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. . . FORM R4O5-2U14 MANDATORY REQUUUREMENTS ~ -(CO[tinneM) ' ' O R403�3amldin Cavities(Mandatory). Building framing cavities shall not ueused as ducts mplenums. O R403oMochwnical piping insulation(Mandatory). Mechanical system piping capable of carrying fluids above 1051F(41*C) m below ao*F(Io*C)shall be insulated upu minimum m*a.. n«oo.3.1 Protection ox piping insulation. O . Roou.4.1 Circulating hot water systems p0an6mnn4. 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 in use. O with integral heat traps and having vertical pipe risers shall have heat traps installed onboth the inlets and outlets.External heat traps shall consist of either a commercially available heat trap or a downward andu rduendofm/oan 3 1/2 inches(89 mm)in the hot water distribution line and cold water line located as close as possible to the storage tank. O n403.4.4 Water heater efficiencies(Manuomn)' O n403�.4-1 Storage water heater temperature controls . R403.4.4.1.1 Automatic controls. Service water heating systems shall be equipped with automatic temperature controls capable oradjustment from the lowest v,the highest acceptable temperature settings for the intended use.The minimum temperature setting range shall bo from 1no°Ftn14U^F(3apotonm"o). , circuit breaker shall be provided topermit the power supplied to electric service systems to be turned off.A separate valve shall be provided to permit the energy supplied tv the main bumo,(s) nf combustion types uf service water heating systems h,bo turned off. ` [) R4ux.4�.2 Water heating equipment. Water heating equipment installed in residential units shall meet the minimum efficiencies n[ Table C4nu.cin Chapter 4uf 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 R*Ou.*.4.r.I. . R«ou��.u1 Solar water heating systems. Solar systems for domestic hot water production are rated by the annual solar energy factor of the system.The solar energy factor of a system shall be determined from the Florida Solar Energy Center Directory of 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. Be installed with atilt angle between 10 degrees and 40 degrees of the horizontal;and z. Be installed atom orientation within 4s degrees ux true south. O RqVw'a Mechanical ventilation(MandmonA. The building shall be provided witxventilation that meets the requirements uf the Florida Building Cuda,Residential or Florida Building Code,Mechanival,as app|icab|o,or with other approved means vfventilation. Outdoor air intakes and exhausts shall have automatic or gravity dampers that close when the ventilation system is not operating. O R400.s Heating and cooling equipment(Mandomn0. The following sections are mandatory for cooling and heating equipment. [) H403a.1 Equipment sizing. Heating and cooling equipment shall be sized in accordance With ACCA Manual S based on the equipment loads calculated in accordance with ACoA Manual Jnr other approved heating and cooling calculation methodologies, based on building loads for the directional orientation of the building,The manufacturer and model number of the outdoor and- indoor unim(ifup|itoystem)xhal|baxubmitteda!ongwiththeoanmib|oondmta|nov|ingvopoohienat the design conditions d000ibodjn Section F0o2.1.This code does not allow designer safety factors,provisions for future expansion u,other factors which affect equipment sizing.oyouamnbingoalou|aUonoohaUnotinclude|nodoureouedhy|nnalintwnnittent mechanical ventilation such an standard kitchen and bathroom exhaust systems. � ^ only equipment shall be selected that its total capacity is not lets 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 4ou.6.ur the closest available size provided manufacturer's product lines.The corresponding latent capacity of the equipment shall not bo less than the calculated latent load. _ � 1t111Dm1v1:17PM EnergyGauge@ USA'FlaReoau14 -GeuhonR^n5.4.1 cpm Page 2of 3 -