Johnson Controls P66BBB-1 Pressure Actuated Motor Speed Control

The Johnson Controls P66BBB-1 Pressure Actuated Motor Speed Control is a rather complicated part that controls motor speed in HVAC systems depending on the pressure. The pressure sensor relays electronic signals to this control system whereby the system alters the motor speed correspondingly to ensure that the ideal system pressure and airflow are achieved. It offers efficient HVAC operation since it is capable of perfectly synchronizing motor output with the existing pressure conditions in ducts or ventilation systems. One advantage is that energy efficiency is improved through the reduction of motor speed when the system load is low.