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Simple Heating System Size:Washington State <br /> This heating system sizing calculator is based on the Prescriptive Requirements of the 2015 Washington State 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 2015 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 A Glenn Morgan Construction <br /> 6832 Beverly Ln 6832 Beverly Ln <br /> Everett,WA 98203 425-344-4872 <br /> Heating System Type: O All Other Systems 0 Heat Pump <br /> To see detailed instructions for each section,place your cursor on the word"Instructions". <br /> Design Temperature <br /> Instructions - Design Temperature Difference(AT) 49 <br /> Everett Paine AFB J <br /> AT=Indoor(70 degrees)-Outdoor Design Temp <br /> Area of Building <br /> Conditioned Floor Area <br /> instructio is Conditioned Floor Area(sq ft) 1,949 <br /> Average Ceiling Height Conditioned Volume <br /> instructions Average Ceiling Height(ft) 8.5 16,567 <br /> Glazing and Doors U-Factor X Area = UA <br /> Instructions <br /> 0.30 212 63.60 <br /> Skylights U-Factor X Area = UA <br /> Instructions 0.50 <br /> Insulation <br /> Attic U-Factor X Area = UA <br /> Instructions I R-49 w , 0.026 1,019 26.49 <br /> Single Rafter or Joist Vaulted Ceilings U-Factor X Area UA <br /> Instructions No selection <br /> Select R Value --- <br /> ^'•=-'s <br /> Above Grade Walls(see Figure 1) U-Factor X Area UA <br /> Instructions 0.056 2,092 117.15 <br /> j R-21 Intermediate 1, <br /> Floors U-Factor X Area UA <br /> Instructions No selection 1,019 <br /> Select R Value w I <br /> Below Grade Walls(see Figure 1) U-Factor X Area UA <br /> Instructions _. _._ _ ! - <br /> Select R value .� J No selection --- <br /> Slab Below Grade(see Figure 1) F-Factor X Length UA <br /> Instructions <br /> Select conditioningNo selection <br /> Slab on Grade(see Figure 1) F-Factor X Length UA <br /> IllStillCt1011ti <br /> Select R Value .,..V..� No selection <br /> J --- <br /> Location of Ducts <br /> Instructions Duct Leakage Coefficient <br /> Unconditioned Space _ <br /> 1.10 <br /> • <br /> Sum of UA 207.25 <br /> Envelope Heat Load 10,155 Btu/Hour <br /> Figure 1. Sum of DA X AT <br /> Air Leakage Heat Load 8,767 Btu/Hour <br /> Volume 0.6X AT X.018 <br /> Above Grade Building Design Heat Load 18,922 Btu/Hour <br /> '-' Air Leakage+Envelope Heat Loss <br /> Building and Duct Heat Load 20,814 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 29,140 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 /> (07/01/13) <br />