Model AH56 Specific Application Sprinkler
SIN RA5626
Technical Specifications
Style:
Upright
Orientation:
Top of deflector parallel to roof deck
Threads:
1/2” NPT or ISO 7-1R1/2
Nominal K-Factor:
5.6 (80 metric)
Max. Working Pressure:
175 psi (12 bar)
Sprinkler Temperature Rating:
212°F (100°C)
Sensitivity:
Quick-response
Hydraulic Design Criteria
(See Table I)
Finish
Brass
Sprinkler Wrench
Model W2
Listings and Approvals
cULus Listed*
Hazard Classification
Light Hazard
System Types
Wet-pipe with steel or Listed CPVC pipe
Dry-pipe with steel pipe
Installation Criteria
Sprinkler Spacing
Minimum 6 ft (1.8 m), maximum 10 ft (3.0 m)
between sprinklers across roof slope.
Minimum 12 ft (3.7 m) down slope to nearest
sprinkler, measured parallel to roof deck.
Note:
A minimum 2 ft (0.61 m) lateral offset
is required between AH sprinklers when
viewed looking up the roof slope.
Distance from Top of Deflector to
Bottom of Truss Top Chord (measured
perpendicular to roof deck)
Min: 1 inches (25 mm)
Max: 3 inches (76 mm)
Frame Arm Orientation
Frame arms are to be oriented
parallel to the eave at the bottom
of the protected space.
Material Specifications
Thermal Sensor:
Nickel Alloy Solder Link
Levers:
Stainless Steel
Sprinkler Frame:
Brass Alloy
Button:
Copper Alloy
Button Clip:
Stainless Steel
Sealing Assembly:
Nickel Alloy with PTFE
Load Screw:
Bronze Alloy
Deflector:
Bronze Alloy
Model AH56 Minimum Required Flow and Residual Pressure
Table I
Ceiling Slope
Max. Coverage Area
ft x ft (m x m)
Flow
gpm (l/min)
Pressure
psi (bar)
4:12 to 8:12
10 x 15* (3.0 x 4.6)
15 (57)
7.2 (0.50)
Model AH56 Sprinkler Components and Dimensions
Figure 8
*Long dimension of coverage area to be along the roof slope. Coverage is 6’-0” (1.8m) toward the peak and 9’-0” (2.7m) toward the
eave from the sprinkler. Coverage area to be measured parallel to the floor.
Note:
The first row of AH sprinklers may be a maximum of 9’-0” from the eave; however, the first row must always be on the eave side
of the girder truss (see Figures 24 and 25).
*Note:
Listed for the protection of sloped combustible and noncombustible concealed spaces, including hip roofs with traditionally framed
or step down truss construction.
Bulletin 056
February 2020
Page 9 of 27
www.reliablesprinkler.com
