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Chiller plant controller (water-cooled chillers, pumps and towers) · BACnet points list

Armstrong Fluid Technology EE-W20 chiller plant controller (water-cooled) BACnet points list

Updated 6 November 2026

Manufacturer

Armstrong Fluid Technology

Model

EE-W20 chiller plant controller (water-cooled)

Equipment

Chiller plant controller (water-cooled chillers, pumps and towers)

Equipment type

Chillers

BACnet objects

459 (101 writable)

Transport

—

Firmware

BACnet communication interface Rev 24.071

Also known as

EE-W20, EE-W 20, Armstrong EE-W20, 90.7661

Source document

EE-W20 Data points (BAS data points - BACnet, Communication Interface Rev 24.071) · 90.7661 · rev. 2025-07-18

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

Armstrong Fluid Technology EE-W20 chiller plant controller (water-cooled) 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.

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Integration notes

• The data-points sheet titles the table BACnet but does not say whether it is BACnet IP or MS/TP.
• Mode objects (AV) use 0 = Not Used, 1 = Hand, 2 = Off, 3 = Auto. Duty/standby, chiller duty and chiller state objects are coded values; the codes are in each point's states.
• Hand/Auto BVs and Hand Command BVs, plus the Hand Speed / Hand Position AOs, let the BMS run a valve, pump or fan by hand. Set Lead objects act only when the written value changes.
• Units for temperatures, pressures and flows follow the controller's unit setting (the PDF lists the options).
• Footnote asterisks after some pump names in the PDF are left off the object names. They mean: for dualArm or Twin pumps, pump numbers 1-5 are the A sides and 6-10 the B sides, and those pumps only report duty or standby because they run in dedicated mode with their chiller.
• The PDF table is on pages 14-24. One Reserved AI is left out. The EE-W10 list is a subset of this one.

Questions about the Armstrong Fluid Technology EE-W20 chiller plant controller (water-cooled)

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  Armstrong Fluid Technology IPS 4000 pumping system controller - variable secondary

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• Chiller plant controller (chillers and chilled water pumps)

  Armstrong Fluid Technology SE-A10 chiller plant controller

  Armstrong SE-A10 chilled water plant controls with no condenser water side; the object list covers up to 3 chillers and 3 chilled water pumps.

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  Armstrong SE-A20 chilled water plant controls with no condenser water side; the object list covers up to 5 chillers, 10 chilled water pumps and 5 control zones.

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Source: EE-W20 Data points (BAS data points - BACnet, Communication Interface Rev 24.071) · 90.7661 · rev. 2025-07-18. Object names, instances and units are reproduced as published; descriptions are our own.