Installation Instructions
CMS491/492
2
DISCLAIMER
Legrand | AV and its affiliated corporations and
subsidiaries (collectively “Legrand | AV”), intend to make this
manual accurate and complete. However, Legrand | AV makes
no claim that the information contained herein covers all details,
conditions or variations, nor does it provide for every possible
contingency in connection with the installation or use of this
product. The information contained in this document is subject
to change without notice or obligation of any kind. Legrand | AV
makes no representation of warranty, expressed or implied,
regarding the information contained herein. Legrand | AV
assumes no responsibility for accuracy, completeness or
sufficiency of the information contained in this document.
Chief® is a registered trademark of Legrand | AV Inc.
IMPORTANT SAFETY INSTRUCTIONS
WARNING:
A WARNING alerts you to the possibility of
serious injury or death if you do not follow the instructions.
CAUTION:
A CAUTION alerts you to the possibility of
damage or destruction of equipment if you do not follow the
corresponding instructions.
WARNING:
Failure to read, thoroughly understand, and
follow all instructions can result in serious personal injury,
damage to equipment, or voiding of factory warranty! It is the
installer’s responsibility to make sure all components are
properly assembled and installed using the instructions
provided.
WARNING:
Failure to provide adequate structural strength
for this accessory can result in serious personal injury or
damage to equipment! It is the installer’s responsibility to
make sure the structure to which this accessory is attached
can support five times the combined weight of all equipment.
Reinforce the structure as required before installing the
component.
WARNING:
Exceeding the weight capacity can result in
serious personal injury or damage to equipment! It is the
installer’s responsibility to make sure the combined weight of:
• all components located in the
complete accessory
does
not exceed 100 lbs (45 kg).
• all components attached to the CMS491/CMS492
Series component shelf may not exceed 25 lbs (22 kg)
per shelf
;
• all components attached to the
extension column
,
(CMS491C/CMS492C models only) does not exceed
50 lbs (22 kg).
WARNING:
Never operate this mounting system if it is
damaged. Return the mounting system to a service center
for examination and repair.
IMPORTANT ! :
The CMS491/492 has been designed to be
mounted recessed into a suspended ceiling secured by a
WireVice system.
IMPORTANT ! :
The CMS491/492 has been designed to
support a single electrical receptacle or a double receptacle.
NOTE:
Spacings - To ensure safe operation of the equipment
installed in the enclosure, per National Electric Code,
ANSI/NFPA 70, a minimum separation between power cords
and signal or communication cables may be required.
NOTE:
It is the installer’s responsibility to ensure that the
enclosure is bonded to the ground in the switch box, in accord-
ance with the National Electric Code, ANSI/NFPA 70 or
Canadian Electrical Code, CSA C22.1. A green grounding
screw is provided in the enclosure for the purpose, if required.
NOTE:
This Cabinet System is for use with Listed ITE or
Audio/Video equipment only.
NOTE:
When selecting a Listed 120 Vac Receptacle for use as
the main power source for the CMS Series boxes (to power the
A/V equipment), make sure that AC Receptacle is rated at least
15A and it is used in the building's AC branch circuit that is
connected to a circuit breaker rated at least 15A.
Do not
connect more than 12A from the 15A Receptacle, or 16A from the
20A Receptacle.
In the U.S., the equipment shall be installed per the applicable
requirements of the National Electrical Code, ANSI/NFPA 70.
In Canada, the equipment shall be installed per the applicable
requirements of the Canadian Electrical Code, CSA C22.1.
NOTE:
The CMS491/492 Series consists of:
• CMS491 1x2 Standard Ceiling Box
• CMS491C 1x2 Ceiling Box with Column Drop
• CMS492 2x2 Standard Ceiling Box
• CMS492C 2x2 Ceiling Box with Column Drop
NOTE:
The CMS491C and CMS492C each accommodate a
Listed Chief CMS Series extension column (not included).
--SAVE THESE INSTRUCTIONS--
WARNING:
Use this mounting system only for its intended
use as described in these instructions. Do not use
attachments not recommended by the manufacturer.
WARNING:
For indoor use only.
