Janus FM-200 Sv Series - 3.5 Nozzle Determination

Page: 42
FM-200® OPERATION, DESIGN, & SERVICE MANUAL
Revision F
Document # DOC102
Issued: February 1, 2009
Revised: 11-Nov-2011
40YE
Section 3 System Design
3.5 Nozzle Determination
e placement, arrangement, and selection of discharge nozzles should be considered according to the
hazard conguration and the coverage of each nozzle. Nozzles are designed for 90° (corner), 180° (sidewall),
and 360° (radial) orientation.
e 90° corner nozzle can cover a maximum area of 32 ft x
32 ft (9.75 m x 9.75 m) for a total of 1024 ft
2
(95.1 m
2
). e
centerline of a 90° corner nozzle must be located within 12
in (305 mm) of each adjacent wall (see gure 3.5a). A single
corner nozzle may be used to protect a room of less total
area than 1024 ft
2
(95.1 m
2
) provided the nozzle is not more
than 45.25 ft (13.79 m) from the farthest point of the hazard
it is intended to protect. Refer to Table 3.5a in Appendix
E for alternate spacing options. e nozzle should typically
be oriented so that the orice is aimed at the diagonally
opposing corner (farthest point).
e 180° sidewall nozzle can cover a maximum area of 64
ft x 32 ft (19.5 m x 9.75 m) for a total of 2048 ft
2
(190.2
m
2
). e centerline of a 180° nozzle must be located within
12 in (305 mm) o the back wall. A single sidewall nozzle
may be used to protect a room of less total area than 2048 ft
2
(190.3 m
2
) provided the nozzle is not more than 45.25 ft
(13.79 m) from the farthest point it is intended to protect.
Refer to Table 3.5b in Appendix E for alternate spacing
options. e nozzle should typically be oriented so that the
point on the nozzle face that is halfway between its orices
is perpendicular to the adjacent wall.
e 360° radial nozzle can cover an area that is up to 64
ft x 64 ft (19.5 m x 19.5 m) for a total of 4096 ft
2
(380.5
m
2
). e centerline of a 360° nozzle cannot be more than
45.25 ft (13.79 m) from the farthest point it is intended to
protect. e nozzle must be oriented so that each orice is
at an angle of 45° from an imaginary line drawn through
its center and running perpendicular to each wall as shown
in Figure 3.5c.
Figure 3.5a 90° Corner Nozzle
Maximum Coverage Area
Figure 3.5b 180° Sidewall Nozzle
Maximum Coverage Area
Figure 3.5c 360° Radial Nozzle
Maximum Coverage Area