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MV & LV SERIES ENGINEERED DRY CHEMICAL FIRE EXTINGUISHING SYSTEM
OPERATION, DESIGN, & SERVICE MANUAL
REV C
Document # DOC324
Issued: April 26, 2018
Revised: March 22, 2022
UL FILE # EX27541
10.6 ft (3.23 m) MAXIMUM
Y
X
A single JSH-360 radial nozzle may be used to protect a room with an area of 225 ft
2
(20.9 m
2
) or less provided the
nozzle is not more than 10.605 ft (3.23 m) from the farthest point it is intended to protect.
Table 3.2.3.1b - Alternate Nozzle Spacing for JSH-360 Radial Nozzles - Selected Values
X distance (width)* Y distance (length) Area of Coverage
ft m ft m ft² m²
20 6.10 7.1 2.16 142.0 13.19
19.6 5.97 8 2.44 156.8 14.57
19.2 5.85 9 2.74 172.8 16.05
18.7 5.70 10 3.05 187.0 17.37
18.1 5.52
11 3.35 199.1 18.50
17.5 5.33 12 3.66 210 19.51
16.8 5.12 13 3.96 218.4 20.29
15.9 4.85 14 4.27 222.6 20.68
15 4.57 15 4.57 225.0 20.90
13.9 4.24 16 4.88 222.4 20.66
12.7 3.87 17 5.18 215.9 20.06
11.2 3.41 18 5.49 201.6 18.73
9.4 2.87 19 5.79 178.6 16.59
7.1 2.16 20 6.10 142.0 13.19
* X distance rounded where applicable
Appendix D
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