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Thermostats

T921A Proportional Control Thermostats

T921A proportional thermostats provide low voltage, 3-wire control for valve motors, damper motors, and balancing relays in heating or cooling system applications.

T921A proportional thermostats provide low voltage, 3-wire control for valve motors, damper motors, and balancing relays in heating or cooling system applications.

Features & Benefits:
  • Accessory faceplates available for horizontal mounting
  • A bellows element adjusts the potentiometer slider to regulate motor operation
  • Available with a thermometer and a locking cover
  • Removable setting knob prevents unauthorized tampering with setpoint

Others

  • Brand
    • Honeywell
  • Stages
    • 1 Proportional
  • Mounting Type
    • Vertical

Others

  • Brand
    • Honeywell
  • Stages
    • 1 Proportional
  • Mounting Type
    • Vertical
  • Brand : Honeywell
  • Stages : 1 Proportional
  • Mounting Type : Vertical
Installation Instructions
Name
Description
File Size
Date
Size
Installation Instructions
application/pdf 168.66 KB
2/17/2022
168.66 KB
Reference Guides
Name
Description
File Size
Date
Size
Commercial Thermostat Product Quick Reference Guide (visor card) (English)
application/pdf 281.02 KB
2/17/2022
281.02 KB
Data Sheet
Name
Description
File Size
Date
Size
application/pdf 153.69 KB
2/11/2022
153.69 KB
Engineering Specifications
Name
Description
File Size
Date
Size
Specification Data for T921A, T921B, T921E, T921F, T921G Proportional Control Thermostats (English)
application/pdf 190.81 KB
8/19/2021
190.81 KB
Name
Description
File Size
Date
Size
Installation Instructions
168.66 KB
2/17/2022
168.66 KB
Commercial Thermostat Product Quick Reference Guide (visor card) (English)
281.02 KB
2/17/2022
281.02 KB
Specification Data for T921A, T921B, T921E, T921F, T921G Proportional Control Thermostats (English)
190.81 KB
8/19/2021
190.81 KB
Image
SKU
Description
alt
T921A1191/U
Thermostat, Proportional Control, 56 to 84F, Contemporary Cover