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

York YS / YN Screw Chiller - OptiView E-Link (YorkTalk 3) BACnet points list

Updated 6 November 2026

Short answer

The E-Link gateway reads the YS or YN OptiView microboard over YorkTalk 3 and serves BACnet, N2, LON and Modbus objects. This entry merges the four tabs (YS and YN, standard and solid-state starter): remote setpoints, operational mode and start/stop, water temperatures and pressures, motor values and status codes.

This page lists 46 BACnet objects for the York YS / YN Screw Chiller - OptiView E-Link (YorkTalk 3) — 5 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
YS / YN Screw Chiller - OptiView E-Link (YorkTalk 3)
Equipment
Water-cooled screw chiller (via E-Link gateway)
Equipment type
Chillers
BACnet objects
46 (5 writable)
Transport
—
Firmware
Not stated
Also known as
YORK YS, YORK YN, YS OptiView, YN OptiView, E-Link, eLink, YorkTalk 3
Source document
YS_YN OptiView E-Link points list, tabs YS/YN Standard and SSS · rev. 2010-09-24 (Rev K_03a)
Download CSV 46 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 YS / YN Screw Chiller - 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 YS / YN Screw Chiller - 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.

46 of 46 shown
Type
AnalogBinaryMulti-state
Access
Show
York YS / YN Screw Chiller - OptiView E-Link (YorkTalk 3) BACnet Points List
DescriptionStates
AVmin1REM LEAVING CHW TEMP SPLeaving Chilled Liquid Setpoint°FWrite
AVmin2MOTOR CURRENT REMOTE SPMotor Current Limit Setpoint%Write
AV3HOT WATER REMOTE SPLeaving Heated Liquid SP (CondLvgTemp SP 90-140F)°FWrite
AV4OPERATIONAL MODEOperational ModeWrite0=Cooling, 1=Heating, 2=Cool&Heat
BVmin1REM START STOP CMDRemote Start/Stop [Stop/Start]Write
AVmin5LEAVING CHW TEMPLeaving Chilled Liquid Temperature°FRead
AVmin6ENTERING CHW TEMPReturn Chilled Liquid Temperature°FRead
AV7EVAPORATOR PRESSUREEvaporator Pressure PSIApsiRead
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
AV19LEAVING CHW TEMP ACT SPLeaving Chilled Liquid Setpoint - Selected°FRead
AV20MOTOR CURRENT ACTUAL SPMotor Current Limit Setpoint - Selected%Read
AV21EVAP SATURATION TEMPEvaporator Saturation Temperature°FRead
AV22COND SATURATION TEMPCondenser Saturation Temperature°FRead
AV23DISCHARGE TEMPDischarge Temperature°FRead
AV24OIL SUMP TEMPERATUREOil Temperature°FRead
AV26ACCUM OPERATING HOURSUnit Operating HourshoursRead
AV27ACCUM SYSTEM STARTSUnit System StartsRead
BVmin5COMPR MOTOR STATUSMotor Run ContactsRead
BV6OIL RETURN SOLENOIDOil Return SolenoidRead
BV7CHW PUMP STATChilled Liquid PumpRead
BV8STOP SWITCH STATUSPanel Stop Switch [Start enabled/Stop]Read
BV9CHW FLOW SWITCH STATChiller Liquid Flow SwitchRead
BV11LOW SEPARATOR OIL SWITCHLow Separator Oil SwitchRead
BV24ICE STORAGE MODEIce Storage Mode [Disabled/Enabled]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 SOURCEControl SourceRead0=Local, 1 = ISN, 2= Analog, 3 = Digital, 4 = Modem
AV32LVNG CHW TEMP ACT SPLeaving Chilled Liquid Temperature SP Active°FRead
AV35ANTI RECYCLE TIME REMAINAnti-Recycle Time RemainingminRead
AV37SEAL PRESS DIFFERENTIALSeal Pressure Differential PSIDpsiRead
AV38FILTER PRESS DIFFERENTFilter Pressure Differential PSIDpsiRead
AV39LVNG COND HW TEMP ACT SPLeaving Heated Liquid Setpoint - Active°FRead
AV41MIN LOAD CTL MTR FLA LIMMinimum Load Control Motor FLA Limit%Read
AV42SLIDE VALVE POSITIONSlide Valve Position%Read
AV13PHASE A MOTOR CURRENTSSS Phase A CurrentARead
AV14PHASE B MOTOR CURRENTSSS Phase B CurrentARead
AV15PHASE C MOTOR CURRENTSSS Phase C CurrentARead
AV16PHASE A_B LINE VOLTSSSS Phase A VoltageVRead
AV17PHASE B_C LINE VOLTSSSS Phase B VoltageVRead
AV18PHASE C_A LINE VOLTSSSS Phase C VoltageVRead
Object ID lookup: York YS / YN 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 YS / YN Screw Chiller - 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 YS / YN Screw Chiller - OptiView E-Link (YorkTalk 3)

How many BACnet points does the York YS / YN Screw Chiller - OptiView E-Link (YorkTalk 3) have?

This list has 46 BACnet objects: 33 analog values, 8 binary values, 5 multi-state values. The exact set on a given unit depends on its firmware, installed options and configuration.

Which York YS / YN Screw Chiller - OptiView E-Link (YorkTalk 3) BACnet points are writable?

5 of the 46 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 YS / YN Screw Chiller - OptiView E-Link (YorkTalk 3) BACnet documentation?

The source is YS_YN OptiView E-Link points list, tabs YS/YN Standard and SSS, revision 2010-09-24 (Rev K_03a), published free by York at https://docs.johnsoncontrols.com/chillers/api/khub/documents/eJKAA5RbxwVvTPF__h2dHA/content.

What are the minimum BACnet points to integrate the York YS / YN Screw Chiller - 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 YS / YN Screw Chiller - 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 YS / YN Screw Chiller - 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: YS_YN OptiView E-Link points list, tabs YS/YN Standard and SSS · rev. 2010-09-24 (Rev K_03a). Object names, instances and units are reproduced as published; descriptions are our own.