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Water-cooled centrifugal chiller (via E-Link gateway) · BACnet points list

York YT Centrifugal Chiller with VSD - OptiView E-Link (YorkTalk 3) BACnet points list

Updated 6 November 2026

Short answer

The E-Link gateway reads the YT OptiView microboard over YorkTalk 3 and serves BACnet, N2, LON and Modbus objects. The VSD tab covers remote setpoint, current limit and start/stop, water temperatures and pressures, VSD and harmonic filter values and status codes.

This page lists 57 BACnet objects for the York YT Centrifugal Chiller with VSD - OptiView E-Link (YorkTalk 3) — 4 of them writable — with each object’s type, instance number, name, engineering units and access. It is re-typed from York’s own free documentation, linked below.

Manufacturer
York
Model
YT Centrifugal Chiller with VSD - OptiView E-Link (YorkTalk 3)
Equipment
Water-cooled centrifugal chiller (via E-Link gateway)
Equipment type
Chillers
BACnet objects
57 (4 writable)
Transport
—
Firmware
Not stated
Also known as
YORK YT, YT OptiView, YT VSD, E-Link, eLink, YorkTalk 3
Source document
YT OptiView E-Link points list, tab with VSD · rev. 2020-02-11 (Rev K_03b)
Download CSV 57 rows Download EDE B.I.G.-EU JSON Manufacturer PDF ↗ Compare with your scan Download Easy BACnet Mobile App Google Play

Reference only, provided as-is: verify against York’s current documentation and the live device before use. Not official York information. Terms of use.

BMS integration notes: York YT Centrifugal Chiller with VSD - OptiView E-Link (YorkTalk 3)

Integration in brief

Put the chiller in remote/ISN control at the panel, then start and stop it with the E-Link remote run/stop object and write the remote setpoint and current limit. Read the operating, safety and warning codes, run status and water temperatures.

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.

ObjectNameWhyAccess
BV 1REM START STOP CMDRemote start/stop (1 = run)Write
AV 1REM LEAVING CHW TEMP SPRemote leaving chilled liquid setpointWrite
AV 2MOTOR CURRENT REMOTE SPRemote current limit, %Write
MV 5UNIT CONTROL SOURCEMust read ISN (BAS) for BMS controlRead
MV 1UNIT OPERATION CODEUnit operating status codeRead
BV 5COMPR MOTOR STATUSChiller runningRead
AV 5LEAVING CHW TEMPLeaving chilled liquid temperatureRead
AV 6ENTERING CHW TEMPEntering chilled liquid temperatureRead
MV 2UNIT SAFETY FAULT CODESafety (shutdown) fault codeRead
MV 4UNIT WARNING FAULT CODEActive warning codeRead

Enable & remote start

The E-Link remote slots (AV 1-4, BV 1-4) are the BMS commands; the chiller panel must be set for remote (ISN/BAS) control for them to take effect.

Network setup

Watch out for

York YT Centrifugal Chiller with VSD - OptiView E-Link (YorkTalk 3) 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.

57 of 57 shown
Type
AnalogBinaryMulti-state
Access
Show
York YT Centrifugal Chiller with VSD - OptiView E-Link (YorkTalk 3) BACnet Points List
DescriptionStates
AVmin1REM LEAVING CHW TEMP SPLeaving Chilled Liquid Setpoint - Selected°FWrite
AVmin2MOTOR CURRENT REMOTE SPMotor Current Limit Setpoint - Selected%Write
BVmin1REM START STOP CMDRemote Start/Stop [Stop / Start]Write
BV3VSD FIXED SPEED SELECTVariable Speed Drive Fixed Speed [Auto/Fixed]Write
AVmin5LEAVING CHW TEMPLeaving Chilled Liquid Temperature°FRead
AVmin6ENTERING CHW TEMPReturn Chilled Liquid Temperature°FRead
AV7EVAPORATOR PRESSUREEvaporator PressurepsiRead
AV8CONDENSER PRESSURECondenser PressurepsiRead
AV9OIL DIFERENTIAL PRESSUREOil Pressure DifferentialpsiRead
AV10ENTERING COND WATER TEMPReturn Condenser Liquid Temperature°FRead
AV11LEAVING COND WATER TEMPLeaving Condenser Liquid Temperature°FRead
AV12MOTOR CURRENT PCT FLAMotor Current Percent FLA%Read
AV13PHASE A MOTOR CURRENTVariable Speed Drive Phase A CurrentARead
AV14PHASE B MOTOR CURRENTVariable Speed Drive Phase B CurrentARead
AV15PHASE C MOTOR CURRENTVariable Speed Drive Phase C CurrentARead
AV19LEAVING CHW TEMP ACT SPLeaving Chilled Liquid Setpoint - Selected°FRead
AV20MOTOR CURRENT ACTUAL SPMotor Current Limit Setpoint - Selected%Read
AV21EVAP SATURATION TEMPEvaporator Saturation Temp°FRead
AV22COND SATURATION TEMPCondenser Saturation Temp°FRead
AV23DISCHARGE TEMPDischarge Temperature°FRead
AV24OIL SUMP TEMPERATUREOil Sump Temperature°FRead
AV25PURGE PRESSUREPurge PressurepsiRead
AV26ACCUM OPERATING HOURSUnit Operating HourshoursRead
AV27ACCUM SYSTEM STARTSUnit System StartsRead
BVmin5COMPR MOTOR STATUSMotor Run ContactsRead
BV6VENT LINE SOLENOIDVent Line SolenoidRead
BV7CHW PUMP STATChilled Liquid PumpRead
BV8STOP SWITCH STATUSPanel Stop Switch [Start enabled / Stop]Read
BV9CHW FLOW SWITCH STATChilled Liquid Flow SwitchRead
BV17ACC VALVE SURGE MAPAdaptive Capacity Control Valid Surge Map (False =0, True =1)Read
BV18ACC NEW SURGE POINTAdaptive Capacity Control New Surge Point (False =0, True =1)Read
BV19VSD COOL PUMP RUN RELAYVariable Speed Drive Water Pump RelayRead
BV20VSD HARMONIC FILTER INSTHarmonic Filter Installed (False =0, True =1)Read
BV21ACC SURGE DETECTION TYPEAdaptive Capacity Control Surge Type (Open = Delta P/P, Made=Current)Read
MVmin1UNIT OPERATION CODEOperation CodeRead
MVmin2UNIT SAFETY FAULT CODEUnit Safety Fault CodeRead
MV3UNIT CYCLING FAULT CODEUnit Cycling Fault CodeRead
MVmin4UNIT WARNING FAULT CODEUnit Warning Fault CodeRead
MVmin5UNIT CONTROL SOURCEUnit Control SourceRead0=Local, 1 = ISN, 2= Analog, 3 = Digital, 4 = Modem
AV32ANTI RECYCLE TIME REMAINAnti-Recycle Time RemainingRead
AV33ACC MAP PRV POSAdaptive Capacity Control Map PRV PositionRead
AV34VSD OUTPUT VOLTAGEVariable Speed Drive OutputVoltageRead
AV35VSD INPUT KWVariable Speed Drive Input PowerRead
AV36VSD INPUT MWHVariable Speed Drive Killowatt HoursRead
AV37VSD DC LINK VOLTAGEVariable Speed Drive DC Bus VoltageRead
AV38VSD DC LINK CURRENTVariable Speed Drive Inverter Link CurrentRead
AV39VSD SURGE COUNTAdaptive Capacity Control Surge CountRead
AV40VSD OUTPUT FREQUENCYVariable Speed Drive Output FrequencyRead
AV41VSD MAX VOLTAGE THDHarmonic Filter Maximum Voltage Total Harmonic DistortionRead
AV42VSD MAX CURRENT TDDHarmonic Filter Maximum Current Total Demand DistortionRead
AV43VSD HFILTER SUPPLY KVAHarmonic Filter Total Supply KVARead
AV110VSD INTERNAL AMBIEN TEMPVSD internal ambient temp (low-voltage VSD only)°FRead
AV111VSD CONVERTER HSINK TEMPVSD converter heatsink temp (low-voltage VSD only)°FRead
AV112PRE ROTATIONAL VANE POSPre-rotation vanes position%Read
AV113ACC MAP OUTPUT FREQACC map output frequency (low-voltage VSD only)HzRead
AV114REFRIGERANT LEVEL SPRefrigerant level setpoint%Read
AV115DROP LEG REFRIG TEMPDrop leg refrigerant temperature°FRead
Object ID lookup: York YT VSD E-Link point IDs by name

Integration notes

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 YT Centrifugal Chiller with VSD - OptiView E-Link (YorkTalk 3) 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 York YT Centrifugal Chiller with VSD - OptiView E-Link (YorkTalk 3)

How many BACnet points does the York YT Centrifugal Chiller with VSD - OptiView E-Link (YorkTalk 3) have?

This list has 57 BACnet objects: 40 analog values, 12 binary values, 5 multi-state values. The exact set on a given unit depends on its firmware, installed options and configuration.

Which York YT Centrifugal Chiller with VSD - OptiView E-Link (YorkTalk 3) BACnet points are writable?

4 of the 57 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 York YT Centrifugal Chiller with VSD - OptiView E-Link (YorkTalk 3) BACnet documentation?

The source is YT OptiView E-Link points list, tab with VSD, revision 2020-02-11 (Rev K_03b), published free by York at https://docs.johnsoncontrols.com/chillers/api/khub/documents/p2OiyENC3XS2iIF4~nNx7Q/content.

What are the minimum BACnet points to integrate the York YT Centrifugal Chiller with VSD - OptiView E-Link (YorkTalk 3)?

Start with BV 1 REM START STOP CMD (Remote start/stop (1 = run)); AV 1 REM LEAVING CHW TEMP SP (Remote leaving chilled liquid setpoint); AV 2 MOTOR CURRENT REMOTE SP (Remote current limit, %); MV 5 UNIT CONTROL SOURCE (Must read ISN (BAS) for BMS control); MV 1 UNIT OPERATION CODE (Unit operating status code); BV 5 COMPR MOTOR STATUS (Chiller running); AV 5 LEAVING CHW TEMP (Leaving chilled liquid temperature); AV 6 ENTERING CHW TEMP (Entering chilled liquid temperature); MV 2 UNIT SAFETY FAULT CODE (Safety (shutdown) fault code); MV 4 UNIT WARNING FAULT CODE (Active warning code).

How do I enable BMS control of the York YT Centrifugal Chiller with VSD - OptiView E-Link (YorkTalk 3)?

The E-Link remote slots (AV 1-4, BV 1-4) are the BMS commands; the chiller panel must be set for remote (ISN/BAS) control for them to take effect.

How do I check these points on the real YT Centrifugal Chiller with VSD - OptiView E-Link (YorkTalk 3)?

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 York BACnet points lists

Source: YT OptiView E-Link points list, tab with VSD · rev. 2020-02-11 (Rev K_03b). Object names, instances and units are reproduced as published; descriptions are our own.