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Sprinkler RES13
The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058
Telephone: 269-945-9501 Technical Services: 877-384-5464 Fax: 269-818-1680 Email: techsvcs@vikingcorp.com
AVOIDING OBSTRUCTIONS TO SPRINKLER DISCHARGE
(Obstruction rules for residential sprinklers are found in section 8.10 of the 2010 edition of NFPA 13.)
Positioning Residential Horizontal
Sidewall Sprinklers - Obstructions
at the Ceiling
Ceiling or Roof.
A
Wall
(A) Distance from sprinkler to side of obstruction.
(B) Distance from deflector to bottom of obstruction.
Positioning Residential Horizontal Sidewall
Sprinklers - Obstructions Along Walls
A
Form No. F_080190
18.10.25
B
Obstruction
B
A
Rev 16.1.P65
TECHNICAL DATA
Distance from Sprinkler to
Side of Ceiling Obstruction
(Dimension A)
Less than 8 ft.
(Less than 2.4 m)
8 ft. to less than 10 ft.
(2.4 m to less than 3.05 m)
10 ft. to less than 11 ft.
(3.05 m to less than 3.35 m)
11 ft. to less than 12 ft.
(3.35 m to less than 3.7 m)
12 ft. to less than 13 ft.
(3.7 m to less than 4 m)
13 ft. to less than 14 ft.
(4 m to less than 4.3 m)
14 ft. to less than 15 ft.
(4.3 m to less than 4.6 m)
15 ft. to less than 16 ft.
(4.6 m to less than 4.9 m)
16 ft. to less than 17 ft.
(4.9 m to less than 5.2 m)
17 ft. or greater
(5.2 m or greater)
Distance from Sprinkler to
Side of Obstruction Along
Wall (Dimension A)
Less than 1 ft. 6 in.
(Less than 457 mm)
1 ft. 6 in. to less than 3 ft.
(457 mm to less than .94 m)
3 ft. to less than 4 ft.
(.91 m to less than 1.2 m)
4 ft. to less than 4 ft. 6 in.
(1.2 m to less than 1.37 m)
4 ft. 6 in. to less than 6 ft.
(1.37 m to less than 1.8 m)
6 ft. to less than 6 ft. 6 in.
(1.8 m to less than 2 m)
6 ft. 6 in. to less than 7 ft.
(2 m to less than 2.1 m)
7 ft. or greater
(2.1 m or greater)
(A) Distance from sprinkler to side of obstruction.
(B) Distance from deflector to bottom of obstruction.
FREEDOM
RESIDENTIAL
®
SPRINKLER
INSTALLATION GUIDE
Maximum Distance from Deflector
to Bottom of Ceiling Obstruction
(Dimension B)
Inches
mm
No Obstructions Allowed
1
25.4
2
50.8
3
4
102
6
152
7
178
9
229
11
279
14
356
Maximum Distance from
Deflector to Bottom of
Obstruction (Dimension B)
Inches
mm
0
1
25.4
3
76
5
127
7
178
9
229
11
279
14
356
76
0
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