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' ' Simple Heating System Size: Wa—r 4ton State <br /> Tis treating system sizing calculator is base ---7-ie Prescriptive Requirements of the 2012 Washing-1i::__._rte Energy Code(WSEC)and ACCA <br /> Manuals J and S.This calculator will calculate heating loads only.ACCA procedures for sizing cooling systems should be used to determine cooling <br /> loads. <br /> The glazing(window)and door portion of this calculator assumes the installed glazing and door products have an area weighted average U-factor of <br /> 0.30. The incorporated insulation requirements are the minimum prescriptive amounts specified by the 2012 WSEC. <br /> Please fill out all of the green drop-downs and boxes that are applicable to your project.As you make selections in the drop-downs for each section, <br /> some values will be calculated for you.If you do not see the selection you need in the drop-down options,please call the WSU Energy Extension <br /> Program at(360)956-2042 for assistance. <br /> Project Information O. forced fur 0 Heat Pump Contact Information <br /> Plan 2435 <br /> Heating System Type: <br /> To see detailed instructions for each section,place your cursor on the word"Instructions" <br /> Design Temperature <br /> Instructions -= Design Temperature Difference(AT) 46 <br /> Lynnwood <br /> AT=Indoor(70 degrees)-Outdoor Design Temp <br /> Area of Building <br /> Conditioned Floor Area <br /> Instructions Conditioned Floor Area(sq ft) 2,435 <br /> Average Ceiling Height Conditioned Volume <br /> Instructions Average Ceiling Height(ft) 8.5 20,698 <br /> Glazing and Doors U-Factor X Area = UA <br /> Instructions 0.30 438 131.40 <br /> Insulation <br /> Attic U-Factor X Area = UA <br /> ill'e,,c'r"'" R-49 v kvi 0.026 I 996 25.90 <br /> Single Rafter or Joist Vaulted Ceilings U-Factor Area UA <br /> liNo Vaulted Ceilings in this project. <br /> Above Grade Walls(see Figure i U-Factor Area UA <br /> instructions <br /> 0 R-21 V0.056 2,500 140.00 <br /> i 44.4 <br /> Floors U-Factor Area UA <br /> instructions R-3o 0.029 L 470 13.63 <br /> Below Grade Walls(seeFigure1) U-Factor Area UA <br /> instructions [ <br /> ØNo Below Grade Walls in this project. --- L_ <br /> Slab Below Grade(seeFfgurel) F-Fr.tnr Length IIA <br /> 6Instructions " " <br /> No Slab Below Grade In this project. or i_ <br /> •voMi <br /> Slab on Grade(seeFigure1) F-Factor Length UA <br /> Instructions """'" """'"' 0.540 82 44.28 <br /> 0 R-10 Perimeter <br /> Location of Ducts <br /> €rstructio;n -illi —,4.. Duct Leakage Coefficient <br /> Unconditioned SpaceV ill <br /> 1.10 <br /> Sum of UA 355.21 <br /> Envelope Heat Load 16,339 Btu/Hour <br /> Figure 1. Sum ofuAXAT <br /> ,,,,° Air Leakage Heat Load 10,283 Btu I Hour <br /> VolumeX 0.6XATX.018 <br /> Mill Building Design Heat Load 26,622 Btu/Hour <br /> ^-,...--�_• ,�A _ <br /> Air Leakage+Envelope Heat Loss <br /> -- Building and Duct Heat Load 29,284 Btu/Hour <br /> Ducts in unconditioned space:Sum of Building Heat Loss X 1.10 <br /> Ducts in conditioned space:Sum of Building Heat Loss X 1 <br /> Maximum Heat Equipment Output 40,998 Btu I Hour <br /> Building and Duct Heat Loss X 1.40 for Forced Air Furnace <br /> Building and Duct Heat Loss X 1.25 fo{Heat Pump <br /> (. <br /> (07/01/13) <br />