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Kitchen hood demand ventilation controller (exhaust and make-up air fans) · BACnet points list
Melink Intelli-Hood IH3 System Controller BACnet points list
Updated 12 November 2026
The Intelli-Hood IH3 System Controller is the main BACnet IP device of the older Intelli-Hood 3 kitchen ventilation system and a virtual router for the fan and hood devices behind it. Its own object list is small and read-only: the state of three digital inputs, two dry-contact outputs, two 24 VDC outputs, and the analog input and output as a percentage. It differs from the IH4 System Controller (three inputs here instead of four, and only one analog input and output).
This page lists 9 BACnet objects for the Melink Intelli-Hood IH3 System Controller — 0 of them writable — with each object’s type, instance number, name, engineering units and access. It is re-typed from Melink’s own free documentation, linked below.
- Manufacturer
- Melink
- Model
- Intelli-Hood IH3 System Controller
- Equipment
- Kitchen hood demand ventilation controller (exhaust and make-up air fans)
- Equipment type
- Rooftop units, AHUs & DOAS
- BACnet objects
- 9 (0 writable)
- Transport
- BACnet IP
- Firmware
- Application 2.2, firmware 0.8.4
- Default device instance
- 654000
- Also known as
- Intelli-Hood 3, IH3, IH3 SC, Melink IH3
Reference only, provided as-is: verify against Melink’s current documentation and the live device before use. Not official Melink information. Terms of use.
BMS integration notes: Melink Intelli-Hood IH3 System Controller
Discover the System Controller (default Device ID 654000), then the fan and hood devices through its virtual router. This device only reports the state of its physical I/O; map the outputs set up as Fan On or alarms and the inputs wired for remote on/off or enable.
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 | Digital Input 1 Status | Physical input 1; function set in IH3 config | Read |
| BV 1 | Digital Input 2 Status | Physical input 2; function set in IH3 config | Read |
| BV 2 | Digital Input 3 Status | Physical input 3; function set in IH3 config | Read |
| BV 3 | Digital Output 1 Status | Relay 1; e.g. Fan On or alarm per config | Read |
| BV 4 | Digital Output 2 Status | Relay 2; function set in IH3 config | Read |
| AV 0 | Analog Input Status | Analog input value, 0-100 % | Read |
| AV 1 | Analog Output Status | Analog output to auxiliary airflows, 0-100 % | Read |
Enable & remote start
No BACnet enable or start/stop object on this device. Fans start from the Touchpad, schedules or digital inputs (physical, or the Virtual Input Module over BACnet).
Heartbeat & communication loss
The BACnet Watchdog (0-600 s, default 300 s, 0 = off) on the System Controller resets all Virtual Input Module inputs when no BACnet traffic addressed to the Intelli-Hood arrives in time.
Network setup
- Main BACnet IP device, default Device ID 654000, UDP port 47808; virtual router with default DNET 654 for the other devices.
- With BACnet Auto Number on, the fan and hood devices are numbered sequentially after the System Controller's Device ID.
- Settings are made on the Touchpad (System Configuration, unlocked by holding Up and Down for ten seconds), the web configurator or a USB configuration file.
Watch out for
- The DNET must be unique on the BACnet network, or the virtual devices become unreachable.
- Front ends that do not discover through routers only find the System Controller.
- All objects here are read-only; fans cannot be commanded from this device.
Melink Intelli-Hood IH3 System Controller 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 | |||||
|---|---|---|---|---|---|---|
| BVmin | 0 | Digital Input 1 Status | Physical digital input 1 on the System Controller | Read | Inactive = Open, Active = Closed | |
| BVmin | 1 | Digital Input 2 Status | Physical digital input 2 | Read | Inactive = Open, Active = Closed | |
| BVmin | 2 | Digital Input 3 Status | Physical digital input 3 | Read | Inactive = Open, Active = Closed | |
| BVmin | 3 | Digital Output 1 Status | Dry-contact output 1 | Read | Inactive = De-Energized, Active = Energized | |
| BVmin | 4 | Digital Output 2 Status | Dry-contact output 2 | Read | Inactive = De-Energized, Active = Energized | |
| BV | 5 | 24VDC Out 1 Status | 24 VDC output 1 | Read | Inactive = De-Energized, Active = Energized | |
| BV | 6 | 24VDC Out 2 Status | 24 VDC output 2 | Read | Inactive = De-Energized, Active = Energized | |
| AVmin | 0 | Analog Input Status | Physical analog input value | % | Read | |
| AVmin | 1 | Analog Output Status | Physical analog output value | % | Read |
No points match these filters.
Object ID lookup: Melink Intelli-Hood IH3 System Controller point IDs by name
Integration notes
- All objects are Binary Values or Analog Values and read-only.
- What each input or output does (Remote On/Off, Remote Enable/Disable, Fan On, Temperature Alarm, Smoke, MUA Damper and so on) is set in the Intelli-Hood configuration; the objects only show the contact state.
- The exhaust fan, auxiliary airflow, hood controller and virtual I/O devices of the IH3 have the same object lists as the IH4 versions already in this library.
- Supported BIBBs: DS-RP-B, DS-RPM-B, DS-WP-B, DM-DDB-B, DM-DOB-B; B-ASC profile, no segmentation.
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 Intelli-Hood IH3 System Controller 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 Melink Intelli-Hood IH3 System Controller
How many BACnet points does the Melink Intelli-Hood IH3 System Controller have?
This list has 9 BACnet objects: 2 analog values, 7 binary values. The exact set on a given unit depends on its firmware, installed options and configuration.
Which Melink Intelli-Hood IH3 System Controller BACnet points are writable?
None of the listed objects are marked writable in the source documentation.
Where is the official Melink Intelli-Hood IH3 System Controller BACnet documentation?
The source is Intelli-Hood BACnet Protocol Implementation Conformance Statement (PICS), Version 8.0 (IH-ENG-DTS-BAC-006), revision 2016-11-02, published free by Melink at https://melinkcorp.com/wp-content/uploads/2018/09/IH3_BACnet_PICS.pdf.
What are the minimum BACnet points to integrate the Melink Intelli-Hood IH3 System Controller?
Start with BV 0 Digital Input 1 Status (Physical input 1; function set in IH3 config); BV 1 Digital Input 2 Status (Physical input 2; function set in IH3 config); BV 2 Digital Input 3 Status (Physical input 3; function set in IH3 config); BV 3 Digital Output 1 Status (Relay 1; e.g. Fan On or alarm per config); BV 4 Digital Output 2 Status (Relay 2; function set in IH3 config); AV 0 Analog Input Status (Analog input value, 0-100 %); AV 1 Analog Output Status (Analog output to auxiliary airflows, 0-100 %).
How do I enable BMS control of the Melink Intelli-Hood IH3 System Controller?
No BACnet enable or start/stop object on this device. Fans start from the Touchpad, schedules or digital inputs (physical, or the Virtual Input Module over BACnet).
Does the Melink Intelli-Hood IH3 System Controller need a BACnet heartbeat or have a communication timeout?
The BACnet Watchdog (0-600 s, default 300 s, 0 = off) on the System Controller resets all Virtual Input Module inputs when no BACnet traffic addressed to the Intelli-Hood arrives in time.
How do I check these points on the real Intelli-Hood IH3 System Controller?
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 Melink BACnet points lists
- Kitchen exhaust / make-up air fan VFD device (Intelli-Hood demand ventilation)
Melink Intelli-Hood IH4 Exhaust Fan / Auxiliary Airflow
Each exhaust fan and auxiliary airflow (make-up air fan) VFD run by a Melink Intelli-Hood 4 system.
Also known as: Intelli-Hood, IH4, IH4-SC, Melink IH4, Intelli-Hood 4 - Kitchen hood sensor controller (demand ventilation for exhaust and make-up air fans)
Melink Intelli-Hood IH4 Hood Controller
Each Hood Controller (temperature probes and optic smoke sensor) in a Melink Intelli-Hood 4 system.
Also known as: Intelli-Hood, IH4, IH4-SC, Melink IH4, Intelli-Hood 4 - Kitchen hood demand ventilation controller (exhaust and make-up air fans)
Melink Intelli-Hood IH4 System Controller
The main BACnet device of a Melink Intelli-Hood 4 (IH4-SC) kitchen demand-control ventilation system.
Also known as: Intelli-Hood, IH4, IH4-SC, Melink IH4, Intelli-Hood 4 - Kitchen hood demand ventilation BMS inputs (exhaust and make-up air fans)
Melink Intelli-Hood IH4 Virtual Input Module
Virtual Input Modules of a Melink Intelli-Hood 4 system, which let a BMS drive the system over BACnet.
Also known as: Intelli-Hood, IH4, IH4-SC, Melink IH4, Intelli-Hood 4 - Kitchen hood demand ventilation status outputs (exhaust and make-up air fans)
Melink Intelli-Hood IH4 Virtual Output Module
Virtual Output Modules of a Melink Intelli-Hood 4 system, which give a BMS extra status outputs over BACnet.
Also known as: Intelli-Hood, IH4, IH4-SC, Melink IH4, Intelli-Hood 4
Source: Intelli-Hood BACnet Protocol Implementation Conformance Statement (PICS), Version 8.0 · IH-ENG-DTS-BAC-006 · rev. 2016-11-02. Object names, instances and units are reproduced as published; descriptions are our own.