Description
The Nordyne 632550R is an OEM replacement pressure switch engineered for reliable performance in Nordyne-family heating systems. Designed as a Normally Open (NO) switch, it monitors draft pressure to confirm safe combustion conditions before allowing burner operation — a critical safety function in modern gas furnaces and air handlers.
How It Works
This pressure switch opens and closes in response to negative pressure (inches of water column) generated by the draft inducer motor. When the inducer establishes adequate draft, the switch closes to signal the control board that combustion conditions are safe. If draft pressure falls outside acceptable limits, the switch remains open, preventing ignition and protecting the heat exchanger and flue system from damage.
Key Features
- Switch Type: Normally Open (NO)
- Open Set Point: 1.0″ W.C.
- Close Set Point: 0.7″ W.C.
- OEM Nordyne replacement part — direct-fit for compatible models
- Monitors inducer draft pressure for safe furnace ignition sequencing
- Helps prevent nuisance lockouts caused by failed or worn pressure switches
- Durable construction for long service life in residential and light commercial applications
Application
The 632550R is a genuine Nordyne OEM pressure switch suitable for use in Nordyne, Gibson, Frigidaire, Tappan, Westinghouse, and other Nordyne-branded furnace and air handler product lines. Always verify compatibility with the equipment model number before installation.
Installation Notes
- Replace as part of routine furnace maintenance or when diagnosing pressure switch fault codes
- Inspect inducer motor, hoses, and condensate drain before replacing the switch to rule out root-cause issues
- Ensure all hose connections are secure and free of cracks or blockages after installation
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