Designed for compatibility with Robertshaw 1890 and 1898 series orifices

000 to 415

Standard Fitting: Equipped with a knurled 11/32-32 DL male nut for a tool-secure connection to the power unit

and Luxaire units

Lennox 27K79 Limit Designed for compatibility with RobertshawThe Lennox 27K79 175F Limit is a critical safety component designed for precise thermal regulation within the furnace plenum. As a primary high limit control, this genuine OEM replacement part is engineered to interrupt the electrical circuit to the gas valve if internal temperatures exceed the 175F threshold, effectively preventing heat exchanger damage and ensuring system safety. This furnace high limit switch features an automatic reset mechanism