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` . , FORMR4OS'2014 . MANDATORY ��U�� . ��Um� � `�` `� � � ` REQUIREMENTS � ` - O R40u2.3 Building Cavi ties(Mandatory). Building framing cavities shall not be used as ducts mplenums. O q403.3 Mechanical system piping insulation(Mandatory). Mechanical system piping capable of carrying fluids above 105pr(4|*C) or below erF(13^[)shall bo insulated ma minimum o,R-3.. n403.3.1 Protection o,piping insulation. O �3.4.1 Circulating hot water 'systems(Mandatory). Circulating hot water systems shall be provided with an automatic mreadily accessible manual switch that can turn off the hot-water circulating pump when the system is not inuse. R403.4.3 Heat traps(Mandatory). Storage water heaters not equipped with integral heat traps and having vertical pipe risers shall have heat traps installed on both the inlets and outlets.External heat traps shall consist of either a commercially available heat trap or a O downward and upwardbend~~least~-'''inches"~^—`—the hot water distribution~fine and�cold water line located as close as possible to the storage tank. O R403.4.4vVaterhpote,enrienciooVmunuaton0 O n000.4.4.1 Storage water heater temperature controls . R400.4'u'1.1 Automatic controls. Service water heating systems shall be equipped with automatic temperature controls capable of adjustment from the lowest to the highest acceptable temperature settings for the intended use.The minimum -temperature getting range shall be from 1uo~Fm140^F(3u"Cmuo~o). . Ru��.4.1.2 Shut down. A separate switch o,aclearly marked circuit breaker shall bopmvi dod$opermit the power supplied 0o electric service systems mba turned off.A separate valve shall be provided to permit the energy supplied to the main bumer(s) pf combustion types nf service water heating systems tobo turned off. O R4nu.4.4.o Water heating equipment. Water heating equipment installed in residential units shall meet the minimum efficiencies cx Table C4o4.2in Chapter 4of the Florida Building Code,Energy Conservation,Commercial Provisions,for the type of equipment installed. Equipment used to provide heating functions as part of a combination system shall satisfy all stated requirements for the appropriate water heating category. Solar water heaters shall met the criteria Section R4Vu.4.4.c.1. - . R403.4.4:2.1 Solar water heating systems. Solar systems for domestic hot water production are rated by the annual solar energy factor of the ayatem.The solar energy factor ofa system shall be determined from the Florida Solar Energy Center Directory uf Certified Solar Systems.Solar collectors shall be tested in accordance'with ISO Standard 9806,Test Methods for Solar Collectors, and SRCC Standard TM-1,Solar Domestic Hot Water System and Component Test Protocol,Collectors in installed solar water heating systems should meet the following criteria: 1. so installed with atilt angle between 1ndegee and^U degrees o,the horizontal;and r. Bn installed atao orientation within*o degrees vf true south. O R403.5 Mechanical ventilation(Mandamq0. The building shall be provided with ventilation that meets the requirements ofthe Florida Building Code,Residential or Florida Building Code,Mechanical,as applicable,or with other approved means of ventilation. Outdoor air intakes and exhausts shall have automatic or gravity dampers that close when the ventilation system is not operating. ` O R400.6 Heating and cooling equipment(0ondatory). The following sections an mandatory for cooling and heating equipment. O R403.6.1 Equipment sizing. Heating and cooling equipment shall ba sized in accordance with AcCAManue|G based nnthe equipment loads Palou|atedinaccordance with ACCA Manual J or other approved heating and cooling calculation methodologies, based onbuiWi loads foe 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"/Section nav2./.This code does not allow designer safety factors,provisions for future expansion or other factors which affect shall not include loads created by local intermittent mechanical ventilation such 90 standard kitchen and bathroom exhaust systems. ^ �03�1.1 Cooling equipment capacity. Cooling only equipment shall be selected aothat its total capacity is not less than the calculated total load,but not more than 1.15 times greater than the total load calculated accordingthe procedure selected in Section 403.6,or the closest available size provided by the manufacturer's product lines.The corresponding latent capacity of the equipment shall not be less than the calculated latent load. ' 11/1//20/712:3ePN EnnrgyGauge@ USA'FlaR000014 -Section R4os.4.1Cum Page 2ofo