Cabletron Systems 2H253-25R User Manual

Installing the Device

Installation

The following two subsections provide guidelines for installation on a tabletop or shelf.

Tabletop and shelf installations must be within reach of the network cabling and meet the 
requirements listed below:

Locate the 2H253-25R within seven feet of an appropriately grounded power receptacle that 
meets the power supply requirements listed in 

In a shelf installation, the shelf must support 13.5 kg (30 lb) of static weight for each 
2H253-25R.

Maintain a temperature of between 5°C (41°F) and 40°C (104°F) at the installation site with 
fluctuations of less than 10°C (18°F) per hour.

Maintain a 2-inch clearance from the left, right, and rear sides of the device to provide adequate 
ventilation.

For a tabletop or shelf installation, locate the 2H253-25R within seven feet of its power source and 
on an unrestricted free surface area as shown in 

 for power 

connection instructions.

To ensure proper ventilation and prevent overheating, leave a minimum clearance space 
of 5.1 cm (2.0 in) at the left, right, and rear of the 2H253-25R.