MotorMaster® Low Ambient Controller for Horizontal Discharge Models

FEATURES

The MotorMaster® is a fan speed control device activated by a temperature sensor. It is specifically designed to control condenser fan motor speed in response to the saturated condensing temperature during operation in cooling mode only. For outdoor temperatures down to -20 °F (-28.9 °C), it maintains condensing temperature at 100 °F ±10 °F.

The mounting control consists of a solid--state circuit on a printed circuit board in an aluminum extrusion, and a sensor assembly to be mounted to a return bend on the unit’s condenser coil. A wire from the sensor is connected to the circuit board in the control box.

Parts necessary for mounting control and sensor assembly are included in the kit. Either assembly can be replaced independently of the other. If any damage to the printed circuit board or components is observed when unpacking control assembly, return for replacement.

The MotorMaster® maintains proper condensing temperature at any ambient temperature down to -20 °F (-28.9 °C). No field adjustments or calibrations are required.