Product Overview

ManualsBrandsSenju Sprinkler ManualsFire SprinklersRC-RES Flat Concealed Sprinkler (SS8561), Pendent, 5.8K, 205°F - Head Only

www.senjusprinkler.com Document No.U087474 • 01-29-2021 Page 1 of 8

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 Deector, Heat Responsive Element

etc., which is concealed above the ceiling. The cover plate has a at prole, 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 rst 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 5.8 (83.6 LPM/bar

1/2

) K-factor that meets the required residential ow rates with minimal residual

pressure, which allows for smaller pipe sizes and water supply requirements. For extended installation exibility, 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 t 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 re. However, residential re sprinkler systems are not a substitute for re safety awareness or re

safety construction required by building codes.

“Lead Free” is dened 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 ttings and xtures.

GENERAL DESCRIPTION

Residential Lead Free

Flat Concealed Sprinkler, Pendent

Model RC-RES

K-Factor: 5.8

•

SIN: SS8561

C US

NSF/ANSI/CAN 61 & 372

Summary of content (8 pages)

PAGE 1
Model RC-RES K-Factor: 5.8 • SIN: SS8561 Residential Lead Free Flat Concealed Sprinkler, Pendent NSF/ANSI/CAN 61 & 372 C US GENERAL DESCRIPTION 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).
PAGE 2
WA R N I N G S The Model RC-RES must be installed and maintained in accordance with the rules stated herein as well as in compliance with the applicable standards of the National Fire Protection Association regulations and the standards of any other authorities having jurisdiction. In the event of this condition, consult the authorities having jurisdiction for guidance and approval. Failure to do so may impair the integrity of these devices.
PAGE 3
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. This leads to the water flow to be distributed on the affected fire area. (Ref.
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
Table A. NFPA 13D & 13R Wet Pipe Hydraulic Design Criteria for Model SS8561 For systems with ceiling types smooth flat horizontal, or beamed, or sloped, in accordance with NFPA 13D, 13R or 13 as applicable. Maximum Coverage Area(a) Ft. x Ft. (m x m) Maximum Spacing Ft. (m) 12 x 12 (3.7 x 3.7) Ordinary Temperature Rating 162˚F (72˚C) Intermediate Temperature Rating 205˚F (96˚C) Flow (b) GPM (LPM) Pressure(b) PSI (bar) Flow (b) GPM (LPM) Pressure(b) PSI (bar) 12 (3.7) 16 (60.6) 7.6 (0.52) 16 (60.
PAGE 6
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. Step 2: With pipe thread sealant applied to the threads, hand tighten the sprinkler into the sprinkler fitting.
PAGE 7
Figure 6: Installation (Cover Plate Assembly) Figure 7: Installation (Correct and Incorrect) CARE & MAINTENANCE 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. Automatic sprinklers are not to be tested with a heat source. Operation of the heat responsive element can result.
PAGE 8
Leaking or corroded sprinklers must be replaced. Automatic Sprinklers must be kept in a cool and dry place. Automatic sprinklers must never be physically altered, such as painted, plated, or coated, once shipped from the factory. If the sprinklers have been in any way modified, they must be replaced. Great caution must be applied to prevent damage to the sprinklers at all stages - before, during, and after installation.