Reznor 197031 Pressure Switch
When you are dealing with thin air at elevations above 6000 feet, standard combustion air monitoring just does not cut it. The Reznor 197031 Pressure Switch is the specific high altitude solution required to maintain precise safety setpoints on your Reznor unit heater. This OEM draft switch is factory-calibrated to 0.35" W.C.—identifiable by its distinct purple label—to ensure the inducer motor is pulling the correct negative pressure for safe combustion in low-density atmospheric conditions. Without this high altitude conversion, your UDX, UDZ, UBX, or UBZ series heaters will likely experience nuisance lockout codes or failed ignition sequences as the standard switch fails to close. This is a heavy-duty, single pole, normally open (SPNO) component designed for combustion safety and is a direct replacement for PN 197031 and cross-referenced with 62YC40. It provides the critical pressure differential verification necessary for commercial and industrial heating reliability.
Key Benefits- High Altitude Calibration: Specifically engineered for installations above 6000 feet (1830 meters) where sea-level switches cause pressure switch open faults.
- Critical Safety Verification: Ensures the venting system is clear and the draft inducer is performing at the required capacity before the gas valve is energized.
- OEM Compatibility: Precision-fit for Reznor UDX, UDZ, UBX, and UBZ units, including 45, 60, 150, and 175 MBH capacities.
- Rugged Diaphragm Design: Built to withstand commercial duty cycles and prevent short-cycling caused by fluctuating atmospheric pressure.
How do I know if the Reznor 197031 is the correct replacement?
This switch is typically used for high-altitude kits or as a direct replacement for heaters showing a 0.35" W.C. rating on the existing switch's label. Systems installed at sea level often use different setpoints; always verify the technical tag on your specific model.
What are the symptoms of a failing pressure switch?
The most common signs include the inducer motor running indefinitely without the burners igniting, or the control board flashing a specific LED code for "pressure switch did not close." You may also hear a clicking or flapping sound if the internal diaphragm is ruptured.
Can I use this switch for sea-level applications?
While functionally similar, using a high-altitude switch at sea level can result in unsafe combustion conditions. This part should only be installed in high altitude environments or on specific models where the 0.35" W.C. setpoint is mandated by the manufacturer.
This item is not eligible for free shipping.
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.
Reznor 197031 Pressure Switch
When you are dealing with thin air at elevations above 6000 feet, standard combustion air monitoring just does not cut it. The Reznor 197031 Pressure Switch is the specific high altitude solution required to maintain precise safety setpoints on your Reznor unit heater. This OEM draft switch is factory-calibrated to 0.35" W.C.—identifiable by its distinct purple label—to ensure the inducer motor is pulling the correct negative pressure for safe combustion in low-density atmospheric conditions. Without this high altitude conversion, your UDX, UDZ, UBX, or UBZ series heaters will likely experience nuisance lockout codes or failed ignition sequences as the standard switch fails to close. This is a heavy-duty, single pole, normally open (SPNO) component designed for combustion safety and is a direct replacement for PN 197031 and cross-referenced with 62YC40. It provides the critical pressure differential verification necessary for commercial and industrial heating reliability.
Key Benefits- High Altitude Calibration: Specifically engineered for installations above 6000 feet (1830 meters) where sea-level switches cause pressure switch open faults.
- Critical Safety Verification: Ensures the venting system is clear and the draft inducer is performing at the required capacity before the gas valve is energized.
- OEM Compatibility: Precision-fit for Reznor UDX, UDZ, UBX, and UBZ units, including 45, 60, 150, and 175 MBH capacities.
- Rugged Diaphragm Design: Built to withstand commercial duty cycles and prevent short-cycling caused by fluctuating atmospheric pressure.
How do I know if the Reznor 197031 is the correct replacement?
This switch is typically used for high-altitude kits or as a direct replacement for heaters showing a 0.35" W.C. rating on the existing switch's label. Systems installed at sea level often use different setpoints; always verify the technical tag on your specific model.
What are the symptoms of a failing pressure switch?
The most common signs include the inducer motor running indefinitely without the burners igniting, or the control board flashing a specific LED code for "pressure switch did not close." You may also hear a clicking or flapping sound if the internal diaphragm is ruptured.
Can I use this switch for sea-level applications?
While functionally similar, using a high-altitude switch at sea level can result in unsafe combustion conditions. This part should only be installed in high altitude environments or on specific models where the 0.35" W.C. setpoint is mandated by the manufacturer.
This item is not eligible for free shipping.
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.
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Description
When you are dealing with thin air at elevations above 6000 feet, standard combustion air monitoring just does not cut it. The Reznor 197031 Pressure Switch is the specific high altitude solution required to maintain precise safety setpoints on your Reznor unit heater. This OEM draft switch is factory-calibrated to 0.35" W.C.—identifiable by its distinct purple label—to ensure the inducer motor is pulling the correct negative pressure for safe combustion in low-density atmospheric conditions. Without this high altitude conversion, your UDX, UDZ, UBX, or UBZ series heaters will likely experience nuisance lockout codes or failed ignition sequences as the standard switch fails to close. This is a heavy-duty, single pole, normally open (SPNO) component designed for combustion safety and is a direct replacement for PN 197031 and cross-referenced with 62YC40. It provides the critical pressure differential verification necessary for commercial and industrial heating reliability.
Key Benefits- High Altitude Calibration: Specifically engineered for installations above 6000 feet (1830 meters) where sea-level switches cause pressure switch open faults.
- Critical Safety Verification: Ensures the venting system is clear and the draft inducer is performing at the required capacity before the gas valve is energized.
- OEM Compatibility: Precision-fit for Reznor UDX, UDZ, UBX, and UBZ units, including 45, 60, 150, and 175 MBH capacities.
- Rugged Diaphragm Design: Built to withstand commercial duty cycles and prevent short-cycling caused by fluctuating atmospheric pressure.
How do I know if the Reznor 197031 is the correct replacement?
This switch is typically used for high-altitude kits or as a direct replacement for heaters showing a 0.35" W.C. rating on the existing switch's label. Systems installed at sea level often use different setpoints; always verify the technical tag on your specific model.
What are the symptoms of a failing pressure switch?
The most common signs include the inducer motor running indefinitely without the burners igniting, or the control board flashing a specific LED code for "pressure switch did not close." You may also hear a clicking or flapping sound if the internal diaphragm is ruptured.
Can I use this switch for sea-level applications?
While functionally similar, using a high-altitude switch at sea level can result in unsafe combustion conditions. This part should only be installed in high altitude environments or on specific models where the 0.35" W.C. setpoint is mandated by the manufacturer.
This item is not eligible for free shipping.
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.
