|
8406-098 OBSOLETE
- Diff. Press. Sw. .38" Open On Fall
The Bard 8406-098 differential pressure switch is an OEM safety and monitoring control used in Bard wall-mount HVAC equipment to prove proper airflow or pressure conditions before allowing certain system functions to run. This switch is set to open on a falling pressure condition at approximately 0.38 inches water column, helping the unit respond correctly if airflow drops due to a loaded filter, blower issue, or restricted ducting depending on the application. Installing the correct Bard factory switch helps maintain proper sequencing and dependable operation because the calibration and electrical characteristics are matched to Bard control logic. Confirm fit by matching the full unit model and serial information and verifying the required setpoint and tubing/port connections in the Bard parts literature for your specific unit.
Official replacement(s):
8406-078
- Diff. Press. Sw. .38" Open On Fall