Nordyne Intertherm 632622 Pressure Switch M7 Models

Product Description

The NORDYNE INTERTHERM 632622 is a pressure switch designed for use in M7 model furnace systems. Pressure switches are safety components that monitor draft inducer operation by detecting negative air pressure in the flue gas path. If the switch does not sense the correct pressure differential, it prevents the furnace from moving forward in the ignition sequence, protecting the system from unsafe operation. This part is installed by licensed HVAC technicians during routine maintenance, component replacement, or troubleshooting of furnace lockout conditions.

The 632622 is specified for M7 model furnaces in the NORDYNE INTERTHERM product line. These furnaces are commonly found in residential applications including manufactured housing and site-built homes. Technicians typically encounter this switch when diagnosing pressure switch fault codes, dealing with inducer-related lockouts, or replacing a switch that has failed open or closed due to age, moisture, or hose degradation.

Key Features

• Safety switch that monitors draft inducer negative pressure to enable ignition sequence
• Designed as a direct OEM replacement for M7 model furnaces
• Prevents furnace operation when proper flue draft pressure is not detected
• Exact part number match ensures correct setpoint and electrical termination

Compatibility

Designed as an OEM replacement pressure switch for NORDYNE INTERTHERM M7 model furnaces.

Installation Notes

Pressure switch replacement is performed by licensed HVAC technicians. Disconnect power to the furnace at the disconnect switch or breaker before beginning any service work. Inspect the rubber hose connecting the switch to the inducer housing for cracks, blockages, or moisture before condemning the switch itself, as hose faults are a common cause of pressure switch codes. Follow all local mechanical codes and manufacturer wiring diagrams when reconnecting the switch harness.

Technical Specifications

• Application: M7 Model Furnaces
• Component Type: Pressure Switch

Standard Information

• Brand: NORDYNE INTERTHERM
• Manufacturer Part Number: 632622