The Johnson Controls P66AAB-10C PRESS ACT MTR SPEED Controller; 190/250# OPER RANGE; 140/350# PRESS RNGE 16% LINE START VOLT; 120″ CAP
The P66 Series Electronic Fan Speed Controls are pressure-actuated electronic motor-speed controllers designed primarily to control condenser fan motors on Heating, Ventilating, Air Conditioning, and Refrigeration (HVAC/R) applications. These controls vary the supply voltage to the fan motor in response to the sensed refrigerant pressure, providing direct response to changes in condenser pressure, regardless of the variations in air delivery curves. P66 controls are available with one or two pressure sensor inputs. In dual sensor models, the control selects the input with the greatest demand.