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Reliable AH42, Bulletin

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Reliable AH42 Bulletin Download Page 23

Obstruction Criteria (cont.)

Figure 28

Note:

 Reliable Attic sprinklers may be installed directly 

on pipe up to 2-1/2” NPS.  For 3” NPS and larger pipe, 
the obstruction rules for Extended Coverage Upright 
Spray Sprinklers shall be followed.

Bulletin 056 
February 2020

Page 23 of 27

www.reliablesprinkler.com

Summary of Contents for AH42

Page 1: ...ovided in Figures 9 through 25 Please note that the example sprinkler layouts are intended as design aids only and do not necessarily Model DS56 Model GP56 Model AH56 Model AH42 similar Model DD56 Model DD80 similar Attic Sprinkler Summary Table A Sprinkler Model K Factor gpm psi1 2 L min bar1 2 Thread Size NPT or ISO7 1 Max Coverage Area Measured on Floor ft x ft m x m Roof Slope Design Criteria ...

Page 2: ...s 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 4 ft 1 2 m maximum 6 ft 1 8m between sprinklers along ridge Minimum 26 ft 7 9 m down the roof slope toward eave to nearest sprinkler measured parallel to the roof deck Horizontal Distance from Face of Truss Min 6 inches 150 ...

Page 3: ...rtical Distance of Deflector Above Scissor Truss Min 18 inches 450 mm Horizontal Distance from Center line of Ridge Max 6 inches 150 mm Vertical Distance of Top of Deflector Below Peak Ridge or Deck Min 17 inches 430 mm Max 21 inches 530 mm Material Specifications Thermal Sensor Nickel Alloy Solder Link Levers Stainless Steel Sprinkler Frame Brass Alloy Button Copper Alloy Button Clip Stainless St...

Page 4: ... 18 inches 450 mm Horizontal Distance from Center line of Ridge Max 6 inches 150 mm Vertical Distance of Top of Deflector Below Peak Ridge or Deck Min 17 inches 430 mm Max 21 inches 530 mm 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 Scr...

Page 5: ... Min 18 inches 450 mm Horizontal Distance from Center line of Ridge Max 6 inches 150 mm Vertical Distance of Top of Deflector Below Peak Ridge or Deck Min 17 inches 430 mm Max 21 inches 530 mm 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...

Page 6: ...of Draft Curtain Min 8 inches 200 mm Vertical Distance of Deflector Above Scissor Truss Min 18 inches 450 mm Distance from Top of Deflector to Roof Deck measured perpendicular to roof deck Min 9 inches 230 mm Max 13 inches 330 mm Material Specifications Thermal Sensor Nickel Alloy Solder Link Levers Brass Alloy Frame Body Brass Alloy Frame Arms Brass Alloy Yoke Copper Alloy Sealing Assembly Nickel...

Page 7: ...e to nearest sprinkler measured parallel to roof deck Distance from Top of Deflector to Roof Deck measured perpendicular to roof deck Min 9 inches 230 mm Max 13 inches 330 mm 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 Allo...

Page 8: ...ottom 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 CHROME PLATED Bronze Alloy Model AH42 Sprinkler Components and Dimensions Figure 7 Model AH42 Minimum Required Flow and Residual Press...

Page 9: ...m 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 Pr...

Page 10: ...Model DD Series Sprinkler Example Layout Not to Scale Figure 9 Model DS56 Sprinkler Example Layout Not to Scale Figure 10 Bulletin 056 February 2020 Page 10 of 27 www reliablesprinkler com ...

Page 11: ...6 Sprinklers Beyond Obstruction Example Layout Not to Scale Figure 11 Model DS56 Sprinklers at Ridge with Model DS56 Sprinklers Beyond Obstruction Example Layout Not to Scale Figure 12 Bulletin 056 February 2020 Page 11 of 27 www reliablesprinkler com ...

Page 12: ...s Sprinklers Beyond Obstruction Example Layout Not to Scale Figure 13 Model DS56 Sprinklers at Ridge with Model GP56 or AH Series Sprinklers Beyond Obstruction Example Layout Not to Scale Figure 14 Bulletin 056 February 2020 Page 12 of 27 www reliablesprinkler com ...

Page 13: ...Model DD Series Sprinklers at Ridge with Model GP56 or AH Series Sprinklers in Dormers Example Layout Not to Scale Figure 15 Bulletin 056 February 2020 Page 13 of 27 www reliablesprinkler com ...

Page 14: ...Model DD Series Sprinklers at Ridge with Standard Spray Sprinklers at Dormer or Cross Example Layout Not to Scale Figure 16 Bulletin 056 February 2020 Page 14 of 27 www reliablesprinkler com ...

Page 15: ...17 Model DD Series Sprinklers at Ridge with Model GP56 or AH Series Sprinklers at Eave Example Layout Not to Scale Figure 18 Note if necessary a baffle may be added between the Model DD sprinklers and the Model GP56 sprinklers to prevent cold solder Bulletin 056 February 2020 Page 15 of 27 www reliablesprinkler com ...

Page 16: ...19 Model DD Series Sprinklers at Ridge with DS56 Sprinklers at Hip or Ell Example Layout Not to Scale Figure 20 Note if necessary a baffle may be added between the Model DS sprinklers and the Model GP56 or AH Series sprinklers to prevent cold solder Bulletin 056 February 2020 Page 16 of 27 www reliablesprinkler com ...

Page 17: ...inklers at Hip or Ell Example Layout Not to Scale Figure 21 Model DD Series Sprinklers at Ridge with Standard Spray Sprinklers at Hip or Ell Example Layout Not to Scale Figure 22 Bulletin 056 February 2020 Page 17 of 27 www reliablesprinkler com ...

Page 18: ...Model DS56 Sprinklers at Ridge with Standard Spray Sprinklers at Hip or Ell Example Layout Not to Scale Figure 23 Bulletin 056 February 2020 Page 18 of 27 www reliablesprinkler com ...

Page 19: ...Model DD Series Sprinklers at Ridge and Model AH Sprinklers at Hip and Ell Example Layout Not to Scale Figure 24 Bulletin 056 February 2020 Page 19 of 27 www reliablesprinkler com ...

Page 20: ...Model DS56 Sprinklers at Ridge and Model AH Sprinklers at Hip and Ell Example Layout Not to Scale Figure 25 Bulletin 056 February 2020 Page 20 of 27 www reliablesprinkler com ...

Page 21: ...nklers at Ridge and DS56 Sprinklers in Attic Plan View Figure 26 Model AH Series Sprinklers at Ridge and DS56 Sprinklers in Attic Cross Section Figure 26A Bulletin 056 February 2020 Page 21 of 27 www reliablesprinkler com ...

Page 22: ...dditional sprinklers not required below horizontal obstruction 4 0 1 2 m or less in width Additional sprinklers required below horizontal obstruction greater than 4 0 1 2 m in width Additional sprinklers not required beyond horizontal obstruction more than 6 from bottom of rafter Additional sprinkler required beyond horizontal obstruction less than 6 150 mm from bottom of rafter Additional sprinkl...

Page 23: ...le Attic sprinklers may be installed directly on pipe up to 2 1 2 NPS For 3 NPS and larger pipe the obstruction rules for Extended Coverage Upright Spray Sprinklers shall be followed Bulletin 056 February 2020 Page 23 of 27 www reliablesprinkler com ...

Page 24: ...s with the deflector parallel to the roof deck and the arrow on the deflector pointing down the roof slope Install Model AH Series sprinklers with the deflector parallel to the roof and frame arms parallel with the lower eave of the protected space Model GP56 and AH Series Installation Install Reliable Attic Sprinklers only in the orientation indicated in Figure 28 Figure 29 provides additional se...

Page 25: ... 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 a...

Page 26: ... Series sprinklers Branch lines over joists must be protected with a minimum 6 150mm thickness of noncombustible insulation e g fiberglass either within the joist bay or on top of the joists A vertical sprig of any length may extend above the insulation to supply Model AH Series sprinklers Caution 1 Insulation required by Figures 30 and 31 is for fire protection purposes and not for freeze protect...

Page 27: ...system maintained in accordance with NFPA 25 as well as the requirements of any Authorities Having Jurisdiction Prior to installation sprinklers should remain in the original cartons and packaging until used This will minimize the potential for damage to sprinklers that could cause improper operation or non operation Do not clean sprinklers with soap and water ammonia liquid or any other cleaning ...

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