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� . FORM R4d5-2014 - ItIfAN��►1`ORY REd�UiRE!!ltENTS - (Cantinued} � R403.2.3 Building Cavities(Mandatory). Building framing cavities shafi not be used as ducts or plenums. C! E2403.3 Mechanica!system piping insuEation{Mandatoryj. Mechanical system piping capable of carrying fluids above 105°F(41°C) ' or below 55°F(13°C}shail be insulated to a minimum of R-3., R403.3.1 Protectlon of piping insutation. � R403.4.1 Circuiating hot water systems(Mandatory). Circulating hot water systems shall be provided with an automatic ar readily accessible manual switch that can turn off#he hot-water circulating pump when the system is not in use. � R403.4.3 Hea#fraps{ittlandatory}. Storage water heaters not equipped with infegra(heat#raps and having vert9eal pipe risers shall ave heat traps installed on both lhe inlets and outlets.External heat traps shall consist of either a commercially available heat trap or a downward and upward bend of at least 3'/inches(89 mm)in the hot water distribution line and cold water line located as close as possible ta the starage fank. � � Rd03.4.4 Water heater efficiencies(Mandatory). � R4Q3.4.4.3 Storage water heater temperature contro]s . R403.4.4.1.1 Automatic cantrols. Service water heating systems shall be equipped with automatic kemperature controls capable of adjustment from the lowest to the highest acceptable temperature settings for the intended use.The minimum femperafure setting range shall be fram 100°F to'I40°F{38°C ta 60°C}. . R403.4.4.1.2 Shut down. A separate switch or a clearly marked clrcuit breaker shall be provided to permit the power supplied ta electric service systems fo be turned aff.A separate valve shali be provided ta permit tt�se snergy suppIied to the main burner(s} of combustion types of service water heating systems to be turned off. p R443.4.4.2 Water heating equipment Water heating equipment instailed in residen6a!uniFs shaii meet the minimum efticiencies of Table C404.2 in Chapter 4 of the Florida Building Code,Energy Conservation,Cammerciai Provisions,for the type of equipment installed. Equipment used ko provide heating functions as part of a combinatian system shall satisfy all stated requirements for the appropriate water heat9rrg cafegory. Solar water heaters shail met the criteria Sectian R403.4.4.2.9. . R403.4.4,2.1 Solar water heating systems.Solar systems for domestic hot water production are rated by the annual solar energy facfor of the system.The solar energy factor of a system shail be determined from the Florida Solar Energy Centet Directory of Certifed SoEar Systems.Sotar eollectors shali be fested in accordance with ISt3 Sfandard 9806,Test tJleihads for Solar Callectors, and SRCG Standard TM-1,Solar pomestic Hot Water System and Componenk Test Protocol,Collectors in installed solar water. hea6ng systems shauld meet the following criteria: � 1. Be installed with a tilt angte between 10 degrees and 40 degrees of#he horizontai;and 2. Be installed at an orientation within 45 degrees of true soulh. (� R4d3.5 Mechanieal ventitation(Niandatory}. The building sha11 be pro�ided wifh ventilafion that meets fhe requirements of the Florida Building Code,Residential ar Florida Building Code,Mechanical,as applicable,or with other approved means of ventila#ion. Outdoar air intakes and exhausts sha!!have automatic or gravity dampers that close when the ventilatian system is not operating. p R403.6 Heating and cooling equipment(Mandatory). The following sections are mandatory for cooling and heating equipment. � R443.6.4 Equipment sizing. Fieating and cooling equipment shali be sized in accordance with ACCA Nlanual S based on the equipment loads calculated in accordance with ACCA Manual J or other approved heating and cooling caiculation methodologies, based an building loads for the dlrectional orientatian of the building.The manufacturer and model number of the outdoor and indoor units(if split system}sha3l be submitted alang wifh the senstbte and totai coaling capacities at the design conditians described in Section R$02.1.This code does not allow designer safety factors,provisions for future expansian or other factors which atfect equipment sizing.System sizing calculations shali not include laads created by local intermittent mechanical ventilation suctt as siandard kitchen and bathroam exhausf sysfems. • R403.6.1.1 Cooling equipment capacity. Cooling aniy equipment shail be selected so that its total capacity is not less than the calculated tofat load,buf not more fhan 9.15 times greater than the fotai load caicutated according to the procedure selected in Section 4Q3.6,or the ctosest avaiiabte size provided by fhe manufacturer's product(inas.The correspanding iafent capacify of the equipment shall not be less than the calculated latent load. 9/7/2017 7:51 AM EnergyGauge�USA-FlaRes2014 -8ection R405.4.1 Com Page 2 of 3