www.senjusprinkler.com
Document No. U03688A • 01-06-2022
Page 4 of 8
Obstruction to Water Distribution
Locations of sprinklers must follow the obstruction rules of NFPA 13.
General Service Conditions
The Model RC-QR must only be utilized in sprinkler systems per NFPA 13 guidelines.
Operational Sensitivity Criteria
For proper operational sensitivity, the Model RC-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 RC-QR, due to the exposure of a heat source other than an actual fire.
Available Sprinkler Temperature Ratings
Sprinkler Temperature
Classification
Sprinkler Nominal
Temperature Rating
Maximum Ambient Ceiling
Temperature
Temperature Rating of the
Cover Plate Assembly
Ordinary
162°F (72°C)
100°F (38°C)
140°F (60°C)
Intermediate
205°F (96°C)
150°F (66°C)
140°F (60°C)
1)
Intermediate
205°F (96°C)
150°F (66°C)
162°F (72°C)
1) Maximum ambient temperature for the Cover Plate Assembly is 100°F (38°C).
Precautionary Warnings for Corrosive Environments
Model RC-QR sprinklers 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
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 the copper piping by thoroughly flushing before
installation of the Sprinkler Heads. Otherwise, residues of flux may cause corrosion and/or leakage in the sprinkler
system.
I N S TA L L AT I O N
The Model RC-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.
Prior to installation, sprinklers should be maintained in the original cartons and packaging until used to minimize the potential for
damage to the sprinklers that could cause improper operation or non-operation.
