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FORM R405-2014 MANDATORY REQUIREMENTS - (Continued) o ( Fi403.2.3 Building Cavities(Mandatory). Building framing cavities shall not be used as ducts or plenums. O l�4�3.3 Mechanical system piptng insulation(Mandatory}. Mechanical system piping capable of carrying fluids above 1 Q5°F(41°G} or below 55°F(13'C)shall be insulated to a minimum of R-3., R4Q3.3.1 Protectian af piping Insulatlon. � R403.4.1 Circulating hot water systems(Mandatoryj. Circulating hot water systems shaN be provided with an autamatic or readily ccessible manual swiich that can tum aff the hat-water circulafing pump when the system is not in use. � Ft403.4.3 Heat traps(Mandatory). Storage water heaters not equipped with integral heat traps and having vertical pipe risers shall have h�eat traps installed on both the inlets and outlets.Extemal heat traps shall consist of either a commercially available heat trap or a downward and upward bend of at least 3�12 inches{89 mrn}in the hat water disfribufion line and cold water Iine located as c3ose as possible to the storage tank. � R4U3.4.4 Water heater efficiencies{Mandatory). � R403.4.4.1 Storaga wa#er heater temperature controis � . RA03.4.4.1.1 Automatic controls. Service water heating systems shall be equipped with automatic temperature controls capaE�le of adjustment from the lowest to the highest acceptable ternperature settings far the intended use.ihe minimum , tempera#ure setting range shall be from 100°F to 140°F(38°C to 60°C). . R903.4.4.i.2 Shut down, A separate switch or a clear(y marked circuit breaker shall be pravided to permit the pawer supplied to electric service systems to be tumed off.A separate valve shali be provided to permit the energy supplietl to the main bumer(s) of combustion types of service water heating systems to be tumed off. � R403.4.4.2 Water heating equipment. Water heating equipment instalied in residential units shail meet the minimum efficiencies of Table C404.2 in Chapter 4 of the Florida Building Code,Energy Conservation,Commercial Provisions,far the type of equipment installed. Equipment used to provide heating func#ians as part of a eambi�atian sysEem shal!satis€y all stated requirements far the appropriate water ' heafing categary. Soiar wafer heaters sha(1 met the criteria 5ection R4q3.4.4.2.1 . R403.4.4.2.1 Solar water heating systems. Salar systems for domestic hot water production are rated by the annual solar energy factor of the system.The salar energy factor of a system sha!(be determi�ed from the Florida Solar Energy Genter Directory ofi Certified Solar Systems.Solar callectors shall be tested in accordance with ISO Standard 9806,Test Methods for Solar Collectors, and SRCC&tandard TM-1,So{ar Qomestic Hot Wafer System and Gomponent Test Protocol,CoUectors in installed solar water � heating systems should rneet Ehe following criferia: 1. Be installed with a tilt angle between 10 degrees and 40 degrees of the horizontal;and 2. Be instai(ed at an orientation wlthio 45 degrees of true south. a p R403.5 Mechaniaal ventilation(Mandatory). The building shall be provided with ventilation that meets the requirements of the Fl�eida BuiEding Code,Residentiai or Florida Buiiding Gode,Mechanlca[,as applicable,or with other approved means of ventilatia�. Ou�door air intakes and exhausts shati have automatic or gravity dampers that close when#he ventilation system is not operating. p R403.6 Heating and caa!!ng equipment(NEancEatory). Tf�e fo(lowing sec#ians are mandatary far coaling and heating equipment. ' � R403.6.1 Equipment sixing. Heating and caoling equipment shall be sized in accordance with ACCA Manuai S based on the � � equipment loads calculated in accordance wiih ACGA Nlanuai,3 or other appraved neating and cooiing.calcuEafion methoda[og�es, based on building loads for the directiona(orientation of the building.The manufacturer and mode(number of the outdoor and , indoor units(if split system)shall,be submitted along with the sensible and total cooling capacities at the design conditions described in Section R302.1.This oode does nat allow designer sa€ety factors,provisions far future expansion or ather factors { whicfi affect equipment sizing.System sizing caiculations shall not include loads created by local intermittent mechanical ventila#ion such as standard kitchen and bathroom exhaust systems. ■ Ft403.fi.1.1 Gaoling equtpment capacity. Gaoling onEy equipment shaI3 be selected sa that ifs tatal capacity is not less than the j calculated total laad,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 provided by the manufact�rer's produat(inss.The corresponding latent capacity of ihe � � equipment sha11 not be less than the calculated Iatent load. i ; , ; � � � , � �i � . 11/7/2di 6 1 d:42 AM EnergyGaugeO USA-FiaFies2014 -Seofion R405.4.1 Cam Page 2 of 3 � � --