Cisco ASR-920-4SZ-D Hardware Installation Guide

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Cisco ASR 920 Series Aggregation Services Router Hardware Installation Guide
OL-32751-01
Chapter 2 Preparing for Installation
Site Planning
Air Flow Guidelines
Cool air is circulated through the Cisco ASR 920 Series Router by fans located along the back side of
the router.
The internal fans maintain acceptable operating temperatures for the internal components by drawing in
cool air through the vents, and circulating the air through the chassis.
The direction of air flow is from front-to-back.
Figure 2-1 Air Flow in the Cisco ASR 920 Series Routers
To ensure adequate air flow through the equipment rack, it is recommended that you maintain a
minimum clearance distance as mentioned below, at all times.
• front clearance—12.7 cm
• rear clearance—10 cm
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Cisco ASR-920-4SZ-D Specifications

General

Brand	Cisco
Model	ASR-920-4SZ-D
Category	Network Router
Language	English