Neptronic SKG Series User manual

Gas Fired Humidifier
SKG Series
BACnet® Communication Module
User Guide
SKG-BACNET – Rev.: 060803

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BACnet® Communication Module User Guide
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Table of content
Table of content.....................................................................................................................1
Introduction & BACnet® Requirements...............................................................................2
Introduction...........................................................................................................................2
BACnet® Requirements .......................................................................................................2
Device Object.........................................................................................................................3
Objects ...................................................................................................................................4
SKG Humidifier Object Table................................................................................................8
Configuration.......................................................................................................................19
Personal notes.....................................................................................................................23
Other related documents:
1. Installation instructions
2. Start up check list
3. Wiring diagram
4. Service and troubleshooting guide

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Introduction & BACnet® Requirements
Introduction
This document provides a Users Guide for using the NEP PIC Communications Module for SKG Humidifiers
(NEPICSKG). This product provides a BACnet ® network interface between BACnet client devices and NEP
SKG Humidifier Series devices, specifically for SKG models. NEPICSKG uses the BACnet Master Slave/Token
Passing (MS/TP) protocol at the BACnet MAC layer.
This document assumes you’re familiar with BACnet and BACnet terminology.
BACnet® Requirements
Performance
The NEPICSKG uses a synchronous implementation for BACnet messages. Each BACnet confirmed service
request is answered as quickly as possible without using Reply Postponed. In particular, MS/TP implementation
performs within Tusage_delay of 15ms in order to assure Tusage_timeout values within 20ms.
Support for MS/TP
The NEPICSKG supports a Full Master Node state machine for MS/TP. Max_Master and the MS/TP MAC
address shall be configurable through WriteProperty service to the device object. A default MAC address of 254
shall be recognized when a configuration dip switch is set to configure mode. Two other dip switches shall
determine MS/TP baud rate 9600, 19200, 38400, and 76800. When in the configure mode WriteProperty
service requests may be directed to MAC address 254 using the wildcard Device instance (4194303
decimal/0x3FFFFF hex) as a means of configuring all other parameters for the device. Also, when in the
configuration mode the MS/TP MAC address and the Device Instance shall be configurable through the Unit’s
Keypad.
BIBB Support
The NEPICSKG generally behaves as a B-ASC type profile server. The following specific BIBBs are supported
per their relevant definitions in Annex K to BACnet:
DS-RP-B, DS-WP-B, DM-DDB-B, DM-DOB-B, DM-DCC-B
Object Support (in general)
The NEPICSKG supports a table-based fixed list of BACnet-visible values which appear as Present_Values of
various BACnet standard object types, in addition to a Device object.
Alarms
Although the NEPICSKG supports the ability to indicate various alarm conditions through value changes in
properties of several of its objects, it does not generate BACnet Event Notifications.

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Device Object
The following table lists all the BACnet properties supported for the device object. W? indicates if the property is
writable using the BACnet WriteProperty service.
Device
property value W?
Object_Identifier programmable where the instance part of the
Object_Identifier is in the range of 0-4194302. The
device instance must be unique system-wide. The
default value for the device instance=153000
(Vendor_Identifier*1000)
W
Object_Name programmable up to 32 characters. The device
name must be unique system-wide. The default
value= "NEPSKGHumidifier153000" where 153000
is the Vendor_Identifier*1000
W
Object_Type 8
System_Status always operational
Vendor_Identifier always 153
Vendor_Name always “National Environmental Products Ltd
Model_Name “SKG3” for example
Status_Flags If the fault bit is set, it indicates that the
Present_Value is unavailable and is unreliable
Firmware_Revision currently “1.00”
Application_Software_Version currently “1.00”
Protocol_Version always 1
Protocol_Revision always 2
Max_APDU_Length_Accepted always 107
Segmentation_Supported always none
APDU_Timeout always 0
Number_of_APDU_Retries always 0
Protocol_Services_Supported always 0x00 0x09 0x40 0x00 0xE0 (i.e. a bitstring
in BACnet order
Protocol_Object_Types_Supported always 0xB4 0x84 0x10 0x00 (i.e. a bitstring in
BACnet order
Object_List per the standard. Because of restrictions on the
size of the transmit buffers, the entire Object_List
cannot be returned at once, rather the Object_List
must be read, one-at-a-time
Local_Time per the standard, if the unit supports a RTC
Local_Date per the standard, if the unit supports a RTC
Device_Address_Binding always empty
Max_Master programmable in the range of 0-127. Default
value=127 W
Max_Info_Frames always 1
Proprietary property #1000 programmable. This proprietary property
represents the MS/TP MAC address in the range
of (0-254). Values 128 to 254 represent MS/TP
non-token-passing slave devices. Default value=0
W

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Objects
A complete list of all BACnet objects for the NEPICSKG are listed in the following section. There are a total of
between 94 and 199 BACnet objects per NEPICSKG consisting of the following types:
Common for all SKG Models:
•1 Device
•1 Analog Input (AI)
•28 Analog Values (AV)
•18 Binary Inputs (BI)
•6 Binary Values (BV)
•6 Multistate Values (MSV)
For each Tank (minimum 1, maximum 4):
•9 Analog Inputs (AI)
•Analog Values (AV)
•6 Binary Inputs (BI)
•16 Binary Values (BV)
•1 Multistate Input (MSI)
So, the number of objects vs. the number of Tanks are listed in the following table:
Number of Tanks Number of Objects
1 95
2 130
3 165
4 200
The Device Object has already been described. The following tables list all the BACnet properties supported for
each object type. Most of the properties are locked in. The exceptions are Present_Values, which represent the
dynamic operating values of the device, and the Status_Flags, Event_States and Reliabilitys which reflect the
availability of the Present_Values. Unless otherwise specified, properties are not changeable.

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Objects
Analog Inputs
property value W?
Object_Identifier see Object Table
Object_Name see Object Table
Object_Type 0
Present_Value see Object Table
Max_Present_Value see Object Table
Min_Present_Value see Object Table
Description see Object Table
Status_Flags If the fault bit is set, it indicates that the Present_Value is
unavailable and is unreliable
Event_State If the fault bit of the Status_Flags is set, this property’s value is
fault, otherwise it’s normal
Reliability If the fault bit of the Status_Flags is set, this property’s value is
unreliable_other, otherwise it’s no_fault_detected
Out_of_Service Always false
Units see Object Table
Analog Values
property value W?
Object_Identifier see Object Table
Object_Name see Object Table
Object_Type 2
Present_Value see Object Table W
Max_Present_Value see Object Table
Min_Present_Value see Object Table
Description see Object Table
Status_Flags If the fault bit is set, it indicates that the Present_Value is
unavailable and is unreliable
Event_State If the fault bit of the Status_Flags is set, this property’s value is
fault, otherwise it’s normal
Reliability If the fault bit of the Status_Flags is set, this property’s value is
unreliable_other, otherwise it’s no_fault_detected
Out_of_Service Always false
Units see Object Table

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Objects
Binary Inputs
property value W?
Object_Identifier see Object Table
Object_Name see Object Table
Object_Type 3
Present_Value see Object Table
Description see Object Table
Status_Flags If the fault bit is set, it indicates that the Present_Value is
unavailable and is unreliable
Event_State If the fault bit of the Status_Flags is set, this property’s value is
fault, otherwise it’s normal
Reliability If the fault bit of the Status_Flags is set, this property’s value is
unreliable_other, otherwise it’s no_fault_detected
Out_of_Service Always normal
Polarity see Object Table
Active_Text see Object Table
Inactive_Text see Object Table
Binary Values
property value W?
Object_Identifier see Object Table
Object_Name see Object Table
Object_Type 5
Present_Value see Object Table W
Description see Object Table
Status_Flags If the fault bit is set, it indicates that the Present_Value is
unavailable and is unreliable
Event_State If the fault bit of the Status_Flags is set, this property’s value is
fault, otherwise it’s normal
Reliability If the fault bit of the Status_Flags is set, this property’s value is
unreliable_other, otherwise it’s no_fault_detected
Out_of_Service Always normal
Polarity see Object Table
Active_Text see Object Table
Inactive_Text see Object Table

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Objects
Multistate Inputs
property value W?
Object_Identifier see Object Table
Object_Name see Object Table
Object_Type 13
Present_Value see Object Table
Description see Object Table
Status_Flags If the fault bit is set, it indicates that the Present_Value is
unavailable and is unreliable
Event_State If the fault bit of the Status_Flags is set, this property’s value is
fault, otherwise it’s normal
Reliability If the fault bit of the Status_Flags is set, this property’s value is
unreliable_other, otherwise it’s no_fault_detected
Out_of_Service Always normal
Number_of_States see Object Table
Multistate Values
property value W?
Object_Identifier see Object Table
Object_Name see Object Table
Object_Type 19
Present_Value see Object Table W
Description see Object Table
Status_Flags If the fault bit is set, it indicates that the Present_Value is
unavailable and is unreliable
Event_State If the fault bit of the Status_Flags is set, this property’s value is
fault, otherwise it’s normal
Reliability If the fault bit of the Status_Flags is set, this property’s value is
unreliable_other, otherwise it’s no_fault_detected
Out_of_Service Always normal
Number_of_States see Object Table

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SKG Humidifier Object Table
The SKG Humidifier use the following BACnet object table. The type is the BACnet Object type, the instance is
the BACnet Object instance. W? indicates whether the Present_Value property is writable. Together the type
and instance form the BACnet Object_Identifier for an object according to the following C-language algorithm:
•object_identifier=(unsigned long)((unsigned long)type<<22)+instance
Object instances are assigned according to the following scheme:
•The Object instance for the Device Object is 153000 by default. This value can be reprogrammed from
between 0 and 4194302 as needed to insure uniqueness system-wide
•For the Properties that are Common for all SKG Models, the Object instances range from 1 to 99 as
needed.
•For the Tank Properties, the Object instances range from 101 to 199 for Tank 1, 201 to 299 for Tank 2,
301 to 399 for Tank 3 and 401 to 499 for Tank 4 as needed.
Common for all SKG Models:
type inst Object_Name Description range of Present_Value W?
AI 1 Humidity_Out Humidity Output 0-100 %RH
type inst Object_Name Description range of Present_Value W?
AV 1 Humidity_Demand Humidity Demand 0-100 %RH W
AV 2 Room_Humidity Room Humidity 0-100 %RH W
AV 3 Room_Humidity_Off Room Humidity offset ±0-10.0 %RH W
AV 4 Duct_Humidity Duct Humidity 0-100 %RH W
AV 5 Duct_Humidity_Off Duct Humidity offset ±0-10.0 %RH W
AV 6 Outside_Temp Outside Temperature -40 - 40 °C or -40 - 104
°F W
AV 7 Lock_On_Capacity Lock On capacity 10-100% W
AV 8 Max_Output_Limit Maximum output limit 10-100% W
AV 9 Drain_Delay Drain Delay 1-100Hrs W
AV 10 Service_Delay Service Delay 1-5000Hrs W
AV 11 End_Season_Delay End of season delay 1-250Hrs W
AV 12 PID_Loop_KP PID Loop gain KP 0-255 W
AV 13 PID_Loop_KI PID Loop gain KI 0-255 W
AV 14 PID_Loop_KD PID Loop gain KD 0-255 W
AV 15 Ctl_Band Control band
0-20.0% (0..200) W
AV 16 Ctl_SP Control set point 0-100%RH W
AV 17 Extern_SP_Min External setpoint minimum 0-100%RH W
AV 18 Extern_SP_Max External setpoint
maximum 0-100%RH W
AV 19 Duct_Hum_HiLim_SP Duct hum. high limit set
point 50-100%RH W
AV 20 Min_ON_Time_Fan Minimum ON time for fan 2-20 minutes W
AV 21 Min_H2O_Temp Min. water temp. in ON
mode 50-90 °C or 122-194 °F (0 -> Mode is Off) W
AV 22 Antifreeze_Temp Anti-freeze mode
temperature 7-12 °C or 44-54 °F (0 -> Mode is Off) W
AV 23 Analog_Ctl_In_Lo Analog Control input Lo
Limit 0-10.00VDC W
AV 24 Analog_Ctl_In_Hi Analog Control input Hi
Limit 0-10.00VDC W
AV 25 Analog_Hum_In_Lo Analog Humidity input Lo
Limit 0-10.00VDC W
AV 26 Analog_Hum_In_Hi Analog Humidity input Hi
Limit 0-10.00VDC W
AV 27 Analog_Duct_In_Lo Analog Duct input Lo Limit 0-10.00VDC W
AV 28 Analog_Duct_In_Hi Analog Duct input Hi Limit 0-10.00VDC W

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SKG Humidifier Object Table
Common for all SKG Models:
type inst Object_Name Description range of Present_Value W?
- - - Actual Operating Status -
BI 1 Power_Status Power Status 0=OFF, 1=ON
BI 2 Humidity_Demand Humidity Demand 0=NO, 1=YES
BI 3 Manual_Drain Manual Drain 0=NO, 1=YES
BI 4 Alrm_Not_Critical Alarm not critical (unit
running) 0=NO, 1=YES
BI 5 Alarm_Critical Alarm critical (unit not
running) 0=NO, 1=YES
BI 6 End_of_Season_Dly End of Season Delay 0=NO, 1=YES
- - - Misc. Input Status -
BI 7 Fan_Proof_Status Fan proof Status 0=OFF, 1=ON
BI 8 HiLimit_Status Hi-Limit Status 0=OFF, 1=ON
BI 9 Interlock Interlock 0=OFF, 1=ON
BI 10 Thermal_Fuse_Ext Thermal fuse (external
24VAC) 0=OFF, 1=ON
BI 11 Thermal_Fuse_Int Thermal fuse (internal
24VDC) 0=OFF, 1=ON
-- -- -- Alarm main board: -
BI 12 Interlock_In_Open Interlock input open 0=Normal, 1=Alarm
BI 13 High_Hum_In_Duct High humidity level in the
duct 0=Normal, 1=Alarm
BI 14 Input_Voltage_Low Input voltage too low 0=Normal, 1=Alarm
BI 15 Thermal_Fuse_Open Thermal Fuse open
(24VAC) 0=Normal, 1=Alarm
BI 16 Slave_Comm_Lost Comm lost with slave
board 0=Normal, 1=Alarm
BI 17 Hum_Clean_Start Humidifier started cleaning
period 0=Normal, 1=Alarm
BI 18 Hum_Ex_Svc_Time Humidifier exceeded
service time 0=Normal, 1=Alarm
type inst Object_Name Description range of Present_Value W?
-- -- -- System Options: -
BV 1 Temperature_Unit Temperature Unit 0=Celcius, 1=Fahrenheit W
BV 2 Outside_Temp_Comp Outside Temp.
Compensation 0=OFF, 1=ON W
BV 3 Alarm_Beep Alarm Beep 0=OFF, 1=ON W
- - - Analog Control Input Type -
BV 4 Demand_SP_Type Demand/Set point type 0=Voltage, 1=Current W
BV 5 Humidity_In_Type Humidity input type 0=Voltage, 1=Current W
BV 6 HiLim_Hum_In_Type Hi-limit humidity input type 0=Voltage, 1=Current W

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SKG Humidifier Object Table
Common for all SKG Models:
type inst Object_Name Description range of Present_Value W?
MSV 1 Ctl_Mode Control Mode 1=Demand from analog
input 1 (default)
2=Internal PID loop
calculation
3=Demand from remote
communication port (e.g.
BACnet)
W
MSV 2 Operation_Mode Operation Mode 1=Set unit Off
2=Set unit On
3=Set unit in drain mode
W
MSV 3 Unit_Display_Lang Unit Display Language 1=English (Default)
2=French
3=Spanish
W
MSV 4 SP_Source Setpoint Source 1=Local analog input 1
2=Local Internal digital
value
3=Remote from
communication port (e.g.
BACnet)
W
MSV 5 Room_Hum_Source Room Humidity Source 1=Local analog input 2
(default)
2=Remote from
communication port (e.g.
BACnet)
MSV 6 Duct_Hum_Source Duct Humidity Source 1=Not used
2=Local analog input 3
3=Remote from
communication port (e.g.
BACnet)
W

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SKG Humidifier Object Table
For tank 1:
type inst Object_Name Description range of Present_Value W?
AI 101 Water_Temp1 Water Temperature 1 0-260 °C or 32-500 °F
AI 102 Chimney_Temp1 Chimney Temperature 1 0-260 °C or 32-500 °F
AI 103 Water_Level1 Water level 1 0-120%
AI 104 Burner_Demand1 Burner Demand 1 0.0 - 100.0%
AI 105 Op_Timer_Total1 Operation Timer 1 (Total
time) 1-1677215Hrs
AI 106 Op_Timer1 Operation Timer 1 1-5000Hrs
AI 107 Delay_Autodrain1 Delay until Auto-drain 1 1-100Hrs
AI 108 Foam_Probe_Sensr1 Foam Probe Sensor 1 0-255
AI 109 Burner_Fan_Speed1 Burner Fan Speed 1 0-1000Hz
type inst Object_Name Description range of Present_Value W?
AV 101 Water_Temp_Off1 Water Temperature offset
1 ±0-20 °C or ±0-40 °F W
AV 102 Chimney_Temp_Off1 Chimney Temperature
offset 1 ±0-20 °C or ±0-40 °F W
AV 103 Water_Level_Off1 Water Level offset 1 ±0-20% W
type inst Object_Name Description range of Present_Value W?
-- -- -- Alarm 1: -
BV 101 OverTemp_Cont_ON1 Over temperature contact
ON 1 0=Normal, 1=Alarm W
BV 102 Bad_Fill_Tank1 Defective filling tank 1 0=Normal, 1=Alarm W
BV 103 Bad_Refill_Tank1 Defective refill tank 1(too
long) 0=Normal, 1=Alarm W
BV 104 Bad_Drain_Tank1 Defective draining tank 1 0=Normal, 1=Alarm W
BV 105 Bad_Burner_Fan1 Defective Burner Fan 1 0=Normal, 1=Alarm W
BV 106 Bad_Burner_Gas1 Defective Burner Gas
1(Locked) 0=Normal, 1=Alarm W
BV 107 Input_Volt_Low1 Input voltage 1 too low 0=Normal, 1=Alarm W
BV 108 Power_Fuse_Open1 Power Fuse 1 open
(24VAC) 0=Normal, 1=Alarm W
-- -- -- Alarm 2: -
BV 109 Tank_Sens_Bad1 Tank sensor 1 defective 0=Normal, 1=Alarm W
BV 110 Chim_Sens_Bad1 Chimney sensor 1
defective 0=Normal, 1=Alarm W
BV 111 H2OLvl_Prb_Bad1 Water level probe 1 defect 0=Normal, 1=Alarm W
BV 112 Foam_Sens_ON1 Foam Sensor 1 ON 0=Normal, 1=Alarm W
BV 113 OverFlow_DripPan1 Over Flow, Drip Pan 1 0=Normal, 1=Alarm W
BV 114 Tank_Temp_Low1 Tank temper. 1 Too low
(freeze) 0=Normal, 1=Alarm W
BV 115 Tank_Temp_Hi1 Tank temperature 1 too
high 0=Normal, 1=Alarm W
BV 116 Chimney_Temp_Hi1 Chimney temperature 1
too high 0=Normal, 1=Alarm W

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SKG Humidifier Object Table
For tank 1:
type inst Object_Name Description range of Present_Value W?
- - - Operating Status Flags: -
BI 101 Burner_Valve1 Burner Valve 1 0=OFF, 1=ON
BI 102 Burner_Fan1 Burner Fan 1 0=OFF, 1=ON
BI 103 Fill_Tank1 Fill Tank 1 0=OFF, 1=ON
BI 104 Drain_Tank1 Drain Tank 1 0=OFF, 1=ON
BI 105 Water_Level_OK1 Water Level 1 Okay 0=OFF, 1=ON
BI 106 Modulation Stat1 Modulation Status 1 0=OFF, 1=ON
type inst Object_Name Description range of Present_Value W?
MSI 101 Unit_Size1 Unit Size 1 1-100Lbs/Hr or
2-150Lbs/Hr
3-175Lbs/Hr
4-200Lbs/Hr

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SKG Humidifier Object Table
For tank 2:
type inst Object_Name Description range of Present_Value W?
AI 201 Water_Temp2 Water Temperature 2 0-260 °C or 32-500 °F
AI 202 Chimney_Temp2 Chimney Temperature 2 0-260 °C or 32-500 °F
AI 203 Water_Level2 Water level 2 0-120%
AI 204 Burner_Demand2 Burner Demand 2 0.0 - 100.0%
AI 205 Op_Timer_Total2 Operation Timer 2 (Total
time) 1-1677215Hrs
AI 206 Op_Timer2 Operation Timer 2 1-5000Hrs
AI 207 Delay_Autodrain2 Delay until Auto-drain 2 1-100Hrs
AI 208 Foam_Probe_Sensr2 Foam Probe Sensor 2 0-255
AI 209 Burner_Fan_Speed2 Burner Fan Speed 2 0-1000Hz
type inst Object_Name Description range of Present_Value W?
AV 201 Water_Temp_Off2 Water Temperature offset
2 ±0-20 °C or ±0-40 °F W
AV 202 Chimney_Temp_Off2 Chimney Temperature
offset 2 ±0-20 °C or ±0-40 °F W
AV 203 Water_Level_Off2 Water Level offset 2 ±0-20% W
type inst Object_Name Description range of Present_Value W?
-- -- -- Alarm 1: -
BV 201 OverTemp_Cont_ON2 Over temperature contact
ON 2 0=Normal, 1=Alarm W
BV 202 Bad_Fill_Tank2 Defective filling tank 2 0=Normal, 1=Alarm W
BV 203 Bad_Refill_Tank2 Defective refill tank 2(too
long) 0=Normal, 1=Alarm W
BV 204 Bad_Drain_Tank2 Defective draining tank 2 0=Normal, 1=Alarm W
BV 205 Bad_Burner_Fan2 Defective Burner Fan 2 0=Normal, 1=Alarm W
BV 206 Bad_Burner_Gas2 Defective Burner Gas
2(Locked) 0=Normal, 1=Alarm W
BV 207 Input_Volt_Low2 Input voltage 2 too low 0=Normal, 1=Alarm W
BV 208 Power_Fuse_Open2 Power Fuse 2 open
(24VAC) 0=Normal, 1=Alarm W
-- -- -- Alarm 2: -
BV 209 Tank_Sens_Bad2 Tank sensor 2 defective 0=Normal, 1=Alarm W
BV 210 Chim_Sens_Bad2 Chimney sensor 2
defective 0=Normal, 1=Alarm W
BV 211 H2OLvl_Prb_Bad2 Water level probe 2 defect 0=Normal, 1=Alarm W
BV 212 Foam_Sens_ON2 Foam Sensor 2 ON 0=Normal, 1=Alarm W
BV 213 OverFlow_DripPan2 Over Flow, Drip Pan 2 0=Normal, 1=Alarm W
BV 214 Tank_Temp_Low2 Tank temper. 2 Too low
(freeze) 0=Normal, 1=Alarm W
BV 215 Tank_Temp_Hi2 Tank temperature 2 too
high 0=Normal, 1=Alarm W
BV 216 Chimney_Temp_Hi2 Chimney temperature 2
too high 0=Normal, 1=Alarm W

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SKG Humidifier Object Table
For tank 2:
type inst Object_Name Description range of Present_Value W?
- - - Operating Status Flags: -
BI 201 Burner_Valve2 Burner Valve 2 0=OFF, 1=ON
BI 202 Burner_Fan2 Burner Fan 2 0=OFF, 1=ON
BI 203 Fill_Tank2 Fill Tank 2 0=OFF, 1=ON
BI 204 Drain_Tank2 Drain Tank 2 0=OFF, 1=ON
BI 205 Water_Level_OK2 Water Level 2 Okay 0=OFF, 1=ON
BI 206 Modulation Stat2 Modulation Status 2 0=OFF, 1=ON
type inst Object_Name Description range of Present_Value W?
MSI 201 Unit_Size2 Unit Size 2 1-100Lbs/Hr or
2-150Lbs/Hr
3-175Lbs/Hr
4-200Lbs/Hr

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SKG Humidifier Object Table
For tank 3:
type inst Object_Name Description range of Present_Value W?
AI 301 Water_Temp3 Water Temperature 3 0-260 °C or 32-500 °F
AI 302 Chimney_Temp3 Chimney Temperature 3 0-260 °C or 32-500 °F
AI 303 Water_Level3 Water level 3 0-120%
AI 304 Burner_Demand3 Burner Demand 3 0.0 - 100.0%
AI 305 Op_Timer_Total3 Operation Timer 3 (Total
time) 1-1677215Hrs
AI 306 Op_Timer3 Operation Timer 3 1-5000Hrs
AI 307 Delay_Autodrain3 Delay until Auto-drain 3 1-100Hrs
AI 308 Foam_Probe_Sensr3 Foam Probe Sensor 3 0-255
AI 309 Burner_Fan_Speed3 Burner Fan Speed 3 0-1000Hz
type inst Object_Name Description range of Present_Value W?
AV 301 Water_Temp_Off3 Water Temperature offset
3 ±0-20 °C or ±0-40 °F W
AV 302 Chimney_Temp_Off3 Chimney Temperature
offset 3 ±0-20 °C or ±0-40 °F W
AV 303 Water_Level_Off3 Water Level offset 3 ±0-20% W
type inst Object_Name Description range of Present_Value W?
-- -- -- Alarm 1: -
BV 301 OverTemp_Cont_ON3 Over temperature contact
ON 3 0=Normal, 1=Alarm W
BV 302 Bad_Fill_Tank3 Defective filling tank 3 0=Normal, 1=Alarm W
BV 303 Bad_Refill_Tank3 Defective refill tank 3(too
long) 0=Normal, 1=Alarm W
BV 304 Bad_Drain_Tank3 Defective draining tank 3 0=Normal, 1=Alarm W
BV 305 Bad_Burner_Fan3 Defective Burner Fan 3 0=Normal, 1=Alarm W
BV 306 Bad_Burner_Gas3 Defective Burner Gas
3(Locked) 0=Normal, 1=Alarm W
BV 307 Input_Volt_Low3 Input voltage 3 too low 0=Normal, 1=Alarm W
BV 308 Power_Fuse_Open3 Power Fuse 3 open
(34VAC) 0=Normal, 1=Alarm W
-- -- -- Alarm 3: -
BV 309 Tank_Sens_Bad3 Tank sensor 3 defective 0=Normal, 1=Alarm W
BV 310 Chim_Sens_Bad3 Chimney sensor 3
defective 0=Normal, 1=Alarm W
BV 311 H3OLvl_Prb_Bad3 Water level probe 3 defect 0=Normal, 1=Alarm W
BV 312 Foam_Sens_ON3 Foam Sensor 3 ON 0=Normal, 1=Alarm W
BV 313 OverFlow_DripPan3 Over Flow, Drip Pan 3 0=Normal, 1=Alarm W
BV 314 Tank_Temp_Low3 Tank temper. 3 Too low
(freeze) 0=Normal, 1=Alarm W
BV 315 Tank_Temp_Hi3 Tank temperature 3 too
high 0=Normal, 1=Alarm W
BV 316 Chimney_Temp_Hi3 Chimney temperature 3
too high 0=Normal, 1=Alarm W

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SKG Humidifier Object Table
For tank 3:
type inst Object_Name Description range of Present_Value W?
- - - Operating Status Flags: -
BI 301 Burner_Valve3 Burner Valve 3 0=OFF, 1=ON
BI 302 Burner_Fan3 Burner Fan 3 0=OFF, 1=ON
BI 303 Fill_Tank3 Fill Tank 3 0=OFF, 1=ON
BI 304 Drain_Tank3 Drain Tank 3 0=OFF, 1=ON
BI 305 Water_Level_OK3 Water Level 3 Okay 0=OFF, 1=ON
BI 306 Modulation Stat3 Modulation Status 3 0=OFF, 1=ON
type inst Object_Name Description range of Present_Value W?
MSI 301 Unit_Size3 Unit Size 3 1-100Lbs/Hr or
2-150Lbs/Hr
3-175Lbs/Hr
4-200Lbs/Hr

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SKG Humidifier Object Table
For tank 4:
type inst Object_Name Description range of Present_Value W?
AI 401 Water_Temp4 Water Temperature 4 0-260 °C or 32-500 °F
AI 402 Chimney_Temp4 Chimney Temperature 4 0-260 °C or 32-500 °F
AI 403 Water_Level4 Water level 4 0-120%
AI 404 Burner_Demand4 Burner Demand 4 0.0 - 100.0%
AI 405 Op_Timer_Total4 Operation Timer 4 (Total
time) 1-1677215Hrs
AI 406 Op_Timer4 Operation Timer 4 1-5000Hrs
AI 407 Delay_Autodrain4 Delay until Auto-drain 4 1-100Hrs
AI 408 Foam_Probe_Sensr4 Foam Probe Sensor 4 0-255
AI 409 Burner_Fan_Speed4 Burner Fan Speed 4 0-1000Hz
type inst Object_Name Description range of Present_Value W?
AV 401 Water_Temp_Off4 Water Temperature offset
4 ±0-20 °C or ±0-40 °F W
AV 402 Chimney_Temp_Off4 Chimney Temperature
offset 4 ±0-20 °C or ±0-40 °F W
AV 403 Water_Level_Off4 Water Level offset 4 ±0-20% W
type inst Object_Name Description range of Present_Value W?
-- -- -- Alarm 1: -
BV 401 OverTemp_Cont_ON4 Over temperature contact
ON 4 0=Normal, 1=Alarm W
BV 402 Bad_Fill_Tank4 Defective filling tank 4 0=Normal, 1=Alarm W
BV 403 Bad_Refill_Tank4 Defective refill tank 4(too
long) 0=Normal, 1=Alarm W
BV 404 Bad_Drain_Tank4 Defective draining tank 4 0=Normal, 1=Alarm W
BV 405 Bad_Burner_Fan4 Defective Burner Fan 4 0=Normal, 1=Alarm W
BV 406 Bad_Burner_Gas4 Defective Burner Gas
4(Locked) 0=Normal, 1=Alarm W
BV 407 Input_Volt_Low4 Input voltage 4 too low 0=Normal, 1=Alarm W
BV 408 Power_Fuse_Open4 Power Fuse 4 open
(44VAC) 0=Normal, 1=Alarm W
-- -- -- Alarm 4: -
BV 409 Tank_Sens_Bad4 Tank sensor 4 defective 0=Normal, 1=Alarm W
BV 410 Chim_Sens_Bad4 Chimney sensor 4
defective 0=Normal, 1=Alarm W
BV 411 H4OLvl_Prb_Bad4 Water level probe 4 defect 0=Normal, 1=Alarm W
BV 412 Foam_Sens_ON4 Foam Sensor 4 ON 0=Normal, 1=Alarm W
BV 414 OverFlow_DripPan4 Over Flow, Drip Pan 4 0=Normal, 1=Alarm W
BV 414 Tank_Temp_Low4 Tank temper. 4 Too low
(freeze) 0=Normal, 1=Alarm W
BV 415 Tank_Temp_Hi4 Tank temperature 4 too
high 0=Normal, 1=Alarm W
BV 416 Chimney_Temp_Hi4 Chimney temperature 4
too high 0=Normal, 1=Alarm W

SKG Steam Humidifier
BACnet® Communication Module User Guide
18
SKG Humidifier Object Table
For tank 4:
type inst Object_Name Description range of Present_Value W?
- - - Operating Status Flags: -
BI 401 Burner_Valve4 Burner Valve 4 0=OFF, 1=ON
BI 402 Burner_Fan4 Burner Fan 4 0=OFF, 1=ON
BI 403 Fill_Tank4 Fill Tank 4 0=OFF, 1=ON
BI 404 Drain_Tank4 Drain Tank 4 0=OFF, 1=ON
BI 405 Water_Level_OK4 Water Level 4 Okay 0=OFF, 1=ON
BI 406 Modulation Stat4 Modulation Status 4 0=OFF, 1=ON
type inst Object_Name Description range of Present_Value W?
MSI 401 Unit_Size4 Unit Size 4 1-100Lbs/Hr or
2-150Lbs/Hr
3-175Lbs/Hr
4-200Lbs/Hr