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FORM R405-2014 MANDATORY REQUIREMENTS - (Continued) � R403.2.3 Building Cavities(Mandatory). Building framing cavities shall not be used as ducts or plenums. ❑ R403.3 Mechan3cal system piping insutation(Mandatory}. Mechanical system piping capable of carrying fluids abave 145°F(41 aC} . or below 55°F(13°C)shall be insulated to a minimum of R-3., R403.3.1 Protection af piping Insulatlon. � RA03.4.1 Circulating hot water systems(Nlandatory). Girculating hoi water systems shal!be provided with an automatic ar readily accessibie manuai switch tnat can tum off the hot-water circu(ating pump when the system is not in vse. C) RR03.4.3 Heat traps(Mandatory). Storage water heaters not equipped with integral heat traps and having vertical pipe risers shall have heat traps installed on 6oth the inlets and outlets. Euternal heat traps shall cansist of either a commercially available lieat trap or a downward and upward bend of at least 3�/z inches(89 mm)in the hot water distributian line and cold water Iine[ocated as clase as passible to the storage tank. � R403.4.4 Water heater efficiencies(idiandatory). � R403.4.4.1 Storage wa#er heater temperature controls . R403.4.4.7.1 Automatic controls. Service wafer heating sysYems shall be equipped with automatic iemperature coairols capable af adjustment fram the Iowesf ta the highest acceptabie temperafure setti�gs for the intended use.7he minimum temperature setting range shall be from 100°F to 140°F(38°C to 60°C). . R403.4.4.1.2 5hut dawo. A saparate swPtch or a clearly marked circuit breaker shall be provided ta permit the power supplied to electric service systems to be turned off.A separate valve shall be provided to permit the energy supplied to the main burner(s) of combustiean types of service water heating systems.to be turned off. p R403.4.4.2 Water heating equipment. Water heating equipment installed in residential units shall meet the minimum efficiencies of Table C404.2 in Chapter 4 of the Florida Building Code,Energy Canservation,Commercial Provisions,for the type of equipment installed. Equipment used to provide heating tunctions as part of a combinafion system sha11 satisfy aIl stated requirements for the apprapriate water heating category. So(ar water heaters shall met the criteria Sectian R403.4.4.2.1. . R403.4.4.2.1 Solar water heating systems. Solar systems for domesYic hot water production are rated by the annual sofar energy factor af the system.The solar er�ergy factor afi a system shal!be determined fram the Fiorida Solar Energy Center Directory of Certified 5alar Systems.Solar collectors shall be tested in accordance with ISO Standard 9806,Test Methads for Solar Collectors, and SRCG Standard TM-1,5olar pomestic hloi Water System and Component Test Pratacoi,Gailectors irt installed salar water heating systems shou(d meet the fo!(owing criteria: 1. Be installed with a tilt angle between 10 degrees and 40 degrees of the horizontal;and 2. Be insta(1ed at an orientation within 45 degrees af true sauth. p R403.5 Mechanical ventilation(Mandatory). The building shall be provided with ventilation that meets the requirements of the Fforida Buiiding Code,Residential or Ffarida 8ui(ding Gode,fvlechartical,as applicable,or wiih other approved rr�eat�s of ventilation. Outdoor air intakes and exhausts shal(have automatic or gravity dampers that close when the ventilation system is nat operating. ❑ R403.6 Heating and caolirtg equipment(Ariandatory}. The following sections are mandatary for cooting and heating equipment. � R403.6.7 Equipment sizing. Heating and cooling equipment shall be sized in accordance with ACCA Manual S based on the equipment loads calculated io accordance with ACCA Manua!J or other appraved heafing and cooling calculatian tnethociologies, based on bui(ding loads for the directiona(orientation of the building.The manufacturer and model number of the outdoor and indoor units(if split system)shall be submitted along with the sensible and total cooling capacities at the design canditions described in Section R302.1.i7�is cade does nat allow designer safety factors,provisions for future expansion or ather factors which affect equipment sizing.5ystem sizing calculations shall not include loads created by local intermittent mechanical ventilation such as standard kitchen and bathroom exhaust systems. • Rd03.6.1.1 Caating eqnipment capacity. Goo(ing only equipment sha(I be se(ected so that its total capacity is not(ess than the calculated total load,but not more than 1.15 times greater than the total load calculated according to the procedure selected in Section 403.6,or the closest available size pravided by the manufacturer's product lines.The corresponding latent capacity of the equipment sha(!not be less than the calculated latent(oad. 1013dl2017 i 2.59 PM EnergyGaugeC�USA-F(aRes2014 -Section Fi445.4.1 Com � Page 2 of 3