Chiller (LonTalk)

Property	Type	Description
Alarm Event Class[1-3]	Numeric	This arrayed property specifies the event classes to which Informational Messages, Service Required Messages, and Critical Alarm Messages are routed. The event class has a set of receivers as determined in Site Configuration that will receive the alarm messages. All diagnostics from non-Trane chillers will be routed as Informational Messages.
Alarm Present	Binary	Indicates if a diagnostic is present that is causing the chiller to be shut down. 0 = Normal, no diagnostics 1 = Alarm, one or more diagnostics
Alarm Reset	Binary	This property clears/resets the alarms in the device. Persistent alarms will be reported, as they are re-detected. Some alarms can not be reset through Tracer Summit and need to be reset at the chiller controller. 0 = Nothing occurs 1 = Clear/reset alarm
Alarms Locked	Binary	Indicates if the alarms reported by the device via Diagnostic Alarm Status can be cleared using the Alarm Reset property. 0 = No Alarms can be cleared using Alarm Reset. 1 = Yes Alarms cannot be cleared from Tracer Summit. This property is expected to be No for all Trane chillers and may be Yes for non-Trane chillers.
Base Loading Request: Ref	Property Reference	Specifies the value used to determine the value of "Base Loading Request: Tracer." 0 = Auto 1 = On
Base Loading Request: Tracer	Binary	Indicates if Tracer Summit is requesting the chiller to use the Base Loading method of control. 0 = Auto Tracer Summit is not requesting the chiller to use Base Loading. However, Base Loading can still be requested from another source. 1 = On Tracer Summit is requesting the chiller to Base Load.
Base Loading Setpoint: Active	Numeric	The Base Loading Setpoint the chiller will use to control to when Base Loading Status is On. Units: %
Base Loading Setpoint: Ref	Property Reference	Specifies the value used to determine "Base Loading Setpoint: Tracer". Units: % Range: 0 to 160 %
Base Loading Setpoint: Tracer	Numeric	The Base Loading Setpoint Tracer Summit is sending to the controller. It is the setpoint to which the chiller should control when "Base Loading Status" is On. Units: % Range: 0 to 160 %
Base Loading Status	Enumerated	Indicates if the chiller controller is using the Base Loading method of control. 0 = Off The chiller is not using Base Loading control. 1 = On The chiller is using Base Loading control.
Chilled Water Flow Rate	Numeric	The rate at which the chilled water is flowing through the evaporator. Units: L/s or GPM
Chilled Water Flow Status	Binary	Indicates if water is flowing through the evaporator. 0 = No Flow 1 = Flow
Chilled Water Pump Output	Enumerated	Indicates the state of the binary output used to enable and disable the chilled water pump. 0 = Off 1 = On 2 = Not Present
Chilled Water Setpoint: Active	Numeric	Indicates the value being used by the chiller controller for chilled water temperature control. Valid when "Operating Mode: Active" is Cool, Free Cool, or Ice-Making. Invalid when "Operating Mode: Active" is Heat and will be shown as "---". Units: degrees C or degrees F
Chilled Water Setpoint: Ref	Property Reference	Specifies the value or property used to determine "Chilled Water Setpoint: Tracer", which communicates the chilled water setpoint to the chiller controller. Range: 0 to 120 degrees F (-17.78 to 48.8 degrees C)
Chilled Water Setpoint: Tracer	Numeric	The chilled water setpoint Tracer Summit is sending to the chiller controller. Range: 0 to 120 degrees F (-17.78 to 48.8 degrees C)
Chilled Water Temp: Delta	Numeric	The temperature decrease of the water as it flows through the evaporator. Calculated by subtracting the "Chilled Water Temp: Leaving" from the "Chilled Water Temp: Entering". Units: degrees C or degrees F
Chilled Water Temp: Entering	Numeric	The temperature of the water entering the evaporator. Units: degrees C or degrees F
Chilled Water Temp: Leaving	Numeric	The temperature of the water leaving the evaporator. Units: degrees C or degrees F
Chiller Design Capacity	Numeric	The nominal capacity of the chiller. Units: kW or tons
Chiller Enable/Disable: Tracer	Binary	Used to place the chiller in Auto or Stop from Tracer Summit. This property is referred to as "Chiller Run Request" on the standard graphic, editor, and report. The value of this property is based on the Present Value property. For more details, look up Chiller Enable/Disable in the Tracer Summit Help file index. 0 = Stop The chiller controller is to stop the chiller. 1 = Auto The chiller controller is allowed to start the chiller.
Chiller Run Request		See "Chiller Enable/Disable: Tracer".
Chiller Run Status	Enumerated	Indicates if the chiller is doing either cooling or heating. 0 = Off The chiller is off. 1 = On The chiller is on and doing either cooling or heating. This will include free cooling. 2 = Not Present
Chiller Type	Enumerated	The chiller model. 0 = RTA 1 = CVH 2 = CVG 3 = CVR 4 = CDH 5 = RTH 6 = CGW 7 = CGA 8 = CCA 9 = RTW 10 = RTX 11 = RTU 255 = "---"
Comm5 Communication State	Enumerated	Obsolete name as of v16SP2. Refer to LonTalk Communication State property for a description.
Comm5 Device NID	Bytestring	Obsolete name as of v16SP2. Refer to LonTalk Device NID property for a description.
Comm5 DSN	Unsigned Long Word	Obsolete name as of v16SP2. Refer to LonTalk DSN property for a description.
Comm5 Program ID	Numeric	Obsolete name as of v16SP2. Refer to LonTalk Program ID property for a description.
Communication Channel	Numeric	The BCU communications link number to which the chiller controller is assigned.
Communication State	Binary	The chiller controller's communication state. 0 = Down 1 = Up
Compressor Current(%RLA)	Numeric	The compressor current draw expressed as a percent of the compressor rated load amps (%RLA). Calculated by averaging the three values obtained from the Compressor Phase Current(%RLA) property. This property is available for each compressor (A, B, C, D, E, and F). Units: %RLA
Compressor Disch Refrig Temp	Numeric	The temperature of the refrigerant being discharged from the compressor. This property is available for each compressor (A, B, C, D, E, and F). Units: degrees C or degrees F
Compressor Oil Press: Diff	Numeric	The difference between the high side and low side oil pressures of the compressor. Calculated by subtracting the "Compressor Oil Press: Low Side" from the "Compressor Oil Press: High Side". This property is available for each compressor (A, B, C, D, E, and F). Units: kPa or PSI
Compressor Oil Press: High Side	Numeric	The pressure of the oil at the high-pressure side of the compressor. This property is available for each compressor (A, B, C, D, E, and F). Units: kPa or PSI
Compressor Oil Press: Low Side	Numeric	The pressure of the oil at the low-pressure side of the compressor. This property is available for each compressor (A, B, C, D, E, and F). Units: kPa or PSI
Compressor Oil Temperature	Numeric	The temperature of the oil in the compressor. This property is available for each compressor (A, B, C, D, E, and F). Units: degrees C or degrees F
Compressor Phase Current(%RLA)[1-3]	Numeric	This arrayed property indicates the current draw in %RLA for each line of the three-phase power input for the compressor. This property is available for each compressor (A, B, C, D, E, and F). 1 = Line 1 2 = Line 2 3 = Line 3 Units: %RLA
Compressor Phase Current(Amps)[1-3]	Numeric	This arrayed property indicates the current draw for each line of the three-phase power input for the compressor. This property is available for each compressor (A, B, C, D, E, and F). 1 = Line 1 2 = Line 2 3 = Line 3 Units: Amps
Compressor Phase Voltage[1-3]	Numeric	This arrayed property indicates the voltages associated with the three-phase power input for the compressor. This property is available for each compressor (A, B, C, D, E, and F). 1 = Phase AB 2 = Phase BC 3 = Phase CA Units: Volts
Compressor Run Time	Numeric	The total runtime for the compressor. This property is available for each compressor (A, B, C, D, E, and F). Units: Hours
Compressor Starts	Numeric	The number of times the compressor has been started. This property is available for each compressor (A, B, C, D, E, and F).
Compressor Status	Enumerated	The status of the compressor. This property is available for each compressor (A, B, C, D, E, and F). 0 = Off 1 = On 2 = Not Present
Condenser Air Flow Percent: CKT1	Numeric	The amount of air flowing through the condenser in circuit 1 expressed as a percentage of the total possible airflow. Units: %
Condenser Air Flow Percent: CKT2	Numeric	The amount of air flowing through the condenser in circuit 2 expressed as a percentage of the total possible airflow. Units: %
Condenser Approach Temp: CKT1	Numeric	The temperature difference between the water leaving the condenser and the refrigerant that is heating it. In other words, it is the difference between "Condenser Water Temp: Leaving" and "Condenser Refrig Temp: CKT1". Units: degrees C or degrees F
Condenser Approach Temp: CKT2	Numeric	The temperature difference between the water leaving the condenser and the refrigerant that is heating it. In other words, it is the difference between "Condenser Water Temp: Leaving" and "Condenser Refrig Temp: CKT2". Units: degrees C or degrees F
Condenser Fan Status[1 - 8]	Enumerated	Indicates the status of the condenser fans. 0 = Off 1 = On 2 = Not Present
Condenser Refrig Pressure: CKT1	Numeric	The condenser refrigerant pressure in refrigeration circuit 1. Units: kPa or PSI
Condenser Refrig Pressure: CKT2	Numeric	The condenser refrigerant pressure in refrigeration circuit 2. Units: kPa or PSI
Condenser Refrig Temp: CKT1	Numeric	The condenser refrigerant temperature in refrigeration circuit 1. Units: degrees C or degrees F
Condenser Refrig Temp: CKT2	Numeric	The condenser refrigerant temperature in refrigeration circuit 2. Units: degrees C or degrees F
Condenser Water Control Output	Numeric	Indicates the percent open of the control output for condenser water flow. Units: % open
Condenser Water Flow Rate	Numeric	The rate at which water is flowing through the condenser. Units: L/s or GPM
Condenser Water Flow Status	Binary	Indicates if water is flowing through the condenser. 0 = No Flow 1 = Flow
Condenser Water Pump Output	Enumerated	Indicates the state of the binary output used to enable and disable the condenser water pump. 0 = Off 1 = On 2 = Not Present
Condenser Water Temp: Delta	Numeric	The temperature increase of the water as it flows through the condenser. Calculated by subtracting the "Condenser Water Temp: Entering" from the "Condenser Water Temp: Leaving". Units: degrees C or degrees F
Condenser Water Temp: Entering	Numeric	The temperature of the water entering the condenser. Units: degrees C or degrees F
Condenser Water Temp: Leaving	Numeric	The temperature of the water leaving the condenser. Units: degrees C or degrees F
Control Event Class	Numeric	Determines where control messages are routed when the object’s present value is controlled.
Critical Application Alarming	Binary	Determines if a select group of Service Required Messages should be routed as if they were Critical Alarm Messages. The chiller controller, not Tracer Summit, determines which diagnostic messages are included in the select group. 0 = Disabled Route the select group of alarms as Service Required Messages. 1 = Enabled Route the select group of alarms as Critical Alarm Messages.
Current Limit Setpoint: Active	Numeric	The value being used by the chiller controller for the current limit. The current limit may have the effect of preventing the chiller from producing water at the setpoint. Units: %
Current Limit Setpoint: Ref	Property Reference	Specifies the value or property used to determine "Current Limit Setpoint: Tracer". Range: 0 to 160 %
Current Limit Setpoint: Tracer	Numeric	The current limit setpoint Tracer Summit is sending to the chiller controller. Range: 0 to 160 %
Device Major Revision	Numeric	This revision number is updated whenever the device’s network interface changes.
Device Minor Revision	Numeric	This revision number is updated whenever the device's software is changed for any reason.
Diagnostic Alarm Status	Text String	Displays the diagnostic messages of the controller as they occur.
Evaporator Approach Temp: CKT1	Numeric	The temperature difference between the water leaving the evaporator and the refrigerant that is cooling it. In other words, it is the difference between "Chilled Water Temp: Leaving" and "Evaporator Refrig Temp: CKT1". Units: degrees C or degrees F
Evaporator Approach Temp: CKT2	Numeric	The temperature difference between the water leaving the evaporator and the refrigerant that is cooling it. In other words, it is the difference between the "Chilled Water Temp: Leaving" and the "Evaporator Refrig Temp: CKT2". Units: degrees C or degrees F
Evaporator Refrig Pressure: CKT1	Numeric	The evaporator refrigerant pressure for refrigeration circuit 1. Units: kPa or PSI
Evaporator Refrig Pressure: CKT2	Numeric	The evaporator refrigerant pressure for refrigeration circuit 2. Units: kPa or PSI
Evaporator Refrig Temp: CKT1	Numeric	The evaporator refrigerant temperature for refrigeration circuit 1. Units: degrees C or degrees F
Evaporator Refrig Temp: CKT2	Numeric	The evaporator refrigerant temperature for refrigeration circuit 2. Units: degrees C or degrees F
Free Cooling Request: Ref	Property Reference	Specifies the value used to determine if "Operating Mode: Tracer" should be set to "Free Cool". For more details on how "Operating Mode: Tracer" is determined, look up Operating Mode in the Tracer Summit Help file index. 0 = Auto Do not set "Operating Mode: Tracer" to "Free Cool". 1 = On Set "Operating Mode: Tracer" to "Free Cool".
Head Relief Request	Enumerated	Indicates if the controller is requesting help in rejecting heat from the condenser water loop. This request suggests that the condenser refrigerant pressure (head) in at least one refrigeration circuit needs to be lowered. 0 = No 1 = Yes 2 = Not Present
Hot Gas Bypass Status	Enumerated	The status of the hot gas bypass output. 0 = Inactive 1 = Active 2 = Not Present
Hot Water Control Request: Ref	Property Reference	Specifies the value used to determine if "Operating Mode: Tracer" should be set to "Heat". For more details on how "Operating Mode: Tracer" is determined, look up Operating Mode in the Tracer Summit Help file index. 0 = Auto Do not set "Operating Mode: Tracer" to Heat. 1 = On Set "Operating Mode: Tracer" to Heat.
Hot Water Setpoint: Active	Numeric	The setpoint value for "Condenser Water Temp: Leaving". Valid when "Operating Mode: Active" is Heat. Invalid when "Operating Mode: Active" is Cool, Free Cool, or Ice-Making. An invalid value will be shown as "---". Units: degrees C or degrees F
Hot Water Setpoint: Ref	Property Reference	Specifies the value used to determine "Hot Water Setpoint: Tracer". Range: 50 to 200 degrees F (10 to 93 degrees C)
Hot Water Setpoint: Tracer	Numeric	The hot water setpoint Tracer Summit is sending to the chiller controller to use when the chiller is in heating mode. Range: 50 to 200 degrees F (10 to 93 degrees C)
Ice Making Request: Ref	Property Reference	Specifies the value used to determine if "Operating Mode: Tracer" should be set to Ice-Making. For more details on how "Operating Mode: Tracer" is determined, look up Operating Mode in the Tracer Summit Help file index. 0 = Auto Do not set "Operating Mode: Tracer" to "Ice-Making". 1 = On Set "Operating Mode: Tracer" to Ice-Making.
Last Control Date Time	Date/Time Numeric	The date and time the Present Value was last controlled.
Limit Condition	Binary	Indicates if conditions exist that may prevent the chiller from reaching setpoint. 0 = Not Limited 1 = Limited
Location Label	Text String	Used to provide descriptive location information.
LonTalk Communication State	Enumerated	This property indicates the status of communications between the BCU and the chiller controller. This property is similar to "Communication State" but gives greater detail. 0 = Down 1 = Up 2 = No neuron ID assigned 3 = Installation in progress 4 = Incomplete bindings
LonTalk Device NID	Bytestring	The Neuron ID (NID) of the chiller controller. This is a unique, six-byte, non-adjustable serial number found on every Neuron.
LonTalk DSN	Unsigned Long Word	A value representing the Domain, Subnet, and Node ID (DSN) of the chiller controller.
LonTalk Program ID	Numeric	An identifier stored in the device (in the Neuron Chip's EEPROM) that identifies the application program running on the node. All nodes with the same program ID must have the same external interface.
Maximum Capacity	Enumerated	Indicates if all available chiller capacity is being used. 0 = No 1 = Yes 2 = Not Present
Node Self Doc	Text String	Displays the type of controller (i.e. Tracer LCI-C for CH530). It is the first 64 characters of the node's self-documentation string.
Object Name	Text String	The assignment of a unique printable name to the object for user identification within Tracer Summit.
Object Type	Multi-State	This is the object’s type.
Operating Capacity	Numeric	The percent of capacity the chiller is using. Units: %
Operating Mode: Active	Enumerated	The operating mode of the chiller. 1 = Heat 3 = Cool 10= Free Cool 11= Ice-Making
Operating Mode: Tracer	Enumerated	Communicates the control mode to the controller. The mode is determined by "Free Cooling Request: Ref", "Hot Water Control Request: Ref" and "Ice Making Request: Ref". For more details on how "Operating Mode: Tracer" is determined, look up Operating Mode in the Tracer Summit Help file index. 1 = Heat 3 = Cool 10 = Free Cool 11 = Ice-Making
Outdoor Air Temperature: Active	Numeric	The outdoor air temperature reported by the controller. Units: degrees C or degrees F
Present Value	Enumerated	This property is used to control the object to one of nine standard operation modes. These modes are defined as Unoccupied, Optimal Stop, Occupied, Optimal Start, Demand Limit, Duty Cycle, Priority Shutdown, Night Economize, and Night Heat Cool. A translation (within the BCU) takes place to map these modes to a simple Auto/Stop command sent to the chiller controller. See "Chiller Enable/Disable: Tracer" above or look up Chiller Enable/Disable in the Tracer Summit Help file index.
Purge 24 Hour Pumpout: CKT1	Numeric	Pumpout time over the last 24 hours for the purge unit associated with refrigeration circuit 1. Units: Minutes
Purge 24 Hour Pumpout: CKT2	Numeric	Pumpout time over the last 24 hours for the purge unit associated with refrigeration circuit 2. Units: Minutes
Purge Pumping Out: CKT1	Enumerated	Indicates if the purge unit for refrigeration circuit 1 is attempting to rid itself of collected non-condensable gasses. 0 = No 1 = Yes 2 = Not Present
Purge Pumping Out: CKT2	Enumerated	Indicates if the purge unit for refrigeration circuit 2 is attempting to rid itself of collected non-condensable gasses. 0 = No 1 = Yes 2 = Not Present
Purge Refrig Circuit: CKT1	Enumerated	Indicates if the purge unit for refrigeration circuit 1 is attempting to collect non-condensable gasses from the refrigeration circuit. 0 = Off 1 = On 2 = Not Present
Purge Refrig Circuit: CKT2	Enumerated	Indicates if the purge unit for refrigeration circuit 1 is attempting to collect non-condensable gasses from the refrigeration circuit. 0 = Off 1 = On 2 = Not Present
Purge Regenerating: CKT1	Enumerated	Indicates if the carbon bed associated with the purge unit for refrigeration circuit 1 is going through a regeneration cycle. 0 = No 1 = Yes 2 = Not Present
Purge Regenerating: CKT2	Enumerated	Indicates if the carbon bed associated with the purge unit for refrigeration circuit 2 is going through a regeneration cycle. 0 = No 1 = Yes 2 = Not Present
Refrigerant Type	Enumerated	The refrigerant type.
Run Enabled	Binary	Indicates if the chiller is allowed to run. 0 = No The chiller may be in local mode or is in a disabled condition. 1 = Yes The chiller is currently running or is available to run. Nothing is commanding the chiller not to run.
Run Mode	Enumerated	The primary running mode of the chiller. 0 = Off 1 = Starting 2 = Running 3 = Pre-shutdown 4 = Service 0xFF = "---"
Second Cond Water Temp: Delta	Numeric	The temperature increase of the water as it flows through the second condenser. Calculated by subtracting the "Second Cond Water Temp: Entering" from the "Second Cond Water Temp: Leaving". Units: degrees C or degrees F
Second Cond Water Temp: Entering	Numeric	The temperature of the water entering the second condenser. Units: degrees C or degrees F
Second Cond Water Temp: Leaving	Numeric	The temperature of the water leaving the second condenser. Units: degrees C or degrees F
Tons: Active	Numeric	The active cooling capacity being produced by the chiller, as calculated by the BCU: (Tons: Active) = (Chilled Water Flow Rate) x (Chilled Water Temp: Delta) x (density of water) x (specific heat of water) Since this calculation uses the density and specific heat of water, the presence of glycol in the chilled water will effect the accuracy of this calculation. Units: tons or kW
Unit Control Source	Binary	Indicates the source from which the chiller controller is getting its control information. 0 = Remote Network-visible values may be changed remotely. 1 = Local Chiller is being controlled from a local source and will not respond to remote requests.
Unit Phase Current(Amps)[1-3]	Numeric	This arrayed property indicates the current draw for each line of the chiller’s three-phase power input. 1 = Line 1 2 = Line 2 3 = Line 3 Units: Amps
Unit Phase Voltage[1-3]	Numeric	This arrayed property indicates the voltages associated with the chiller’s three-phase power input. 1 = Phase AB 2 = Phase BC 3 = Phase CA Units: Volts
Unit Power Consumption	Numeric	The amount of power the chiller is consuming in kW. Units: kW
Update Tag	Numeric	This is the upload/download tag property. Its purpose is to keep the PC Workstation and BCU copies of the object instance in synchronization.