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� y � TFP515 � Page 4 of 8 - DeS; � For dry pipe system installations, use areas,�the potential for the formation � only the side outlet of maximum 2-1/2 of coridensation in the sprinkler and Criteria - �nch reducing tee when locating Series subsequent ice build-up is increased.if ' DS-C Dry Type Sprinklers directly this con'densation is not controllecl,ice TYCO Series DS-C 3 mm bulb-type Dry below the branch line.Otherwise, use build-up can occur that might damage th "nkler and/or r vent Type Concealed Pendent Sprinkiers the confguratiori shown in Figure 6 to e dry type spn p e (fY3535) are UL and C-UL Listed assure complete water drainage frbm proper operation in a fire situation. . aboye Series DS-C Dry Type Sprinlilers as quick response, standard spray ancJ the branch line. Failure to do so Use of the Model DSB-2 Dry Sprinkler sprinklers for use in accordance with may result in pipe freezing and wa#er Boot,described in technical data sheet the current NFPA standard. damage. TFP591 and shown in F'igure 8, will Series DS-C_5 mm buib-type Dry.Type _ provide the recommended seal. Concealed Pendeht Sprinklers(fY3555) � '� � are UL and C-UL Listed as standard � `� response, standard spray sprinklers Do not install Series DS-C Dry Type Fo'r applications where a bore greater for use in accordance with the current Sprinklers into any other type ftting tiian 1-S/4 inches in diameter has NFPA standard. without first consulting the Technical been cut through tha entire height of Services Departinent.Failure to use the an insulated freezer ceilin creatin a Series DS-C Dry Type Sprinklers are appropriate fitting may resuJt in one of g g only listed when installed with Series the following: cavity above the sprinkler support cup RFII Concealed Cover Plates having (Figure 8),the cavity must not be filied. a factory-applied painted or meEallic •failure of the sprinkler to operate properly finish. due to formation of ice over the lnlet Series DS-C Dry Type Sprinklers must P�ug orliinding of the lnlet Plug not be used in applications where,the •insufficient engagement of the lnlet air pressure above the ceiling is greater pipe-threads`with consequent leakage thah that below. Down drafts through , the Support Cup could delay sprinkler Drainage operation in a fire situation. In accorciance with the minimum requirements of ,the National Fire Sprinkler Fittings Protection F,ssocia#ion for ciry pipe Install 1 inch NPT'Series DS-C Dry Type sprinkler systems, branch, cross, and Coricealed Pendent Sprinklers in the 1 feed=rriain pipirig connected to Dry inch NPT outle4 or run of the following Sprinklers and subject to freezing fittings: temperatures must be pitched for prdper cJrainage. • malleable or ductile iron threaded tee fittings that meet the dimen- Exposure Len,gth sional requirements of ANSI B16.3 WFien using Dry Type Sprinklers in wet (Class 150) pipe sprinkler systems'to protect areas • cast iron threaded tee fittings that subject to freezin.g temperatures,`use meet the dimensional requirements Table A to determine a sprinliler's appro- of ANSI B16.4(Class 125) priate ezposed barrel lengtfi to,prevent water from freezing in the_co'nnecting Do not install Series DS-C Dry Type piPes due to coiiduction.The ezposed Concealed Pendent Sprinklers into barrel length measu'rement mgst be elbow fittirigs.The Inlet of the sprinkler taken from,the face of the sprinkler can contact the interior of the elbow. fitting to tfie surface of the structure or The unused outlet of the threaded tee insulation that is exposed to the heated - is plugged as shown in Figures 5 and 6. area.Refer to Figure 7 for an example. You can also install Series DS-C Dry- For protected area temper.atures Type Sprinklers in the outlet. between_ those given , above, the minimum recommerided length from The configuration shown in Figure 5 is the face of the fitfing to,the„outside of only applicable for.wet pipe systems the protected area may be determiried wtier.e the sPrinkler ftting and water- by interpolafirig 6etween#he indicated filled pipe above the.sprinkler fitting are values. not subject to freezing and where the length of the Dry Type Sprinkler has fhe Do not attempt to add additional insu- minimum exposure length depicted in lation around the barrel.iri the heated Figure 7.Refer to the Exposure Length area as a method to minimize conden- section. sation.This will reduce the calculated "Exposure Length". For wet pipe system installations of 1 inch NPT Series DS-C Dry Type Clearance Space Sprinklers connected to CPVC piping, In accordance with Section 8.4.9.2 of use only the following TYCO CPVC the 2010 edition of NFPA 13,where dry fittings: sprinklers are connected to wet pipe • 1"x 1"NPT Female Adapter sprinkler systems protecting insulated (P/N 80145). freezer structures,the clearance space around the sprinkler bairel of Dry Type • 1"x 1"x 1"NPT Sprinkler Head $prinlilers must be sealed. Due to Adapter Tee(P/N 80249). temperature differences between two