availabilityActive response control - Monitors and actively adjusts cooling capacity to ensure proper server inlet temperatures. Through the microprocessor controller, visibility into the operation and status of the unit is provided.Electronic expansion valve - Refrigerant flow optimization at any load and temperature conditions. Continuous indirect refrigerant charge monitoringRedundant Components - Single points of failure in the system have redundant components to maintain availability and reliability.Multi-functional Microprocessor Controller - Allows the units to restart after a power failure without intervention; Allows for room level redundancy with up to ten units operating in a group; User friendly navigation with icon based displays to indicate mode of operation as well as room conditions; Allows for communication with multiple Building Management System protocols.Direct drive motors - Stress on bearings is nearly eliminated, increasing useful life. Allows integral fan/motor assembly to be factory balanced, which lowers vibration and expedites startup.energy managementLocal area network - Creates a shared control between all the available resources for maximum energy efficiency and controlled management of the group during emergency situationsNetwork interface - Provides management by connecting the device directly to the network with a dedicated IP address, avoiding the need for a proxy such as a server. Management is available via Web browser, Telnet or SSH. Notification features inform you of problems as they occur.Building Management Systems - Units are designed to work with the most common BMS systems including BACnet and Modbus.Automatic Floor Pressurization System - Ensures stable airflow pressurization under floor regardless of changes made above the floorserviceabilityService monitoring - All the monitoring devices on board the unit allow for preventive maintenance and a check of the working condition of the system while its in operation.Easy service access - Allows for all serviceable components to be replaced/maintained by easily accessible panels/doors.Operational Service - Allows critical components to be maintained/replaced while the system is in operation.total cost of ownershipTandem compressors - Quiet and efficient operation of compressors, connected on a common refrigerant circuit for staged capacity control (not available for some models/configuration)Economization - Achieved by utilizing cool ambient air during winter months to take advantage of economizer hours and eliminating compressor operation.Optimized management - Connection between the Computer Room Air Conditioners and the chillers guarantees energy efficiency, based on real instantaneous load conditions (optional)Modular strategy - Modular design of the mechanical and control systems allow for gradual build-up of the cooling infrastructure to match the cooling demand of the facility. This greatly reduces CAPEX expediture and provides deferred investment throughout the life of the facility.Electronically Commutated Fans - Provide the highest efficiency and reduce total power consumption by matching the airflow requirements to the heat load of the data center.