Reznor 193806 Switch

Ensure reliable sequence of operation with the Reznor 193806 Switch, an OEM-grade low air pressure switch kit engineered for precise combustion airflow monitoring. Designed with a dual SPDT (Single Pole Double Throw) contact form, this field-replaceable component features a fixed 0.20" WC sensitivity, serving as a critical safety interlock to verify proper inducer draft before burner ignition. The Reznor 193806 is built with a rugged housing and a 1/4-inch barb connection, making it high-performance equipment for commercial and industrial unit heaters where draft stability is non-negotiable.

This HVAC pressure switch is a direct replacement for various legacy parts in Reznor ADF, RDF, and duct furnace models manufactured after 1991. When replacing obsolete hardware, this 0.2-inch WC switch ensures integrated system reliability by preventing operation during blocked vent conditions or blower failure. Professional installation is recommended to calibrate the differential pressure sensing and maintain optimal efficiency in high-demand heating environments.

• OEM Compatibility: Specifically designed for Reznor heating and ventilation equipment, ensuring a perfect drop-in fit for models like RP, RPB, and SC.
• Precision Safety: Fixed 0.20 inch water column set point prevents unsafe combustion conditions by accurately detecting airflow drops.
• Industrial Durability: Robust construction and brass housing options provide longevity in harsh mechanical rooms and industrial settings.
• Standardized Connections: Features a 1/4-inch barb for vacuum/pressure tubing and standard spade terminals for seamless electrical integration.

What models are compatible with the Reznor 193806?
This switch is compatible with Reznor RP, RPB, SC, SCE, and many obsolete models like ADFH and DFAV produced after August 1999. Always check your specific unit’s wiring diagram for the exact pressure switch replacement part number.

Does this switch handle both positive and negative pressure?
Yes, as a dual SPDT pressure switch, it is optimized for differential pressure sensing across the combustion air pathway, effectively monitoring vacuum or positive pressure depending on your inducer configuration.

Can I use this for a 3-wire or 2-wire setup?
The SPDT configuration includes Common (C), Normally Open (NO), and Normally Closed (NC) terminals, allowing it to function in various safety loop configurations commonly found in Reznor units.

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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.