HP 11642 HP 11000 G2 Series Rack User Guide - Page 6

• The overall system AC current load must not exceed 80% of the branch circuit AC current rating. • If a UPS is used, the load should not exceed 80% of the marked electrical current rating for the UPS. This equipment must be installed in accordance with local and regional electrical regulations governing the installation of information technology equipment by licensed electricians. This equipment is designed to operate in installations covered by the Nation Electric Code (ANSI/NFPA-70, 1993) and the code for protection of Electronic Computer/Data Processing Equipment (NFPA-75, 1992). For electrical power ratings on options, refer to the products rating label or user documentation supplied with that option. Temperature requirements To ensure continued safe and reliable equipment operation, install or position the rack in a well-ventilated, climate-controlled environment. The operating temperature inside the rack is always higher than the room temperature and is dependent on the configuration of equipment in the rack. Check the TMRA for each piece of equipment before installation. CAUTION: To reduce the risk of damage to the equipment when installing third-party options: • Do not permit optional equipment to impede airflow around the component or to increase the internal rack temperature beyond the maximum allowable limits. • Do not exceed the manufacturer's TMRA. Airflow requirements HP rack-mountable products typically draw in cool air through the front and exhaust warm air out through the rear of the rack. The front door of the rack, therefore, must be adequately ventilated to enable ambient room air to enter the rack, and the rear door must be adequately ventilated to enable the warm air to escape the rack. Do not block the ventilation apertures. Blanking panels If the front of the rack is not completely filled with components, the remaining gaps between the components can cause changes in the airflow, which can adversely affect cooling within the rack. Cover these gaps with blanking panels. Optimum environment Specific requirements for space, power, temperature, and airflow must be met to provide optimum performance with minimum maintenance for your rack environment. For additional information, refer to the Best Practices document on the HP website (http://h18004.www1.hp.com/products/servers/proliantstorage/racks). General component placement guidelines Configuration factors 6