Reznor 195316 Pressure Switch

The Reznor 195316 Pressure Switch is a high-precision OEM safety component designed for critical atmospheric monitoring in Reznor gas-fired unit heaters, specifically within the UDAP and UDAS series. Engineered for a fixed set point of 0.47" WC (water column), this SPST (Single Pole Single Throw) switch operates as a normally open contact that closes when proper combustion air pressure is detected. This ensures the inducer motor is generating sufficient draft before the ignition sequence initiates. Featuring a dual 1/4" barb connection for seamless pneumatic tubing integration, the 195316 is the direct replacement for 125131. As a veteran HVAC technician knows, maintaining the integrity of the combustion air pressure switch is vital for preventing nuisance trips and ensuring safe heater operation in commercial or industrial environments. Its robust diaphragm construction is built to withstand the thermal cycling typical of high-demand HVAC induction systems without signal drift.

• OEM Compatibility: Precision-calibrated for Reznor UDAP and UDAS unit heaters, serving as the official replacement part for 125131.
• Technical Precision: Factory-set at 0.47" WC to maintain strict safety tolerances for combustion air pressure.
• Reliable Connectivity: Equipped with a dual 1/4" barb connection for secure, leak-free pneumatic interface with the collector box and venter assembly.
• Simplified Integration: Standard SPST configuration allows for a drop-in pressure switch installation without field modifications.

What are the signs of a failing Reznor pressure switch?
If your unit displays a "pressure switch stuck open" fault code, it often indicates the inducer is running but the 0.47" WC threshold is not being met, or the switch diaphragm has lost its calibration.

Can I use this to replace part 125131?
Yes, the Reznor 195316 is the designated OEM replacement for the older 125131 model, maintaining identical electrical and pneumatic specifications.

Is this switch compatible with non-Reznor equipment?
While the SPST logic is standard, this switch is specifically calibrated for the static pressure requirements of Reznor HVAC systems. Always verify the WC rating against your equipment’s data plate.

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.