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

York YVWA Water-Cooled Variable-Speed Screw Chiller - BAS E-Link (YorkTalk 2) BACnet points list

Updated 6 November 2026

Short answer

Before the SC-EQ card, YVWA chillers reached a BAS through the E-Link gateway, which reads the microboard over YorkTalk 2 (4800 baud) and serves BACnet, N2, LON and Modbus objects named by YorkTalk page. Section 1 holds remote commands and core chiller data; section 2 holds further system and option points.

This page lists 88 BACnet objects for the York YVWA Water-Cooled Variable-Speed Screw Chiller - BAS E-Link (YorkTalk 2) — 6 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
YVWA Water-Cooled Variable-Speed Screw Chiller - BAS E-Link (YorkTalk 2)
Equipment
Water-cooled variable-speed screw chiller (via E-Link gateway)
Equipment type
Chillers
BACnet objects
88 (6 writable)
Transport
—
Firmware
Not stated
Also known as
YORK YVWA, YVWA BAS, E-Link, eLink, YorkTalk 2, 031-02478, 031-03478
Source document
YVWA BAS (ISN) E-Link points list · rev. 2020-02-11
Download CSV 88 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 YVWA Water-Cooled Variable-Speed Screw Chiller - BAS E-Link (YorkTalk 2)

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 1YT2_S01_P07Remote start/stop (1 = run)Write
AV 1YT2_S01_P03Remote leaving chilled liquid setpointWrite
AV 2YT2_S01_P04Remote current limit, %Write
BV 20YT2_S01_P51Must read Remote (1) for BMS controlRead
MV 1YT2_S01_P56System 1 operating codeRead
BV 5YT2_S01_P36Chiller runningRead
AV 5YT2_S01_P11Leaving chilled liquid temperatureRead
AV 6YT2_S01_P12Entering chilled liquid temperatureRead
MV 2YT2_S01_P57System 1 fault codeRead
BV 6YT2_S01_P37Chiller alarm (1 = alarm)Read

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 YVWA Water-Cooled Variable-Speed Screw Chiller - BAS E-Link (YorkTalk 2) 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.

88 of 88 shown
Type
AnalogBinaryMulti-state
Access
Show
York YVWA Water-Cooled Variable-Speed Screw Chiller - BAS E-Link (YorkTalk 2) BACnet Points List
DescriptionStates
AVmin1YT2_S01_P03Remote Chilled Liquid Setpoint°FWrite
AVmin2YT2_S01_P04Remote Current Limit Setpoint%Write
AV4YT2_S01_P06Remote Heating Setpoint°FWrite
BVmin1YT2_S01_P07Remote Start/Stop CommandWrite0=Stop, 1=Run
BV3YT2_S01_P09Remote Operating ModeWrite0=Chiller, 1=Heatpump
BV4YT2_S01_P10History Buffer 1 RequestWrite0=Live Data, 1=History 1 Data
AVmin5YT2_S01_P11Leaving Chilled Liquid Temp°FRead
AVmin6YT2_S01_P12Entering Chilled Liquid Temp°FRead
AV7YT2_S01_P13VSD Internal Ambient Temp°FRead
AV8YT2_S01_P14Leaving Condenser Liquid Temp°FRead
AV9YT2_S01_P15Sys 1 Discharge Temperature°FRead
AV11YT2_S01_P17Entering Condenser Liquid Temp°FRead
AV12YT2_S01_P18Sys 1 Oil PressurepsiRead
AV13YT2_S01_P19Sys 1 Evaporator PressurepsiRead
AV14YT2_S01_P20Sys 1 Discharge PressurepsiRead
AV15YT2_S01_P21Sys 1 Compressor % Full Load Amps%Read
AV16YT2_S01_P22Sys 1 Total Run HoursRead
AV17YT2_S01_P23Sys 1 Total Number of StartsRead
AV18YT2_S01_P24Sys 1 Highest Motor Temp°FRead
AV19YT2_S01_P25Sys 2 Highest Motor Temp°FRead
AV20YT2_S01_P26Sys 1 Economizer Temperature°FRead
AV21YT2_S01_P27Sys 2 Oil PressurepsiRead
AV22YT2_S01_P28Sys 2 Evaporator PressurepsiRead
AV23YT2_S01_P29Sys 2 Discharge PressurepsiRead
AV24YT2_S01_P30Sys 2 Compressor % Full Load Amps%Read
AV25YT2_S01_P31Sys 2 Total Run HoursRead
AV26YT2_S01_P32Sys 2 Total Number of StartsRead
AV27YT2_S01_P33VSD Output FrequencyHzRead
AV28YT2_S01_P34Sys 1 Condenser Level Control Valve % Open%Read
AV29YT2_S01_P35Sys 2 Condenser Level Control Valve % Open%Read
BVmin5YT2_S01_P36Chiller RunRead
BVmin6YT2_S01_P37Chiller AlarmRead0=No Alarm, 1=Alarm
BV7YT2_S01_P38VSD Aux Coolant PumpRead
BV8YT2_S01_P39Evaporator/Condenser Pump StatusRead
BV9YT2_S01_P40Sys 1 Compressor Run StatusRead
BV10YT2_S01_P41Sys 2 Compressor Run StatusRead
BV11YT2_S01_P42Sys 1 VI Step Solenoid Valve 1 StatusRead
BV12YT2_S01_P43Sys 2 VI Step Solenoid Valve 1 StatusRead
BV13YT2_S01_P44Sys 1 VI Step Solenoid Valve 2 StatusRead
BV14YT2_S01_P45Sys 2 VI Step Solenoid Valve 2 StatusRead
BV15YT2_S01_P46Sys 1 Oil Level Switch StatusRead
BV16YT2_S01_P47Sys 2 Oil Level Switch StatusRead
BV17YT2_S01_P48Sys 1 Liquid Refrigerant Injection Valve StatusRead
BV18YT2_S01_P49Sys 2 Liquid Refrigerant Injection Valve StatusRead
BV19YT2_S01_P50Cooling TypeRead0=Water, 1=Glycol
BVmin20YT2_S01_P51Local Remote Control ModeRead0=Local, 1=Remote
BV21YT2_S01_P52Display UnitsRead0=Imperial, 1=SI
BV22YT2_S01_P53Sys 1 Hot Gas Bypass Valve StatusRead
BV23YT2_S01_P54Sys 2 Hot Gas Bypass Valve StatusRead
BV24YT2_S01_P55HeatpumpRead0=No, 1=Yes
MVmin1YT2_S01_P56Sys 1 Operational CodeRead
MVmin2YT2_S01_P57Sys 1 Fault CodeRead
MV3YT2_S01_P58Sys 2 Operational CodeRead
MV4YT2_S01_P59Sys 2 Fault CodeRead
MV9YT2_S01_P64Lead System NumberRead
AV30YT2_S01_P66Local Leaving Chilled/Condenser Liquid Setpoint°FRead
AV31YT2_S01_P67Low Leaving Chilled/Condenser Liquid Temp Cutout°FRead
AV32YT2_S01_P68Sys 1 Economizer Valve % Open%Read
AV33YT2_S01_P69Sys 2 Economizer Valve % Open%Read
AV34YT2_S01_P70Sys 2 Economizer Temp°FRead
AV35YT2_S01_P71VSD DC Bus VoltageVRead
AV36YT2_S01_P72Remote Leaving Chilled/Condenser Liquid Setpoint°FRead
AV37YT2_S01_P73Sys 1 Drop Leg Refrigerant Temperature°FRead
AV38YT2_S01_P74Cooling/Heating Range°FRead
AV39YT2_S01_P75Sys 1 Economizer PressurepsiRead
AV40YT2_S01_P76Sys 2 Economizer PressurepsiRead
AV41YT2_S01_P77Sys 2 Discharge Temperature°FRead
AV42YT2_S01_P78Sys 2 Drop Leg Refrigerant Temperature°FRead
BV25YT2_S01_P80Sys 1 LockoutRead
BV26YT2_S01_P81Sys 2 LockoutRead
BV27YT2_S01_P82Sys 1 Economizer Drain Solenoid ValveRead
BV28YT2_S01_P83Sys 2 Economizer Drain Solenoid ValveRead
BV29YT2_S01_P84SCC Auto Detect AvailableRead
AV105YT2_S02_P11Head Pressure Valve Command (HPC enabled)%Read
AV106YT2_S02_P12Sys 1 Head PressurepsiRead
AV107YT2_S02_P13Sys 2 Head PressurepsiRead
BV105YT2_S02_P36Option IndicatorRead
BV115YT2_S02_P46Aux Coolant Pump OptionRead0=Disabled, 1=Enabled
BV116YT2_S02_P47Oil Level OptionRead0=Disabled, 1=Enabled
BV117YT2_S02_P48Hot Gas Bypass OptionRead0=Disabled, 1=Enabled
BV118YT2_S02_P49Compressor TypeRead0=WTS, 1=CTS
BV119YT2_S02_P50SCC Auto Detect Digit 1Read
BV120YT2_S02_P51SCC Auto Detect Digit 2Read
BV121YT2_S02_P52SCC Auto Detect Digit 3Read
BV122YT2_S02_P53SCC Auto Detect Digit 4Read
BV123YT2_S02_P54SCC Auto Detect Digit 5Read
BV124YT2_S02_P55SCC Auto Detect Digit 6Read
BV129YT2_S02_P84UnitsRead0=Imperial, 1=Metric
Object ID lookup: York YVWA 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 YVWA Water-Cooled Variable-Speed Screw Chiller - BAS E-Link (YorkTalk 2) 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 YVWA Water-Cooled Variable-Speed Screw Chiller - BAS E-Link (YorkTalk 2)

How many BACnet points does the York YVWA Water-Cooled Variable-Speed Screw Chiller - BAS E-Link (YorkTalk 2) have?

This list has 88 BACnet objects: 43 analog values, 40 binary values, 5 multi-state values. The exact set on a given unit depends on its firmware, installed options and configuration.

Which York YVWA Water-Cooled Variable-Speed Screw Chiller - BAS E-Link (YorkTalk 2) BACnet points are writable?

6 of the 88 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 YVWA Water-Cooled Variable-Speed Screw Chiller - BAS E-Link (YorkTalk 2) BACnet documentation?

The source is YVWA BAS (ISN) E-Link points list, revision 2020-02-11, published free by York at https://docs.johnsoncontrols.com/chillers/api/khub/documents/zbueaePe6Wu3YKVBu~fp3A/content.

What are the minimum BACnet points to integrate the York YVWA Water-Cooled Variable-Speed Screw Chiller - BAS E-Link (YorkTalk 2)?

Start with BV 1 YT2_S01_P07 (Remote start/stop (1 = run)); AV 1 YT2_S01_P03 (Remote leaving chilled liquid setpoint); AV 2 YT2_S01_P04 (Remote current limit, %); BV 20 YT2_S01_P51 (Must read Remote (1) for BMS control); MV 1 YT2_S01_P56 (System 1 operating code); BV 5 YT2_S01_P36 (Chiller running); AV 5 YT2_S01_P11 (Leaving chilled liquid temperature); AV 6 YT2_S01_P12 (Entering chilled liquid temperature); MV 2 YT2_S01_P57 (System 1 fault code); BV 6 YT2_S01_P37 (Chiller alarm (1 = alarm)).

How do I enable BMS control of the York YVWA Water-Cooled Variable-Speed Screw Chiller - BAS E-Link (YorkTalk 2)?

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 YVWA Water-Cooled Variable-Speed Screw Chiller - BAS E-Link (YorkTalk 2)?

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: YVWA BAS (ISN) E-Link points list · rev. 2020-02-11. Object names, instances and units are reproduced as published; descriptions are our own.