The Lennox 49K94 (also referenced as 49K9401) Freeze Protection Thermostat Sensor is a single-pole, single-throw (SPST) temperature-activated switch designed to protect HVAC equipment from freezing conditions. This freeze protection thermostat sensor closes at approximately 45 degrees Fahrenheit and opens at approximately 75 degrees Fahrenheit to monitor and respond to low-temperature conditions. It is equipped with 8-inch leads for dependable electrical connection and ease of installation.This thermostat sensor is engineered to safeguard coils and critical components in residential and light commercial HVAC systems by activating when temperatures drop toward freezing. Its SPST contact configuration makes it simple to integrate into control circuits that require a dependable low-temperature sensing device. Suitable for use in Lennox branded equipment as well as compatible systems where a similar freeze protection thermostat is specified.Technicians and contractors will appreciate the dependable switching performance and accurate thermal response necessary for maintaining system reliability. The 8-inch leads provide flexibility in mounting and wiring during service or replacement.
Key Features:
- Freeze protection thermostat sensor closes at 45°F and opens at 75°F
- Single-pole, single-throw (SPST) switching action
- 8-inch pre-attached leads for wiring convenience
- Designed to prevent freezing and low-temperature damage in HVAC systems
- Compatible with Lennox equipment and other systems with matching sensor requirements
- HVAC coil and system freeze protection
- Replacement of existing Lennox 49K94/49K9401 sensors
- Use in control circuits requiring low-temperature sensing switch
Temperature Close Point: ~45°F
Temperature Open Point: ~75°F
Switch Type: SPST
Lead Length: 8 inches
Compatibility: Lennox systems and other compatible HVAC equipment