Description
The ACI 102484 Freeze Stat is a robust freeze protection control designed for commercial and industrial HVAC applications where reliable low-temperature detection is critical. Featuring a 20-foot capillary sensing element, this freeze stat continuously monitors air temperature across a wide coverage area — ideal for protecting air handling units, coils, and ductwork from freeze damage.
Key Features
- 20-foot capillary sensing element for broad-area freeze detection
- Manual reset (M/R) operation — requires intentional reset after a freeze event, preventing automatic restart until conditions are verified safe
- Dual SPDT (Single Pole Double Throw) switching action provides both normally open and normally closed contacts for flexible control wiring
- Designed for use in air handling units, fan coil units, and duct applications
- Durable construction suited for demanding commercial HVAC environments
Why Manual Reset Matters
Unlike automatic-reset freeze stats, the manual reset design of the ACI 102484 ensures that a technician must physically inspect and reset the unit after a freeze condition is detected. This added safety step helps prevent equipment damage from repeated freeze events and ensures proper system evaluation before resuming operation.
Dual SPDT Switching
The two SPDT output contacts give installers maximum flexibility in control circuit design. Use one contact to shut down the air handling unit and the other to trigger an alarm or auxiliary control function — all from a single device.
Applications
- Air handling units (AHUs)
- Fan coil units
- Duct-mounted freeze protection
- Commercial and industrial HVAC systems
- Chilled water coil protection







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