Table of Contents
Advertisement
Quick Links
G E N E R A L D E S C R I P T I O N
The Model RC-RES Residential Flat Concealed Sprinklers are automatic sprinklers of the compressed fusible solder
type. They are decorative and fast responding. The Cover Plate Assembly hides the Deflector, Heat Responsive Element
etc., which is concealed above the ceiling. The cover plate has a flat profile, and its diameter is extremely small (2-5/8
inch, 68mm). The push-on and/or thread-on, thread-off design of the concealed cover plate assembly allows for easy
installation of the cover plate. Therefore, the Model RC-RES should be your first choice when aesthetics is the major
consideration for ultimate appeal and unbeatable performance is desired. The Model RC-RES is designed for residential
occupancies and is perfect for use in homes, hotels and other living quarters.
The Model RC-RES is to be used in wet pipe residential sprinkler systems for One- and Two- Family Dwellings and
Manufactured Homes per NFPA 13D; wet pipe residential sprinkler systems for Residential Occupancies up to and Including
Four Stories in Height per NFPA 13R; or, wet pipe sprinkler systems for the residential portions of any occupancies per
NFPA 13.
The Model RC-RES has a 3.7 (53.3 LPM/bar
pressure, which allows for smaller pipe sizes and water supply requirements. For extended installation flexibility, the
Model RC-RES provides 1/2 inch (12.8mm) vertical adjustment. This adjustment in installation decreases the need for
precise cutting of the pipe that drops to the sprinkler and allows for a perfect fit with a range of pipe lengths.
The heat sensitivity and water distribution design of Model RC-RES allows for an increased chance of residents to escape
or evacuate in case of a fire. However, residential fire sprinkler systems are not a substitute for fire safety awareness or fire
safety construction required by building codes.
"Lead Free" is defined in the Reduction of Lead in Drinking Water Act (S.3874) endorsed by AWWA's Water Utility Council,
and California Assembly Bill #1953 as having less than or equal to a weighted average of 0.25% lead in wetted surface of
pipes, plumbing fittings and fixtures.
www.senjusprinkler.com
Model RC-RES
K-Factor: 3.7
Residential Lead Free
Flat Concealed Sprinkler, Pendent
) K-factor that meets the required residential flow rates with minimal residual
1/2
Page 1 of 8
SIN: SS8261
•
NSF/ANSI/CAN 61 & 372
C
US
Document No.U086209 • 01-29-2021
Advertisement
Table of Contents
Related Manuals for Senju Sprinkler SS8261
Summary of Contents for Senju Sprinkler SS8261
- Page 1 Model RC-RES K-Factor: 3.7 SIN: SS8261 • Residential Lead Free Flat Concealed Sprinkler, Pendent NSF/ANSI/CAN 61 & 372 G E N E R A L D E S C R I P T I O N The Model RC-RES Residential Flat Concealed Sprinklers are automatic sprinklers of the compressed fusible solder type.
-
Page 2: Technical Data
T E C H N I C A L D ATA • Approvals: cULus Listed NSF/ANSI/CAN 61, NSF/ANSI 372 • Sprinkler Identification Number (SIN): SS8261 • Maximum Working Pressure: 175psi (12.1bar) • Discharge Coefficient (Nominal K-Factor): K = 3.7 GPM/psi (53.3 LPM/bar... -
Page 3: Operation
O P E R AT I O N In case of fire, the solder component that holds together the Cover Plate and the Retainer melts. Then the Cover Plate is released at once. As a result, the Deflector drops down to the intended position. Two Heat Collectors are exposed to fire, and when sufficient heat from the fire is reached, internal components of the sprinkler fall apart. - Page 4 Obstruction to Water Distribution Locations of sprinklers must follow the obstruction rules of NFPA 13, 13D and 13R for Residential Sprinklers. General Service Conditions The Model RC-RES must only be utilized in WET PIPE sprinkler systems. Heat Source Criteria Refer to NFPA 13D, 13R or 13 for the requirements relating to the prevention of possible activation of the Heat Responsive Element of Model RC-RES, due to the exposure of a heat source other than an actual fire.
-
Page 5: Installation
Table A. NFPA 13D & 13R Wet Pipe Hydraulic Design Criteria for Model SS8261 For systems with ceiling types smooth flat horizontal, or beamed, or sloped, in accordance with NFPA 13D, 13R or 13 as applicable. Maximum Ordinary Temperature Intermediate Temperature... -
Page 6: Installation Steps
Installation Steps Step 1: The installation requirements for the sprinkler are as follows: to be installed only in the pendent position with the waterway perpendicular to the ceiling. Install the sprinkler fitting so that the distance from the face of the fitting to the mounting surface will be nominally 2 inches (50.8mm) as shown in Figure 3. -
Page 7: Care And Maintenance
Figure 6: Installation (Cover Plate Assembly) Figure 7: Installation (Correct and Incorrect) C A R E & M A I N T E N A N C E The following instructions must be implemented for the maintenance and service of the Model RC-RES. Notes Wet pipe sprinkler systems must be maintained at a minimum temperature of 40°F / 4°C to prevent freezing and bursting of the pipe and/or sprinklers. -
Page 8: Limited Warranty
When placing an order, please contact a local distributor with the following information (Model Name, Temperature Rating and Finish). Sprinkler • Model: RC-RES SIN: SS8261, Residential Flat Concealed Sprinkler, Pendent, K3.7, Temperature: 162°F (72°C) or 205°F (96°C) Cover Plate Assembly □ • 2-5/8 inch (φ68mm) or 3-1/4 inch (φ83mm) or 2-5/8 inch square ( 68mm), Order separately from Sprinkler Please refer to the chart below for available sizes, temperature, and finishes.
Need help?
Do you have a question about the SS8261 and is the answer not in the manual?
Questions and answers
For one SS8261/SS8464 sprinkler, the cover plate has dropped between 1/8 and 1/4 inches from the ceiling drywall. This sprinkler is next to our shower. Can I just screw the cover plate up or should I call a fire system specialist to inspect it?