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1110 <br /> i <br /> 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 Manuals <br /> J and S.This calculator will calculate heating loads only.ACCA procedures for sizing cooling systems should be used to determine cooling loads. <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,some <br /> 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 Program at <br /> (360)956-2042 for assistance. <br /> Project Information Contact Information <br /> LISA McCABE SIX DRAFTING <br /> 2001 HOYT AVE P.O.BOX 2972 <br /> EVERETT,WA.98201-2239 WOODINVILLE,WA.98072 <br /> Heating System Type: ()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) 47 <br /> Everett 1C AT.Indoor(70 degrees)-Outdoor Design Temp <br /> Area of Building <br /> Conditioned Floor Area <br /> Instructions Conditioned Floor Area(sq ft) 800 <br /> Average Ceiling Height Conditioned Volume <br /> Instructions Average Ceiling Height(ft) 8.5 6,800 <br /> Glazing and Doors U-Factor X Area = UA <br /> Instructions <br /> U 0.30 . 0.300 160 48.00 <br /> Skylights U-Factor X Area = UA <br /> Instructions 0.50 0 -- <br /> Insulation <br /> Attic U-Factor X Area = UA <br /> Instructions <br /> R 49 0.026 605 15.73 <br /> Single Rafter or Joist Vaulted Ceilings U-Factor X Area UA <br /> Instructions No selection <br /> Select R Value <br /> Above Grade Walls(see Figure 1) U-Factor X Area UA <br /> Instructions — 0.056 1,504 84.22 <br /> R•21 Intermediate <br /> Floors U-Factor X Area UA <br /> Instructions 0.029 410 11.89 <br /> R30 v <br /> Below Grade Walls(see Figure 1) U-Factor X Area UA <br /> Instructions No selection -- <br /> II R value V <br /> Slab Below Grade(see Flaus ti F-Factor X Length UA <br /> Instructions No selection -- <br /> 0 conditioning v <br /> Slab on Grade(see Figure tt _. F-Factor X Length UA <br /> Instructions R-io Perimeter 0.540 61 32.94 <br /> Location of Ducts <br /> Instructions Duct Leakage Coefficient <br /> Condltioned Spacee _ 1.00 <br /> Sum of UA 192.78 <br /> Envelope Heat Load 9,061 Btu I Hour <br /> Figure 1. Sum ofUAXAT <br /> Air Leakage Heat Load 3,452 Btu/Hour <br /> Volume X 0.6 X AT X.018 <br /> Above Grade Building Design Heat Load 12,513 Btu/Hour <br /> Air Leakage*Envelope Heat Loss <br /> Building and Duct Heat Load 12,513 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 17,518 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 /> 315 <br />