Installation Requirements for Use of Reliable Attic Sprinklers with Listed CPVC Pipe
Figure 31
Maintain at least 18” (450 mm) between CPVC pipe and heat producing or releasing devices.
Install sprinklers on CPVC pipe only in the following configurations:
(1) directly mounted to a fitting on the branch line pipe, (2) on an
angled sprig where the horizontal distance between the sprinkler
and the branch line does not exceed 6” (150 mm), (3) on an
armover sprig where the horizontal distance between the sprinkler
and the branch line does not exceed 6” (150 mm), or (4) on a
vertical sprig.
Locate a sprinkler within 1’-0” (300 mm) horizontally of CPVC
risers
Branch lines over joists must be protected with a minimum 6” (150
mm) thickness of noncombustible insulation (e.g., fiberglass). A
maximum of 3’-0” (900 mm) of an angled sprig may extend above
the insulation to supply Model GP56 and AH Series sprinklers.
Branch lines over joists must be protected with a minimum 6” (150
mm) thickness of noncombustible insulation (e.g., fiberglass). A
maximum of 10’-0” (3 m) of a vertical sprig may extend above the
insulation to supply Model GP56 sprinklers.
Note:
Where Reliable Attic Sprinklers are installed on wet-pipe sprinkler systems with CPVC pipe, the CPVC pipe must be protected
in accordance with the pipe manufacturer’s installation instruction as well as the requirements in Figure 30.
Branch lines between joists must be protected with a
minimum 6” (150 mm) thickness of noncombustible
insulation (e.g., fiberglass) either within the joist bay or on
top of the joists. A maximum of 3’-0” (900 mm) of an angled
sprig may extend above the insulation to supply Model
GP56 and AH Series sprinklers.
Branch lines between joists must be protected with a
minimum 6” (150 mm) thickness of noncombustible
insulation (e.g., fiberglass) either within the joist bay or on
top of the joists. A maximum of 3’-0” (900 mm) of an angled
sprig may extend above the insulation to supply Model
GP56 and AH Series sprinklers.
Bulletin 056
February 2020
Page 25 of 27
www.reliablesprinkler.com
