Lennox 47K20 Transformer The orange dot is a

The orange dot is a technical identifier indicating that this specific switch is rated for a 250°F high-limit threshold

streamlined aesthetic for commercial HVAC systems where tamper resistance and a minimalist profile are required

Repeated failure usually indicates a 24V short to ground

This 5/8" ODF solder moisture liquid indicator is engineered for high-pressure applications

The Utica-Dunkirk 240011102 Pilot Assembly is a critical combustion component designed for high-efficiency natural gas boilers and heating systems

Lennox 47K20 Transformer The orange dot is aThe Lennox 47K20 Transformer is a heavy duty step down control transformer engineered for high demand HVAC low voltage control circuits. Designed to provide a reliable 24V secondary output from a 208 240V primary input, this 40VA Class 2 transformer ensures consistent power delivery to contactors, relays, and integrated furnace control boards. This unit is a direct OEM replacement part and is technically identical to the Lennox 47K2001 and the