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Bard HVAC 8406-086BX SPDT Pressure Switch 0.35" WC

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Special Price $79.93 Regular Price $91.92
In stock
SKU
8406-086BX
The Bard HVAC 8406-086BX SPDT Pressure Switch is developed for HVAC systems. It measures air or gas pressure and is designed to open or close an electrical circuit within a pressure range of 0.35” WC. It is used in HVAC equipment such as furnaces, air handlers, and RO units for fan control, burner proof out, and filter check. These include; proper air flow to the equipment, protection of equipment from pressure changes, and improved efficiency and safety of the system. It is a reliable switch that help in overall performance of the HVAC system.
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HVAC Controls & Electrical, Switches, Pressure Switches
Manufacturer:
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Specifications

  • Type: Pressure Switch
  • Pressure Range: 0.35" WC
  • Switch Type: SPDT
Manufacturer Name: Bard HVAC
Product Number: 8406-086BX
OEM Part Number: 8406-086BX
Product Description: 0.35"Wc Spdt Pressure Switch
Weight:0.32lbs/145.15g

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Product Questions (2)
Customer Questions
What maintenance is required for the Bard HVAC 8406-086BX Pressure Switch?

Regularly inspect the pressure switch for debris, dust, or blockages in the tubing and ports. Ensure electrical connections are secure and free from corrosion. Test the switch periodically for proper operation. Always disconnect power before servicing to avoid electrical hazards.

What are common issues with the Bard HVAC 8406-086BX Pressure Switch?

  • Failure to open or close at set pressure.
  • Blocked or leaking pressure tubing.
  • Electrical contact wear or corrosion.
  • Inconsistent switching response.
  • False triggering due to airflow fluctuations.

Installation Steps

Step 1: Disconnect power and check lockout/tagout for HVAC system.

Step 2: locate and remove the old switch at the specified sensing and secure it firmly.

Step 3: Connect new pressure switch tubing to ports, ensuring no leaks or kinks.

Step 4: Wire terminals per diagram, confirming correct common, NO, NC connections.

Step 5: Adjust setpoint and test switching response under airflow.

Step 6: Restore power and check operation; ensure safe cycling and no erratic switching.