American Power Conversion Central Air Conditioning System manual Up Down Horizontal

Operation: Set Up System Configuration

#PCIOMs. Set the number of Programmable Customer Input/Output Modules (PCIOMs) installed in the user interface box. This setting controls the number of input contacts and output relays available in the Input/Output menu.

See “Set Up Contacts and Relays” on page 13 to set up the contacts and relays from the display interface.

See the Installation Manual to connect the contacts and relays to the Main Module.

#Modules in Sys. Indicate the number of Modules in this System. Up to three Modules can be joined together to form a single System.

Air Filter. Set the type of air filters installed in the Modules of this System to either standard or high efficiency.

Fast Startup. Set the System to bypass the normal start-up sequence and delay the next time power is applied to the System.

Fast Startup is not recommended for typical installations.

Note

Airflow. Set the airflow pattern for the Modules in this System:

•Up

•Down

•Horizontal

Dehum Capacity. The Dehum Capacity setting does not apply to Systems without compressors. For Systems with compressors (direct expansion), the dehumidify mode can be set to use half capacity or full capacity of the cooling coil.

•Half capacity—uses one compressor and half of the cooling coil to dehumidify. Rooms with small heat loads should use half capacity to avoid over-cooling while dehumidifying.

•Full capacity—uses the entire coil and both compressors.

Module Rot. The Module Rot. setting does not apply to Systems without compressors. For Systems with compressors (direct expansion), the System rotates the order in which the compressors are engaged to equalize the total number of hours that each compressor runs. Set the number of hours at which to change the order in which the compressors are engaged. A setting of zero indicates that the order in which the compressors are engaged should not be changed.

Refrigerant. The Refrigerant setting applies only to Systems with compressors. Set the type of refrigerant charge used in the direct expansion refrigeration system.

NetworkAIR IR Operation, Maintenance, and Troubleshooting 7