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TFP181 Page 3 of 6 FACE OF CLEARANCE HOLE Design SPRINKLER DIAMETER Criteria FITTING � DIMENSION C � The TYCO Series RFII Concealed Pen- SPRINKLER dent Sprinklers are intended for fire SUPPORT CUP protection systems designed in ac- ASSEMBLY cordance with the standard instal- lation rules recognized by the appli- i/2��(12,7 mm) cable Listing or Approval agency; for THREADED example, UL Listing is based on NFPA p ADJUSTMENT 13 and VdS Approval is based on the CEA 4001. FACE OF CEILING, For more information on LPCB and RETAINING RING VdS A rovals,contact T co Fire Su MOUNTING PP Y p- SURFACE pression & Building Products at the following office: Enschede, Netherlands Telephone:31-53-428-4444 Fax:31-53-428-3377 � � � � The Series RFII Concealed Pendent �--`-�--T--t-r-� Sprinklers are only listed and approved 3/16"to 11/16" MANUFACTURER DEFLECTOR COVER PLATE with the Series RFII Concealed Cover (4,8 to 17,5 mm) PRESET GAP IN DROPPED RETAINER Plates having a factory applied finish. REFERENCE 3/32"(2,4 mm) POSITION ASSEMBLY � • COVER PLATE COVER PLATE Do not use the Series RFII in applica- PROFILE DEPTH DIAMETER tions where the air pressure above DIMENSION B DIMENSION A th@ C21Ill7g IS greater than that be- low. Down drafts through the Sprin- kler/Support Cup Assembly can delay A.3-1/4 inches(82,6 mm) C:2-3/8 to 2-5/8 inches(60,3 to 66,7 mm) sprinkler operation in a fire situation. B 3/16 inches(4,8 mm) D•1-3/4 to 2-1/4 inches(44,5 to 57,2 mm) Operation FIGURE 2 When exposed to heat from a fire, the SERIFS CONCEALED SPRINKLER INSTALLATION D/MENSIONS Cover Plate, normally soldered to the Retainer at three points, falls away to expose the SprinkledSupport Cup Assembly The Deflector—supported by the Guide Pins—then drops down to its operational position. The glass Bulb contains a fluid that ex- pands when exposed to heat. When the rated temperature is reached, the fluid expands sufficiently to shatter the glass Bulb, activating the sprinkler and allowing water to flow.