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"[F] Section 903.3.1.2.3 Attics and Attached Garages. Sprinkler <br />protection is required in attic spaces of such buildings two or more stories in <br />height, in accordance with NFPA 13 and or NFPA 13R requirements, and <br />attached garages." <br />Section 903.3.1.3, NFPA 13D sprinkler systems, shall be amended to read as <br />follows: <br />"903.3.1.3 NFPA 13D Sprinkler Systems. Automatic sprinkler <br />systems installed in one- and two-family dwellings; Group R-3; Group R-4 <br />Condition 1 and townhouses shall be permitted to be installed throughout in <br />accordance with NFPA 13D or in accordance with state law." <br />Section 903.3., Installation requirements, shall be amended to add Sec. <br />903.3.1.4, Freeze protection, to read as follows: <br />"903.3.1.4 Freeze protection. Freeze protection systems for <br />automatic fire sprinkler systems shall be in accordance with the requirements <br />of the applicable referenced NFPA standard and this section. <br />"903.3.1.4.1 Attics. Only dry -pipe, preaction, or listed <br />antifreeze automatic fire sprinkler systems shall be allowed to protect <br />attic spaces. <br />`Exception: Wet -pipe fire sprinkler systems shall be allowed to <br />protect non -ventilated attic spaces where: <br />"1. The attic sprinklers are supplied by a separate floor control <br />valve assembly to allow ease of draining the attic system <br />without impairing sprinklers throughout the rest of the <br />building, and <br />"2. Adequate heat shall be provided for freeze protection as per the <br />applicable referenced NFPA standard, and <br />"3. The attic space is a part of the building's thermal, or heat, <br />envelope, such that insulation is provided at the roof deck, <br />rather than at the ceiling level. <br />"903.3.1.4.2 Heat trace/insulation. Heat trace/insulation <br />shall only be allowed where approved by the fire code official for small <br />sections of large diameter water -filled pipe." <br />27 <br />