Westinghouse 632547R Gas Furnace Pressure Switch 0.90/0.80 Wc

Product Description

The WESTINGHOUSE 632547R is a normally open, two-stage pressure switch designed for condensing gas furnaces. It operates at setpoints of 0.90 inches water column (WC) and 0.80 inches WC, monitoring inducer draft pressure to prove safe combustion airflow before allowing ignition. When draft pressure falls outside the calibrated range, the switch interrupts the control circuit to prevent unsafe furnace operation. Licensed HVAC technicians install this switch as a direct OEM-style replacement during routine service or when diagnosing pressure-switch fault codes on compatible condensing furnace platforms.

This pressure switch is rated for use in residential condensing gas furnaces that run a two-stage heating sequence. It is suited for installations where the furnace control board monitors separate high- and low-fire draft conditions. Typical applications include replacement service on mid-to-high efficiency gas furnaces in residential settings where the original switch has failed open, failed closed, or is out of calibration. Compatible model designations are listed in the specifications below.

Key Features

• Normally open (NO) configuration — closes on proof of adequate inducer draft
• Dual setpoints: 0.90 inches WC and 0.80 inches WC for two-stage operation
• Designed for condensing gas furnace draft-proving circuits
• OEM-style replacement for specified WESTINGHOUSE furnace models
• Interrupts control circuit on loss of draft to prevent unsafe ignition

Compatibility

Designed for use on WESTINGHOUSE 080-35C, 080-35C-1, 100-VC, and 100-VC-1 condensing gas furnaces as stated by the manufacturer.

Installation Notes

Pressure switch replacement on a gas furnace must be performed by a licensed HVAC technician. Shut off power to the furnace at the disconnect and set the thermostat to the off position before beginning work. Verify the hose port and tubing diameter match the original switch before connecting the pressure tap. After installation, cycle the furnace through both heating stages and confirm no pressure-switch fault codes are present on the control board.

Technical Specifications

• Type: Pressure Switch
• Switch Action: Normally Open (NO)
• Stages: 2-Stage
• Setpoint 1: 0.90 inches WC
• Setpoint 2: 0.80 inches WC
• Application: Condensing Gas Furnace
• Compatible Models: 080-35C, 080-35C-1, 100-VC, 100-VC-1

Standard Information

• Brand: WESTINGHOUSE
• Manufacturer Part Number: 632547R