Weil McLain 389-900-221 Control Panel R-22 while integrated reverse wiring protection

while integrated reverse wiring protection safeguards the electronics during commissioning

Precision Metering: Provides stable superheat regulation to enhance cooling performance and energy efficiency

Accurate calibration of the L195-40F temperature differential is vital for preventing heat exchanger damage and ensuring consistent airflow monitoring

water pooling in the burner compartment

provided you cap off the unused speed leads with wire nuts

Weil McLain 389-900-221 Control Panel R-22 while integrated reverse wiring protectionThe 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