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Using it on smaller units may cause misalignment
For manual overrides or system testing
This kit typically contains the cap retaining clip
avoiding the calibration issues common with universal clones
maximizing the AFUE rating of the HVAC system
AERCO 123970 Flame Sensor 318973-401 Using it on smaller unitsThe AERCO 123970 Flame Sensor is a critical safety component engineered for precision flame detection in high performance heating systems. Specifically designed for use in AERCO Benchmark boilers and Innovation series water heaters, this flame rod utilizes flame rectification technology to monitor the combustion process. By providing instantaneous flame sensing, the 123970 ensures that the gas valve remains open only when a consistent ignition is