Description
The Nordyne 632425R is an OEM replacement SPST (Single-Pole, Single-Throw) pressure switch engineered for precise draft and airflow sensing in Nordyne-family heating systems. Designed to protect equipment from unsafe operating conditions, this switch monitors negative pressure within the venting and inducer circuit and opens or closes the control circuit at its calibrated set point of -0.55″ water column (w.c.).
Key Features
- OEM Nordyne replacement pressure switch — direct-fit reliability
- SPST (Single-Pole, Single-Throw) switching action for straightforward circuit control
- Calibrated set point of -0.55″ w.c. for accurate draft sensing
- 1/4″ barbed port connection for secure hose attachment
- Protects against inducer motor failure, blocked flue, or inadequate draft conditions
- Compact design for easy installation in tight furnace compartments
Specifications
- SKU: 632425R
- Brand: Nordyne
- Switch Type: SPST (Single-Pole, Single-Throw)
- Set Point: -0.55″ w.c.
- Port Connection: 1/4″ Barbed
- Application: Furnace draft / inducer pressure sensing
Application
This pressure switch is a critical safety component in Nordyne gas furnaces. It verifies that the draft inducer is operating correctly and that proper negative pressure is established before allowing the gas valve and ignition sequence to proceed. Replacing a failed or out-of-calibration pressure switch with the correct OEM part ensures your system operates safely and efficiently, preventing nuisance lockouts and protecting heat exchangers from combustion gas spillage.
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