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• <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 /> Unit G Townhome Polygon Northwest Company <br /> Eclipse Jamie Aubrey <br /> Everett,Wa (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 - - Design Temperature Difference(ST) 47 <br /> Everett JC I <br /> �J <br /> AT=Indoor(70 degrees)-Outdoor Design Temp <br /> Area of Building <br /> Conditioned Floor Area <br /> Instructions Conditioned Floor Area(sq ft) 1,860 <br /> Average Ceiling Height Conditioned Volume <br /> Instructions Average Ceiling Height(ft) 8.5 16,660 <br /> Glazing and Doors U-Factor X Area = UA <br /> Instructions 0.30 295 88.44 <br /> Insulation <br /> Attic U-Factor X Area = UA <br /> Instructions - -_- - _ v 0.026 872 22.66 <br /> I R 49- - r-- -- em - <br /> Single Rafter or Joist Vaulted Ceilings U-Factor Area UA <br /> Instructions �I <br /> - -- <br /> I No Vaulted Ceilings in this project --- <br /> Above Grade Walls(see Figure 1) U-Factor Area UA <br /> Instructions 0.056 1,883. 105.45 <br /> Floors U-Factor Area UA <br /> Instructions , — 0.029 570 `� 16.53 <br /> ,.„"IR30 - <br /> Below Grade Walls(see Figure 1) U-Factor Area UA <br /> Instructionsi _— <br /> No Below Grade Walls in this project. . <br /> Slab Below Grade(see Figure 1) F-Factor Length UA <br /> Instructions _... <br /> I No Slab Below Grade in this project --- <br /> Slab on Grade(see Figure 1) F-Factor Length UA <br /> Instructions _ 0.540 88 47.52 <br /> R-l0 Penmeter v <br /> Location of Ducts <br /> Instructions . r Duct Leakage Coefficient <br /> I Condnionc d Space <br /> 1.00 <br /> Sum of UA 280.60 <br /> Envelope Heat Load 13,188 Btu/Hour <br /> Figure 1. Sum of UA X AT <br /> Air Leakage Heat Load 8,457 Btu I Hour <br /> VolumeX 0.6 X AT X.018 <br /> Above Grade Building Design Heat Load 21,645 Btu/Hour <br /> Air Leakage+Envelope Heat Loss <br /> - Building and Duct Heat Load 21,645 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 30,303 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 /> (07/0 <br />