Reznor 68266 Switch

The Reznor 68266 Switch is a critical combustion air pressure switch designed for wall mount installation in Reznor heating systems. This differential pressure switch acts as an air proving switch, ensuring that the venter motor is developing the necessary static pressure to safely exhaust combustion gases before the burner is permitted to ignite. Engineered for high-reliability airflow monitoring, the Reznor 68266 features a precise 0.58 +/-0.05 in-WC set point, providing an essential safety interlock for Nortek Global HVAC equipment. It is primarily utilized in Model RPV duct furnaces, CRPV duct furnaces, and SSCBL packaged systems. For technicians replacing a faulty TriDelta air pressure switch, this OEM component ensures proper system safety logic and HVAC automation. Its robust wall-mounted housing and sensing bellows are built to withstand the rigors of industrial and commercial duct furnace applications, maintaining consistent pressure differential sensing without the need for frequent recalibration.

Key Benefits

• System Safety Interlock: Prevents burner operation during insufficient airflow or venter motor failure.
• OEM Precision: Calibrated with a 0.58 in-WC set point for exact compatibility with SC and RPV models.
• Industrial Durability: Robust construction designed for long-term duct furnace air proving in high-demand environments.
• Simplified Installation: Wall mount air switch design allows for accessible mounting and easier pressure tube routing.

Common Questions

Which Reznor models use the 68266 air proving switch?
This switch is commonly configured for Model RPV, CRPV duct furnaces, and SSCBL packaged systems; always check your unit’s wiring diagram to verify the specific static pressure requirements.

What happens if the pressure switch fails to close?
If the Reznor 68266 fails to sense the 0.58 in-WC pressure, the control board will lock out the ignition sequence to prevent hazardous combustion gas buildup.

Can I use a universal switch as a replacement?
It is highly recommended to use the 68266 OEM switch because the specific differential pressure set point is vital for the safety certifications and operational logic of the furnace.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.