Westinghouse 632432R Furnace Pressure Switch 0.70 in Wc

Product Description

The Westinghouse 632432R is a single-port furnace pressure switch rated at 0.70 inches water column (WC). Pressure switches monitor the negative pressure produced by the inducer motor during furnace operation. When the inducer establishes the correct draft, the switch closes to allow the ignition sequence to proceed. If draft pressure falls outside the set point, the switch opens and locks out the burner, protecting the heat exchanger and flue system. Licensed HVAC technicians install and replace this component as part of routine furnace diagnostics and maintenance.

The 632432R is designed for use on L1RA Upflow and Horizontal furnaces. This single-port configuration is typical of induced-draft gas furnace applications where one pressure tap on the inducer housing or flue collector box is used to verify adequate combustion airflow before ignition is permitted.

Key Features

• Rated set point of 0.70 inches water column (WC)
• Single-port design for straightforward hose connection to inducer tap
• Closes on verified draft to enable ignition sequence
• Opens on loss of draft to lock out burner and protect heat exchanger
• OEM-style replacement for L1RA Upflow and Horizontal furnace applications

Compatibility

Designed for use on L1RA Upflow and Horizontal furnaces as specified by the manufacturer.

Installation Notes

Pressure switch replacement is performed by a licensed HVAC technician. Shut off power to the furnace at the disconnect or breaker and turn off the gas supply before beginning any service. The hose connecting the switch to the inducer or collector box should be inspected for cracks or blockage before installing the replacement switch. Always verify draft pressure with a manometer after installation to confirm the system operates within design parameters.

Technical Specifications

• Type: Pressure Switch
• Set Point: 0.70 inches WC
• Port Configuration: Single Port
• Orientation: Upflow and Horizontal

Standard Information

• Brand: Westinghouse
• Manufacturer Part Number: 632432R