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Accurate calibration of the L195-40F temperature differential is vital for preventing heat exchanger damage and ensuring consistent airflow monitoring
provided you cap off the unused speed leads with wire nuts
while integrated reverse wiring protection safeguards the electronics during commissioning
enhancing application flexibility
Weil McLain 389-900-221 Control Panel R-22 Accurate calibration of the L195-40FThe Weil McLain 389 900 221 BCP 8W is a high performance multiple boiler control panel engineered for hydronic applications requiring precision staging. For technicians managing multi unit configurations, this hydronic heating controller manages up to 8 stages out of the box, with the ability to expand to 24 stages using extension modules. By incorporating outdoor reset control, the BCP 8W automatically adjusts the system set point based on ambient