RadioFrame Networks Inc DH2 User Manual

Page of 164
RadioFrame System 
Pre-Installation 
RFN_3.1 Beta
  
27 
• 
Proper hardware shall be used to secure equipment. 
• 
Convected heat transfer from one piece of equipment rack to another shall be 
considered. Heat baffles may be required. 
3.3.1 Mounting 
The front panels of the NCU, ACU, iSC-3s, CSU, PDU and EAS are 19” wide to 
allow for installation into 19” wide cabinets. All of this equipment is typically 
installed into a 19” wide cabinet prior to shipment to the site. For rack installation 
instructions for the NCU and ACU, see Appendix C NCU and ACU Main Rack 
Installation.  
3.3.1.1 
Plumb and Squareness 
Equipment shall be level and plumb. Equipment level shall be tested on a known 
flat surface in at least two directions to verify accuracy. 
Equipment shall be parallel or perpendicular to the surrounding walls and 
adjacent installed equipment. 
3.3.1.2 Anchoring 
Anchoring is the mechanical fastening of the communications equipment to 
suitable locations using hardware acceptable for the application. 
Although every installation is unique, certain methods for anchoring shall be 
adhered to for all installations. Typically, at least four anchor points shall be used 
on each item of equipment mounted to the floor. The only exception is when the 
equipment manufacturer supplies other than four mounting points. 
3.3.1.3 
Mounting on Concrete Floors 
Equipment racks or cabinets should be positioned and anchored to the floor 
using preferred mounting methods. In general, observe the following: 
• 
An anchor specifically designed for concrete shall be used. The preferred 
method for anchoring racks, or other ancillary equipment to concrete floors is 
to use flush-mount expansion anchors properly sized for the application. 
Flush mount expansion anchors do not extend above the surface of the floor 
and provide an easy bolt down. They also provide the required pullout and 
shear strength. If at a later time equipment needs to be moved, flush mount 
expansion anchors do not get in the way. 
 
NOTE: 
 Unless an isolating mounting scheme is used (refer to section 3.3.1.4 
Isolated Mounting, next in this section), ensure that no anchors come in 
contact with reinforcing rods or wire mesh buried in the concrete; the rack 
shall be electrically isolated from any other equipment or materials at the site.