Allanson Transformers 2721-668 Transformer 30067439-890 including 18 AWG flame sensor

including 18 AWG flame sensor lead

What causes a 160-degree limit switch to trip repeatedly

provided the mounting profile matches

this thermocouple is designed to provide the necessary 20-28 mV range required by standard standing pilot gas valves and safety switches

This indicates the auto limit switch is calibrated to open (break the circuit) at 110

Allanson Transformers 2721-668 Transformer 30067439-890 including 18 AWG flame sensorThe Allanson 2721 668 Ignition Transformer is a heavy duty, iron core electromagnetic unit designed for reliable oil burner ignition. This transformer operates on a 120Vac supply voltage and delivers a high voltage 10,000Vac secondary output at 23mA. Engineered with a midpoint ground configuration, it ensures stable arc performance and consistent combustion in residential and commercial heating systems. As the direct replacement for 2721 668SF models,