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Boiler gateway (cascaded fire tube boilers) · BACnet points list
Navien NFB-C Fire Tube Boiler - Cascade Main + Sub 1-31 (Modbus/BACnet Gateway) BACnet points list
Updated 11 November 2026
Short answer
With the cascade profile, the Navien Modbus/BACnet gateway presents a whole NFB-C cascade (Main plus Sub 1-31) as one BACnet IP or BACnet MS/TP device. It exposes the cascade commands and setpoints, cascade state, and a block of status, temperature, error and counter points for the Main and each Sub boiler.
This page lists 580 BACnet objects for the Navien NFB-C Fire Tube Boiler - Cascade Main + Sub 1-31 (Modbus/BACnet Gateway) — 21 of them writable — with each object’s type, instance number, name, engineering units and access. It is re-typed from Navien’s own free documentation, linked below.
- Manufacturer
- Navien
- Model
- NFB-C Fire Tube Boiler - Cascade Main + Sub 1-31 (Modbus/BACnet Gateway)
- Equipment
- Boiler gateway (cascaded fire tube boilers)
- Equipment type
- Boilers & water heaters
- BACnet objects
- 580 (21 writable)
- Transport
- BACnet IP, BACnet MS/TP
- Firmware
- Not stated
- Also known as
- NFB-C cascade, NFB-301C, NFB-399C, Navien Modbus/BACnet Gateway, GXXX001932
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Reference only, provided as-is: verify against Navien’s current documentation and the live device before use. Not official Navien information. Terms of use.
BMS integration notes: Navien NFB-C Fire Tube Boiler - Cascade Main + Sub 1-31 (Modbus/BACnet Gateway)
Integration in brief
Command the cascade from the BMS (on/off, space heating, setpoints) and read cascade state plus the Main and Sub boiler status and error points. Map only the Sub blocks that exist on site.
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 1 | Boiler On/Off command | Cascade on/off command | Write |
| BV 1 | SH operation on/off control | Space heating on/off | Write |
| AV 2 | SH supply setpoint setting | Space-heat supply water setpoint | Write |
| AV 4 | DHW setpoint setting | Domestic hot water setpoint | Write |
| AV 5 | Error reset command | Resets boiler errors | Write |
| BI 101 | Cascade system enable state | Cascade system enabled | Read |
| BI 102 | Cascade burning state | Cascade burner firing | Read |
| BI 6 | Main Error state | Main boiler in error | Read |
Enable & remote start
Boiler On/Off command (AV 1) and SH operation on/off control (BV 1) switch the cascade and space heating; DHW operation ON/OFF control (BV 4) does the same for hot water.
Network setup
- Gateway part number GXXX001932 (ports: RS-485 R1 to the boilers, Ethernet, RS-485 R2 for BACnet MS/TP).
- Boiler side: Modbus RTU at 9600 baud, 8 data bits, no parity, 1 stop bit; give each boiler a unique Node-ID (1-255).
- Device instance = Node_Offset + Node-ID; Node_Offset defaults to 50,000, so Node-ID 1 gives 50,001.
- Default gateway IP is 192.168.1.24 (Wi-Fi access point 192.168.50.1); pick the field protocol and the device profile in the Web Configurator.
- Set BACnet Virtual Server Nodes to Yes when more than one device is connected to the gateway.
Watch out for
- The full profile is large (Main + 31 Subs); auto-discovery returns every Sub block whether or not that boiler exists.
- The guide gives no state or value tables; check status and error codes against the boiler manual.
Navien NFB-C Fire Tube Boiler - Cascade Main + Sub 1-31 (Modbus/BACnet Gateway) 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 | |||||
|---|---|---|---|---|---|---|
| AI | 1 | Main Operation Status | Read | |||
| AI | 2 | Main Error code | Read | |||
| AI | 4 | Main Current Heat capacity | Read | |||
| AI | 5 | Main Supply temperature | Read | |||
| AI | 6 | Main Return temperature | Read | |||
| AI | 8 | Main Maximum Heat capacity | Read | |||
| AI | 9 | Main Exhaust temperature | Read | |||
| AI | 10 | Main Total time after installation | Read | |||
| AI | 11 | Main Number of CH operation | Read | |||
| AI | 12 | Main Total time of CH operation | Read | |||
| AI | 13 | Main Current amount of gas | Read | |||
| AI | 14 | Main Total amount of gas | Read | |||
| AI | 101 | Cascade total units | Read | |||
| AI | 102 | Cascade Operating units | Read | |||
| AI | 103 | Cascade On/Off state | Read | |||
| AI | 104 | CC Average Heating capacity | Read | |||
| AI | 105 | CC Maximum Heating capacity | Read | |||
| AI | 106 | Primary total flow | Read | |||
| AI | 107 | Average primary Supply temperature | Read | |||
| AI | 108 | Average primary return temperature | Read | |||
| AI | 109 | System Supply temperature | Read | |||
| AI | 110 | System Return temperature | Read | |||
| AI | 111 | Error occurrence unit number | Read | |||
| AI | 112 | Main Error code | Read | |||
| AI | 1001 | Sub01 Operation Status | Read | |||
| AI | 1002 | Sub01 Main Error code | Read | |||
| AI | 1004 | Sub01 Current Heat capacity | Read | |||
| AI | 1005 | Sub01 Supply temperature | Read | |||
| AI | 1006 | Sub01 Return temperature | Read | |||
| AI | 1008 | Sub01 Maximum Heat capacity | Read | |||
| AI | 1009 | Sub01 Exhaust temperature | Read | |||
| AI | 1010 | Sub01 Total time after installation | Read | |||
| AI | 1011 | Sub01 Number of CH operation | Read | |||
| AI | 1012 | Sub01 Total time of CH operation | Read | |||
| AI | 1013 | Sub01 Current amount of gas | Read | |||
| AI | 1014 | Sub01 Total amount of gas | Read | |||
| AI | 2001 | Sub02 Operation Status | Read | |||
| AI | 2002 | Sub02 Main Error code | Read | |||
| AI | 2004 | Sub02 Current Heat capacity | Read | |||
| AI | 2005 | Sub02 Supply temperature | Read | |||
| AI | 2006 | Sub02 Return temperature | Read | |||
| AI | 2008 | Sub02 Maximum Heat capacity | Read | |||
| AI | 2009 | Sub02 Exhaust temperature | Read | |||
| AI | 2010 | Sub02 Total time after installation | Read | |||
| AI | 2011 | Sub02 Number of CH operation | Read | |||
| AI | 2012 | Sub02 Total time of CH operation | Read | |||
| AI | 2013 | Sub02 Current amount of gas | Read | |||
| AI | 2014 | Sub02 Total amount of gas | Read | |||
| AI | 3001 | Sub03 Operation Status | Read | |||
| AI | 3002 | Sub03 Main Error code | Read | |||
| AI | 3004 | Sub03 Current Heat capacity | Read | |||
| AI | 3005 | Sub03 Supply temperature | Read | |||
| AI | 3006 | Sub03 Return temperature | Read | |||
| AI | 3008 | Sub03 Maximum Heat capacity | Read | |||
| AI | 3009 | Sub03 Exhaust temperature | Read | |||
| AI | 3010 | Sub03 Total time after installation | Read | |||
| AI | 3011 | Sub03 Number of CH operation | Read | |||
| AI | 3012 | Sub03 Total time of CH operation | Read | |||
| AI | 3013 | Sub03 Current amount of gas | Read | |||
| AI | 3014 | Sub03 Total amount of gas | Read | |||
| AI | 4001 | Sub04 Operation Status | Read | |||
| AI | 4002 | Sub04 Main Error code | Read | |||
| AI | 4004 | Sub04 Current Heat capacity | Read | |||
| AI | 4005 | Sub04 Supply temperature | Read | |||
| AI | 4006 | Sub04 Return temperature | Read | |||
| AI | 4008 | Sub04 Maximum Heat capacity | Read | |||
| AI | 4009 | Sub04 Exhaust temperature | Read | |||
| AI | 4010 | Sub04 Total time after installation | Read | |||
| AI | 4011 | Sub04 Number of CH operation | Read | |||
| AI | 4012 | Sub04 Total time of CH operation | Read | |||
| AI | 4013 | Sub04 Current amount of gas | Read | |||
| AI | 4014 | Sub04 Total amount of gas | Read | |||
| AI | 5001 | Sub05 Operation Status | Read | |||
| AI | 5002 | Sub05 Main Error code | Read | |||
| AI | 5004 | Sub05 Current Heat capacity | Read | |||
| AI | 5005 | Sub05 Supply temperature | Read | |||
| AI | 5006 | Sub05 Return temperature | Read | |||
| AI | 5008 | Sub05 Maximum Heat capacity | Read | |||
| AI | 5009 | Sub05 Exhaust temperature | Read | |||
| AI | 5010 | Sub05 Total time after installation | Read | |||
| AI | 5011 | Sub05 Number of CH operation | Read | |||
| AI | 5012 | Sub05 Total time of CH operation | Read | |||
| AI | 5013 | Sub05 Current amount of gas | Read | |||
| AI | 5014 | Sub05 Total amount of gas | Read | |||
| AI | 6001 | Sub06 Operation Status | Read | |||
| AI | 6002 | Sub06 Main Error code | Read | |||
| AI | 6004 | Sub06 Current Heat capacity | Read | |||
| AI | 6005 | Sub06 Supply temperature | Read | |||
| AI | 6006 | Sub06 Return temperature | Read | |||
| AI | 6008 | Sub06 Maximum Heat capacity | Read | |||
| AI | 6009 | Sub06 Exhaust temperature | Read | |||
| AI | 6010 | Sub06 Total time after installation | Read | |||
| AI | 6011 | Sub06 Number of CH operation | Read | |||
| AI | 6012 | Sub06 Total time of CH operation | Read | |||
| AI | 6013 | Sub06 Current amount of gas | Read | |||
| AI | 6014 | Sub06 Total amount of gas | Read | |||
| AI | 7001 | Sub07 Operation Status | Read | |||
| AI | 7002 | Sub07 Main Error code | Read | |||
| AI | 7004 | Sub07 Current Heat capacity | Read | |||
| AI | 7005 | Sub07 Supply temperature | Read | |||
| AI | 7006 | Sub07 Return temperature | Read | |||
| AI | 7008 | Sub07 Maximum Heat capacity | Read | |||
| AI | 7009 | Sub07 Exhaust temperature | Read | |||
| AI | 7010 | Sub07 Total time after installation | Read | |||
| AI | 7011 | Sub07 Number of CH operation | Read | |||
| AI | 7012 | Sub07 Total time of CH operation | Read | |||
| AI | 7013 | Sub07 Current amount of gas | Read | |||
| AI | 7014 | Sub07 Total amount of gas | Read | |||
| AI | 8001 | Sub08 Operation Status | Read | |||
| AI | 8002 | Sub08 Main Error code | Read | |||
| AI | 8004 | Sub08 Current Heat capacity | Read | |||
| AI | 8005 | Sub08 Supply temperature | Read | |||
| AI | 8006 | Sub08 Return temperature | Read | |||
| AI | 8008 | Sub08 Maximum Heat capacity | Read | |||
| AI | 8009 | Sub08 Exhaust temperature | Read | |||
| AI | 8010 | Sub08 Total time after installation | Read | |||
| AI | 8011 | Sub08 Number of CH operation | Read | |||
| AI | 8012 | Sub08 Total time of CH operation | Read | |||
| AI | 8013 | Sub08 Current amount of gas | Read | |||
| AI | 8014 | Sub08 Total amount of gas | Read | |||
| AI | 9001 | Sub09 Operation Status | Read | |||
| AI | 9002 | Sub09 Main Error code | Read | |||
| AI | 9004 | Sub09 Current Heat capacity | Read | |||
| AI | 9005 | Sub09 Supply temperature | Read | |||
| AI | 9006 | Sub09 Return temperature | Read | |||
| AI | 9008 | Sub09 Maximum Heat capacity | Read | |||
| AI | 9009 | Sub09 Exhaust temperature | Read | |||
| AI | 9010 | Sub09 Total time after installation | Read | |||
| AI | 9011 | Sub09 Number of CH operation | Read | |||
| AI | 9012 | Sub09 Total time of CH operation | Read | |||
| AI | 9013 | Sub09 Current amount of gas | Read | |||
| AI | 9014 | Sub09 Total amount of gas | Read | |||
| AI | 10001 | Sub10 Operation Status | Read | |||
| AI | 10002 | Sub10 Main Error code | Read | |||
| AI | 10004 | Sub10 Current Heat capacity | Read | |||
| AI | 10005 | Sub10 Supply temperature | Read | |||
| AI | 10006 | Sub10 Return temperature | Read | |||
| AI | 10008 | Sub10 Maximum Heat capacity | Read | |||
| AI | 10009 | Sub10 Exhaust temperature | Read | |||
| AI | 10010 | Sub10 Total time after installation | Read | |||
| AI | 10011 | Sub10 Number of CH operation | Read | |||
| AI | 10012 | Sub10 Total time of CH operation | Read | |||
| AI | 10013 | Sub10 Current amount of gas | Read | |||
| AI | 10014 | Sub10 Total amount of gas | Read | |||
| AI | 11001 | Sub11 Operation Status | Read | |||
| AI | 11002 | Sub11 Main Error code | Read | |||
| AI | 11004 | Sub11 Current Heat capacity | Read | |||
| AI | 11005 | Sub11 Supply temperature | Read | |||
| AI | 11006 | Sub11 Return temperature | Read | |||
| AI | 11008 | Sub11 Maximum Heat capacity | Read | |||
| AI | 11009 | Sub11 Exhaust temperature | Read | |||
| AI | 11010 | Sub11 Total time after installation | Read | |||
| AI | 11011 | Sub11 Number of CH operation | Read | |||
| AI | 11012 | Sub11 Total time of CH operation | Read | |||
| AI | 11013 | Sub11 Current amount of gas | Read | |||
| AI | 11014 | Sub11 Total amount of gas | Read | |||
| AI | 12001 | Sub12 Operation Status | Read | |||
| AI | 12002 | Sub12 Main Error code | Read | |||
| AI | 12004 | Sub12 Current Heat capacity | Read | |||
| AI | 12005 | Sub12 Supply temperature | Read | |||
| AI | 12006 | Sub12 Return temperature | Read | |||
| AI | 12008 | Sub12 Maximum Heat capacity | Read | |||
| AI | 12009 | Sub12 Exhaust temperature | Read | |||
| AI | 12010 | Sub12 Total time after installation | Read | |||
| AI | 12011 | Sub12 Number of CH operation | Read | |||
| AI | 12012 | Sub12 Total time of CH operation | Read | |||
| AI | 12013 | Sub12 Current amount of gas | Read | |||
| AI | 12014 | Sub12 Total amount of gas | Read | |||
| AI | 13001 | Sub13 Operation Status | Read | |||
| AI | 13002 | Sub13 Main Error code | Read | |||
| AI | 13004 | Sub13 Current Heat capacity | Read | |||
| AI | 13005 | Sub13 Supply temperature | Read | |||
| AI | 13006 | Sub13 Return temperature | Read | |||
| AI | 13008 | Sub13 Maximum Heat capacity | Read | |||
| AI | 13009 | Sub13 Exhaust temperature | Read | |||
| AI | 13010 | Sub13 Total time after installation | Read | |||
| AI | 13011 | Sub13 Number of CH operation | Read | |||
| AI | 13012 | Sub13 Total time of CH operation | Read | |||
| AI | 13013 | Sub13 Current amount of gas | Read | |||
| AI | 13014 | Sub13 Total amount of gas | Read | |||
| AI | 14001 | Sub14 Operation Status | Read | |||
| AI | 14002 | Sub14 Main Error code | Read | |||
| AI | 14004 | Sub14 Current Heat capacity | Read | |||
| AI | 14005 | Sub14 Supply temperature | Read | |||
| AI | 14006 | Sub14 Return temperature | Read | |||
| AI | 14008 | Sub14 Maximum Heat capacity | Read | |||
| AI | 14009 | Sub14 Exhaust temperature | Read | |||
| AI | 14010 | Sub14 Total time after installation | Read | |||
| AI | 14011 | Sub14 Number of CH operation | Read | |||
| AI | 14012 | Sub14 Total time of CH operation | Read | |||
| AI | 14013 | Sub14 Current amount of gas | Read | |||
| AI | 14014 | Sub14 Total amount of gas | Read | |||
| AI | 15001 | Sub15 Operation Status | Read | |||
| AI | 15002 | Sub15 Main Error code | Read | |||
| AI | 15004 | Sub15 Current Heat capacity | Read | |||
| AI | 15005 | Sub15 Supply temperature | Read | |||
| AI | 15006 | Sub15 Return temperature | Read | |||
| AI | 15008 | Sub15 Maximum Heat capacity | Read | |||
| AI | 15009 | Sub15 Exhaust temperature | Read | |||
| AI | 15010 | Sub15 Total time after installation | Read | |||
| AI | 15011 | Sub15 Number of CH operation | Read | |||
| AI | 15012 | Sub15 Total time of CH operation | Read | |||
| AI | 15013 | Sub15 Current amount of gas | Read | |||
| AI | 15014 | Sub15 Total amount of gas | Read | |||
| AI | 16001 | Sub16 Operation Status | Read | |||
| AI | 16002 | Sub16 Main Error code | Read | |||
| AI | 16004 | Sub16 Current Heat capacity | Read | |||
| AI | 16005 | Sub16 Supply temperature | Read | |||
| AI | 16006 | Sub16 Return temperature | Read | |||
| AI | 16008 | Sub16 Maximum Heat capacity | Read | |||
| AI | 16009 | Sub16 Exhaust temperature | Read | |||
| AI | 16010 | Sub16 Total time after installation | Read | |||
| AI | 16011 | Sub16 Number of CH operation | Read | |||
| AI | 16012 | Sub16 Total time of CH operation | Read | |||
| AI | 16013 | Sub16 Current amount of gas | Read | |||
| AI | 16014 | Sub16 Total amount of gas | Read | |||
| AI | 17001 | Sub17 Operation Status | Read | |||
| AI | 17002 | Sub17 Main Error code | Read | |||
| AI | 17004 | Sub17 Current Heat capacity | Read | |||
| AI | 17005 | Sub17 Supply temperature | Read | |||
| AI | 17006 | Sub17 Return temperature | Read | |||
| AI | 17008 | Sub17 Maximum Heat capacity | Read | |||
| AI | 17009 | Sub17 Exhaust temperature | Read | |||
| AI | 17010 | Sub17 Total time after installation | Read | |||
| AI | 17011 | Sub17 Number of CH operation | Read | |||
| AI | 17012 | Sub17 Total time of CH operation | Read | |||
| AI | 17013 | Sub17 Current amount of gas | Read | |||
| AI | 17014 | Sub17 Total amount of gas | Read | |||
| AI | 18001 | Sub18 Operation Status | Read | |||
| AI | 18002 | Sub18 Main Error code | Read | |||
| AI | 18004 | Sub18 Current Heat capacity | Read | |||
| AI | 18005 | Sub18 Supply temperature | Read | |||
| AI | 18006 | Sub18 Return temperature | Read | |||
| AI | 18008 | Sub18 Maximum Heat capacity | Read | |||
| AI | 18009 | Sub18 Exhaust temperature | Read | |||
| AI | 18010 | Sub18 Total time after installation | Read | |||
| AI | 18011 | Sub18 Number of CH operation | Read | |||
| AI | 18012 | Sub18 Total time of CH operation | Read | |||
| AI | 18013 | Sub18 Current amount of gas | Read | |||
| AI | 18014 | Sub18 Total amount of gas | Read | |||
| AI | 19001 | Sub19 Operation Status | Read | |||
| AI | 19002 | Sub19 Main Error code | Read | |||
| AI | 19004 | Sub19 Current Heat capacity | Read | |||
| AI | 19005 | Sub19 Supply temperature | Read | |||
| AI | 19006 | Sub19 Return temperature | Read | |||
| AI | 19008 | Sub19 Maximum Heat capacity | Read | |||
| AI | 19009 | Sub19 Exhaust temperature | Read | |||
| AI | 19010 | Sub19 Total time after installation | Read | |||
| AI | 19011 | Sub19 Number of CH operation | Read | |||
| AI | 19012 | Sub19 Total time of CH operation | Read | |||
| AI | 19013 | Sub19 Current amount of gas | Read | |||
| AI | 19014 | Sub19 Total amount of gas | Read | |||
| AI | 20001 | Sub20 Operation Status | Read | |||
| AI | 20002 | Sub20 Main Error code | Read | |||
| AI | 20004 | Sub20 Current Heat capacity | Read | |||
| AI | 20005 | Sub20 Supply temperature | Read | |||
| AI | 20006 | Sub20 Return temperature | Read | |||
| AI | 20008 | Sub20 Maximum Heat capacity | Read | |||
| AI | 20009 | Sub20 Exhaust temperature | Read | |||
| AI | 20010 | Sub20 Total time after installation | Read | |||
| AI | 20011 | Sub20 Number of CH operation | Read | |||
| AI | 20012 | Sub20 Total time of CH operation | Read | |||
| AI | 20013 | Sub20 Current amount of gas | Read | |||
| AI | 20014 | Sub20 Total amount of gas | Read | |||
| AI | 21001 | Sub21 Operation Status | Read | |||
| AI | 21002 | Sub21 Main Error code | Read | |||
| AI | 21004 | Sub21 Current Heat capacity | Read | |||
| AI | 21005 | Sub21 Supply temperature | Read | |||
| AI | 21006 | Sub21 Return temperature | Read | |||
| AI | 21008 | Sub21 Maximum Heat capacity | Read | |||
| AI | 21009 | Sub21 Exhaust temperature | Read | |||
| AI | 21010 | Sub21 Total time after installation | Read | |||
| AI | 21011 | Sub21 Number of CH operation | Read | |||
| AI | 21012 | Sub21 Total time of CH operation | Read | |||
| AI | 21013 | Sub21 Current amount of gas | Read | |||
| AI | 21014 | Sub21 Total amount of gas | Read | |||
| AI | 22001 | Sub22 Operation Status | Read | |||
| AI | 22002 | Sub22 Main Error code | Read | |||
| AI | 22004 | Sub22 Current Heat capacity | Read | |||
| AI | 22005 | Sub22 Supply temperature | Read | |||
| AI | 22006 | Sub22 Return temperature | Read | |||
| AI | 22008 | Sub22 Maximum Heat capacity | Read | |||
| AI | 22009 | Sub22 Exhaust temperature | Read | |||
| AI | 22010 | Sub22 Total time after installation | Read | |||
| AI | 22011 | Sub22 Number of CH operation | Read | |||
| AI | 22012 | Sub22 Total time of CH operation | Read | |||
| AI | 22013 | Sub22 Current amount of gas | Read | |||
| AI | 22014 | Sub22 Total amount of gas | Read | |||
| AI | 23001 | Sub23 Operation Status | Read | |||
| AI | 23002 | Sub23 Main Error code | Read | |||
| AI | 23004 | Sub23 Current Heat capacity | Read | |||
| AI | 23005 | Sub23 Supply temperature | Read | |||
| AI | 23006 | Sub23 Return temperature | Read | |||
| AI | 23008 | Sub23 Maximum Heat capacity | Read | |||
| AI | 23009 | Sub23 Exhaust temperature | Read | |||
| AI | 23010 | Sub23 Total time after installation | Read | |||
| AI | 23011 | Sub23 Number of CH operation | Read | |||
| AI | 23012 | Sub23 Total time of CH operation | Read | |||
| AI | 23013 | Sub23 Current amount of gas | Read | |||
| AI | 23014 | Sub23 Total amount of gas | Read | |||
| AI | 24001 | Sub24 Operation Status | Read | |||
| AI | 24002 | Sub24 Main Error code | Read | |||
| AI | 24004 | Sub24 Current Heat capacity | Read | |||
| AI | 24005 | Sub24 Supply temperature | Read | |||
| AI | 24006 | Sub24 Return temperature | Read | |||
| AI | 24008 | Sub24 Maximum Heat capacity | Read | |||
| AI | 24009 | Sub24 Exhaust temperature | Read | |||
| AI | 24010 | Sub24 Total time after installation | Read | |||
| AI | 24011 | Sub24 Number of CH operation | Read | |||
| AI | 24012 | Sub24 Total time of CH operation | Read | |||
| AI | 24013 | Sub24 Current amount of gas | Read | |||
| AI | 24014 | Sub24 Total amount of gas | Read | |||
| AI | 25001 | Sub25 Operation Status | Read | |||
| AI | 25002 | Sub25 Main Error code | Read | |||
| AI | 25004 | Sub25 Current Heat capacity | Read | |||
| AI | 25005 | Sub25 Supply temperature | Read | |||
| AI | 25006 | Sub25 Return temperature | Read | |||
| AI | 25008 | Sub25 Maximum Heat capacity | Read | |||
| AI | 25009 | Sub25 Exhaust temperature | Read | |||
| AI | 25010 | Sub25 Total time after installation | Read | |||
| AI | 25011 | Sub25 Number of CH operation | Read | |||
| AI | 25012 | Sub25 Total time of CH operation | Read | |||
| AI | 25013 | Sub25 Current amount of gas | Read | |||
| AI | 25014 | Sub25 Total amount of gas | Read | |||
| AI | 26001 | Sub26 Operation Status | Read | |||
| AI | 26002 | Sub26 Main Error code | Read | |||
| AI | 26004 | Sub26 Current Heat capacity | Read | |||
| AI | 26005 | Sub26 Supply temperature | Read | |||
| AI | 26006 | Sub26 Return temperature | Read | |||
| AI | 26008 | Sub26 Maximum Heat capacity | Read | |||
| AI | 26009 | Sub26 Exhaust temperature | Read | |||
| AI | 26010 | Sub26 Total time after installation | Read | |||
| AI | 26011 | Sub26 Number of CH operation | Read | |||
| AI | 26012 | Sub26 Total time of CH operation | Read | |||
| AI | 26013 | Sub26 Current amount of gas | Read | |||
| AI | 26014 | Sub26 Total amount of gas | Read | |||
| AI | 27001 | Sub27 Operation Status | Read | |||
| AI | 27002 | Sub27 Main Error code | Read | |||
| AI | 27004 | Sub27 Current Heat capacity | Read | |||
| AI | 27005 | Sub27 Supply temperature | Read | |||
| AI | 27006 | Sub27 Return temperature | Read | |||
| AI | 27008 | Sub27 Maximum Heat capacity | Read | |||
| AI | 27009 | Sub27 Exhaust temperature | Read | |||
| AI | 27010 | Sub27 Total time after installation | Read | |||
| AI | 27011 | Sub27 Number of CH operation | Read | |||
| AI | 27012 | Sub27 Total time of CH operation | Read | |||
| AI | 27013 | Sub27 Current amount of gas | Read | |||
| AI | 27014 | Sub27 Total amount of gas | Read | |||
| AI | 28001 | Sub28 Operation Status | Read | |||
| AI | 28002 | Sub28 Main Error code | Read | |||
| AI | 28004 | Sub28 Current Heat capacity | Read | |||
| AI | 28005 | Sub28 Supply temperature | Read | |||
| AI | 28006 | Sub28 Return temperature | Read | |||
| AI | 28008 | Sub28 Maximum Heat capacity | Read | |||
| AI | 28009 | Sub28 Exhaust temperature | Read | |||
| AI | 28010 | Sub28 Total time after installation | Read | |||
| AI | 28011 | Sub28 Number of CH operation | Read | |||
| AI | 28012 | Sub28 Total time of CH operation | Read | |||
| AI | 28013 | Sub28 Current amount of gas | Read | |||
| AI | 28014 | Sub28 Total amount of gas | Read | |||
| AI | 29001 | Sub29 Operation Status | Read | |||
| AI | 29002 | Sub29 Main Error code | Read | |||
| AI | 29004 | Sub29 Current Heat capacity | Read | |||
| AI | 29005 | Sub29 Supply temperature | Read | |||
| AI | 29006 | Sub29 Return temperature | Read | |||
| AI | 29008 | Sub29 Maximum Heat capacity | Read | |||
| AI | 29009 | Sub29 Exhaust temperature | Read | |||
| AI | 29010 | Sub29 Total time after installation | Read | |||
| AI | 29011 | Sub29 Number of CH operation | Read | |||
| AI | 29012 | Sub29 Total time of CH operation | Read | |||
| AI | 29013 | Sub29 Current amount of gas | Read | |||
| AI | 29014 | Sub29 Total amount of gas | Read | |||
| AI | 30001 | Sub30 Operation Status | Read | |||
| AI | 30002 | Sub30 Main Error code | Read | |||
| AI | 30004 | Sub30 Current Heat capacity | Read | |||
| AI | 30005 | Sub30 Supply temperature | Read | |||
| AI | 30006 | Sub30 Return temperature | Read | |||
| AI | 30008 | Sub30 Maximum Heat capacity | Read | |||
| AI | 30009 | Sub30 Exhaust temperature | Read | |||
| AI | 30010 | Sub30 Total time after installation | Read | |||
| AI | 30011 | Sub30 Number of CH operation | Read | |||
| AI | 30012 | Sub30 Total time of CH operation | Read | |||
| AI | 30013 | Sub30 Current amount of gas | Read | |||
| AI | 30014 | Sub30 Total amount of gas | Read | |||
| AI | 31001 | Sub31 Operation Status | Read | |||
| AI | 31002 | Sub31 Main Error code | Read | |||
| AI | 31004 | Sub31 Current Heat capacity | Read | |||
| AI | 31005 | Sub31 Supply temperature | Read | |||
| AI | 31006 | Sub31 Return temperature | Read | |||
| AI | 31008 | Sub31 Maximum Heat capacity | Read | |||
| AI | 31009 | Sub31 Exhaust temperature | Read | |||
| AI | 31010 | Sub31 Total time after installation | Read | |||
| AI | 31011 | Sub31 Number of CH operation | Read | |||
| AI | 31012 | Sub31 Total time of CH operation | Read | |||
| AI | 31013 | Sub31 Current amount of gas | Read | |||
| AI | 31014 | Sub31 Total amount of gas | Read | |||
| AVmin | 1 | Boiler On/Off command | Write | |||
| AVmin | 2 | SH supply setpoint setting | Write | |||
| AV | 3 | SH return setpoint setting | Write | |||
| AVmin | 4 | DHW setpoint setting | Write | |||
| AVmin | 5 | Error reset command | Write | |||
| AV | 7 | Boiler setpoint in DHW operation | Write | |||
| AV | 9 | Outdoor reset curve heatload setting | Write | |||
| AV | 10 | Maximum outdoor temperature setting | Write | |||
| AV | 11 | Minimum outdoor temperature setting | Write | |||
| AV | 12 | WWSD temperature setting | Write | |||
| AV | 13 | WWSD On differential setting | Write | |||
| AV | 14 | Boost interval time setting | Write | |||
| AV | 15 | Cascade Initial op units setting | Write | |||
| AV | 16 | CH supply min temperature setting | Write | |||
| AV | 17 | CH supply max temperature setting | Write | |||
| AV | 18 | CH return min temperature setting | Write | |||
| AV | 19 | CH return max temperature setting | Write | |||
| BI | 1 | Main Burner op state | Read | |||
| BI | 2 | Main Frozen protection mode | Read | |||
| BImin | 6 | Main Error state | Read | |||
| BI | 7 | Main Boiler enable status | Read | |||
| BI | 8 | Main Boiler pump op Status | Read | |||
| BImin | 101 | Cascade system enable state | Read | |||
| BImin | 102 | Cascade burning state | Read | |||
| BI | 103 | Cascade SH operation state | Read | |||
| BI | 1001 | Sub01 Burner op state | Read | |||
| BI | 1002 | Sub01 Frozen protection mode | Read | |||
| BI | 1006 | Sub01 Error state | Read | |||
| BI | 1007 | Sub01 Boiler enable status | Read | |||
| BI | 1008 | Sub01 Boiler pump op Status | Read | |||
| BI | 2001 | Sub02 Burner op state | Read | |||
| BI | 2002 | Sub02 Frozen protection mode | Read | |||
| BI | 2006 | Sub02 Error state | Read | |||
| BI | 2007 | Sub02 Boiler enable status | Read | |||
| BI | 2008 | Sub02 Boiler pump op Status | Read | |||
| BI | 3001 | Sub03 Burner op state | Read | |||
| BI | 3002 | Sub03 Frozen protection mode | Read | |||
| BI | 3006 | Sub03 Error state | Read | |||
| BI | 3007 | Sub03 Boiler enable status | Read | |||
| BI | 3008 | Sub03 Boiler pump op Status | Read | |||
| BI | 4001 | Sub04 Burner op state | Read | |||
| BI | 4002 | Sub04 Frozen protection mode | Read | |||
| BI | 4006 | Sub04 Error state | Read | |||
| BI | 4007 | Sub04 Boiler enable status | Read | |||
| BI | 4008 | Sub04 Boiler pump op Status | Read | |||
| BI | 5001 | Sub05 Burner op state | Read | |||
| BI | 5002 | Sub05 Frozen protection mode | Read | |||
| BI | 5006 | Sub05 Error state | Read | |||
| BI | 5007 | Sub05 Boiler enable status | Read | |||
| BI | 5008 | Sub05 Boiler pump op Status | Read | |||
| BI | 6001 | Sub06 Burner op state | Read | |||
| BI | 6002 | Sub06 Frozen protection mode | Read | |||
| BI | 6006 | Sub06 Error state | Read | |||
| BI | 6007 | Sub06 Boiler enable status | Read | |||
| BI | 6008 | Sub06 Boiler pump op Status | Read | |||
| BI | 7001 | Sub07 Burner op state | Read | |||
| BI | 7002 | Sub07 Frozen protection mode | Read | |||
| BI | 7006 | Sub07 Error state | Read | |||
| BI | 7007 | Sub07 Boiler enable status | Read | |||
| BI | 7008 | Sub07 Boiler pump op Status | Read | |||
| BI | 8001 | Sub08 Burner op state | Read | |||
| BI | 8002 | Sub08 Frozen protection mode | Read | |||
| BI | 8006 | Sub08 Error state | Read | |||
| BI | 8007 | Sub08 Boiler enable status | Read | |||
| BI | 8008 | Sub08 Boiler pump op Status | Read | |||
| BI | 9001 | Sub09 Burner op state | Read | |||
| BI | 9002 | Sub09 Frozen protection mode | Read | |||
| BI | 9006 | Sub09 Error state | Read | |||
| BI | 9007 | Sub09 Boiler enable status | Read | |||
| BI | 9008 | Sub09 Boiler pump op Status | Read | |||
| BI | 10001 | Sub10 Burner op state | Read | |||
| BI | 10002 | Sub10 Frozen protection mode | Read | |||
| BI | 10006 | Sub10 Error state | Read | |||
| BI | 10007 | Sub10 Boiler enable status | Read | |||
| BI | 10008 | Sub10 Boiler pump op Status | Read | |||
| BI | 11001 | Sub11 Burner op state | Read | |||
| BI | 11002 | Sub11 Frozen protection mode | Read | |||
| BI | 11006 | Sub11 Error state | Read | |||
| BI | 11007 | Sub11 Boiler enable status | Read | |||
| BI | 11008 | Sub11 Boiler pump op Status | Read | |||
| BI | 12001 | Sub12 Burner op state | Read | |||
| BI | 12002 | Sub12 Frozen protection mode | Read | |||
| BI | 12006 | Sub12 Error state | Read | |||
| BI | 12007 | Sub12 Boiler enable status | Read | |||
| BI | 12008 | Sub12 Boiler pump op Status | Read | |||
| BI | 13001 | Sub13 Burner op state | Read | |||
| BI | 13002 | Sub13 Frozen protection mode | Read | |||
| BI | 13006 | Sub13 Error state | Read | |||
| BI | 13007 | Sub13 Boiler enable status | Read | |||
| BI | 13008 | Sub13 Boiler pump op Status | Read | |||
| BI | 14001 | Sub14 Burner op state | Read | |||
| BI | 14002 | Sub14 Frozen protection mode | Read | |||
| BI | 14006 | Sub14 Error state | Read | |||
| BI | 14007 | Sub14 Boiler enable status | Read | |||
| BI | 14008 | Sub14 Boiler pump op Status | Read | |||
| BI | 15001 | Sub15 Burner op state | Read | |||
| BI | 15002 | Sub15 Frozen protection mode | Read | |||
| BI | 15006 | Sub15 Error state | Read | |||
| BI | 15007 | Sub15 Boiler enable status | Read | |||
| BI | 15008 | Sub15 Boiler pump op Status | Read | |||
| BI | 16001 | Sub16 Burner op state | Read | |||
| BI | 16002 | Sub16 Frozen protection mode | Read | |||
| BI | 16006 | Sub16 Error state | Read | |||
| BI | 16007 | Sub16 Boiler enable status | Read | |||
| BI | 16008 | Sub16 Boiler pump op Status | Read | |||
| BI | 17001 | Sub17 Burner op state | Read | |||
| BI | 17002 | Sub17 Frozen protection mode | Read | |||
| BI | 17006 | Sub17 Error state | Read | |||
| BI | 17007 | Sub17 Boiler enable status | Read | |||
| BI | 17008 | Sub17 Boiler pump op Status | Read | |||
| BI | 18001 | Sub18 Burner op state | Read | |||
| BI | 18002 | Sub18 Frozen protection mode | Read | |||
| BI | 18006 | Sub18 Error state | Read | |||
| BI | 18007 | Sub18 Boiler enable status | Read | |||
| BI | 18008 | Sub18 Boiler pump op Status | Read | |||
| BI | 19001 | Sub19 Burner op state | Read | |||
| BI | 19002 | Sub19 Frozen protection mode | Read | |||
| BI | 19006 | Sub19 Error state | Read | |||
| BI | 19007 | Sub19 Boiler enable status | Read | |||
| BI | 19008 | Sub19 Boiler pump op Status | Read | |||
| BI | 20001 | Sub20 Burner op state | Read | |||
| BI | 20002 | Sub20 Frozen protection mode | Read | |||
| BI | 20006 | Sub20 Error state | Read | |||
| BI | 20007 | Sub20 Boiler enable status | Read | |||
| BI | 20008 | Sub20 Boiler pump op Status | Read | |||
| BI | 21001 | Sub21 Burner op state | Read | |||
| BI | 21002 | Sub21 Frozen protection mode | Read | |||
| BI | 21006 | Sub21 Error state | Read | |||
| BI | 21007 | Sub21 Boiler enable status | Read | |||
| BI | 21008 | Sub21 Boiler pump op Status | Read | |||
| BI | 22001 | Sub22 Burner op state | Read | |||
| BI | 22002 | Sub22 Frozen protection mode | Read | |||
| BI | 22006 | Sub22 Error state | Read | |||
| BI | 22007 | Sub22 Boiler enable status | Read | |||
| BI | 22008 | Sub22 Boiler pump op Status | Read | |||
| BI | 23001 | Sub23 Burner op state | Read | |||
| BI | 23002 | Sub23 Frozen protection mode | Read | |||
| BI | 23006 | Sub23 Error state | Read | |||
| BI | 23007 | Sub23 Boiler enable status | Read | |||
| BI | 23008 | Sub23 Boiler pump op Status | Read | |||
| BI | 24001 | Sub24 Burner op state | Read | |||
| BI | 24002 | Sub24 Frozen protection mode | Read | |||
| BI | 24006 | Sub24 Error state | Read | |||
| BI | 24007 | Sub24 Boiler enable status | Read | |||
| BI | 24008 | Sub24 Boiler pump op Status | Read | |||
| BI | 25001 | Sub25 Burner op state | Read | |||
| BI | 25002 | Sub25 Frozen protection mode | Read | |||
| BI | 25006 | Sub25 Error state | Read | |||
| BI | 25007 | Sub25 Boiler enable status | Read | |||
| BI | 25008 | Sub25 Boiler pump op Status | Read | |||
| BI | 26001 | Sub26 Burner op state | Read | |||
| BI | 26002 | Sub26 Frozen protection mode | Read | |||
| BI | 26006 | Sub26 Error state | Read | |||
| BI | 26007 | Sub26 Boiler enable status | Read | |||
| BI | 26008 | Sub26 Boiler pump op Status | Read | |||
| BI | 27001 | Sub27 Burner op state | Read | |||
| BI | 27002 | Sub27 Frozen protection mode | Read | |||
| BI | 27006 | Sub27 Error state | Read | |||
| BI | 27007 | Sub27 Boiler enable status | Read | |||
| BI | 27008 | Sub27 Boiler pump op Status | Read | |||
| BI | 28001 | Sub28 Burner op state | Read | |||
| BI | 28002 | Sub28 Frozen protection mode | Read | |||
| BI | 28006 | Sub28 Error state | Read | |||
| BI | 28007 | Sub28 Boiler enable status | Read | |||
| BI | 28008 | Sub28 Boiler pump op Status | Read | |||
| BI | 29001 | Sub29 Burner op state | Read | |||
| BI | 29002 | Sub29 Frozen protection mode | Read | |||
| BI | 29006 | Sub29 Error state | Read | |||
| BI | 29007 | Sub29 Boiler enable status | Read | |||
| BI | 29008 | Sub29 Boiler pump op Status | Read | |||
| BI | 30001 | Sub30 Burner op state | Read | |||
| BI | 30002 | Sub30 Frozen protection mode | Read | |||
| BI | 30006 | Sub30 Error state | Read | |||
| BI | 30007 | Sub30 Boiler enable status | Read | |||
| BI | 30008 | Sub30 Boiler pump op Status | Read | |||
| BI | 31001 | Sub31 Burner op state | Read | |||
| BI | 31002 | Sub31 Frozen protection mode | Read | |||
| BI | 31006 | Sub31 Error state | Read | |||
| BI | 31007 | Sub31 Boiler enable status | Read | |||
| BI | 31008 | Sub31 Boiler pump op Status | Read | |||
| BVmin | 1 | SH operation on/off control | Write | |||
| BV | 2 | Outdoor reset curve usage enable | Write | |||
| BV | 3 | WWSD enable | Write | |||
| BV | 4 | DHW operation ON/OFF control | Write |
No points match these filters.
Object ID lookup: Navien NFB-C Cascade Gateway point IDs by name
AI1Main Operation StatusAI2Main Error codeAI4Main Current Heat capacityAI5Main Supply temperatureAI6Main Return temperatureAI8Main Maximum Heat capacityAI9Main Exhaust temperatureAI10Main Total time after installationAI11Main Number of CH operationAI12Main Total time of CH operationAI13Main Current amount of gasAI14Main Total amount of gasAI101Cascade total unitsAI102Cascade Operating unitsAI103Cascade On/Off stateAI104CC Average Heating capacityAI105CC Maximum Heating capacityAI106Primary total flowAI107Average primary Supply temperatureAI108Average primary return temperatureAI109System Supply temperatureAI110System Return temperatureAI111Error occurrence unit numberAI112Main Error codeAI1001Sub01 Operation StatusAI1002Sub01 Main Error codeAI1004Sub01 Current Heat capacityAI1005Sub01 Supply temperatureAI1006Sub01 Return temperatureAI1008Sub01 Maximum Heat capacityAI1009Sub01 Exhaust temperatureAI1010Sub01 Total time after installationAI1011Sub01 Number of CH operationAI1012Sub01 Total time of CH operationAI1013Sub01 Current amount of gasAI1014Sub01 Total amount of gasAI2001Sub02 Operation StatusAI2002Sub02 Main Error codeAI2004Sub02 Current Heat capacityAI2005Sub02 Supply temperatureAI2006Sub02 Return temperatureAI2008Sub02 Maximum Heat capacityAI2009Sub02 Exhaust temperatureAI2010Sub02 Total time after installationAI2011Sub02 Number of CH operationAI2012Sub02 Total time of CH operationAI2013Sub02 Current amount of gasAI2014Sub02 Total amount of gasAI3001Sub03 Operation StatusAI3002Sub03 Main Error codeAI3004Sub03 Current Heat capacityAI3005Sub03 Supply temperatureAI3006Sub03 Return temperatureAI3008Sub03 Maximum Heat capacityAI3009Sub03 Exhaust temperatureAI3010Sub03 Total time after installationAI3011Sub03 Number of CH operationAI3012Sub03 Total time of CH operationAI3013Sub03 Current amount of gasAI3014Sub03 Total amount of gasAI4001Sub04 Operation StatusAI4002Sub04 Main Error codeAI4004Sub04 Current Heat capacityAI4005Sub04 Supply temperatureAI4006Sub04 Return temperatureAI4008Sub04 Maximum Heat capacityAI4009Sub04 Exhaust temperatureAI4010Sub04 Total time after installationAI4011Sub04 Number of CH operationAI4012Sub04 Total time of CH operationAI4013Sub04 Current amount of gasAI4014Sub04 Total amount of gasAI5001Sub05 Operation StatusAI5002Sub05 Main Error codeAI5004Sub05 Current Heat capacityAI5005Sub05 Supply temperatureAI5006Sub05 Return temperatureAI5008Sub05 Maximum Heat capacityAI5009Sub05 Exhaust temperatureAI5010Sub05 Total time after installationAI5011Sub05 Number of CH operationAI5012Sub05 Total time of CH operationAI5013Sub05 Current amount of gasAI5014Sub05 Total amount of gasAI6001Sub06 Operation StatusAI6002Sub06 Main Error codeAI6004Sub06 Current Heat capacityAI6005Sub06 Supply temperatureAI6006Sub06 Return temperatureAI6008Sub06 Maximum Heat capacityAI6009Sub06 Exhaust temperatureAI6010Sub06 Total time after installationAI6011Sub06 Number of CH operationAI6012Sub06 Total time of CH operationAI6013Sub06 Current amount of gasAI6014Sub06 Total amount of gasAI7001Sub07 Operation StatusAI7002Sub07 Main Error codeAI7004Sub07 Current Heat capacityAI7005Sub07 Supply temperatureAI7006Sub07 Return temperatureAI7008Sub07 Maximum Heat capacityAI7009Sub07 Exhaust temperatureAI7010Sub07 Total time after installationAI7011Sub07 Number of CH operationAI7012Sub07 Total time of CH operationAI7013Sub07 Current amount of gasAI7014Sub07 Total amount of gasAI8001Sub08 Operation StatusAI8002Sub08 Main Error codeAI8004Sub08 Current Heat capacityAI8005Sub08 Supply temperatureAI8006Sub08 Return temperatureAI8008Sub08 Maximum Heat capacityAI8009Sub08 Exhaust temperatureAI8010Sub08 Total time after installationAI8011Sub08 Number of CH operationAI8012Sub08 Total time of CH operationAI8013Sub08 Current amount of gasAI8014Sub08 Total amount of gasAI9001Sub09 Operation StatusAI9002Sub09 Main Error codeAI9004Sub09 Current Heat capacityAI9005Sub09 Supply temperatureAI9006Sub09 Return temperatureAI9008Sub09 Maximum Heat capacityAI9009Sub09 Exhaust temperatureAI9010Sub09 Total time after installationAI9011Sub09 Number of CH operationAI9012Sub09 Total time of CH operationAI9013Sub09 Current amount of gasAI9014Sub09 Total amount of gasAI10001Sub10 Operation StatusAI10002Sub10 Main Error codeAI10004Sub10 Current Heat capacityAI10005Sub10 Supply temperatureAI10006Sub10 Return temperatureAI10008Sub10 Maximum Heat capacityAI10009Sub10 Exhaust temperatureAI10010Sub10 Total time after installationAI10011Sub10 Number of CH operationAI10012Sub10 Total time of CH operationAI10013Sub10 Current amount of gasAI10014Sub10 Total amount of gasAI11001Sub11 Operation StatusAI11002Sub11 Main Error codeAI11004Sub11 Current Heat capacityAI11005Sub11 Supply temperatureAI11006Sub11 Return temperatureAI11008Sub11 Maximum Heat capacityAI11009Sub11 Exhaust temperatureAI11010Sub11 Total time after installationAI11011Sub11 Number of CH operationAI11012Sub11 Total time of CH operationAI11013Sub11 Current amount of gasAI11014Sub11 Total amount of gasAI12001Sub12 Operation StatusAI12002Sub12 Main Error codeAI12004Sub12 Current Heat capacityAI12005Sub12 Supply temperatureAI12006Sub12 Return temperatureAI12008Sub12 Maximum Heat capacityAI12009Sub12 Exhaust temperatureAI12010Sub12 Total time after installationAI12011Sub12 Number of CH operationAI12012Sub12 Total time of CH operationAI12013Sub12 Current amount of gasAI12014Sub12 Total amount of gasAI13001Sub13 Operation StatusAI13002Sub13 Main Error codeAI13004Sub13 Current Heat capacityAI13005Sub13 Supply temperatureAI13006Sub13 Return temperatureAI13008Sub13 Maximum Heat capacityAI13009Sub13 Exhaust temperatureAI13010Sub13 Total time after installationAI13011Sub13 Number of CH operationAI13012Sub13 Total time of CH operationAI13013Sub13 Current amount of gasAI13014Sub13 Total amount of gasAI14001Sub14 Operation StatusAI14002Sub14 Main Error codeAI14004Sub14 Current Heat capacityAI14005Sub14 Supply temperatureAI14006Sub14 Return temperatureAI14008Sub14 Maximum Heat capacityAI14009Sub14 Exhaust temperatureAI14010Sub14 Total time after installationAI14011Sub14 Number of CH operationAI14012Sub14 Total time of CH operationAI14013Sub14 Current amount of gasAI14014Sub14 Total amount of gasAI15001Sub15 Operation StatusAI15002Sub15 Main Error codeAI15004Sub15 Current Heat capacityAI15005Sub15 Supply temperatureAI15006Sub15 Return temperatureAI15008Sub15 Maximum Heat capacityAI15009Sub15 Exhaust temperatureAI15010Sub15 Total time after installationAI15011Sub15 Number of CH operationAI15012Sub15 Total time of CH operationAI15013Sub15 Current amount of gasAI15014Sub15 Total amount of gasAI16001Sub16 Operation StatusAI16002Sub16 Main Error codeAI16004Sub16 Current Heat capacityAI16005Sub16 Supply temperatureAI16006Sub16 Return temperatureAI16008Sub16 Maximum Heat capacityAI16009Sub16 Exhaust temperatureAI16010Sub16 Total time after installationAI16011Sub16 Number of CH operationAI16012Sub16 Total time of CH operationAI16013Sub16 Current amount of gasAI16014Sub16 Total amount of gasAI17001Sub17 Operation StatusAI17002Sub17 Main Error codeAI17004Sub17 Current Heat capacityAI17005Sub17 Supply temperatureAI17006Sub17 Return temperatureAI17008Sub17 Maximum Heat capacityAI17009Sub17 Exhaust temperatureAI17010Sub17 Total time after installationAI17011Sub17 Number of CH operationAI17012Sub17 Total time of CH operationAI17013Sub17 Current amount of gasAI17014Sub17 Total amount of gasAI18001Sub18 Operation StatusAI18002Sub18 Main Error codeAI18004Sub18 Current Heat capacityAI18005Sub18 Supply temperatureAI18006Sub18 Return temperatureAI18008Sub18 Maximum Heat capacityAI18009Sub18 Exhaust temperatureAI18010Sub18 Total time after installationAI18011Sub18 Number of CH operationAI18012Sub18 Total time of CH operationAI18013Sub18 Current amount of gasAI18014Sub18 Total amount of gasAI19001Sub19 Operation StatusAI19002Sub19 Main Error codeAI19004Sub19 Current Heat capacityAI19005Sub19 Supply temperatureAI19006Sub19 Return temperatureAI19008Sub19 Maximum Heat capacityAI19009Sub19 Exhaust temperatureAI19010Sub19 Total time after installationAI19011Sub19 Number of CH operationAI19012Sub19 Total time of CH operationAI19013Sub19 Current amount of gasAI19014Sub19 Total amount of gasAI20001Sub20 Operation StatusAI20002Sub20 Main Error codeAI20004Sub20 Current Heat capacityAI20005Sub20 Supply temperatureAI20006Sub20 Return temperatureAI20008Sub20 Maximum Heat capacityAI20009Sub20 Exhaust temperatureAI20010Sub20 Total time after installationAI20011Sub20 Number of CH operationAI20012Sub20 Total time of CH operationAI20013Sub20 Current amount of gasAI20014Sub20 Total amount of gasAI21001Sub21 Operation StatusAI21002Sub21 Main Error codeAI21004Sub21 Current Heat capacityAI21005Sub21 Supply temperatureAI21006Sub21 Return temperatureAI21008Sub21 Maximum Heat capacityAI21009Sub21 Exhaust temperatureAI21010Sub21 Total time after installationAI21011Sub21 Number of CH operationAI21012Sub21 Total time of CH operationAI21013Sub21 Current amount of gasAI21014Sub21 Total amount of gasAI22001Sub22 Operation StatusAI22002Sub22 Main Error codeAI22004Sub22 Current Heat capacityAI22005Sub22 Supply temperatureAI22006Sub22 Return temperatureAI22008Sub22 Maximum Heat capacityAI22009Sub22 Exhaust temperatureAI22010Sub22 Total time after installationAI22011Sub22 Number of CH operationAI22012Sub22 Total time of CH operationAI22013Sub22 Current amount of gasAI22014Sub22 Total amount of gasAI23001Sub23 Operation StatusAI23002Sub23 Main Error codeAI23004Sub23 Current Heat capacityAI23005Sub23 Supply temperatureAI23006Sub23 Return temperatureAI23008Sub23 Maximum Heat capacityAI23009Sub23 Exhaust temperatureAI23010Sub23 Total time after installationAI23011Sub23 Number of CH operationAI23012Sub23 Total time of CH operationAI23013Sub23 Current amount of gasAI23014Sub23 Total amount of gasAI24001Sub24 Operation StatusAI24002Sub24 Main Error codeAI24004Sub24 Current Heat capacityAI24005Sub24 Supply temperatureAI24006Sub24 Return temperatureAI24008Sub24 Maximum Heat capacityAI24009Sub24 Exhaust temperatureAI24010Sub24 Total time after installationAI24011Sub24 Number of CH operationAI24012Sub24 Total time of CH operationAI24013Sub24 Current amount of gasAI24014Sub24 Total amount of gasAI25001Sub25 Operation StatusAI25002Sub25 Main Error codeAI25004Sub25 Current Heat capacityAI25005Sub25 Supply temperatureAI25006Sub25 Return temperatureAI25008Sub25 Maximum Heat capacityAI25009Sub25 Exhaust temperatureAI25010Sub25 Total time after installationAI25011Sub25 Number of CH operationAI25012Sub25 Total time of CH operationAI25013Sub25 Current amount of gasAI25014Sub25 Total amount of gasAI26001Sub26 Operation StatusAI26002Sub26 Main Error codeAI26004Sub26 Current Heat capacityAI26005Sub26 Supply temperatureAI26006Sub26 Return temperatureAI26008Sub26 Maximum Heat capacityAI26009Sub26 Exhaust temperatureAI26010Sub26 Total time after installationAI26011Sub26 Number of CH operationAI26012Sub26 Total time of CH operationAI26013Sub26 Current amount of gasAI26014Sub26 Total amount of gasAI27001Sub27 Operation StatusAI27002Sub27 Main Error codeAI27004Sub27 Current Heat capacityAI27005Sub27 Supply temperatureAI27006Sub27 Return temperatureAI27008Sub27 Maximum Heat capacityAI27009Sub27 Exhaust temperatureAI27010Sub27 Total time after installationAI27011Sub27 Number of CH operationAI27012Sub27 Total time of CH operationAI27013Sub27 Current amount of gasAI27014Sub27 Total amount of gasAI28001Sub28 Operation StatusAI28002Sub28 Main Error codeAI28004Sub28 Current Heat capacityAI28005Sub28 Supply temperatureAI28006Sub28 Return temperatureAI28008Sub28 Maximum Heat capacityAI28009Sub28 Exhaust temperatureAI28010Sub28 Total time after installationAI28011Sub28 Number of CH operationAI28012Sub28 Total time of CH operationAI28013Sub28 Current amount of gasAI28014Sub28 Total amount of gasAI29001Sub29 Operation StatusAI29002Sub29 Main Error codeAI29004Sub29 Current Heat capacityAI29005Sub29 Supply temperatureAI29006Sub29 Return temperatureAI29008Sub29 Maximum Heat capacityAI29009Sub29 Exhaust temperatureAI29010Sub29 Total time after installationAI29011Sub29 Number of CH operationAI29012Sub29 Total time of CH operationAI29013Sub29 Current amount of gasAI29014Sub29 Total amount of gasAI30001Sub30 Operation StatusAI30002Sub30 Main Error codeAI30004Sub30 Current Heat capacityAI30005Sub30 Supply temperatureAI30006Sub30 Return temperatureAI30008Sub30 Maximum Heat capacityAI30009Sub30 Exhaust temperatureAI30010Sub30 Total time after installationAI30011Sub30 Number of CH operationAI30012Sub30 Total time of CH operationAI30013Sub30 Current amount of gasAI30014Sub30 Total amount of gasAI31001Sub31 Operation StatusAI31002Sub31 Main Error codeAI31004Sub31 Current Heat capacityAI31005Sub31 Supply temperatureAI31006Sub31 Return temperatureAI31008Sub31 Maximum Heat capacityAI31009Sub31 Exhaust temperatureAI31010Sub31 Total time after installationAI31011Sub31 Number of CH operationAI31012Sub31 Total time of CH operationAI31013Sub31 Current amount of gasAI31014Sub31 Total amount of gasAV1Boiler On/Off commandAV2SH supply setpoint settingAV3SH return setpoint settingAV4DHW setpoint settingAV5Error reset commandAV7Boiler setpoint in DHW operationAV9Outdoor reset curve heatload settingAV10Maximum outdoor temperature settingAV11Minimum outdoor temperature settingAV12WWSD temperature settingAV13WWSD On differential settingAV14Boost interval time settingAV15Cascade Initial op units settingAV16CH supply min temperature settingAV17CH supply max temperature settingAV18CH return min temperature settingAV19CH return max temperature settingBI1Main Burner op stateBI2Main Frozen protection modeBI6Main Error stateBI7Main Boiler enable statusBI8Main Boiler pump op StatusBI101Cascade system enable stateBI102Cascade burning stateBI103Cascade SH operation stateBI1001Sub01 Burner op stateBI1002Sub01 Frozen protection modeBI1006Sub01 Error stateBI1007Sub01 Boiler enable statusBI1008Sub01 Boiler pump op StatusBI2001Sub02 Burner op stateBI2002Sub02 Frozen protection modeBI2006Sub02 Error stateBI2007Sub02 Boiler enable statusBI2008Sub02 Boiler pump op StatusBI3001Sub03 Burner op stateBI3002Sub03 Frozen protection modeBI3006Sub03 Error stateBI3007Sub03 Boiler enable statusBI3008Sub03 Boiler pump op StatusBI4001Sub04 Burner op stateBI4002Sub04 Frozen protection modeBI4006Sub04 Error stateBI4007Sub04 Boiler enable statusBI4008Sub04 Boiler pump op StatusBI5001Sub05 Burner op stateBI5002Sub05 Frozen protection modeBI5006Sub05 Error stateBI5007Sub05 Boiler enable statusBI5008Sub05 Boiler pump op StatusBI6001Sub06 Burner op stateBI6002Sub06 Frozen protection modeBI6006Sub06 Error stateBI6007Sub06 Boiler enable statusBI6008Sub06 Boiler pump op StatusBI7001Sub07 Burner op stateBI7002Sub07 Frozen protection modeBI7006Sub07 Error stateBI7007Sub07 Boiler enable statusBI7008Sub07 Boiler pump op StatusBI8001Sub08 Burner op stateBI8002Sub08 Frozen protection modeBI8006Sub08 Error stateBI8007Sub08 Boiler enable statusBI8008Sub08 Boiler pump op StatusBI9001Sub09 Burner op stateBI9002Sub09 Frozen protection modeBI9006Sub09 Error stateBI9007Sub09 Boiler enable statusBI9008Sub09 Boiler pump op StatusBI10001Sub10 Burner op stateBI10002Sub10 Frozen protection modeBI10006Sub10 Error stateBI10007Sub10 Boiler enable statusBI10008Sub10 Boiler pump op StatusBI11001Sub11 Burner op stateBI11002Sub11 Frozen protection modeBI11006Sub11 Error stateBI11007Sub11 Boiler enable statusBI11008Sub11 Boiler pump op StatusBI12001Sub12 Burner op stateBI12002Sub12 Frozen protection modeBI12006Sub12 Error stateBI12007Sub12 Boiler enable statusBI12008Sub12 Boiler pump op StatusBI13001Sub13 Burner op stateBI13002Sub13 Frozen protection modeBI13006Sub13 Error stateBI13007Sub13 Boiler enable statusBI13008Sub13 Boiler pump op StatusBI14001Sub14 Burner op stateBI14002Sub14 Frozen protection modeBI14006Sub14 Error stateBI14007Sub14 Boiler enable statusBI14008Sub14 Boiler pump op StatusBI15001Sub15 Burner op stateBI15002Sub15 Frozen protection modeBI15006Sub15 Error stateBI15007Sub15 Boiler enable statusBI15008Sub15 Boiler pump op StatusBI16001Sub16 Burner op stateBI16002Sub16 Frozen protection modeBI16006Sub16 Error stateBI16007Sub16 Boiler enable statusBI16008Sub16 Boiler pump op StatusBI17001Sub17 Burner op stateBI17002Sub17 Frozen protection modeBI17006Sub17 Error stateBI17007Sub17 Boiler enable statusBI17008Sub17 Boiler pump op StatusBI18001Sub18 Burner op stateBI18002Sub18 Frozen protection modeBI18006Sub18 Error stateBI18007Sub18 Boiler enable statusBI18008Sub18 Boiler pump op StatusBI19001Sub19 Burner op stateBI19002Sub19 Frozen protection modeBI19006Sub19 Error stateBI19007Sub19 Boiler enable statusBI19008Sub19 Boiler pump op StatusBI20001Sub20 Burner op stateBI20002Sub20 Frozen protection modeBI20006Sub20 Error stateBI20007Sub20 Boiler enable statusBI20008Sub20 Boiler pump op StatusBI21001Sub21 Burner op stateBI21002Sub21 Frozen protection modeBI21006Sub21 Error stateBI21007Sub21 Boiler enable statusBI21008Sub21 Boiler pump op StatusBI22001Sub22 Burner op stateBI22002Sub22 Frozen protection modeBI22006Sub22 Error stateBI22007Sub22 Boiler enable statusBI22008Sub22 Boiler pump op StatusBI23001Sub23 Burner op stateBI23002Sub23 Frozen protection modeBI23006Sub23 Error stateBI23007Sub23 Boiler enable statusBI23008Sub23 Boiler pump op StatusBI24001Sub24 Burner op stateBI24002Sub24 Frozen protection modeBI24006Sub24 Error stateBI24007Sub24 Boiler enable statusBI24008Sub24 Boiler pump op StatusBI25001Sub25 Burner op stateBI25002Sub25 Frozen protection modeBI25006Sub25 Error stateBI25007Sub25 Boiler enable statusBI25008Sub25 Boiler pump op StatusBI26001Sub26 Burner op stateBI26002Sub26 Frozen protection modeBI26006Sub26 Error stateBI26007Sub26 Boiler enable statusBI26008Sub26 Boiler pump op StatusBI27001Sub27 Burner op stateBI27002Sub27 Frozen protection modeBI27006Sub27 Error stateBI27007Sub27 Boiler enable statusBI27008Sub27 Boiler pump op StatusBI28001Sub28 Burner op stateBI28002Sub28 Frozen protection modeBI28006Sub28 Error stateBI28007Sub28 Boiler enable statusBI28008Sub28 Boiler pump op StatusBI29001Sub29 Burner op stateBI29002Sub29 Frozen protection modeBI29006Sub29 Error stateBI29007Sub29 Boiler enable statusBI29008Sub29 Boiler pump op StatusBI30001Sub30 Burner op stateBI30002Sub30 Frozen protection modeBI30006Sub30 Error stateBI30007Sub30 Boiler enable statusBI30008Sub30 Boiler pump op StatusBI31001Sub31 Burner op stateBI31002Sub31 Frozen protection modeBI31006Sub31 Error stateBI31007Sub31 Boiler enable statusBI31008Sub31 Boiler pump op StatusBV1SH operation on/off controlBV2Outdoor reset curve usage enableBV3WWSD enableBV4DHW operation ON/OFF control
Integration notes
- From Appendix C.2, NFB-C Main 1 Sub 1 - Sub 31 Modbus RTU mappings to BACnet/IP and BACnet MS/TP (guide pages 26-34).
- The table gives only point name, object type and instance: no units, ranges or read/write column. Access here is inferred: AV and BV objects are treated as writable commands and settings, AI and BI as read-only.
- Sub boiler points use instance = Sub number x 1000 + offset (Sub05 Error state = BI 5006); every Sub block is printed and listed here.
- Sub blocks for boilers that are not installed will have no live data.
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 NFB-C Fire Tube Boiler - Cascade Main + Sub 1-31 (Modbus/BACnet Gateway) 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 Navien NFB-C Fire Tube Boiler - Cascade Main + Sub 1-31 (Modbus/BACnet Gateway)
How many BACnet points does the Navien NFB-C Fire Tube Boiler - Cascade Main + Sub 1-31 (Modbus/BACnet Gateway) have?
This list has 580 BACnet objects: 396 analog inputs, 17 analog values, 163 binary inputs, 4 binary values. The exact set on a given unit depends on its firmware, installed options and configuration.
Which Navien NFB-C Fire Tube Boiler - Cascade Main + Sub 1-31 (Modbus/BACnet Gateway) BACnet points are writable?
21 of the 580 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 Navien NFB-C Fire Tube Boiler - Cascade Main + Sub 1-31 (Modbus/BACnet Gateway) BACnet documentation?
The source is Modbus/BACnet Gateway Start-up Guide (Installation & Operation Manual) for interfacing Navien products to building automation systems, revision Effective October 1, 2019, published free by Navien at https://www.navieninc.com/downloads/modbus-bacnet-installation-and-operation-manual-en/download.
What are the minimum BACnet points to integrate the Navien NFB-C Fire Tube Boiler - Cascade Main + Sub 1-31 (Modbus/BACnet Gateway)?
Start with AV 1 Boiler On/Off command (Cascade on/off command); BV 1 SH operation on/off control (Space heating on/off); AV 2 SH supply setpoint setting (Space-heat supply water setpoint); AV 4 DHW setpoint setting (Domestic hot water setpoint); AV 5 Error reset command (Resets boiler errors); BI 101 Cascade system enable state (Cascade system enabled); BI 102 Cascade burning state (Cascade burner firing); BI 6 Main Error state (Main boiler in error).
How do I enable BMS control of the Navien NFB-C Fire Tube Boiler - Cascade Main + Sub 1-31 (Modbus/BACnet Gateway)?
Boiler On/Off command (AV 1) and SH operation on/off control (BV 1) switch the cascade and space heating; DHW operation ON/OFF control (BV 4) does the same for hot water.
How do I check these points on the real NFB-C Fire Tube Boiler - Cascade Main + Sub 1-31 (Modbus/BACnet Gateway)?
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 Navien BACnet points lists
Source: Modbus/BACnet Gateway Start-up Guide (Installation & Operation Manual) for interfacing Navien products to building automation systems · rev. Effective October 1, 2019. Object names, instances and units are reproduced as published; descriptions are our own.