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Simple Heating system Size:Washington State <br /> IThis heating system sizing calculator is based on the Prescriptive Requirements of the 2018 Washington Stale Energy Code(WSEC)and ACCA Manuals <br /> J and S.This tool will calculate heating loads only ACCA procedures for sizing cooling systems should be used to determine cooling loads. <br /> Please complete the green drop-downs and boxes that are applicable to your project.As you make selections in the drop-downs for each section,some <br /> values will be calculated for you.If you do not see the selection you need in the drop-down options,please contact the WSU Energy Program at <br /> energycode@energy.wsu.edu or(360)956.2042 for assistance <br /> Project Information Contact Information <br /> A&PHoldin s Marie Anderson 9 Nash&Asso Architects <br /> 79th Pi.NE,Granite Falls (425)242.7491 <br /> 04/13/2021. marleCaNash-Archttects com <br /> Heating System Type: O All OtfwS stems OO Hot" <br /> To see detailed instructions for each section,place your cursor on the word"Instructions' <br /> Design Temperature <br /> Instructions Temperature Design Ftarysvdle �� 9 Difference(AT) 47 <br /> AT=Indoor(70 degrees).Outdoor Design Temp <br /> Area of Building <br /> Conditioned Floor Area <br /> Intitructions Conditioned Floor Area(sq ft) 1.744 <br /> Average Ceiling Height Conditioned Volume <br /> Instructions Average Ceiling Height(ft) 8.4 14,702 <br /> Glazing and Doors U•Factor X Area UA <br /> Instructions <br /> U-0128 .. 0.280 315 88.14 <br /> Skylights U-Factor X Area = UA <br /> Instructions 0.50 <br /> Insulation <br /> Attic U-Factor X Area UA <br /> Instructions 4 R•49 0.026 g26 24.08 <br /> Single Rafter or Joist Vaulted Ceilings U•Factor X Area UA <br /> brstructions R•49Advvxed I 0.020 216 4.32 <br /> Above Grade Walls fses,Figure 1) J U•Factor X Area UA <br /> Insuucuons i J R-21 Intermediate . I 0.056 1.934 108.32 <br /> Floors ( J U•Factor X Area UA <br /> 1nslrriclir,irs R-38 0.025 1.142 28.55 <br /> �i <br /> Below Grade Walls(see,Figure t) J U-Factor X Area UA <br /> Instructions select R-value . I No selection C= ... <br /> Slab Below Grade heeFioure U F-Factor X Lot th J UA <br /> Instructions IN Select conditioning ., i No selection ... <br /> Slab on Grade(see Frourol) F•Factor X LoL_th J UA <br /> Instructions <br /> SelectR-value .. I No selection ... <br /> Ls� <br /> - J <br /> Location of Ducts <br /> nsuucuons Duct Leaka a Coefficient <br /> �Unconditbned Space .. g <br /> 1.10 <br /> Sum of UA 253.41 <br /> Envelope Heat Load 11,910 Btu/Hour <br /> Figure 1. Sum of UA x AT <br /> Air Leakage Heat Load 7,463 Btu/Hour <br /> Volume x 0.6 x AT x 0.018 <br /> JW Building Design Heat Load 19,373 Btu/Hour <br /> Air leakage+envelope heat loss <br /> Building and Duct Heat Load 21,310 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 I <br /> Maximum Heat Equipment Output 26.638 Btu/Hour <br /> Bui7dinv and duct heat loss x 1.40 for forced air furnace <br /> Building and duct heat loss x 1.25 for heal pump <br />