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None, except where mechanical ventilation is specified <br /> by the proposed design, in which case: <br /> Annual vent fan energy use: <br /> Mechanical ventilation kWh/yr=0.03942 x CF-4+29.565 x (Nb,+ 1) As proposed <br /> where: <br /> CFA =conditioned floor area <br /> Nb,=number of bedrooms <br /> Internal gains lGain= 17,900+23.8 x CFA+4104 x Nb, (Btu/day per Same as standard <br /> dwellingunit) reference design <br /> Same as standard <br /> reference design, <br /> plus any additional <br /> mass specifically <br /> Internal mass An internal mass for furniture and contents of 8 pounds designed as a <br /> per square foot of floor area thermal storage <br /> element'but not <br /> integral to the <br /> building envelope <br /> or structure. <br /> For masonry floor slabs, 80 percent of floor area <br /> covered by R-2 carpet and pad, and 20 percent of floor As proposed <br /> directly exposed to room air. <br /> Structural mass For masonry basement walls, as proposed,but with <br /> insulation required by Table 8402.1.4 located on the As proposed <br /> interior side of the walls <br /> For other walls,for ceilings,floors, and interior walls, <br /> wood frame construction As proposed <br /> As proposed f-q-r-ether-than eleetfie healing-v4thout-a <br /> ia.aNuiiap, whefe the pfopesed design utilizes eleetfie <br /> hefftifig,ys,ithout a heat pump the standafd fefefeflee [As proposed] <br /> design shall be an aif settfee heat ptimp meeting the <br /> , . ts of Seetion 0403 of the!EGG Comnaefeia4 <br /> Heating systems d,e Fuel type: same as proposed design. As proposed <br /> Efficiencies: As proposed <br /> Electric: Air-source heat pump with prevailing federal <br /> minimum standards. <br /> Nonelectric furnaces: natural gas furnace with As propose <br /> prevailing federal minimum standards. <br /> Nonelectric boilers: natural gas boiler with prevailing As propose <br /> federal minimum standards. <br /> Ca aci : sized in accordance with Section R403.7. As pronosed <br /> 23 <br />