Smith BTH Cyclone series

the Armstrong C3510-12 is identical to the 1AV-3/4-300 model

providing precise fitment that aftermarket alternatives often lack

allowing for precise notification of system pressure fluctuations

Trane CNT4356 Primary Control 324846-701 Smith BTH Cyclone seriesThe Trane CNT4356 Primary Control is a critical direct service replacement component engineered for high reliability oil furnace and boiler burner management. As a veteran grade HVAC part, this burner primary control manages the ignition cycle, monitors the CAD cell for flame verification, and executes safety lockouts to prevent hazardous oil accumulation in the combustion chamber. When you are on a service call for a Trane furnace that wont fire, the