Description
Reznor 204326 Pressure Switch Overview
The Reznor 204326 is an OEM pressure switch engineered for use in Reznor heating equipment. Featuring a 0.7″ water column (w.c.) setpoint, this switch monitors draft or combustion air pressure to ensure safe and efficient burner operation. Its single-pole, double-throw (SPDT) switching action provides both normally open and normally closed circuit paths, giving control systems the flexibility to respond to both pressure-present and pressure-absent conditions.
Key Features
- Setpoint: 0.7″ w.c. (water column) pressure differential
- Switch type: SPDT (Single-Pole, Double-Throw) for versatile circuit control
- Dual 1/4″ barb connections for easy hose attachment and secure pneumatic porting
- OEM Reznor replacement part — direct-fit for compatible Reznor heating units
- Monitors combustion air or draft pressure to protect burner operation
- Compact design for straightforward installation in tight equipment spaces
Application
This pressure switch is a direct OEM replacement designed for Reznor gas-fired unit heaters and related heating equipment. It is typically wired into the burner control circuit to verify that adequate combustion air pressure is present before allowing ignition, helping to prevent unsafe operating conditions and nuisance lockouts caused by blocked venting or inducer issues.
Installation Notes
- Always de-energize equipment before servicing or replacing the pressure switch
- Connect 1/4″ ID tubing to both barb ports as directed by the equipment wiring diagram
- Verify setpoint and wiring polarity against the original equipment schematic before startup
- Use only as a direct replacement for the Reznor 204326 or as specified by the equipment manufacturer
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