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

while integrated reverse wiring protection safeguards the electronics during commissioning

Does the 1-2 PSI spring require a specific mounting position

this general service valve is engineered for a high flow capacity with a 5

Product Specifications & Key Benefits: Precise Calibration: Fixed -

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

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