Page
：
2 of 6
Document No.U029323
Date
：
Jun/17/2014
TECHNICAL DATA
Approvals:
c
UL
us
Listed / as Quick Response
FM Approved / as Standard Response
Sprinkler Identification Number (SIN):
SS9521
Maximum Working Pressure:
175psi (12.1bar)
Discharge Coefficient (Nominal K-Factor):
K=5.6 GPM/psi
1/2
(80.6 LPM/bar
1/2
)
Temperature Rating:
162°F/72°C/Sprinkler with 140°F/60°C/Cover Plate
205°F/96°C/Sprinkler with 162°F/72°C/Cover Plate
(
c
UL
us
Listed only)
Vertical Adjustment:
3/8 inch (9.0 mm)
Cover Plate Finishes:
Standard Finishes-
White, Ivory, Beige, Brown, Black, Nickel,
Wood Grain
Custom Finishes-
Custom color and custom pattern cover plates
are available on special order. Contact a Senju
Sprinkler representative with any custom orders.
Please see chart on Page 6 for more detail.
Physical Characteristics:
Ref. Figure 1
OPERATION
In case of fire, the solder component that holds together the Cover Plate and the Retainer melts and as a result the Cover Plate is
released. The two Heat Collectors are exposed and when sufficient heat from the fire is recorded,
internal components of the
sprinkler to fall apart. This leads to the dropping of the Deflector into its operating position, allowing the water flow to be distributed
on the affected by fire area. (Ref. Figure 2)
FIGURE 2. OPERATION PROCESS
DESIGN CRITERIA
The Model CN-QR sprinklers are listed by UL and C-UL as quick response / standard coverage for use in accordance with NFPA
standard, also the model is FM Approved as a Standard Response, No-Corrosive Atmospheres. The herein stated rules for use
and installation of the Model CN-QR are provided by the manufacturer and must be strictly implemented for safe and full results.
FIGURE 1. Model CN-QR K=5.6
Water Discharge
Cover Plate Operation
Normal Condition
Sprinkler Operation
4- Gasket (PTFE)
7- Cover Plate Assembly
6- Heat Collector (Copper)
5- Fusible Metal (Solder)
1- Body (Copper Alloy)
2- Frame (Bronze)
3- Deflector (Phosphorus Bronze)
COMPONENTS (MATERIALS) :
1-
3
8
" (35mm)
4
1
3
2
5
6
7
2-
3
8
" (60mm)
6 Wrench Slots
ID Number (SIN)
Marking
Listing Mark
Temperature Rating
Country Origin
NPT
1
2
