Air Flow Guidelines - Cisco ASR 902U Hardware Installation Manual

Air Flow Guidelines

Air Flow Guidelines
Cool air is circulated through the Cisco ASR 902 Router by a fan tray located along the right side of the router.
The fan tray maintains acceptable operating temperatures for the internal components by drawing in cool air
through the vents, and circulating the air through the chassis.
The following guidelines will help you plan your equipment rack configuration:
• For horizontal mounting—Air flow is side to side and right to left, as shown in the figure below . To
• For vertical mounting—Air flow is bottom to top, as shown in the figure below . To ensure adequate
Cisco ASR 902 and ASR 902U Aggregation Services Router Hardware Installation Guide
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ensure adequate air flow through the equipment rack, we recommend that you maintain a clearance of
at least 80 mm on each side of the rack at all times.
Figure 29: Cisco ASR 902 Router Chassis Air Flow - Horizontal Mounting
air flow through the equipment rack, we recommend that you maintain a clearance of at least 80 mm
(X) on top and 100 mm (Y) at bottom of the rack at all times.
Preparing for Installation