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� FORM R�05-2014 . M,�1ND,p►TORY REQIJIREMENTS - (Continued) � R403.2.3 Building Cavities(Ma�datory). Buiiding framing cavities shall not be used as ducts or plenums. ❑ R4tI3.3 Mechanica!sys#em piping insulatian(Mandatory}. Mechanica(system piping capable of oarrying fluids above 105°F(41�C) or below 55°F(13°C)shall be insulated to a minimum of R-3., „ R403.3.1 Pra#ection of piping insulation. � R403.4.1 Girculating hot water systems(Mandatory). Girculating hot water sysfems shall be provided with an automatic or readily accessible manual switah that can turn off the hat-water circulating pump when the system is nat in use. � R403.4.3 Heat treps(Mandatory). Storage water heaters not equipped with integral heat traps and having vertical pipe risers shall have heat traps insta8ed on both the inlets and ouilets.Extemai heat Traps shai!cansist of either a commercially available heat trap or a downward and upward bend of at least 3'12 inches(89 mm}in the hot water distribution(ine and coid water line located as c(ose as possible to the starage tank. � R403.4.4 Water heater efficiencles(Mandatory). � R403.4.4.1 Storage water heater temperature controls . RQ03.4.4.1.1 Antorttatic controls. Service water heating systems shal(be equipped with automatic terr�perature conirols capab(e of adjustment trom tha iowest to the highest acceptable temperature settings for the intended use.The minimum tempera#ure setting range shall be from 100°F to 140°F(38°C to 60°C). , F3403.4.4.7.2 Shut down. A separate switch or a clearly marked circuit breaker shal!be provided to permit tfie power supplied to electric service systems to be turned off.A separate valve shall be pravided to permit the energy supplied to the main bumer(s) of combusiion types of secvice water heating systems to be turned off. 0 R403.R.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 Gode,Energy Conservation,Commeroial Pravisions,for the type of equipment insta!led. Equipment used to provide heating f�ncTions as part of a cambinatian system shat]satisfy aI(stated requrrements far the appropriate water heating category. Solar water heaters shall met the criteria Section R403.4 4.2.1. . R403.4.42.1 Solar water heating systems. Saiar sysiems for domestic hat water production are rated by fhe annual sotar energy factor of#he sys#em.The solar energy factor of a system shall be determined frorn the Flarida Solar Energy Center Directory of Certified Solar Systems.Solar collectors shall be tested in accordance with ISO Standard 9806,Test Methods for 5olar Collectors, and SRCC Standard TM-i,Salar pomesiic Hot Water System and Gorrtponent Test Protocol,Gollectors in insfalled solar water heating systems sfiou(d meet the following criteria: 1. Be installed with a tilt angle between i 4 degrees and 44 degrees ofi the hocizontai;and 2. Be instai(ed at an orientatian within 45 degrees ai true souih. p R403.5 Mechanical ventilation(Mandatory). The building shall be provided with ventilation that meets the requirements of the Flarida Building Cade,Residential or Florida Building Gade,Mechanica(,as applicable,or with other approved means of ventilatian. Outdoor air intakes and exhausts shall have automatic or gravity dampers that close when the ventilation system is not operating. p i�4a3.6 Heating and cooting equipment(Mandatory). The following secfions are mandatory for coo�ing and heating equipment. � R403.6.1 Equipment sizing. Heating and cooling equipment shal!be sized in accordance with ACCA Manual S based on ihe equipmenf loads calcuEated in accardance wifh AGGA tvlanual J or other approved heating and cooling ca(culafion methadoiogies, based on building loads for the directional 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 conditions described in Seefian R302.1.This code does not allow designer safety factors,provisions far future expansion or ather factars which affect equipment sizing.System sizing calculations shall not include loads created by local intermittent mechanical ventilation such as standard kitchen and bathroom exhaust systems. � R403.fi.1.1 Cooting equipment capacity. Cooling only equipment shall be selected so that its total capacity is not less than the calculated total laad,but not more than 1 15 times greater than the total load calculated acoording to the pracedure selected in Section 403.6,ar the closest available size provided by the manufacturer's product(ines.The carresponding latent capacity of the equipment shall not be iess tfian the calculated latent load. 1 1/4/201 6 3:25 PM EnergyGauge(�USA-FlaRes2014 -Section R405.4.1 Com Page 2 af 3