What is the procedure for adjusting a bypass flame on a BJ thermostat?

The procedure for adjusting a bypass flame on a BJ thermostat involves turning the thermostat to approximately 300 degrees and then making adjustments downward. This method allows for an initial setting that is high enough to activate the flame safely, ensuring that the system operates effectively and allows for precise calibration of the bypass flame.

When the thermostat is turned to this temperature, it enables the system to properly regulate the burner output and gives the technician a clear reference point. After reaching this initial setting, the adjustment can be fine-tuned downward to establish the optimal bypass flame. This is crucial for achieving accurate temperature control while maintaining safety and efficiency in the system's operation.

The other methods, such as simply turning the thermostat to maximum or increasing the gas flow prior to making adjustments, do not provide the structured approach necessary for precise calibrations and could lead to unsafe operating conditions. Waiting for the burner to cool down before adjusting is also not practical, as it delays the ability to achieve the desired operating conditions efficiently.