Allanson Transformers 421-BT636 Transformer 30067439-890 Field testing should reveal a

Field testing should reveal a resistance of no more than 75 Ohms at room temperature

Precise Pressure Calibration: Factory-set to open at 440 PSI to protect high-side components from extreme pressure spikes

A flashing red light indicates the anti-short cycle timer is active

Accurate 3-15 PSI Correlation: Specifically calibrated to translate standard pneumatic signals into readable temperature data for rapid diagnostics

Allanson Transformers 421-BT636 Transformer 30067439-890 Field testing should reveal aThe Allanson 421 BT636 is a heavy duty universal ignition transformer designed for reliable spark ignition in industrial and residential oil burners. Engineered with a 120Vac supply voltage and a 10,000Vac secondary voltage at 23mA, this unit ensures a consistent high voltage arc for efficient combustion. Featuring a mid point ground configuration, it provides stable electrical performance and reduced electromagnetic interference. As a direct