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i <br /> , Simple Heating System Size: Washington State <br /> This heating system sizing calculator is based on the Prescriptive Requirements of the 2012 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 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 /> SDA Homes Gary Nash @ Nash&Asso Architects <br /> Unit 2-9 Typical-Everett Townhomes (425)828-4117 x7489 <br /> gary@Nash-Architects.com <br /> Heating System Type: Ci 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 /> _- -- - Design Temperature Difference(AT) 49 <br /> i Everett Paine AFB. ' AT=Indoor(70 degrees)-Outdoor Design Temp <br /> Area of Building <br /> Conditioned Floor Area <br /> .. Conditioned Floor Area(sq ft) 1,175 <br /> Average Ceiling Height Conditioned Volume <br /> "';'a'; ''''` Average Ceiling Height(ft) 8.1 9,494 <br /> Glazing and Doors U-Factor X Area = UA <br /> 0.30 216 64.80 <br /> Skylights U-Factor X Area = UA <br /> • 0.50 --- <br /> Insulation <br /> Attic U-Factor X Area = UA <br /> 9 ; 0.026 • 572, 14.87 <br /> L s5':f,!aS^n8 R-49 Nr . <br /> Single Rafter or Joist Vaulted Ceilings U-Factor X Area UA <br /> ' Select R-Value mr No selection --- <br /> Above Grade Walls(see Figure 1) U-Factor X Area UA <br /> ._... "`" 0.056 1,842 103.14 <br /> �±" I R-21 Intermediate ` <br /> -i ,1+24;3 :: <br /> Floors U-Factor X Area UA <br /> !t6' U, .Ys '? <br /> 4 .4.: • 0.029 448 12.99 <br /> iR30 <br /> Below Grade Walls(see Figure 1) U-Factor X Area UA <br /> i,c r,3�ai::,ai:: ._,... ...�.__....�.:..� is-: No selection _ -- <br /> Select R value <br /> Slab Below Grade(see Figure 1) F-Factor X Length UA <br /> t>,r..a:::ors<+ le - -- No selection <br /> Select conditioning <br /> Slab on Grade(see Figure 1) ,,. F-Factor X Length UA <br /> 0.540 55 29.88 <br /> i R-10 Perimeter <br /> Location of Ducts <br /> ,.;., _ _ __._._ , Duct Leakage Coefficient <br /> Unconditioned Space v 1.10 <br /> Sum of UA 225.68 <br /> Envelope Heat Load 11,058 Btu I Hour <br /> Figure 1. Sum of UAXAT <br /> Air Leakage Heat Load 5,024 Btu/Hour <br /> .~ VolumeX 0.6 X AT X.018 <br /> Above Grade i Building Design Heat Load 16,083 Btu/Hour <br /> Air Leakage+Envelope Heat Loss <br /> Below Grade - Building and Duct Heat Load 17,691 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 24,767 Btu/Hour <br /> Building and Duct Heat Loss X 1.40 for Forced Air Furnace <br /> Building and Duct Heat Lossc7//f/f) <br /> X 1.25 for <br /> Heat Pump <br /> (07/01/13) <br />