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Gas-fired steam humidifier · BACnet points list
Neptronic SKG (legacy, pre-SKG4) gas-fired humidifier with NEPICSKG BACnet module BACnet points list
Updated 12 November 2026
The NEPICSKG module gives the older SKG gas-fired humidifier a BACnet MS/TP interface (B-ASC). A common block (instances 1-99) carries humidity output, demand, room and duct humidity, setpoints, delays, PID settings, status and alarm flags and the control, operation and source selectors; each tank adds its own block (101-199 for tank 1 up to 401-499 for tank 4) with water and chimney temperatures, water level, burner demand and fan speed, timers, status flags and alarms.
This page lists 199 BACnet objects for the Neptronic SKG (legacy, pre-SKG4) gas-fired humidifier with NEPICSKG BACnet module — 115 of them writable — with each object’s type, instance number, name, engineering units and access. It is re-typed from Neptronic’s own free documentation, linked below.
- Manufacturer
- Neptronic
- Model
- SKG (legacy, pre-SKG4) gas-fired humidifier with NEPICSKG BACnet module
- Equipment
- Gas-fired steam humidifier
- Equipment type
- Humidifiers
- BACnet objects
- 199 (115 writable)
- Transport
- BACnet MS/TP
- Firmware
- 1.00
- Default device instance
- 153000
- Also known as
- SKG, SKG3, Neptronic SKG, NEPICSKG, SKG-BACNET, SKG gas fired humidifier
Reference only, provided as-is: verify against Neptronic’s current documentation and the live device before use. Not official Neptronic information. Terms of use.
BMS integration notes: Neptronic SKG (legacy, pre-SKG4) gas-fired humidifier with NEPICSKG BACnet module
For BMS demand control set MSV 1 Ctl_Mode to 3 and write AV 1 Humidity_Demand; for the internal PID set MSV 1 to 2, choose the setpoint and humidity sources (MSV 4-6) and write AV 16 and AV 2. MSV 2 turns the unit off, on or to drain. Read BI 1, AI 1 and the two summary alarms BI 4 and BI 5.
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 |
|---|---|---|---|
| MV 2 | Operation_Mode | Unit off, on or drain | Write |
| MV 1 | Ctl_Mode | Control mode; 3 = demand from BACnet | Write |
| AV 1 | Humidity_Demand | Humidity demand from the BMS, % | Write |
| AV 16 | Ctl_SP | Humidity setpoint for internal PID, %RH | Write |
| AV 2 | Room_Humidity | Room RH from the BMS (remote source) | Write |
| BI 1 | Power_Status | Unit power on | Read |
| AI 1 | Humidity_Out | Humidifier output, % | Read |
| BI 4 | Alrm_Not_Critical | Non-critical alarm, unit still running | Read |
| BI 5 | Alarm_Critical | Critical alarm, unit stopped | Read |
Enable & remote start
MSV 2 Operation_Mode sets the unit off (1), on (2) or to drain (3). MSV 1 Ctl_Mode picks the demand source: 1 = analog input 1, 2 = internal PID, 3 = remote demand over BACnet.
Sensors & values from the BMS
With MSV 5 Room_Hum_Source = 2 and MSV 6 Duct_Hum_Source = 3 (remote) the BMS writes AV 2 Room_Humidity and AV 4 Duct_Humidity; MSV 4 SP_Source = 3 takes the setpoint from BACnet.
Network setup
- A configuration DIP switch puts the module in configure mode (MAC 254, wildcard device instance 4194303); two more DIP switches set 9600, 19200, 38400 or 76800 baud.
- Defaults: MAC 0, device instance 153000, device name NEPSKGHumidifier153000, Max_Master 127; MAC and device instance can also be set from the unit keypad in configure mode.
Watch out for
- Tank objects only respond for tanks that exist on the unit.
- Temperatures follow BV 1 Temperature_Unit (Celsius or Fahrenheit).
Neptronic SKG (legacy, pre-SKG4) gas-fired humidifier with NEPICSKG BACnet module 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 | 1 | Humidity_Out | Humidity Output (0-100 %RH) | %RH | Read | |
| AVmin | 1 | Humidity_Demand | Humidity Demand (0-100 %RH) | %RH | Write | |
| AVmin | 2 | Room_Humidity | Room Humidity (0-100 %RH) | %RH | Write | |
| AV | 3 | Room_Humidity_Off | Room Humidity offset (±0-10.0 %RH) | %RH | Write | |
| AV | 4 | Duct_Humidity | Duct Humidity (0-100 %RH) | %RH | Write | |
| AV | 5 | Duct_Humidity_Off | Duct Humidity offset (±0-10.0 %RH) | %RH | Write | |
| AV | 6 | Outside_Temp | Outside Temperature (-40 - 40 °C or -40 - 104 °F) | °C/°F | Write | |
| AV | 7 | Lock_On_Capacity | Lock On capacity (10-100%) | % | Write | |
| AV | 8 | Max_Output_Limit | Maximum output limit (10-100%) | % | Write | |
| AV | 9 | Drain_Delay | Drain Delay (1-100Hrs) | h | Write | |
| AV | 10 | Service_Delay | Service Delay (1-5000Hrs) | h | Write | |
| AV | 11 | End_Season_Delay | End of season delay (1-250Hrs) | h | Write | |
| AV | 12 | PID_Loop_KP | PID Loop gain KP (0-255) | Write | ||
| AV | 13 | PID_Loop_KI | PID Loop gain KI (0-255) | Write | ||
| AV | 14 | PID_Loop_KD | PID Loop gain KD (0-255) | Write | ||
| AV | 15 | Ctl_Band | Control band (0-20.0% (0..200)) | % | Write | |
| AVmin | 16 | Ctl_SP | Control set point (0-100%RH) | %RH | Write | |
| AV | 17 | Extern_SP_Min | External setpoint minimum (0-100%RH) | %RH | Write | |
| AV | 18 | Extern_SP_Max | External setpoint maximum (0-100%RH) | %RH | Write | |
| AV | 19 | Duct_Hum_HiLim_SP | Duct hum. high limit set point (50-100%RH) | %RH | Write | |
| AV | 20 | Min_ON_Time_Fan | Minimum ON time for fan (2-20 minutes) | min | Write | |
| AV | 21 | Min_H2O_Temp | Min. water temp. in ON mode (50-90 °C or 122-194 °F (0 | °C/°F | Write | |
| AV | 22 | Antifreeze_Temp | Anti-freeze mode temperature (7-12 °C or 44-54 °F (0 -> Mode is | °C/°F | Write | |
| AV | 23 | Analog_Ctl_In_Lo | Analog Control input Lo Limit (0-10.00VDC) | V | Write | |
| AV | 24 | Analog_Ctl_In_Hi | Analog Control input Hi Limit (0-10.00VDC) | V | Write | |
| AV | 25 | Analog_Hum_In_Lo | Analog Humidity input Lo Limit (0-10.00VDC) | V | Write | |
| AV | 26 | Analog_Hum_In_Hi | Analog Humidity input Hi Limit (0-10.00VDC) | V | Write | |
| AV | 27 | Analog_Duct_In_Lo | Analog Duct input Lo Limit (0-10.00VDC) | V | Write | |
| AV | 28 | Analog_Duct_In_Hi | Analog Duct input Hi Limit (0-10.00VDC) | V | Write | |
| BImin | 1 | Power_Status | Power Status | Read | 0=OFF, 1=ON | |
| BI | 2 | Humidity_Demand | Humidity Demand | Read | 0=NO, 1=YES | |
| BI | 3 | Manual_Drain | Manual Drain | Read | 0=NO, 1=YES | |
| BImin | 4 | Alrm_Not_Critical | Alarm not critical (unit running) | Read | 0=NO, 1=YES | |
| BImin | 5 | Alarm_Critical | Alarm critical (unit not running) | Read | 0=NO, 1=YES | |
| BI | 6 | End_of_Season_Dly | End of Season Delay | Read | 0=NO, 1=YES | |
| BI | 7 | Fan_Proof_Status | Fan proof Status | Read | 0=OFF, 1=ON | |
| BI | 8 | HiLimit_Status | Hi-Limit Status | Read | 0=OFF, 1=ON | |
| BI | 9 | Interlock | Interlock | Read | 0=OFF, 1=ON | |
| BI | 10 | Thermal_Fuse_Ext | Thermal fuse (external 24VAC) | Read | 0=OFF, 1=ON | |
| BI | 11 | Thermal_Fuse_Int | Thermal fuse (internal 24VDC) | Read | 0=OFF, 1=ON | |
| BI | 12 | Interlock_In_Open | Interlock input open | Read | 0=Normal, 1=Alarm | |
| BI | 13 | High_Hum_In_Duct | High humidity level in the duct | Read | 0=Normal, 1=Alarm | |
| BI | 14 | Input_Voltage_Low | Input voltage too low | Read | 0=Normal, 1=Alarm | |
| BI | 15 | Thermal_Fuse_Open | Thermal Fuse open (24VAC) | Read | 0=Normal, 1=Alarm | |
| BI | 16 | Slave_Comm_Lost | Comm lost with slave board | Read | 0=Normal, 1=Alarm | |
| BI | 17 | Hum_Clean_Start | Humidifier started cleaning period | Read | 0=Normal, 1=Alarm | |
| BI | 18 | Hum_Ex_Svc_Time | Humidifier exceeded service time | Read | 0=Normal, 1=Alarm | |
| BV | 1 | Temperature_Unit | Temperature Unit | Write | 0=Celcius, 1=Fahrenheit | |
| BV | 2 | Outside_Temp_Comp | Outside Temp. Compensation | Write | 0=OFF, 1=ON | |
| BV | 3 | Alarm_Beep | Alarm Beep | Write | 0=OFF, 1=ON | |
| BV | 4 | Demand_SP_Type | Demand/Set point type | Write | 0=Voltage, 1=Current | |
| BV | 5 | Humidity_In_Type | Humidity input type | Write | 0=Voltage, 1=Current | |
| BV | 6 | HiLim_Hum_In_Type | Hi-limit humidity input type | Write | 0=Voltage, 1=Current | |
| MVmin | 1 | Ctl_Mode | Control Mode | Write | 1=Demand from analog input 1 (default), 2=Internal PID loop calculation, 3=Demand from remote communication port (e.g. BACnet) | |
| MVmin | 2 | Operation_Mode | Operation Mode | Write | 1=Set unit Off, 2=Set unit On, 3=Set unit in drain mode | |
| MV | 3 | Unit_Display_Lang | Unit Display Language | Write | 1=English (Default), 2=French, 3=Spanish | |
| MV | 4 | SP_Source | Setpoint Source | Write | 1=Local analog input 1, 2=Local Internal digital value, 3=Remote from communication port (e.g. BACnet) | |
| MV | 5 | Room_Hum_Source | Room Humidity Source | Read | 1=Local analog input 2 (default), 2=Remote from communication port (e.g. BACnet) | |
| MV | 6 | Duct_Hum_Source | Duct Humidity Source | Write | 1=Not used, 2=Local analog input 3, 3=Remote from communication port (e.g. BACnet) | |
| AI | 101 | Water_Temp1 | Water Temperature 1 (0-260 °C or 32-500 °F) | °C/°F | Read | |
| AI | 102 | Chimney_Temp1 | Chimney Temperature 1 (0-260 °C or 32-500 °F) | °C/°F | Read | |
| AI | 103 | Water_Level1 | Water level 1 (0-120%) | % | Read | |
| AI | 104 | Burner_Demand1 | Burner Demand 1 (0.0 - 100.0%) | % | Read | |
| AI | 105 | Op_Timer_Total1 | Operation Timer 1 (Total time) (1-1677215Hrs) | h | Read | |
| AI | 106 | Op_Timer1 | Operation Timer 1 (1-5000Hrs) | h | Read | |
| AI | 107 | Delay_Autodrain1 | Delay until Auto-drain 1 (1-100Hrs) | h | Read | |
| AI | 108 | Foam_Probe_Sensr1 | Foam Probe Sensor 1 (0-255) | Read | ||
| AI | 109 | Burner_Fan_Speed1 | Burner Fan Speed 1 (0-1000Hz) | Hz | Read | |
| AV | 101 | Water_Temp_Off1 | Water Temperature offset 1 (±0-20 °C or ±0-40 °F) | °C/°F | Write | |
| AV | 102 | Chimney_Temp_Off1 | Chimney Temperature offset 1 (±0-20 °C or ±0-40 °F) | °C/°F | Write | |
| AV | 103 | Water_Level_Off1 | Water Level offset 1 (±0-20%) | % | Write | |
| BV | 101 | OverTemp_Cont_ON1 | Over temperature contact ON 1 | Write | 0=Normal, 1=Alarm | |
| BV | 102 | Bad_Fill_Tank1 | Defective filling tank 1 | Write | 0=Normal, 1=Alarm | |
| BV | 103 | Bad_Refill_Tank1 | Defective refill tank 1(too long) | Write | 0=Normal, 1=Alarm | |
| BV | 104 | Bad_Drain_Tank1 | Defective draining tank 1 | Write | 0=Normal, 1=Alarm | |
| BV | 105 | Bad_Burner_Fan1 | Defective Burner Fan 1 | Write | 0=Normal, 1=Alarm | |
| BV | 106 | Bad_Burner_Gas1 | Defective Burner Gas 1(Locked) | Write | 0=Normal, 1=Alarm | |
| BV | 107 | Input_Volt_Low1 | Input voltage 1 too low | Write | 0=Normal, 1=Alarm | |
| BV | 108 | Power_Fuse_Open1 | Power Fuse 1 open (24VAC) | Write | 0=Normal, 1=Alarm | |
| BV | 109 | Tank_Sens_Bad1 | Tank sensor 1 defective | Write | 0=Normal, 1=Alarm | |
| BV | 110 | Chim_Sens_Bad1 | Chimney sensor 1 defective | Write | 0=Normal, 1=Alarm | |
| BV | 111 | H2OLvl_Prb_Bad1 | Water level probe 1 defect | Write | 0=Normal, 1=Alarm | |
| BV | 112 | Foam_Sens_ON1 | Foam Sensor 1 ON | Write | 0=Normal, 1=Alarm | |
| BV | 113 | OverFlow_DripPan1 | Over Flow, Drip Pan 1 | Write | 0=Normal, 1=Alarm | |
| BV | 114 | Tank_Temp_Low1 | Tank temper. 1 Too low (freeze) | Write | 0=Normal, 1=Alarm | |
| BV | 115 | Tank_Temp_Hi1 | Tank temperature 1 too high | Write | 0=Normal, 1=Alarm | |
| BV | 116 | Chimney_Temp_Hi1 | Chimney temperature 1 too high | Write | 0=Normal, 1=Alarm | |
| BI | 101 | Burner_Valve1 | Burner Valve 1 | Read | 0=OFF, 1=ON | |
| BI | 102 | Burner_Fan1 | Burner Fan 1 | Read | 0=OFF, 1=ON | |
| BI | 103 | Fill_Tank1 | Fill Tank 1 | Read | 0=OFF, 1=ON | |
| BI | 104 | Drain_Tank1 | Drain Tank 1 | Read | 0=OFF, 1=ON | |
| BI | 105 | Water_Level_OK1 | Water Level 1 Okay | Read | 0=OFF, 1=ON | |
| BI | 106 | Modulation Stat1 | Modulation Status 1 | Read | 0=OFF, 1=ON | |
| MI | 101 | Unit_Size1 | Unit Size 1 | Read | 1=100Lbs/Hr, 2=150Lbs/Hr, 3=175Lbs/Hr, 4=200Lbs/Hr | |
| AI | 201 | Water_Temp2 | Water Temperature 2 (0-260 °C or 32-500 °F) | °C/°F | Read | |
| AI | 202 | Chimney_Temp2 | Chimney Temperature 2 (0-260 °C or 32-500 °F) | °C/°F | Read | |
| AI | 203 | Water_Level2 | Water level 2 (0-120%) | % | Read | |
| AI | 204 | Burner_Demand2 | Burner Demand 2 (0.0 - 100.0%) | % | Read | |
| AI | 205 | Op_Timer_Total2 | Operation Timer 2 (Total time) (1-1677215Hrs) | h | Read | |
| AI | 206 | Op_Timer2 | Operation Timer 2 (1-5000Hrs) | h | Read | |
| AI | 207 | Delay_Autodrain2 | Delay until Auto-drain 2 (1-100Hrs) | h | Read | |
| AI | 208 | Foam_Probe_Sensr2 | Foam Probe Sensor 2 (0-255) | Read | ||
| AI | 209 | Burner_Fan_Speed2 | Burner Fan Speed 2 (0-1000Hz) | Hz | Read | |
| AV | 201 | Water_Temp_Off2 | Water Temperature offset 2 (±0-20 °C or ±0-40 °F) | °C/°F | Write | |
| AV | 202 | Chimney_Temp_Off2 | Chimney Temperature offset 2 (±0-20 °C or ±0-40 °F) | °C/°F | Write | |
| AV | 203 | Water_Level_Off2 | Water Level offset 2 (±0-20%) | % | Write | |
| BV | 201 | OverTemp_Cont_ON2 | Over temperature contact ON 2 | Write | 0=Normal, 1=Alarm | |
| BV | 202 | Bad_Fill_Tank2 | Defective filling tank 2 | Write | 0=Normal, 1=Alarm | |
| BV | 203 | Bad_Refill_Tank2 | Defective refill tank 2(too long) | Write | 0=Normal, 1=Alarm | |
| BV | 204 | Bad_Drain_Tank2 | Defective draining tank 2 | Write | 0=Normal, 1=Alarm | |
| BV | 205 | Bad_Burner_Fan2 | Defective Burner Fan 2 | Write | 0=Normal, 1=Alarm | |
| BV | 206 | Bad_Burner_Gas2 | Defective Burner Gas 2(Locked) | Write | 0=Normal, 1=Alarm | |
| BV | 207 | Input_Volt_Low2 | Input voltage 2 too low | Write | 0=Normal, 1=Alarm | |
| BV | 208 | Power_Fuse_Open2 | Power Fuse 2 open (24VAC) | Write | 0=Normal, 1=Alarm | |
| BV | 209 | Tank_Sens_Bad2 | Tank sensor 2 defective | Write | 0=Normal, 1=Alarm | |
| BV | 210 | Chim_Sens_Bad2 | Chimney sensor 2 defective | Write | 0=Normal, 1=Alarm | |
| BV | 211 | H2OLvl_Prb_Bad2 | Water level probe 2 defect | Write | 0=Normal, 1=Alarm | |
| BV | 212 | Foam_Sens_ON2 | Foam Sensor 2 ON | Write | 0=Normal, 1=Alarm | |
| BV | 213 | OverFlow_DripPan2 | Over Flow, Drip Pan 2 | Write | 0=Normal, 1=Alarm | |
| BV | 214 | Tank_Temp_Low2 | Tank temper. 2 Too low (freeze) | Write | 0=Normal, 1=Alarm | |
| BV | 215 | Tank_Temp_Hi2 | Tank temperature 2 too high | Write | 0=Normal, 1=Alarm | |
| BV | 216 | Chimney_Temp_Hi2 | Chimney temperature 2 too high | Write | 0=Normal, 1=Alarm | |
| BI | 201 | Burner_Valve2 | Burner Valve 2 | Read | 0=OFF, 1=ON | |
| BI | 202 | Burner_Fan2 | Burner Fan 2 | Read | 0=OFF, 1=ON | |
| BI | 203 | Fill_Tank2 | Fill Tank 2 | Read | 0=OFF, 1=ON | |
| BI | 204 | Drain_Tank2 | Drain Tank 2 | Read | 0=OFF, 1=ON | |
| BI | 205 | Water_Level_OK2 | Water Level 2 Okay | Read | 0=OFF, 1=ON | |
| BI | 206 | Modulation Stat2 | Modulation Status 2 | Read | 0=OFF, 1=ON | |
| MI | 201 | Unit_Size2 | Unit Size 2 | Read | 1=100Lbs/Hr, 2=150Lbs/Hr, 3=175Lbs/Hr, 4=200Lbs/Hr | |
| AI | 301 | Water_Temp3 | Water Temperature 3 (0-260 °C or 32-500 °F) | °C/°F | Read | |
| AI | 302 | Chimney_Temp3 | Chimney Temperature 3 (0-260 °C or 32-500 °F) | °C/°F | Read | |
| AI | 303 | Water_Level3 | Water level 3 (0-120%) | % | Read | |
| AI | 304 | Burner_Demand3 | Burner Demand 3 (0.0 - 100.0%) | % | Read | |
| AI | 305 | Op_Timer_Total3 | Operation Timer 3 (Total time) (1-1677215Hrs) | h | Read | |
| AI | 306 | Op_Timer3 | Operation Timer 3 (1-5000Hrs) | h | Read | |
| AI | 307 | Delay_Autodrain3 | Delay until Auto-drain 3 (1-100Hrs) | h | Read | |
| AI | 308 | Foam_Probe_Sensr3 | Foam Probe Sensor 3 (0-255) | Read | ||
| AI | 309 | Burner_Fan_Speed3 | Burner Fan Speed 3 (0-1000Hz) | Hz | Read | |
| AV | 301 | Water_Temp_Off3 | Water Temperature offset 3 (±0-20 °C or ±0-40 °F) | °C/°F | Write | |
| AV | 302 | Chimney_Temp_Off3 | Chimney Temperature offset 3 (±0-20 °C or ±0-40 °F) | °C/°F | Write | |
| AV | 303 | Water_Level_Off3 | Water Level offset 3 (±0-20%) | % | Write | |
| BV | 301 | OverTemp_Cont_ON3 | Over temperature contact ON 3 | Write | 0=Normal, 1=Alarm | |
| BV | 302 | Bad_Fill_Tank3 | Defective filling tank 3 | Write | 0=Normal, 1=Alarm | |
| BV | 303 | Bad_Refill_Tank3 | Defective refill tank 3(too long) | Write | 0=Normal, 1=Alarm | |
| BV | 304 | Bad_Drain_Tank3 | Defective draining tank 3 | Write | 0=Normal, 1=Alarm | |
| BV | 305 | Bad_Burner_Fan3 | Defective Burner Fan 3 | Write | 0=Normal, 1=Alarm | |
| BV | 306 | Bad_Burner_Gas3 | Defective Burner Gas 3(Locked) | Write | 0=Normal, 1=Alarm | |
| BV | 307 | Input_Volt_Low3 | Input voltage 3 too low | Write | 0=Normal, 1=Alarm | |
| BV | 308 | Power_Fuse_Open3 | Power Fuse 3 open (34VAC) | Write | 0=Normal, 1=Alarm | |
| BV | 309 | Tank_Sens_Bad3 | Tank sensor 3 defective | Write | 0=Normal, 1=Alarm | |
| BV | 310 | Chim_Sens_Bad3 | Chimney sensor 3 defective | Write | 0=Normal, 1=Alarm | |
| BV | 311 | H3OLvl_Prb_Bad3 | Water level probe 3 defect | Write | 0=Normal, 1=Alarm | |
| BV | 312 | Foam_Sens_ON3 | Foam Sensor 3 ON | Write | 0=Normal, 1=Alarm | |
| BV | 313 | OverFlow_DripPan3 | Over Flow, Drip Pan 3 | Write | 0=Normal, 1=Alarm | |
| BV | 314 | Tank_Temp_Low3 | Tank temper. 3 Too low (freeze) | Write | 0=Normal, 1=Alarm | |
| BV | 315 | Tank_Temp_Hi3 | Tank temperature 3 too high | Write | 0=Normal, 1=Alarm | |
| BV | 316 | Chimney_Temp_Hi3 | Chimney temperature 3 too high | Write | 0=Normal, 1=Alarm | |
| BI | 301 | Burner_Valve3 | Burner Valve 3 | Read | 0=OFF, 1=ON | |
| BI | 302 | Burner_Fan3 | Burner Fan 3 | Read | 0=OFF, 1=ON | |
| BI | 303 | Fill_Tank3 | Fill Tank 3 | Read | 0=OFF, 1=ON | |
| BI | 304 | Drain_Tank3 | Drain Tank 3 | Read | 0=OFF, 1=ON | |
| BI | 305 | Water_Level_OK3 | Water Level 3 Okay | Read | 0=OFF, 1=ON | |
| BI | 306 | Modulation Stat3 | Modulation Status 3 | Read | 0=OFF, 1=ON | |
| MI | 301 | Unit_Size3 | Unit Size 3 | Read | 1=100Lbs/Hr, 2=150Lbs/Hr, 3=175Lbs/Hr, 4=200Lbs/Hr | |
| AI | 401 | Water_Temp4 | Water Temperature 4 (0-260 °C or 32-500 °F) | °C/°F | Read | |
| AI | 402 | Chimney_Temp4 | Chimney Temperature 4 (0-260 °C or 32-500 °F) | °C/°F | Read | |
| AI | 403 | Water_Level4 | Water level 4 (0-120%) | % | Read | |
| AI | 404 | Burner_Demand4 | Burner Demand 4 (0.0 - 100.0%) | % | Read | |
| AI | 405 | Op_Timer_Total4 | Operation Timer 4 (Total time) (1-1677215Hrs) | h | Read | |
| AI | 406 | Op_Timer4 | Operation Timer 4 (1-5000Hrs) | h | Read | |
| AI | 407 | Delay_Autodrain4 | Delay until Auto-drain 4 (1-100Hrs) | h | Read | |
| AI | 408 | Foam_Probe_Sensr4 | Foam Probe Sensor 4 (0-255) | Read | ||
| AI | 409 | Burner_Fan_Speed4 | Burner Fan Speed 4 (0-1000Hz) | Hz | Read | |
| AV | 401 | Water_Temp_Off4 | Water Temperature offset 4 (±0-20 °C or ±0-40 °F) | °C/°F | Write | |
| AV | 402 | Chimney_Temp_Off4 | Chimney Temperature offset 4 (±0-20 °C or ±0-40 °F) | °C/°F | Write | |
| AV | 403 | Water_Level_Off4 | Water Level offset 4 (±0-20%) | % | Write | |
| BV | 401 | OverTemp_Cont_ON4 | Over temperature contact ON 4 | Write | 0=Normal, 1=Alarm | |
| BV | 402 | Bad_Fill_Tank4 | Defective filling tank 4 | Write | 0=Normal, 1=Alarm | |
| BV | 403 | Bad_Refill_Tank4 | Defective refill tank 4(too long) | Write | 0=Normal, 1=Alarm | |
| BV | 404 | Bad_Drain_Tank4 | Defective draining tank 4 | Write | 0=Normal, 1=Alarm | |
| BV | 405 | Bad_Burner_Fan4 | Defective Burner Fan 4 | Write | 0=Normal, 1=Alarm | |
| BV | 406 | Bad_Burner_Gas4 | Defective Burner Gas 4(Locked) | Write | 0=Normal, 1=Alarm | |
| BV | 407 | Input_Volt_Low4 | Input voltage 4 too low | Write | 0=Normal, 1=Alarm | |
| BV | 408 | Power_Fuse_Open4 | Power Fuse 4 open (44VAC) | Write | 0=Normal, 1=Alarm | |
| BV | 409 | Tank_Sens_Bad4 | Tank sensor 4 defective | Write | 0=Normal, 1=Alarm | |
| BV | 410 | Chim_Sens_Bad4 | Chimney sensor 4 defective | Write | 0=Normal, 1=Alarm | |
| BV | 411 | H4OLvl_Prb_Bad4 | Water level probe 4 defect | Write | 0=Normal, 1=Alarm | |
| BV | 412 | Foam_Sens_ON4 | Foam Sensor 4 ON | Write | 0=Normal, 1=Alarm | |
| BV | 414 | OverFlow_DripPan4 | Over Flow, Drip Pan 4 | Write | 0=Normal, 1=Alarm | |
| BV | 414 | Tank_Temp_Low4 | Tank temper. 4 Too low (freeze) | Write | 0=Normal, 1=Alarm | |
| BV | 415 | Tank_Temp_Hi4 | Tank temperature 4 too high | Write | 0=Normal, 1=Alarm | |
| BV | 416 | Chimney_Temp_Hi4 | Chimney temperature 4 too high | Write | 0=Normal, 1=Alarm | |
| BI | 401 | Burner_Valve4 | Burner Valve 4 | Read | 0=OFF, 1=ON | |
| BI | 402 | Burner_Fan4 | Burner Fan 4 | Read | 0=OFF, 1=ON | |
| BI | 403 | Fill_Tank4 | Fill Tank 4 | Read | 0=OFF, 1=ON | |
| BI | 404 | Drain_Tank4 | Drain Tank 4 | Read | 0=OFF, 1=ON | |
| BI | 405 | Water_Level_OK4 | Water Level 4 Okay | Read | 0=OFF, 1=ON | |
| BI | 406 | Modulation Stat4 | Modulation Status 4 | Read | 0=OFF, 1=ON | |
| MI | 401 | Unit_Size4 | Unit Size 4 | Read | 1=100Lbs/Hr, 2=150Lbs/Hr, 3=175Lbs/Hr, 4=200Lbs/Hr |
No points match these filters.
Object ID lookup: Neptronic SKG gas-fired humidifier with NEPICSKG point IDs by name
AI1Humidity_OutAV1Humidity_DemandAV2Room_HumidityAV3Room_Humidity_OffAV4Duct_HumidityAV5Duct_Humidity_OffAV6Outside_TempAV7Lock_On_CapacityAV8Max_Output_LimitAV9Drain_DelayAV10Service_DelayAV11End_Season_DelayAV12PID_Loop_KPAV13PID_Loop_KIAV14PID_Loop_KDAV15Ctl_BandAV16Ctl_SPAV17Extern_SP_MinAV18Extern_SP_MaxAV19Duct_Hum_HiLim_SPAV20Min_ON_Time_FanAV21Min_H2O_TempAV22Antifreeze_TempAV23Analog_Ctl_In_LoAV24Analog_Ctl_In_HiAV25Analog_Hum_In_LoAV26Analog_Hum_In_HiAV27Analog_Duct_In_LoAV28Analog_Duct_In_HiBI1Power_StatusBI2Humidity_DemandBI3Manual_DrainBI4Alrm_Not_CriticalBI5Alarm_CriticalBI6End_of_Season_DlyBI7Fan_Proof_StatusBI8HiLimit_StatusBI9InterlockBI10Thermal_Fuse_ExtBI11Thermal_Fuse_IntBI12Interlock_In_OpenBI13High_Hum_In_DuctBI14Input_Voltage_LowBI15Thermal_Fuse_OpenBI16Slave_Comm_LostBI17Hum_Clean_StartBI18Hum_Ex_Svc_TimeBV1Temperature_UnitBV2Outside_Temp_CompBV3Alarm_BeepBV4Demand_SP_TypeBV5Humidity_In_TypeBV6HiLim_Hum_In_TypeMV1Ctl_ModeMV2Operation_ModeMV3Unit_Display_LangMV4SP_SourceMV5Room_Hum_SourceMV6Duct_Hum_SourceAI101Water_Temp1AI102Chimney_Temp1AI103Water_Level1AI104Burner_Demand1AI105Op_Timer_Total1AI106Op_Timer1AI107Delay_Autodrain1AI108Foam_Probe_Sensr1AI109Burner_Fan_Speed1AV101Water_Temp_Off1AV102Chimney_Temp_Off1AV103Water_Level_Off1BV101OverTemp_Cont_ON1BV102Bad_Fill_Tank1BV103Bad_Refill_Tank1BV104Bad_Drain_Tank1BV105Bad_Burner_Fan1BV106Bad_Burner_Gas1BV107Input_Volt_Low1BV108Power_Fuse_Open1BV109Tank_Sens_Bad1BV110Chim_Sens_Bad1BV111H2OLvl_Prb_Bad1BV112Foam_Sens_ON1BV113OverFlow_DripPan1BV114Tank_Temp_Low1BV115Tank_Temp_Hi1BV116Chimney_Temp_Hi1BI101Burner_Valve1BI102Burner_Fan1BI103Fill_Tank1BI104Drain_Tank1BI105Water_Level_OK1BI106Modulation Stat1MI101Unit_Size1AI201Water_Temp2AI202Chimney_Temp2AI203Water_Level2AI204Burner_Demand2AI205Op_Timer_Total2AI206Op_Timer2AI207Delay_Autodrain2AI208Foam_Probe_Sensr2AI209Burner_Fan_Speed2AV201Water_Temp_Off2AV202Chimney_Temp_Off2AV203Water_Level_Off2BV201OverTemp_Cont_ON2BV202Bad_Fill_Tank2BV203Bad_Refill_Tank2BV204Bad_Drain_Tank2BV205Bad_Burner_Fan2BV206Bad_Burner_Gas2BV207Input_Volt_Low2BV208Power_Fuse_Open2BV209Tank_Sens_Bad2BV210Chim_Sens_Bad2BV211H2OLvl_Prb_Bad2BV212Foam_Sens_ON2BV213OverFlow_DripPan2BV214Tank_Temp_Low2BV215Tank_Temp_Hi2BV216Chimney_Temp_Hi2BI201Burner_Valve2BI202Burner_Fan2BI203Fill_Tank2BI204Drain_Tank2BI205Water_Level_OK2BI206Modulation Stat2MI201Unit_Size2AI301Water_Temp3AI302Chimney_Temp3AI303Water_Level3AI304Burner_Demand3AI305Op_Timer_Total3AI306Op_Timer3AI307Delay_Autodrain3AI308Foam_Probe_Sensr3AI309Burner_Fan_Speed3AV301Water_Temp_Off3AV302Chimney_Temp_Off3AV303Water_Level_Off3BV301OverTemp_Cont_ON3BV302Bad_Fill_Tank3BV303Bad_Refill_Tank3BV304Bad_Drain_Tank3BV305Bad_Burner_Fan3BV306Bad_Burner_Gas3BV307Input_Volt_Low3BV308Power_Fuse_Open3BV309Tank_Sens_Bad3BV310Chim_Sens_Bad3BV311H3OLvl_Prb_Bad3BV312Foam_Sens_ON3BV313OverFlow_DripPan3BV314Tank_Temp_Low3BV315Tank_Temp_Hi3BV316Chimney_Temp_Hi3BI301Burner_Valve3BI302Burner_Fan3BI303Fill_Tank3BI304Drain_Tank3BI305Water_Level_OK3BI306Modulation Stat3MI301Unit_Size3AI401Water_Temp4AI402Chimney_Temp4AI403Water_Level4AI404Burner_Demand4AI405Op_Timer_Total4AI406Op_Timer4AI407Delay_Autodrain4AI408Foam_Probe_Sensr4AI409Burner_Fan_Speed4AV401Water_Temp_Off4AV402Chimney_Temp_Off4AV403Water_Level_Off4BV401OverTemp_Cont_ON4BV402Bad_Fill_Tank4BV403Bad_Refill_Tank4BV404Bad_Drain_Tank4BV405Bad_Burner_Fan4BV406Bad_Burner_Gas4BV407Input_Volt_Low4BV408Power_Fuse_Open4BV409Tank_Sens_Bad4BV410Chim_Sens_Bad4BV411H4OLvl_Prb_Bad4BV412Foam_Sens_ON4BV414OverFlow_DripPan4BV414Tank_Temp_Low4BV415Tank_Temp_Hi4BV416Chimney_Temp_Hi4BI401Burner_Valve4BI402Burner_Fan4BI403Fill_Tank4BI404Drain_Tank4BI405Water_Level_OK4BI406Modulation Stat4MI401Unit_Size4
Integration notes
- Objects for tanks 2-4 (instances 201-499) exist only on units with that many tanks; the guide gives 95 objects for one tank up to 200 for four.
- The tank 4 table prints OverFlow_DripPan4 as BV 414, the same instance as Tank_Temp_Low4 (it is probably BV 413); both rows are kept as printed.
- Typos kept as printed: H3OLvl_Prb_Bad3 / H4OLvl_Prb_Bad4 and the space in "Modulation Stat1-4".
- MSV 5 Room_Hum_Source is printed without the W flag the other selectors have.
- Access is from the W? column; the tank alarm BVs are printed as writable. The module does not send BACnet event notifications.
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 SKG (legacy, pre-SKG4) gas-fired humidifier with NEPICSKG BACnet module 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 Neptronic SKG (legacy, pre-SKG4) gas-fired humidifier with NEPICSKG BACnet module
How many BACnet points does the Neptronic SKG (legacy, pre-SKG4) gas-fired humidifier with NEPICSKG BACnet module have?
This list has 199 BACnet objects: 37 analog inputs, 40 analog values, 42 binary inputs, 70 binary values, 4 multi-state inputs, 6 multi-state values. The exact set on a given unit depends on its firmware, installed options and configuration.
Which Neptronic SKG (legacy, pre-SKG4) gas-fired humidifier with NEPICSKG BACnet module BACnet points are writable?
115 of the 199 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 Neptronic SKG (legacy, pre-SKG4) gas-fired humidifier with NEPICSKG BACnet module BACnet documentation?
The source is Gas Fired Humidifier SKG Series - BACnet Communication Module User Guide (SKG-BACNET), revision Rev 060803, published free by Neptronic at https://www.neptronic.com/Humidifiers/PDF/SKG3000/SKG-bacnet-user-guide.pdf.
What are the minimum BACnet points to integrate the Neptronic SKG (legacy, pre-SKG4) gas-fired humidifier with NEPICSKG BACnet module?
Start with MV 2 Operation_Mode (Unit off, on or drain); MV 1 Ctl_Mode (Control mode; 3 = demand from BACnet); AV 1 Humidity_Demand (Humidity demand from the BMS, %); AV 16 Ctl_SP (Humidity setpoint for internal PID, %RH); AV 2 Room_Humidity (Room RH from the BMS (remote source)); BI 1 Power_Status (Unit power on); AI 1 Humidity_Out (Humidifier output, %); BI 4 Alrm_Not_Critical (Non-critical alarm, unit still running); BI 5 Alarm_Critical (Critical alarm, unit stopped).
How do I enable BMS control of the Neptronic SKG (legacy, pre-SKG4) gas-fired humidifier with NEPICSKG BACnet module?
MSV 2 Operation_Mode sets the unit off (1), on (2) or to drain (3). MSV 1 Ctl_Mode picks the demand source: 1 = analog input 1, 2 = internal PID, 3 = remote demand over BACnet.
Can the BMS supply sensor values to the Neptronic SKG (legacy, pre-SKG4) gas-fired humidifier with NEPICSKG BACnet module?
With MSV 5 Room_Hum_Source = 2 and MSV 6 Duct_Hum_Source = 3 (remote) the BMS writes AV 2 Room_Humidity and AV 4 Duct_Humidity; MSV 4 SP_Source = 3 takes the setpoint from BACnet.
How do I check these points on the real SKG (legacy, pre-SKG4) gas-fired humidifier with NEPICSKG BACnet module?
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 Neptronic BACnet points lists
- Room / indoor air quality controller (temperature, humidity, CO2, VOC)
Neptronic AROB universal room / IAQ controller
Neptronic AROB room controllers measuring temperature, humidity, CO2 and VOC, with 2 analog and 2 binary outputs.
Also known as: AROB, AROB24, Neptronic AROB, IAQ controller - Make-up air unit (electric heat)
Neptronic CMU Compact Make-up Air Unit
Neptronic CMU compact make-up air units with electric heating, EC fan, damper and optional exhaust fan outputs.
Also known as: CMU, Neptronic CMU - Fan coil unit controller
Neptronic EFCB Series Fan Coil Controller
Neptronic EFCB fan coil controllers (24, 120 or 240 Vac, 2 or 4 relays) for 2-pipe and 4-pipe fan coils with TFL/TDF room sensors.
Also known as: EFCB, EFCB10TU2, EFCB10TU4, EFCB11TU2, EFCB11TU4, EFCB12TU2, EFCB12TU4 - Fan coil unit controller
Neptronic EFCB-OE1 Series Fan Coil Controller
Neptronic EFCB-OE1 fan coil controllers (24 or 240 Vac, 0, 2 or 4 relays), an OEM variant of the EFCB series.
Also known as: EFCB-OE1, EFCB10T-OE1, EFCB12T-OE1, EFCB12TU2-OE1, EFCB12TU4-OE1 - VAV terminal unit controller
Neptronic EVCB14N Series VAV Controller
Neptronic EVCB14N networkable VAV controllers with integrated damper actuator, pressure-independent or pressure-dependent, with 0-4 triac outputs.
Also known as: EVCB14N, EVCB14NIT0S, EVCB14NIT2S, EVCB14NIT4S, EVCB14NDT4S, EVCB14NIT0SF, EVCB14NIT4SF - VAV terminal unit controller
Neptronic EVCB14NxT4X VAV Controller (external motor)
Neptronic EVCB14N VAV controllers with four triac outputs that drive an external damper motor, pressure independent (IT4X) or dependent (DT4X).
Also known as: EVCB14NxT4X, EVCB14NIT4X, EVCB14NDT4X - VAV terminal unit controller
Neptronic EVCB44N Series VAV Controller
Neptronic EVCB44N VAV controllers without triac outputs, pressure independent (IT0S) or pressure dependent (DT0S).
Also known as: EVCB44N, EVCB44NIT0S, EVCB44NDT0S - Dual duct VAV terminal controller
Neptronic EVCBM Dual Duct VAV Controller
Neptronic EVCBM master controller used on dual duct terminals, with a second (slave) airflow channel for the other duct.
Also known as: EVCBM, EVCBM Dual Duct, EVCB dual duct - Electric duct heater / terminal reheat controller
Neptronic HECB electric duct heater controller
Neptronic electric duct heaters fitted with the HECB intelligent controller (staged and SSR, with optional EAS airflow sensing).
Also known as: HECB, HEC, Neptronic HECB, electric duct heater controller - Electric steam humidifier
Neptronic SK300 / SKE (legacy) Steam Humidifier with NEPIC BACnet module
Legacy Neptronic SK300 and SKE electric steam humidifiers fitted with the NEPIC BACnet MS/TP communication module.
Also known as: SK300, SKE, Neptronic SK300, Neptronic SKE, NEPIC, SK300-BACNET, SKE-BACNET - Steam humidifier valve controller
Neptronic SKDESC-xB
Neptronic SKDESC-xB electronic controllers for steam-to-steam / direct steam injection humidifier valves (ESCJx jacketed, ESCMx models).
Also known as: SKDESC, SKDESCxB, ESCJx, ESCMx, Electronic Steam Controller - Electric steam humidifier
Neptronic SKE4
Neptronic SKE4 electric (heating element) steam humidifiers, indoor and outdoor versions.
Also known as: SKE4 electric steam humidifier, SKE4-N, SKE4-E, SKE4 BACnet - Gas-fired steam humidifier
Neptronic SKG4
Neptronic SKG4 gas-fired steam humidifiers with up to four humidifier modules.
Also known as: SKG4 gas fired humidifier, SKG4-N, SKG4-E, SKG4 BACnet - High-pressure atomising humidifier zone controller
Neptronic SKH (legacy, pre-SKH4) high pressure atomiser - SKH EZC zone controller
EZC zone controllers of older Neptronic SKH high pressure atomising humidifiers, before the SKH4; each zone is its own BACnet device.
Also known as: SKH EZC, EZC, Neptronic SKH zone controller, SKH-BACnet Guide-210104 - High-pressure atomising humidifier
Neptronic SKH (legacy, pre-SKH4) high pressure atomiser - SKH pump station
The SKH pump station (master board) of older Neptronic SKH high pressure atomising humidifiers, before the SKH4.
Also known as: SKH, Neptronic SKH, SKH high pressure atomiser, SKH-BACnet Guide-210104 - High-pressure atomizing humidifier / cooler
Neptronic SKH4
Neptronic SKH4 high-pressure water atomizing humidifiers and evaporative coolers with up to six zones (A-F).
Also known as: SKH4 high-pressure atomizer, SKH4 BACnet - Reverse osmosis water treatment unit
Neptronic SKRO
Neptronic SKRO reverse osmosis water treatment units feeding humidifiers.
Also known as: SKRO reverse osmosis, SKRO BACnet - Steam-to-steam humidifier
Neptronic SKS4
Neptronic SKS4 steam-to-steam (boiler steam heated) humidifiers.
Also known as: SKS4 steam to steam humidifier, SKS4 BACnet - Evaporative humidifier
Neptronic SKV
Neptronic SKV evaporative (media) humidifiers with up to four modules.
Also known as: SKV evaporative humidifier, SKV BACnet - Evaporative cooler / humidifier
Neptronic SKVF
Neptronic SKVF series evaporative coolers (also used for humidification).
Also known as: SKVF evaporative cooler, SKVF Series, SKVF BACnet - Fan coil / zone thermostat controller
Neptronic TFxB Series Thermostat Controller
Neptronic TFxB24 communicating thermostats for 2-pipe and 4-pipe fan coils and zone heating/cooling, including the humidity (TFHB) and OE variants.
Also known as: TFCB24F3XYZ1, TFCB24F3XY2, TFHB24F3XYZ1, TFHB24F3XYZ2, TFCB24P3-OE1, TFHB24P3-OE1, TFHB24P3-OE2, TFxB24 - Zone thermostat controller (VAV / fan coil)
Neptronic TROB24 thermostat controller
Neptronic TROB24 communicating thermostats with universal inputs, analog outputs and triac (on/off, pulsing or floating) outputs.
Also known as: TROB24, TROB, TROB24T4, Neptronic TROB - Fan coil / zone thermostat controller
Neptronic TSUB universal wall-mount controller
Neptronic TSUB universal wall-mount controllers for fan coils, heat pumps and zone heating/cooling.
Also known as: TSUB, TSUB24, Neptronic TSUB - Fan coil / zone thermostat controller
Neptronic TUCB / TUHB universal controller (TUxB24C6X2)
Neptronic TUCB (cooling/heating) and TUHB (with humidity) universal room controllers, model TUxB24C6X2.
Also known as: TUCB, TUHB, TUxB24C6X2, TUCB24C6X2, TUHB24C6X2 - Fan coil / zone thermostat controller
Neptronic TUUB universal wall-mount controller
Neptronic TUUB universal wall-mount controllers for fan coils, heat pumps, VFDs and zone heating/cooling.
Also known as: TUUB, TUUB24, Neptronic TUUB
Source: Gas Fired Humidifier SKG Series - BACnet Communication Module User Guide · SKG-BACNET · rev. Rev 060803. Object names, instances and units are reproduced as published; descriptions are our own.