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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
16.77 ft (5.11 m) MAXIMUM
Y
X
A single JSH-180 sidewall 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 16.77 ft (5.11 m) from the farthest point it is intended to protect.
Table 3.2.3.1a - Alternate Nozzle Spacing for JSH-180 Sidewall Nozzles - Selected Values
X distance (width) Y distance (throw)* Area of Coverage
ft m ft m ft² m²
15 4.57 15 4.57 225.0 20.90
14 4.27 15.2 4.63 212.8 19.77
13 3.96 15.5 4.72 201.5 18.72
12 3.66 15.7 4.79 188.4 17.50
11 3.35
15.8 4.82 173.8 16.15
10 3.05 16 4.88 160.0 14.86
9 2.74 16.2 4.94 145.8 13.55
8 2.44 16.3 4.97 130.4 12.11
* Y distance rounded where applicable
Appendix D
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