Submittal Sheet

Page ： 3 of 8
Document No.U087670
Date ： Jan/11/2019
OPERATION
The sprinkler assemblies fusible link is comprised of two link halves that are joined together with a thin layer of solder. When
the rated temperature is reached, the solder melts and the two link halves separate. This leads to the water flow to be
distributed on the affected fire area.
FIGURE 2. OPERATION PROCESS (The figure is for illustrative purposes only)
DESIGN CRITERIA
The Model FR-QR, Horizontal Sidewall and Recessed Horizontal Sidewall Sprinklers are listed by UL and FM as quick
response / standard coverage for use in accordance with NFPA. The herein stated rules for use and installation of Model
FR-QR are provided by the manufacturer and must be strictly implemented for safe and full results. Only the D1 or D2
Recessed Escutcheon, as applicable, is to be used for recessed horizontal sidewall installations.
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 covered by the following instructions,
should be submitted to your contracted 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 spray from the sprinkler is distributed 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 few as possible. Do NOT
use more sprinklers than necessary to cover a particular space.
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 FR-QR must only be utilized in sprinkler systems per NFPA 13 guidelines.
Operational Sensitivity Criteria
For proper operational sensitivity, the Model FR-QR Recessed Horizontal Sidewall Sprinkler must be installed with a distance
between 4-12 inches from the top of the deflector to the ceiling.
Heat Source Criteria
Refer to NFPA 13 for the requirements relating to the prevention of possible activation of the Heat Responsive Element of
Model FR-QR, due to the exposure of a heat source other than an actual fire.