Westinghouse 626352R Roll-out Limit Switch 250F Manual Reset

Product Description

The WESTINGHOUSE 626352R is a manual-reset roll-out limit switch rated at 250 degrees F, designed for single package gas heating equipment. This safety device monitors burner flame roll-out conditions. When the sensed temperature exceeds the 250 degrees F trip point, the switch opens the control circuit and locks out the burner, preventing equipment damage and reducing fire risk. Manual reset is required before the unit can restart, ensuring a technician physically verifies and corrects the roll-out condition before restoring operation. Licensed HVAC technicians install and service this component as part of routine safety system maintenance and diagnostics.

This roll-out limit switch is used on the R4GC series single package gas heating units. It is installed in the burner compartment where it can detect abnormal flame movement outside the heat exchanger. Single package gas heating systems are commonly found in light commercial and residential rooftop or ground-level applications. The manual reset design is standard for roll-out protection because automatic reset would allow repeated restart attempts without confirming the root cause of the roll-out event.

Key Features

• Trip temperature rated at 250 degrees F for roll-out detection
• Manual reset button requires technician intervention before restart
• Direct OEM replacement for R4GC series single package gas heating units
• Opens control circuit on trip to lock out burner operation
• Designed to prevent fire hazard from burner flame roll-out conditions

Compatibility

Designed for use on WESTINGHOUSE R4GC series single package gas heating units, specifically model numbers R4GC-024K, R4GC-030K, R4GC-036K, and R4GC-042K.

Installation Notes

Installation and replacement of roll-out limit switches should be performed by a licensed HVAC technician. Shut off gas supply and disconnect electrical power to the unit before beginning any service work. After replacing the switch, investigate and correct the underlying cause of the roll-out condition before pressing the manual reset button and restoring power. Follow all applicable local codes and the equipment manufacturer's service instructions.

Technical Specifications

• Trip Temperature: 250 degrees F
• Reset Type: Manual reset button
• Switch Type: Roll-Out Limit Switch
• Application: Single Package Gas Heating

Standard Information

• Brand: WESTINGHOUSE
• Manufacturer Part Number: 626352R