Westinghouse 632493R Furnace Pressure Switch 0.60 in Wc Spst

Product Description

The WESTINGHOUSE 632493R is a furnace pressure switch rated at 0.60 inches water column (WC) with a single-port, single-pole single-throw (SPST) configuration. Pressure switches monitor the negative pressure created by the draft inducer motor during furnace operation. When the inducer establishes proper airflow, the switch closes and signals the control board to continue the ignition sequence. If pressure drops below the set point, the switch opens and locks out the furnace as a safety measure. This part is intended for installation by licensed HVAC technicians servicing gas furnaces.

The 632493R is designed for use on the G7SC-1 Upflow/Horizontal furnace. This switch is appropriate for residential gas furnace applications where the appliance is installed in an upflow or horizontal orientation. Pressure switches in this category are a common service item, typically replaced when a furnace fails to advance past the inducer-proving stage of the startup sequence.

Key Features

• 0.60 inches WC setpoint for accurate draft proving during furnace startup
• SPST configuration provides a simple open/close signal to the furnace control board
• Single-port design for straightforward hose connection to the inducer housing or collector box
• Serves as a safety interlock, shutting down the ignition sequence when adequate draft is not confirmed
• Designed for G7SC-1 Upflow/Horizontal furnace applications

Compatibility

Designed for use on the G7SC-1 Upflow/Horizontal furnace as specified by the manufacturer.

Installation Notes

Installation should be performed by a licensed HVAC technician. Before servicing, shut off power to the furnace at the disconnect switch and close the manual gas shutoff valve. Inspect the rubber pressure hose and port for cracks or blockages before connecting the new switch, as a faulty hose is a common cause of nuisance pressure switch trips. Refer to the furnace wiring diagram and follow all applicable local codes during replacement.

Technical Specifications

• Type: Pressure Switch
• Pressure Setpoint: 0.60 inches WC
• Switch Configuration: SPST (Single-Pole Single-Throw)
• Port Configuration: Single Port
• Application: Upflow/Horizontal Furnace

Standard Information

• Brand: WESTINGHOUSE
• Manufacturer Part Number: 632493R