Reznor 193808 Pressure Switch
The Reznor 193808 Pressure Switch is a high-performance SPDT (Single Pole Double Throw) combustion air proving switch designed for precise pressure regulation in commercial and industrial HVAC equipment. This OEM-certified component features dual 1/4" barb connections for seamless integration into differential pressure sensing loops. Engineered for high-altitude applications and compatible with various Reznor heating units, it ensures the induction fan is generating sufficient negative pressure before allowing the ignition sequence to proceed. As a critical safety control, the 193808 air pressure switch monitors the pressure differential across the heat exchanger, protecting the system from venting obstructions or blower failures. With its robust SPDT switch configuration, this part provides both normally open and normally closed contact sets, allowing for versatile wiring in multiple control circuit designs. Professionals rely on this Reznor replacement part for its reliability in demanding thermal environments and exact factory specifications.
Key Benefits
- Universal SPDT Switching: Offers flexible wiring configurations with Normally Open (NO) and Normally Closed (NC) terminals for HVAC control circuits.
- Dual 1/4" Barb Ports: Simplifies the installation of silicone or aluminum pressure tubing for accurate differential monitoring.
- High Altitude Compatibility: Facilitates reliable operation in specialized heating applications where standard switches may fail.
- OEM Reliability: Ensures exact mechanical fit and electrical performance when replacing obsolete models like PPS10175-3044 or FS4197-171.
- Enhanced System Safety: Prevents unsafe ignition cycles by verifying proper combustion air flow and venting integrity.
Common Questions
How do I wire the Reznor 193808 if my old terminals are different?
Newer production runs may feature updated terminal sizes (1/4" vs 3/16"). It is common practice for technicians to crimp on the provided quick-connect terminals to match the Common (C), Normally Open (NO), and Normally Closed (NC) posts on the new switch.
What does it mean if my pressure switch stays open?
A switch that fails to close usually indicates a restriction in the flue, a failing inducer motor, or cracked tubing. After verifying the 1/4" barb connections are secure, check the pressure differential against the switch's rating to confirm if the issue is the part or the system airflow.
Can this be used on dual-tubing systems?
Yes, the dual barb connection allows for both positive and negative pressure lines to be attached, providing a highly accurate differential reading required for high-efficiency Reznor duct furnaces and unit heaters.
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.
Original: $133.78
-65%$133.78
$46.82Reznor 193808 Pressure Switch
The Reznor 193808 Pressure Switch is a high-performance SPDT (Single Pole Double Throw) combustion air proving switch designed for precise pressure regulation in commercial and industrial HVAC equipment. This OEM-certified component features dual 1/4" barb connections for seamless integration into differential pressure sensing loops. Engineered for high-altitude applications and compatible with various Reznor heating units, it ensures the induction fan is generating sufficient negative pressure before allowing the ignition sequence to proceed. As a critical safety control, the 193808 air pressure switch monitors the pressure differential across the heat exchanger, protecting the system from venting obstructions or blower failures. With its robust SPDT switch configuration, this part provides both normally open and normally closed contact sets, allowing for versatile wiring in multiple control circuit designs. Professionals rely on this Reznor replacement part for its reliability in demanding thermal environments and exact factory specifications.
Key Benefits
- Universal SPDT Switching: Offers flexible wiring configurations with Normally Open (NO) and Normally Closed (NC) terminals for HVAC control circuits.
- Dual 1/4" Barb Ports: Simplifies the installation of silicone or aluminum pressure tubing for accurate differential monitoring.
- High Altitude Compatibility: Facilitates reliable operation in specialized heating applications where standard switches may fail.
- OEM Reliability: Ensures exact mechanical fit and electrical performance when replacing obsolete models like PPS10175-3044 or FS4197-171.
- Enhanced System Safety: Prevents unsafe ignition cycles by verifying proper combustion air flow and venting integrity.
Common Questions
How do I wire the Reznor 193808 if my old terminals are different?
Newer production runs may feature updated terminal sizes (1/4" vs 3/16"). It is common practice for technicians to crimp on the provided quick-connect terminals to match the Common (C), Normally Open (NO), and Normally Closed (NC) posts on the new switch.
What does it mean if my pressure switch stays open?
A switch that fails to close usually indicates a restriction in the flue, a failing inducer motor, or cracked tubing. After verifying the 1/4" barb connections are secure, check the pressure differential against the switch's rating to confirm if the issue is the part or the system airflow.
Can this be used on dual-tubing systems?
Yes, the dual barb connection allows for both positive and negative pressure lines to be attached, providing a highly accurate differential reading required for high-efficiency Reznor duct furnaces and unit heaters.
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.
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
The Reznor 193808 Pressure Switch is a high-performance SPDT (Single Pole Double Throw) combustion air proving switch designed for precise pressure regulation in commercial and industrial HVAC equipment. This OEM-certified component features dual 1/4" barb connections for seamless integration into differential pressure sensing loops. Engineered for high-altitude applications and compatible with various Reznor heating units, it ensures the induction fan is generating sufficient negative pressure before allowing the ignition sequence to proceed. As a critical safety control, the 193808 air pressure switch monitors the pressure differential across the heat exchanger, protecting the system from venting obstructions or blower failures. With its robust SPDT switch configuration, this part provides both normally open and normally closed contact sets, allowing for versatile wiring in multiple control circuit designs. Professionals rely on this Reznor replacement part for its reliability in demanding thermal environments and exact factory specifications.
Key Benefits
- Universal SPDT Switching: Offers flexible wiring configurations with Normally Open (NO) and Normally Closed (NC) terminals for HVAC control circuits.
- Dual 1/4" Barb Ports: Simplifies the installation of silicone or aluminum pressure tubing for accurate differential monitoring.
- High Altitude Compatibility: Facilitates reliable operation in specialized heating applications where standard switches may fail.
- OEM Reliability: Ensures exact mechanical fit and electrical performance when replacing obsolete models like PPS10175-3044 or FS4197-171.
- Enhanced System Safety: Prevents unsafe ignition cycles by verifying proper combustion air flow and venting integrity.
Common Questions
How do I wire the Reznor 193808 if my old terminals are different?
Newer production runs may feature updated terminal sizes (1/4" vs 3/16"). It is common practice for technicians to crimp on the provided quick-connect terminals to match the Common (C), Normally Open (NO), and Normally Closed (NC) posts on the new switch.
What does it mean if my pressure switch stays open?
A switch that fails to close usually indicates a restriction in the flue, a failing inducer motor, or cracked tubing. After verifying the 1/4" barb connections are secure, check the pressure differential against the switch's rating to confirm if the issue is the part or the system airflow.
Can this be used on dual-tubing systems?
Yes, the dual barb connection allows for both positive and negative pressure lines to be attached, providing a highly accurate differential reading required for high-efficiency Reznor duct furnaces and unit heaters.
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.
