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This specific controller is designed for steam boiler applications
allowing it to maintain reliable operation in high-ambient environments up to 70°C
reducing carbon monoxide risk and emergency service calls
Simplified Serviceability: The radially-split body and three-piece construction allow for rapid component replacement without disconnecting existing piping
Lennox 35K61 Limit Switch 30067439-890 This specific controller is designedThe Lennox 35K61 Limit Switch is a critical high temperature safety control designed for specific Lennox gas fired furnaces and air handlers. This fixed temperature limit control features a 7 inch insertion length, making it compatible with deep heat exchanger configurations where accurate sensing of the primary heat zone is essential. With an auto reset configuration, this switch is calibrated for an open temperature range of 195F to 225F, ensuring