Carrier® Low Ambient Control Accessory Kit

FEATURES

The head pressure control kit regulates outdoor (condenser) fan speed during cooling mode operation. A temperature sensor mounted on a return bend of the outdoor (condenser) coil controls the speed of approved outdoor fan motors in order to maintain a constant head pressure in the outdoor coil. The control is connected to the single outdoor fan motor.

When properly installed, the control will maintain the appropriate head pressure at low ambient temperatures between 40°F (4.4°C) and 0°F (–17.8°C). The controller will not be activated until the outside air temperature is below 40°F (4.4°C). The unit without the low ambient kit is rated for 40°F (4.4°C) outside air.