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3 of 6
Document No.U029323
Date
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Jun/17/2014
NOTES
Fire Sprinkler Systems should only be designed and installed by individuals who are completely familiar with automatic
sprinkler system design, installation procedures, and techniques.
Several criteria may apply to the installation and usage of each sprinkler. Consequently, it is recommended that the
sprinkler system designer review and develop a working understanding of the complete list of criteria prior to initiating
the design of the sprinkler system.
Questions concerning sprinkler installation and usage criteria, which are not coverage by the following instructions,
should be submitted to Contact Company. Include sketches and technical details as appropriate.
In some instances, the requirements of this document may concern specifications which are more stringent and which
take precedence over those specified in NFPA 13 or by the authority having jurisdiction.
The Model CN-QR must not be used in applications where the air pressure above the ceiling is greater than that below.
The spray from the sprinkler is distributed radically outward and downward from the sprinkler deflector. Consequently,
the sprinklers must be located such that there will be no blind spaces shielded from spray by partitions, room dividers,
overhangs or other parts of the dwelling structure.
The number of sprinklers within each compartment (as defined by NFPA 13) must be kept as small as possible. Do NOT
use more sprinklers than necessary to cover a particular space.
Use only the Cover Plate provided with the Model CN-QR. The sprinkler must be secured in place by firmly fastening the
sprinkler system piping to the structure. If the sprinkler is not properly secured in position, reaction forces resulting
from sprinkler operation could alter its orientation and its water distribution pattern.
Obstruction to Water Distribution
Locations of sprinklers must follow the obstruction rules of NFPA 13.
General Service Conditions
The Model CN-QR must only be utilized in WET PIPE sprinkler systems per NFPA 13.
Operational Sensitivity Criteria
For proper operational sensitivity, the Model CN-QR must be installed beneath a solid ceiling having a smooth or textured
surface.
Heat Source Criteria
Refer to NFPA 13 for the requirements relating to the prevention of possible activation of the Heat Responsive Element of
Model CN-QR, due to exposure to a heat sources other than an actual fire.
Precautionary Warnings for Corrosive Environments
The Model CN-QR should not be installed where they may be subjected to a corrosive environment including the following:
(1) Chlorine ion and Chloride environment.
Stress corrosion cracking may be caused by exposure to environments with Chlorine ion and Chloride. Exposure to this
environment may result in sprinklers operating under Non-Fire conditions or Not Operating when exposed to an actual fire.
(2) Sprinkler system piping with Copper.
Sprinkler systems should be constructed in compliance with the applicable standards and the requirements for the copper
piping when copper piping is used in the sprinkler system. (Reference standards NFPA 13, ASTM B813, B828, and CDA
(Copper Development Association) – Solder Joint)
All residual flux must be removed from the interior and exterior of copper piping by thoroughly flushing before installation of
the Sprinkler Heads. Otherwise, residues of flux may cause corrosion and leakage in the sprinkler system.
INSTALLATION
The Model CN-QR must be installed in accordance with the following instructions.
NOTES
Do not use any sprinklers which have been subjected to potential mechanical damage. Do not use any sprinklers which
show deformation or cracking in either the Sprinkler or the Protective Cap.