InRoom Direct Expansion The APC ACPDX21-86 is a perimeter and portable cooling unit for wiring closets, server rooms, and data centers. APC's InRoom Direct Expansion suite of products are built-to-order and available in five cabinet sizes. These energy efficient solutions are available in air-, water-, and glycol-cooled configurations with multicool and economizer options to meet the needs of every application. Room Air Distribution The InRoom downflow system draws warm exhaust air in through the top of the unit and cools it. The cool air is distributed back into the room through a raised floor plenum. These systems are ideal for areas with raised floors greater than 305 mm (10 in) high. Upflow systems draw warm exhaust air in through the front of the unit. The warm exhaust air is then cooled and discharged back into the room through a plenum or ductwork. Upflow systems are ideal for areas without a raised floor, but can also be used in a raised floor environment. The InRoom precision air conditioner delivers high volume airflow to help eliminate hot spots in densely populated environments. Efficiency and Reliability The use of energy efficient, direct drive fans along with fewer moving internal parts eliminate most potentials for failure. Scroll compressor technology provides unparalleled efficiency and constant, reliable operation with an ability to withstand liquid refrigerant slugging' which is a major cause of compressor failure. Refrigeration System and Compressor The refrigeration system operates under a master controller for greater efficiency and accuracy. Suction and discharge pressures are monitored and electronically controlled. The scroll compressors are designed for year-round operation with a 15-year life expectancy. The controller microprocessor provides real-time suction and discharge pressure readings reported by transducers installed on the refrigeration system. For compressor protection, the InRoom precision air conditioner utilizes charge isolation and crank case heaters during off cycles. This eliminates the threat of liquid refrigerant migration that could lead to compressor slugging and lubrication issues.
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APC ACPDX21-86
Precision Cooling System
The APC ACPDX21-86 offers many benefits: Availability: - 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.
- Steam humidifier - Humidity is managed through a self-contained steam canister humidifier for maximum efficiency and ease of maintenance. The pure-steam canister maintains consistent capacity output, and requires very little scheduled maintenance.
- Scroll compressors- Utilize few moving parts for increased reliability and life expectancy.
Total Cost of Ownership: - Variable speed fans- Variable speed fans reduce energy consumption during off-peak cooling periods.
- Green Refrigerant - Environmentally friendly refrigerant that can offer LEED points.
- Electric Reheat - Prevents overcooling during dehumidification.
Serviceability : - Front service access - The system has full service, front access for routine servicing of components. Front access also narrows the footprint of the system making it possible for units to be placed side by side.
Manageability: - Redundant group control- Allows up to 4 groups of precision air conditioners to communicate with each other for redundancy, demand fighting prevention, mode assist, and global sharing of certain settings.
- Microprocessor controller- Provides proactive control and real-time monitoring via a four line, eighty character, alphanumeric display.
- Network 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.
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