Description
The Bard HVAC 8402-143 is an OEM replacement L155-30 exposed face, auto-reset limit control designed for use in Bard heating and HVAC systems. This high-limit safety control monitors supply air or heat exchanger temperatures and automatically interrupts the circuit when unsafe temperature thresholds are reached, protecting equipment and occupants from overheating conditions.
Product Overview
The L155-30 designation identifies this as a limit switch with a 155°F open setpoint and a 30°F fixed differential, meaning the control automatically resets and closes the circuit once temperatures drop back to approximately 125°F. The exposed face mounting style allows for straightforward installation and field serviceability, while the tan housing provides easy visual identification consistent with OEM Bard equipment standards.
Key Features
- Auto-reset operation — automatically restores circuit once safe temperature is reached
- Exposed face design for easy access and installation
- OEM Bard HVAC replacement part — direct fit for compatible Bard equipment
- Opens at 155°F to protect against overheating
- 30°F fixed differential — resets at approximately 125°F
- Tan housing for OEM-accurate identification
- Functions as a high-limit safety control in heating and HVAC applications
Application
- Bard wall-mount HVAC units and packaged systems
- High-limit protection for heat exchangers and supply air circuits
- Direct OEM replacement for units specifying part number L155-30 / 8402-143
Why Choose OEM Bard Replacement Parts?
Using genuine Bard HVAC replacement components ensures proper fit, reliable operation, and maintains equipment warranty integrity. The 8402-143 limit control is engineered to the same specifications as the original factory part, delivering consistent safety performance over the life of your Bard system.
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