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

Armstrong Fluid Technology IPC 9521 chilled water plant controller BACnet points list

Updated 6 November 2026

Manufacturer

Armstrong Fluid Technology

Model

IPC 9521 chilled water plant controller

Equipment

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

Equipment type

Chillers

BACnet objects

468 (99 writable)

Transport

—

Firmware

Communication interface Rev 18.122

Also known as

IPC 9521, IPC9521, Armstrong IPC 9521, 90.874

Source document

IPC 9521 Data points (Communication Interface Rev 18.122) · 90.874 · rev. 2019-09-16

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 IPC 9521 chilled water plant controller 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: 1/1a is a single pump or side A of a dualArm/Twin pump, and the b points are side B (not used for single pumps).
• The PDF table is on pages 15-25. One Reserved AI is left out.

Questions about the Armstrong Fluid Technology IPC 9521 chilled water plant controller

More Armstrong Fluid Technology BACnet points lists

• Cooling tower and condenser pump plant controller

  Armstrong Fluid Technology Design Envelope Integrated Tower Controller (ITC 9521)

  Armstrong Design Envelope Integrated Tower Controller for the condenser water side: up to 5 cooling towers (fans, inlet/outlet isolation valves) and 5 condenser water pumps.

  210 objects · 44 writable · 82.21
  Also known as: ITC 9521, ITC9521, Design Envelope ITC, Integrated Tower Controller, 82.21
• Chiller plant controller (water-cooled chillers, pumps and towers)

  Armstrong Fluid Technology EE-W10 chiller plant controller (water-cooled)

  Armstrong EE-W10 water-cooled chilled water plant controls; the object list covers up to 3 chillers, 3 chilled water pumps, 3 condenser water pumps and 3 towers.

  213 objects · 51 writable · 90.7651
  Also known as: EE-W10, EE-W 10, Armstrong EE-W10, 90.7651
• Chiller plant controller (water-cooled chillers, pumps and towers)

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

  Armstrong EE-W20 water-cooled chilled water plant controls; the object list covers up to 5 chillers, 10 chilled water pumps, 10 condenser water pumps, 5 towers and 5 control zones.

  459 objects · 101 writable · 90.7661
  Also known as: EE-W20, EE-W 20, Armstrong EE-W20, 90.7661
• Pump system controller (variable primary)

  Armstrong Fluid Technology IPS 4000 pumping system controller - variable primary

  Armstrong IPS 4000 controllers set up for variable primary pumping: up to 8 pumps, 16 control zones and 8 chillers or boilers with flow and differential pressure limits.

  362 objects · 109 writable · 90.9751
  Also known as: IPS 4000, IPS4000, IPS 4000 primary, Integrated Pumping System 4000, 90.9751
• Pump system controller (variable secondary)

  Armstrong Fluid Technology IPS 4000 pumping system controller - variable secondary

  Armstrong IPS 4000 controllers set up for variable secondary pumping: up to 8 pumps and 16 control zones.

  292 objects · 74 writable · 90.761 (file 90-9761)
  Also known as: IPS 4000, IPS4000, IPS 4000 secondary, Integrated Pumping System 4000, 90.9761
• 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.

  106 objects · 24 writable · 90.7671
  Also known as: SE-A10, SE-A 10, Armstrong SE-A10, 90.7671
• Chiller plant controller (chillers and chilled water pumps)

  Armstrong Fluid Technology SE-A20 chiller plant controller

  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.

  222 objects · 48 writable · 90.7681
  Also known as: SE-A20, SE-A 20, Armstrong SE-A20, 90.7681

Source: IPC 9521 Data points (Communication Interface Rev 18.122) · 90.874 · rev. 2019-09-16. Object names, instances and units are reproduced as published; descriptions are our own.