The Lennox 49L86 Limit Switch is a critical safety component designed for precise thermal regulation within residential and commercial HVAC systems

A weak or split pilot flame is often a symptom of a clogged or damaged pilot orifice

remove the wire leads and use a multimeter set to Ohms

This straightway design component is essential for contractors seeking to restore OEM-spec flow characteristics and prevent liquid slugging or hunting in TXV applications

When integrated with Honeywell V5011 and V5013 valves

Schneider Electric (Barber Colman) 2354-501 Relay 30067439-890 The Lennox 49L86 Limit SwitchThe Schneider Electric (Barber Colman) 2354 501 is a professional grade Pneumodular Diverting Relay designed for high performance pneumatic control systems. Engineered for SPDT switching, this snap acting device is critical for applications requiring precise interlocking functions, such as diverting supply lines between two different branch outputs or feeding exhausting HVAC branch lines based on pressure thresholds. With a robust 60 SCFH air