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