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RECOMMENDED EXPOSED MINIMUM BARREL LENGTH BASED ON AMBIENT TEMPERATURE IN THE PROTECTED AREA (STANDARD DRY PENDENT SPRINKLER SHOWN) INSTALL 1 INCH NPT THREADED END OF DRY PENDENT SPRINKLER WET PIPE INTO 7HE 1 INCH NPT SIDE OUTLET OF A MALLEABLE IRON TEE FRRNG AMBIENT AMBIENTEXPOSED �p�N� PER ANSI B 16.3(CLASS 150) TEMPERATURE OR CAST RON THREADED TEE FRTING OF PROTECTED 40'F 4C I 50'F 10'C I WF 16'C - III' PER ANSI 16.4(CLASS 125)ONLY. AREA•DISCHARGE THE EXPOSED MINIMUM BARREL LENGTH- OF OF PRINNKLER (FACE OF TEE TO TOP OF CEILING) IN. IN. YY IN. MY IF HUMIDITY AND TE PEIUTURE DIFFERENTIAL ,WF(4C) 0 0 D CAUSES CONDENSATION ON THE EXPOSED DRY WF(-1'C) 0 0 0 'f BABARid�IH KWuT WRAPPING INSULATINN EXPOSED 20'17(-TC) 4(101) 0 0 TAPE OR EQUIVALENT. i 10•F(-120) 6(203) 1 (25.1) D 0'F(-I&C) 12(305) 3(75) 0 MIDO6NEXPOSED (FITTED AREA) I SEAL THE CLEARANCE SPACE -I OF(-2SC) 14(356) 4(101) 1 (25.1) e I AROUND G THE SPRINKLER TO AVEIM LEAKAGE OF AIR INTO THE PROTECTED -2CrF(-2PC) 14(356) 6(152) 3(75) LENGTH i AREA AND CONSEQUENT FORMATION[IFC13MO SATE AROUND THE FRAME,WHICH -wF(-3cc) 16(406) 8(203) 4(101) I COULD Bi USE flBIT OPERATION OR CA -4QF(-40'C) 16(4'S7.) B (203) 4(101) , PREMATURE OPERATIOX SEE BELOW FQ2 RECOMMENDED METH OM CLEARANCE -50-F(-49C) 20(508) 10(254) 6(152) BL}ENS1Oi HOLE -WF(-51-C) 20(508) 10(2 44) 6(152) •THE PROTECTED AREA REFERS TO THE AREA BELOW THE CEILING. THE AMBIENT 7EMPERATLRtE IS THE TEMPERATURE AT THE DISCHARGE END OF THE SPRINKLER. FOR PROTECTED AREA TEMPERATURES THAT OCCUR BETWEEN THE VALUES R LISTED.USE THE NEXT COOLER TEMPERATURE J"THE MIN. REQUIRED BARREL LENGTH IS NOT THE SAME AS THE*9 DIMENSION. CEILING ESIXITCHEDHN NOTE EXPOSED MINIMUM BARREL LENGTHS ARE INCLUSIVE UP 70 30YPH WIND VELOCITIES IN THE PROTECTED AREA. (PROTECTED AREA) *RECOMMENDED EXPOSED MINIMUM BARREL LENGTHS ALSO APPLY TO HORIZONTAL SIDEWALL DRY SPRINKLERS* RECOMMENDED DRY SPRINKLER SEAL ARRANGEMENTS WET PIPE (STANDARD DRY PENDENT SPRINKLER SHOWN) WET PPE r r ONEATED AREA) KOa>(LM CHEATED AREA) NINIMIN EXPOSED EXPOSED BARREL R BARREL LENGTH DECKDTE FLASHING INSIDE FACE I SEAL LENGTH (SEE RASCO}4003910 (SEE ABOM (RECOMMENDED)ENDED) CLEARANCE HOLE i i INSULATED FREIIEIi i OR COOLER STRUCTURE OR EXTERIOR FRAMING i R (PROTECTED AREA) DRY SPRINKLER (PROTECTED AREA) DRY SPRINKLER IN COLD AREA IN COLD AREA NEW157FG10 Fig. 10 7.