Westinghouse 626337R Gas Furnace Fan Limit Control

Product Description

The WESTINGHOUSE 626337R is a fan limit control designed for gas furnace applications. This component monitors heat exchanger temperature and controls the blower fan, starting it when the heat exchanger reaches the set temperature and shutting it down when temperatures fall below threshold. It also provides high-limit protection by cutting the burner if the furnace overheats. The 626337R operates at a 115 degrees F fan-on setpoint, making it suitable for standard residential gas furnace configurations. Installation is typically performed by licensed HVAC technicians as part of a routine component replacement or system service call.

This fan limit control is used in gas furnace systems where integrated blower sequencing and high-limit protection are required. It fits into the furnace plenum or heat exchanger compartment, where it directly senses air or surface temperature. Typical applications include residential forced-air gas furnaces. The 115 degrees F setpoint governs when the blower is energized after burner ignition, helping to prevent delivery of cold air at the start of a heating cycle.

Key Features

• Fan-on setpoint of 115 degrees F for blower control sequencing
• Provides high-limit protection to shut down the burner on overheat condition
• Designed for gas furnace plenum or heat exchanger temperature sensing
• OEM-style replacement for straightforward field swap-out

Compatibility

Designed as an OEM-style replacement fan limit control for residential gas furnace systems. Refer to your furnace service manual or cross-reference the original part number to confirm fitment before installation.

Installation Notes

Fan limit controls are installed and replaced by licensed HVAC technicians. Always disconnect electrical power to the furnace at the disconnect switch or breaker before removing or installing this component. Ensure the replacement setpoint matches the original equipment specification. Work should comply with applicable local mechanical and electrical codes, including NEC guidelines for low-voltage and line-voltage furnace control wiring.

Technical Specifications

• Fan-On Setpoint: 115 degrees F
• Type: Fan Limit Control
• Application: Gas Furnace

Standard Information

• Brand: WESTINGHOUSE
• Manufacturer Part Number: 626337R