Bard 8402-064 Furnace Limit Control Switch 110-140F

Product Description

The BARD 8402-064 is a limit control switch designed for gas-fired furnace applications. It functions as a high-limit safety device, monitoring heat exchanger temperature and shutting off the burner when temperatures exceed the set threshold. The switch features a 110 to 140 degrees F operating range and a 7 inch insertion depth, making it sized for typical residential and light commercial gas furnace heat exchanger compartments. Auto-reset operation returns the switch to normal function once temperatures fall back within safe range. Installation is performed by licensed HVAC technicians as part of routine service or safety-device replacement.

This limit control switch is a direct replacement component for the BARD NCH080D48A and NCH095D60A gas-fired furnace models. These are packaged heating units commonly found in commercial and light-duty applications. The switch mounts into the furnace cabinet and monitors temperatures within the heat exchanger section, providing automatic over-temperature protection to prevent equipment damage and maintain safe operation.

Key Features

• 110 to 140 degrees F operating range for over-temperature protection
• 7 inch insertion depth sized for gas furnace heat exchanger installation
• Auto-reset function restores normal operation after cool-down
• OEM-specified replacement for BARD NCH080D48A and NCH095D60A furnaces
• Safety shutoff cuts burner operation on over-temperature condition

Compatibility

Specified for use on BARD NCH080D48A and NCH095D60A gas-fired furnace models.

Installation Notes

Installation should be performed by a licensed HVAC technician. Shut off gas supply and disconnect electrical power to the furnace before removing or installing any limit control device. Verify insertion depth and mounting orientation match the original component before securing. Consult applicable local mechanical codes and the IFGC for service requirements on gas-fired heating equipment.

Technical Specifications

• Type: Limit Control Switch
• Temperature Range: 110 to 140 degrees F
• Reset Type: Auto
• Insertion Depth: 7 inches
• Weight: 0.036 pounds

Standard Information

• Brand: BARD
• Manufacturer Part Number: 8402-064