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. N. ! 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 /> The glazing(window)and door portion of this calculator assumes the installed glazing and door products have an area weighted average U-factor of 0.30. <br /> 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,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 /> MONTANTI ADU-PLAN#M360 Michael Montanti <br /> 4501-1/2 Rucker Ave 4501 Rucker Ave <br /> Everett,WA 98203 Everett,WA 98203 <br /> Heating System Type: OO 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 IC AT=Indoor(70 degrees)-Outdoor Design Temp <br /> Area of Building • <br /> Conditioned Floor Area _ <br /> Instructions Conditioned Floor Area(sq ft) 360 <br /> Average Ceiling Height Conditioned Volume <br /> Instructions Average Ceiling Height(ft) 7.1 2,554 <br /> Glazing and Doors U-Factor X Area = UA <br /> Instructions . <br /> 0.30 6 - 1.80 <br /> Skylights U-Factor X Area = UA <br /> Instructions 0.50 0 -- <br /> Insulation <br /> Attic U-Factor X Area = UA <br /> Instructions 0.026 360 9.36 <br /> 1 R-49 w i <br /> Single Rafter or Joist Vaulted Ceilings U-Factor X Area UA <br /> Instructions 0.027 0 <br /> R-38 Vented v.; 1 <br /> �_ <br /> Above Grade Walls(see Figure 1) U-Factor X Area UA <br /> Instructions 0.056 2, 48 142.68 <br /> R-21 Intermediate IP'-',_ <br /> Floors U-Factor X Area UA <br /> Instructions 0.029 0 <br /> R-30 i <br /> Below Grade Walls(see Figure 1) U-Factor X Area UA <br /> Instructions - 0.042 0 <br /> R-21 Interior V <br /> L,... • <br /> Slab Below Grade(see Figure 1) F-Factor X Length UA <br /> Instructions — <br /> i 0.570 0 <br /> ' <br /> R-S Thermal Break at slab edge V ' <br /> Slab on Grade(see Figure 1) F-Factor X Length _ UA <br /> Instructions 0.360 0 <br /> R-10 Fully Insulated T i <br /> Location of Ducts J <br /> Instructions Duct Leakage Coefficient <br /> No Dud _s 1 1.00 <br /> Sum of UA 153.84 <br /> Envelope Heat Load 7,230 Btu/Hour <br /> Figure 1. Sum ofUAXAT <br /> Idle!" <br /> Air Leakage Heat Load 1,296 Btu/Hour <br /> Volume X 0.6 X AT X.018 <br /> Above Grade Building Design Heat Load 8,527 Btu/Hour <br /> ' Air Leakage+Envelope Heel Loss <br /> Building and Duct Heat Load 8,527 Btu/Hour <br /> Ducts in unconditioned space:Sum of Building Heat Loss X 1.10 <br /> Ducts in conditioned space:Sum of budding Heat Loss X 1 <br /> Maximum Heat Equipment Output 11,937 Btu I Hour <br /> Building and Duct Heat Loss X 1.40 for Forced At Furnace <br /> Building and Duct Heat Loss X 1.25 for Heat Pump <br /> 1. \5 (07/01/139 <br />