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- � . . , �� . FORM R405-2014 �444AitlIDA,TORY REQUI6�ElV1EMTS - (Continued) 1� R403.2.3 Bu!lding Cavities{Mandatary}. BuBding framing cavities shall not be used as ducts or plenums. - ❑ R4Q3.3 MechanIca!system pip➢ng insulation{Mandatory). Mechanical system piping capatale of carrying fluids above 105°F(41°C) ' or below 55°F(13°C)shall be insulated ta a minimum of R-3., R403.3.7 Protection of piping insulatlnn. � R4Q3.4.1 Circutating hot water sysfems(Mandatoryj. Circulating haf wafer sysfems shall be provided with an aufomatic or readily accessible maoual switch that can tucn afF the hat-water circulating pump when the system is not in use. � R4Q3.4.3 Heat traps(Mandatoryj. Storage water heaters not equipped with integra(heat traps and having vertica(gipe risers sha! ave heat traps installed on both the ic�lets and autlets.External heaf traps sha!!consist of eifher a commercia!!y 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 possib(e to the storage fank. , � R403.d.4 lNater heater efficiencies(Mandatoryj. {� R4Q3.4.4.1 Storage water heafer temperature cantrats . F2403.4.4.1.9 Automatic contrals. Service water heating systems sha!!be equipped with automatic temperature confrols capable of adjustment from the lowest to the highest acceptable temperature settings for tha intended use.The minimum temperature setting range shall be from 100°F#0140°F(38°C to 60°C). . R403.4.4.1.2 Shut dawn. A separate switch or a cleariy marked circuit breaker sha(I be provided to permit the power supplied to electric service systems to be furned off.A separate valve shai!be pravided to permit the energy suppiied to the main burner(s} of combustion types af senrice water heating systems to be turned aff. p R443.4.4.2 Water heattng equipment. Water heating equipment installed in residenUa!units shall meet the minimum efficiencies of Table C404.2 in Chapter 4 of the Flarida Building Code,Energy Conservation,Commercial Provisions,for the type of equipment insfalied. Equipment used to provide hea#ing functions as part of a combination system shall satisfy a(]sfated requiremenfs for fhe apprapriate water heating category. Solar water heaters shal!met the cciteria Section R403.4.4.2.1. . R403.4_4.2.1 Salar water heating systems.Solar systems for domestic hot water production are rafed by!he annual solar energy factor of the system.The solar energy factor of a system shall be determined from the Florida Salar Energy Cente�Directory of Certified Soiar Systems.Soiar coilectors shai)be tested in accordance with ISO Standard 9806,Test Methods for Salar Coltectars, and SftGC Standard TM-1,Solar Romestic Hot Water System and Gomponent Tesf Protocol,Collectors in installed solar watec heating systems shouid meet the following criteria: � 9. Be instelled with a tilt angle between 10 degrees and 40 degrees of the har�zontai;and 2. Be installed at an orientafion within 45 degrees of true soufh. � 12403.5 Mechanical ventilation(Mandatoryj. The buiiding shall be provided witfi ventiiation that meets the requirements of the ftarida Building Code,Residentia2 or Florida Buiiding Code,fvtechanical,as applicable,or with other approved means of ventilation. Qutdoor air intakes and exhausts shall have automatic or gravlty dampers that close when the ventilation system is not operating. p R403.6 Heating and coaling equipment(Mandatoryj. The follawing sections are mandatory for coaling and heating equipment. a RA03.6.1 Equipment sizing. Heating and cooling equipment shalt be sized in accordance with ACGA Manuat S based on fhe equipment taads caiculated in accardanee w'sth AGCA fvianna!S or other approvsd heating and cooling calculation methodologies, based on building loads for the directionel orientation of the building.The manufacturer and model number of the outdoor and indoor units(if split system)sfia(I be submiried along with the sensible and totat cooting capacifies at the design canditlans described in Secfion R302.9.This code does nat aitow designer safety factors,ptovisions for future expansion or other factars which affect equipment sizing.System sizing calculations shall not include loads created by local intermittent mechanical ventilation sucfi as standard kitchen and bathraom exhaust systems. • R403.6.1.1 Cooling equipment capacity. Cooling only equipment shall be selecfed so thaf its fotal capacify is not fess fhan the caiculated tafat load,buf not more than 1.15 times greatet than the tofa!load calculated according to the procedure selected 3n Section 403.6,or the closest available size provided by the manufacturer's product lines.The corresponding tatent capacity of ihe equipmenf shall not be iess than the catcuiated Iatent Ipad. 9J7J2017 7:5'1 AM EnergyGaugeO USA-FlaRes2014 -Sectian R405.4.'!Gom Page 2 of 3