MODEL V-SD
SPECIFIC APPLICATION
ATTIC SPRINKLER
TECHNICAL DATA
Page 5 of 12
Form No. F_043015 20.07.28 Rev 20.2
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: [email protected]
Visit the Viking website for the latest edition of this technical data page www.vikinggroupinc.com.
ADDITIONAL DESIGN CRITERIA - UL Chart 2
(Also refer to DESIGN CRITERA Chart 1)
Allowable roof span, flow, pressure and slope for attic protection using Viking V-SD Sprinklers
Design Criteria: Flow and Pressures refer to Design Chart 1.
System Type:
Wet systems and dry systems.
Antifreeze Systems:
Use only listed antifreeze in accordance with the applicable NFPA standard as follows:
Option 1:
Use any listed antifreeze in accordance with the manfacturer’s installation instructions.
Option 2:
For a Light Hazard Unoccupied attic
1.
System Volume ≤200 gal (764 L)
2.
Use freezemaster™ antifreeze (refer to Manufacturer’s documentation)
3.
Viking Attic Sprinklers (V-BB, V-HIP, V-SD, VK696, VK697)
4.
Calculate the number of sprinklers in the hydraulically remote area in accordance with wet system criteria.*
* NOTE:
For systems greater than 40 Gal (151 L), pipe sizing shall be determined using both the Darcy-Weisbach and Hazen-
Williams approved hydraulic calculations. Because of the density of freezemaster™ antifreeze, the K-factor must be adjusted,
and the friction loss must be considered in the system design.
Piping Types:
Steel (wet and dry) CPVC (wet systems only).
Occupancy Classification
: Light hazard only.
Viking V-SD Sprinkler Spacing
Maximum Coverage Area:
339 ft
2
(31.5 m
2
) as measured along the slope.
Coverage area is determined by the maximum distance thrown measured along the slope, multiplied by the distance along the branch
line.
Along the Branch Line:
Minimum Spacing: 4’-0” (1,22 m) between V-SD’s and from V-BB’s. 7’-0” (2,13 m) from Viking Attic Uprights. 6’-0” (1,83 m) from
Standard Spray Sprinklers.
Maximum Spacing: 6’-0” (1,83 m) between V-SD’s and from V-BB’s.
Measured Down the Slope:
Minimum Spacing: 26’-0” (7,92 m) from Viking Attic Uprights and Standard Spray Sprinklers.
Deflector Position below Peak, Ridge, or Deck:
For all roof pitches as per the listing from 4:12 – 12:12 the maximum deflector distance down is 22” (559 mm), and the minimum
deflector distance down is 16” (406 mm).
Deflector Position above Scissor Truss:
For all roof pitches as per the listing from 4:12 – 12:12 the minimum distance above a Scissor Truss is 18” (457 mm).
Maximum distance from center line of the ridge:
6” (152 mm) on either side of the center line.
Minimum distance from Truss:
6” (152 mm) from nearest edge of the truss.
Distance from Shear Wall:
4” – 6” (102 - 152 mm) from face of wall.
Distance from Draft Curtain:
4” – 6” (102 - 152 mm) from face of draft curtain and a minimum of 8” above the bottom.
Continues on next page.
