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Electronic mixing valve with thermal disinfection · BACnet points list
Caleffi LEGIOMIXevo 6003 Series Electronic Mixing Valve BACnet points list
Updated 6 November 2026
LEGIOMIXevo is an electronic 3-way mixing valve controller for domestic hot water that holds the mixed outlet temperature and runs scheduled thermal disinfection (anti-legionella) cycles. Over BACnet IP it exposes the mixing, recirculation and storage temperatures, the mixing setpoint, the running function and alarm codes, relay states, feature flags and identification strings.
This page lists 25 BACnet objects for the Caleffi LEGIOMIXevo 6003 Series Electronic Mixing Valve — 1 of them writable — with each object’s type, instance number, name, engineering units and access. It is re-typed from Caleffi’s own free documentation, linked below.
- Manufacturer
- Caleffi
- Model
- LEGIOMIXevo 6003 Series Electronic Mixing Valve
- Equipment
- Electronic mixing valve with thermal disinfection
- Equipment type
- Valves & actuators
- BACnet objects
- 25 (1 writable)
- Transport
- BACnet IP
- Firmware
- 2.0.0 or higher
- Also known as
- LEGIOMIXevo, LEGIOMIX evo, Serie 6003, 6003 Series
Reference only, provided as-is: verify against Caleffi’s current documentation and the live device before use. Not official Caleffi information. Terms of use.
BMS integration notes: Caleffi LEGIOMIXevo 6003 Series Electronic Mixing Valve
Read the mixed water, recirculation and storage temperatures, the running function (AV 10) and alarm code (AV 11). The BMS can change the mixing setpoint (AV 17). Disinfection and other programs run from the valve controller itself.
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 17 | Mixing Temperature Set | Mixed water setpoint | Write |
| AI 14 | Mixing Temperature | Mixed outlet water temperature | Read |
| AI 15 | Recirculation Temperature | Recirculation return temperature | Read |
| AV 10 | State | Running function, e.g. 8 = mixing | Read |
| BV 20 | Relay 1- REC PUMP | Recirculation pump relay closed | Read |
| AV 11 | Alarm Code | Active alarm code; 0 = no error | Read |
| BV 24 | Relay 5 - ALARM | Alarm relay closed on alarm or power loss | Read |
Network setup
- BACnet IP only (Annex J); the data link is set from the touch display.
Watch out for
- Alarm relay BV 24 is also closed when the unit is not powered.
- A disinfection or shock cycle can raise the outlet temperature well above the mixing setpoint.
Caleffi LEGIOMIXevo 6003 Series Electronic Mixing Valve 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 | 14 | Mixing Temperature | Mixing NTC probe temperature | °C/°F | Read | |
| AImin | 15 | Recirculation Temperature | Recirculation NTC probe temperature | °C/°F | Read | |
| AI | 16 | Storage Temperature | Storage NTC probe temperature | °C/°F | Read | |
| AV | 5 | Current Day | Read | |||
| AV | 6 | Current Month | Read | |||
| AV | 7 | Current Year | Read | |||
| AV | 8 | Current Hour | Read | |||
| AV | 9 | Current Minute | Read | |||
| AVmin | 10 | State | Running function code (Annex A) | Read | 0=UNDEFINED, 1=PROGRAM 1, 2=PROGRAM 2, 3=PROGRAM 3, 4=FLUSH, 5=SHOCK, 6=ANTICLOG, 7=STOP_PROGRAM, 8=MIXING, 9=SAFETY VALVE, 88=INIT_ALL, 99=NO_PROGRAM | |
| AVmin | 11 | Alarm Code | Active alarm code (Annex B) | Read | 0=No error, 1=Disinfection error, 4=Flush run error, 5=Shock run error, 10=Mixing probe fault, 11=Mixing probe protection, 20=Recirculation probe fault, 21=Recirculation probe protection, 30=Boiler probe fault, 31=Boiler probe protection, 55=Shock on, 66=Safety Valve, 77=Wrong Settings, 101=Initialization error, 102=OS error, 103=Memory Error, 104=Loading Error, 105=Zeroing error, 106=Anticlog error, 110=Download error, 201=Disinfection fault, 204=Flush error, 205=Shock error, 301=Date and time lost, 401=OTA fault | |
| AVmin | 17 | Mixing Temperature Set | Mixed water setpoint, 40-85 °C (105-185 °F) | °C/°F | Write | |
| BV | 12 | Presence of Recirculation Probe | Recirculation NTC fitted or not | Read | ||
| BV | 13 | Presence of Storage Probe | Storage NTC fitted or not | Read | ||
| BV | 18 | Disinfection Enabled | Disinfection function enabled | Read | ||
| BV | 19 | Anticlog Enabled | Anticlog function enabled | Read | ||
| BVmin | 20 | Relay 1- REC PUMP | Recirculation pump relay | Read | 0=Open, 1=Closed | |
| BV | 21 | Relay 2 - FLUSH | Flush relay | Read | 0=Open, 1=Closed | |
| BV | 22 | Relay 3 - SAFETY VALVE | Safety valve relay | Read | 0=Open, 1=Closed | |
| BV | 23 | Relay 4 - AUX | Auxiliary relay | Read | 0=Open, 1=Closed | |
| BVmin | 24 | Relay 5 - ALARM | Alarm relay; closed on alarm or no power | Read | 0=Open, 1=Closed | |
| CSV | 0 | Serie | Read | |||
| CSV | 1 | Firmware Version | Read | |||
| CSV | 2 | Hardware Version | Read | |||
| CSV | 3 | Product Code | Read | |||
| CSV | 4 | Serial Number | Read |
No points match these filters.
Object ID lookup: Caleffi LEGIOMIXevo 6003 Series Electronic Mixing Valve point IDs by name
AI14Mixing TemperatureAI15Recirculation TemperatureAI16Storage TemperatureAV5Current DayAV6Current MonthAV7Current YearAV8Current HourAV9Current MinuteAV10StateAV11Alarm CodeAV17Mixing Temperature SetBV12Presence of Recirculation ProbeBV13Presence of Storage ProbeBV18Disinfection EnabledBV19Anticlog EnabledBV20Relay 1- REC PUMPBV21Relay 2 - FLUSHBV22Relay 3 - SAFETY VALVEBV23Relay 4 - AUXBV24Relay 5 - ALARMCSV0SerieCSV1Firmware VersionCSV2Hardware VersionCSV3Product CodeCSV4Serial Number
Integration notes
- From sections 5.2-5.5 of the LEGIOMIXevo PICS; state codes for AV 10 and AV 11 come from Annex A and Annex B.
- Only AV 17 Mixing Temperature Set lists Present Value as writable; everything else is read-only.
- Relay BVs: 1 = relay closed, 0 = not closed (written here as Open/Closed). Temperature units follow the Units property (°C, °F).
- The Network Port object (no instance printed) is left out.
- Revision 2 (18/03/2026) removed BACnet MS/TP; the page header still prints Rev. 01.
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 LEGIOMIXevo 6003 Series Electronic Mixing Valve 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 Caleffi LEGIOMIXevo 6003 Series Electronic Mixing Valve
How many BACnet points does the Caleffi LEGIOMIXevo 6003 Series Electronic Mixing Valve have?
This list has 25 BACnet objects: 3 analog inputs, 8 analog values, 9 binary values, 5 characterstring values. The exact set on a given unit depends on its firmware, installed options and configuration.
Which Caleffi LEGIOMIXevo 6003 Series Electronic Mixing Valve BACnet points are writable?
1 of the 25 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 Caleffi LEGIOMIXevo 6003 Series Electronic Mixing Valve BACnet documentation?
The source is LEGIOMIXevo Electronic Mixing Valve with thermal disinfection - BACnet Protocol Implementation Conformance Statement (PICS) (SPD25_010), revision Rev. 2, 18/03/2026, published free by Caleffi at https://www.caleffi.com/sites/default/files/media/external-file/PICS_sdp25_010_rev_02_LEGIOMIXevo.pdf.
What are the minimum BACnet points to integrate the Caleffi LEGIOMIXevo 6003 Series Electronic Mixing Valve?
Start with AV 17 Mixing Temperature Set (Mixed water setpoint); AI 14 Mixing Temperature (Mixed outlet water temperature); AI 15 Recirculation Temperature (Recirculation return temperature); AV 10 State (Running function, e.g. 8 = mixing); BV 20 Relay 1- REC PUMP (Recirculation pump relay closed); AV 11 Alarm Code (Active alarm code; 0 = no error); BV 24 Relay 5 - ALARM (Alarm relay closed on alarm or power loss).
How do I check these points on the real LEGIOMIXevo 6003 Series Electronic Mixing Valve?
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.
Source: LEGIOMIXevo Electronic Mixing Valve with thermal disinfection - BACnet Protocol Implementation Conformance Statement (PICS) · SPD25_010 · rev. Rev. 2, 18/03/2026. Object names, instances and units are reproduced as published; descriptions are our own.