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Simple Heating System Size:Washington State <br /> This heating system sizing calculator is based on the Prescriptive Requirements of the 2012 Washington State Enemy 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 Contact Information <br /> Unit E3 Townhome Polygon Northwest_ <br /> Eclipse Jamie '`Aubrey : "_ -y <br /> Everett,Washington (425)586-7700 °- <br /> Heating System Type: O Forced Air Furnace 0 Heat Pump <br /> To see detailed instructions for each section,place your cursor on the word"Instructions". <br /> Design Temperature <br /> Instructions I — Design Temperature Difference(AT) 47 <br /> f Everett JC a,.._._,.. ST=Indoor(70 degrees)-Outdoor Design Temp <br /> Area of Building JJJ <br /> Conditioned Floor Area <br /> Instrucsona Conditioned Floor Area(sq ft) 1,560 <br /> Average Ceiling Height Conditioned Volume <br /> Instructions Average Ceiling Height(ft) 8.5 13,260 <br /> Glazing and Doors U-Factor X Area = UA <br /> Instructions 0.30 241 72.27 <br /> Insulation <br /> Attic U-Factor X Area = UA <br /> Instructions .. .__...__._ �.— _ _ _... _...—, <br /> R 49 ___ i j 0.026 688 17.89 <br /> Single Rafter or Joist Vaulted Ceilings U-Factor Area UA <br /> Instructions No Vaulted Ceiling ,n this project --- <br /> Above Grade Walls(see Figure 1) U-Factor Area UA <br /> Instructions <br /> R-21 . j 0.056 :..1,801, 100.86 <br /> Floors U-Factor Area UA <br /> Instructions - <br /> 11 R 30 J <br /> - 0.029 430 12.47 <br /> - <br /> Below Grade Walls(see Figure 1) U-Factor Area UA <br /> Instructions I <br /> No Below Grade Walk in this project , --- --- <br /> L r <br /> Slab Below Grade(see Figure 1) F-Factor Length UA <br /> Instructions ' ""'" '"-"- _-- <br /> o Slab Below Grade w this project --- <br /> N <br /> Slab on Grade(see Figure 1) _ F-Factor Length UA <br /> lnstr'uctions f _.... ....___. _... j <br /> F R-10 Perimeter - J 0.540 75 40.50 <br /> Location of Ducts <br /> Instructions _ _ Duct Leakage Coefficient <br /> Conditioned Space V_I <br /> L <br /> — J 1.00 <br /> Sum of UA 243.98 <br /> Envelope Heat Load 11,467 Btu/Hour <br /> Figure 1. Sum of UA X AT <br /> Air Leakage Heat Load 6,731 Btu/Hour <br /> VolumeX 0.6 XAT X.018 <br /> Above Grade Building Design Heat Load 18,198 Btu/Hour <br /> r._ Air Leakage+Envelope Heat Loss <br /> Building and Duct Heat Load 18,198 Btu I 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 25,477 Btu/Hour <br /> Building and Duct Heat Loss X 1.40 for Forced Air Furnace <br /> Building and Duct Heat Loss X 1.25 for Heat Pump <br /> 61-r <br /> (07/01/1 <br />