LMV52 burner management (Universal Gateway ProtoAir) 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 Thermal Solutions Siemens LMV52 burner management (Universal Gateway ProtoAir)
How many BACnet points does the Thermal Solutions Siemens LMV52 burner management (Universal Gateway ProtoAir) have?
This list has 32 BACnet objects: 26 analog inputs, 4 analog values, 1 binary input, 1 binary value. The exact set on a given unit depends on its firmware, installed options and configuration.
Which Thermal Solutions Siemens LMV52 burner management (Universal Gateway ProtoAir) BACnet points are writable?
5 of the 32 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 Thermal Solutions Siemens LMV52 burner management (Universal Gateway ProtoAir) BACnet documentation?
The source is Universal Gateway Instruction Manual (ProtoAir): BACnet MS/TP, BACnet IP, N2, Modbus (PN 106417-04 Rev A), revision 2024-05, published free by Thermal Solutions at https://s3-us-west-2.amazonaws.com/catsy.782/Universal+Gateway+ProtoAir+BACnet+Instruction+Manual.pdf.
What are the minimum BACnet points to integrate the Thermal Solutions Siemens LMV52 burner management (Universal Gateway ProtoAir)?
Start with BV 8 Control Mode (Local or remote (BMS) control); AV 9 Operating Mode (LMV52 operating mode); AV 10 External Setpoint (Setpoint written by the BMS); AV 11 Fuel Rate (Firing rate command in remote mode); AI 1 Process Value (Process value (temperature or pressure)); AI 143 Firing Rate (Current firing rate); AI 2 Flame Signal (Flame signal); AI 140 Lockout Error Code (Lockout error code); BI 1 Com Status (Modbus link between ProtoAir and the LMV52).
How do I enable BMS control of the Thermal Solutions Siemens LMV52 burner management (Universal Gateway ProtoAir)?
BV 8 Control Mode and AV 9 Operating Mode select how the LMV52 takes its demand; the manual does not list their values.
How do I check these points on the real Siemens LMV52 burner management (Universal Gateway ProtoAir)?
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 Thermal Solutions BACnet points lists
- Boiler control (ALTA / Phantom II) via ProtoAir gateway
Thermal Solutions ALTA / Phantom II boiler control (Universal Gateway ProtoAir)
U.S. Boiler ALTA and ALTAC and Velocity Boiler Works Phantom II and Phantom Combi II boilers, connected to the Universal Gateway (ProtoAir FPA-W44) on the control's Modbus 2 port.
Also known as: ALTA, ALTAC, U.S. Boiler ALTA, Phantom II, Phantom Combi II, Velocity Boiler Works Phantom II, ProtoAir FPA-W44, Universal Gateway 106417-04 - Boiler controller via ProtoNode gateway
Thermal Solutions Apex / Arctic with Concert or Panasonic 4716 software (Universal Gateway)
Thermal Solutions Apex and Arctic boilers with the Concert control and display, and Apex boilers with the Panasonic display running 4716 software, through the Universal Gateway.
Also known as: Concert, Concert control, Apex 4716, Arctic, Arctic 1000, Arctic 1500, Universal Gateway, 106417-01, ProtoNode RER, FPC-N34-0816 - Boiler controller via ProtoNode gateway
Thermal Solutions Apex with Panasonic display, 4109 software (Universal Gateway)
Thermal Solutions Apex boilers with the control and Panasonic GT02 display running 4109 software, connected through the Universal Gateway.
Also known as: Apex, Apex 4109, Panasonic GT02, Universal Gateway, 106417-01, ProtoNode RER, FPC-N34-0816 - Boiler flame safeguard (RM7800) via ProtoNode gateway
Thermal Solutions EVA / EVO boiler - RM7800 flame safeguard (ProtoNode)
Thermal Solutions EVA, EVAW, EVO and EVOW boilers with an RM7800 series burner control, connected through a ProtoNode FPC-N34.
Also known as: RM7800, Honeywell RM7800, 7800 Series, EVA, EVAW, EVO, EVOW, FPC-N34-0643, ProtoNode FPC-N34 - Boiler operating controller (RWF40) via ProtoNode gateway
Thermal Solutions EVA / EVO boiler - RWF40 controller (ProtoNode)
Thermal Solutions EVA, EVAW, EVO and EVOW boilers whose operating control is an RWF40, connected through a ProtoNode FPC-N34.
Also known as: RWF40, Siemens RWF40, EVA, EVAW, EVO, EVOW, FPC-N34-0643, ProtoNode FPC-N34 - Boiler operating controller (RWF55) via ProtoNode gateway
Thermal Solutions EVA / EVO boiler - RWF55 controller (ProtoNode)
Thermal Solutions EVA, EVAW, EVO and EVOW boilers whose operating control is an RWF55, connected through a ProtoNode FPC-N34.
Also known as: RWF55, Siemens RWF55, EVA, EVAW, EVO, EVOW, FPC-N34-0643, ProtoNode FPC-N34 - Boiler flame safeguard (Fireye YB110) via ProtoAir gateway
Thermal Solutions Fireye YB110 flame safeguard (Universal Gateway ProtoAir)
Thermal Solutions and Bryan boilers with a Fireye YB110 flame safeguard, connected to the Universal Gateway (ProtoAir FPA-W44).
Also known as: YB110, Fireye YB110, BurnerPRO, Fireye, ProtoAir FPA-W44, Universal Gateway 106417-04 - Process meter (boiler plant signal) via ProtoAir gateway
Thermal Solutions Precision Digital Trident PD765 meter (Universal Gateway ProtoAir)
A Precision Digital Trident PD765 process meter used in Thermal Solutions and Bryan boiler control systems, connected to the Universal Gateway (ProtoAir FPA-W44).
Also known as: PD765, Trident PD765, Precision Digital PD765, ProtoAir FPA-W44, Universal Gateway 106417-04 - Boiler burner management system (LMV2x/3x) via ProtoAir gateway
Thermal Solutions Siemens LMV2 / LMV3 burner management (Universal Gateway ProtoAir)
Thermal Solutions and Bryan boilers fired by a Siemens LMV2x or LMV3x burner management system, connected to the Universal Gateway (ProtoAir FPA-W44).
Also known as: LMV2_3, LMV2, LMV3, LMV26, LMV37, Siemens LMV2x/3x, ProtoAir FPA-W44, Universal Gateway 106417-04 - Boiler burner management system (LMV36) via ProtoAir gateway
Thermal Solutions Siemens LMV36 burner management (Universal Gateway ProtoAir)
Thermal Solutions and Bryan boilers fired by a Siemens LMV36 burner management system, connected to the Universal Gateway (ProtoAir FPA-W44).
Also known as: LMV36, Siemens LMV36, LMV3, ProtoAir FPA-W44, Universal Gateway 106417-04 - Boiler operating controller (RWF55) via ProtoAir gateway
Thermal Solutions Siemens RWF55 boiler controller (Universal Gateway ProtoAir)
Thermal Solutions and Bryan boilers that use a Siemens RWF55 temperature/pressure controller, connected to the Universal Gateway (ProtoAir FPA-W44).
Also known as: RWF55, Siemens RWF55, ProtoAir FPA-W44, Universal Gateway 106417-04, Bryan Boiler RWF55 - Boiler controller (TSBC) via ProtoNode gateway
Thermal Solutions TSBC boiler control (Universal Gateway)
Thermal Solutions boilers with the TSBC control (such as EVS and EVCA), connected through the Thermal Solutions Universal Gateway.
Also known as: TSBC, Thermal Solutions Boiler Control, Universal Gateway, 106417-01, ProtoNode RER, FPC-N34-0816, EVS, EVCA
Source: Universal Gateway Instruction Manual (ProtoAir): BACnet MS/TP, BACnet IP, N2, Modbus · PN 106417-04 Rev A · rev. 2024-05. Object names, instances and units are reproduced as published; descriptions are our own.