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Bard 8402-224BX is an OEM limit control thermostat used in Bard wall-mounted HVAC equipment to monitor cabinet or heater temperature and open the control circuit if temperatures rise beyond its setpoint, helping protect electric heat components and wiring from overheating. This L160-7.0 style limit is commonly referenced as a 160 degree Fahrenheit cutout with a 7 degree Fahrenheit differential, making it a key safety and reliability component when you are troubleshooting nuisance trips, heat lockouts, or suspected airflow issues across the heater section. For best results, match the replacement to your unit model and the original limit rating, and confirm proper mounting location and wiring connections during installation.
Bard uses suffixes like "BX" to manage parts internally. These do not change the physical form or function of the part.
A part number ending in "BX" simply means it is packaged in a box for shipping, rather than for internal assembly use.
Example: 8406-142BX is physically identical to 8406-142.