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What is the rotation direction for this fan blade
This OP420 CL300 model is calibrated to open the circuit (cutout) at 425 PSI and close the circuit (cut-in) once pressure drops to 325 PSI
meaning it will open and close reliably at 0 PSI
It is ideal for general HVAC air handling but should be verified against specific corrosive exhaust gases in industrial settings
Bard HVAC 5651-159BX Control 30067439-890 What is the rotation directionThe Bard HVAC 5651 159BX Integrated Furnace Control is the specified OEM replacement for the discontinued 5651 159 furnace control board. This HVAC integrated control module manages critical furnace cycles, including gas valve sequencing, inducer motor timing, and blower operation. Engineered for compatibility with specific Bard wall mount units and gas furnaces, the 5651 159BX ensures reliable diagnostic flash codes for streamlined troubleshooting on