Description
The Bard HVAC 8402-074BX is a genuine OEM L170-7F limit switch engineered to provide dependable high-temperature protection in Bard packaged heating and cooling systems. Designed as a direct replacement, this limit switch monitors heat exchanger or plenum temperatures and interrupts the heating circuit when unsafe temperature thresholds are reached, safeguarding both the equipment and the occupied space.
Product Overview
Limit switches are a critical safety component in any forced-air heating system. When temperatures exceed the designed set point, the limit switch opens the circuit to the burner or heating element, preventing overheating, heat exchanger damage, and potential fire hazards. The L170-7F designation identifies this switch’s specific trip characteristics, making it essential to use the correct OEM part for proper system protection and performance.
Key Features
- Genuine Bard HVAC OEM replacement part
- L170-7F rated limit switch for precise temperature control
- Designed for direct drop-in replacement in compatible Bard packaged units
- Interrupts heating circuit upon high-temperature condition to prevent equipment damage
- Helps maintain system safety and code compliance
- Durable construction for long service life in demanding HVAC environments
Application
- Compatible with select Bard HVAC packaged wall-mount and rooftop units
- Ideal for service technicians performing preventive maintenance or emergency repairs
- Suitable for residential and light commercial HVAC applications
Why Choose OEM Parts?
Using genuine Bard OEM components like the 8402-074BX ensures proper fit, function, and system reliability. Aftermarket substitutes may not meet the exact trip-point specifications required for safe operation. Always verify compatibility with your specific Bard unit model before installation.







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