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Utilizing this genuine Williams furnace part ensures that your repair matches the manufacturer's original safety specifications for airflow and thermal response
For rooftop or outdoor installs
Extended Temperature Range: Rated for continuous operation up to 400
always use a factory-stamped #47 burner orifice like the 84853
Precision-threaded design allows for straightforward removal with a standard 1-5/8" hex socket
Trane CNT1220 Limit Switch Utilizing this genuine Williams furnaceThe Trane CNT1220 (officially updated to CNT01220) is a high limit thermal safety control engineered for precise HVAC over temperature protection. Designed as a direct OEM replacement part, this 160F auto limit switch monitors the supply plenum temperature to prevent heat exchanger damage or unsafe operating conditions. Utilizing a normally closed SPST (Single Pole Single Throw) contact configuration, it interrupts the gas valve or heating circuit