Allied Air 56W26 Furnace Limit Control Switch

Product Description

The ALLIED AIR 56W26 is a furnace limit control switch designed to protect heating equipment from overtemperature conditions. This auto-reset switch monitors supply air or heat exchanger temperatures and interrupts the burner circuit when temperatures exceed the set limit range of 185 to 215 degrees F, then automatically resets once conditions return to normal. The switch features a 3 inch insert length and is identified by its pink and white color coding. It is installed by licensed HVAC technicians as part of routine furnace service or component replacement.

This limit control switch is intended for use in residential and light commercial gas furnaces where overtemperature protection is required. The auto-reset function makes it suitable for applications where nuisance lockouts from brief temperature spikes must be minimized. It is a direct-replacement style component used during furnace tune-ups, heat exchanger service, or limit switch failure diagnostics.

Key Features

• Auto-reset operation returns the switch to normal function once temperatures drop below the limit threshold
• Operating range of 185 to 215 degrees F suits a wide variety of residential furnace applications
• 3 inch insert length for proper depth placement in the furnace plenum or heat exchanger compartment
• Pink and white color coding aids identification and replacement verification in the field

Compatibility

Designed as an OEM-style replacement limit control switch for residential and light commercial gas furnaces requiring a 3 inch insert, auto-reset style limit with a 185 to 215 degrees F operating range.

Installation Notes

Limit control switches are installed by qualified HVAC technicians. Shut off power to the furnace at the disconnect and turn off the gas supply before removing or installing this component. Verify insert length and temperature rating match the original switch before installation. Work performed on gas furnaces should comply with applicable local codes and the IFGC.

Technical Specifications

• Type: Limit Control Switch
• Used On: Furnace
• Temperature Range: 185 to 215 degrees F
• Reset Type: Auto Reset
• Insert Length: 3 inches
• Color Code: Pink and White
• Weight: 0.056 pounds

Standard Information

• Brand: ALLIED AIR
• Manufacturer Part Number: 56W26