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` Simple Heating System Size: Was*gton State 0 <br /> This heating system sizing calculator is based on the Prescriptive Requirements of the 2012 Washington State Energy Code(WSEC)and RCCA <br /> Manuals J and S This calculator will calculate heating loads only.ACCA procedures for sizing cooling systems should be used to determin,�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 LI-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 Exteision <br /> Program at(360)956-2042 for assistance. <br /> Project Information Contact Information <br /> FOFEed NF <br /> Plait�4s5 <br /> Heating System Type: <br /> To see detailed instructions for each section,place your cursor on the word"Instructions". <br /> Design Temperature <br /> Instructions Design Temperature Difference(AT) 46 <br /> Lynnwood AT=Indoor(70 degrees)-Outdoor Design Temp <br /> Area of Building <br /> Conditioned Floor Area <br /> Instructions Conditioned Floor Area(sq ft) 2;435' <br /> Average Ceiling Height Conditioned Volume <br /> Instructions Average Ceiling Height(ft) 85 20,698 <br /> Glazing and Doors U-Factor X Area = UA <br /> Instructions 0.30 438 131.40 <br /> Insulation <br /> Attic U-Factor X Area = UA <br /> Instructions --- = <br /> R_49 .�, 0.026 996 25.90 <br /> Single Rafter or Joist Vaulted Ceilings U-Factor Area UA <br /> InstructionsNo Vaulted Ceilings in this project. LA - <br /> Above Grade Walls(seeFigure.9 U-Factor Area UA <br /> Instructions LR-21 0.056 2,500 140.00 <br /> �'• <br /> Floors U-Factor Area UA <br /> Instructions 0.029 470' 13.63 <br /> Lg R-30 <br /> Below Grade Walls(see Figure 1) U-Factor Area UA <br /> Instructions ,_ _.... ..., <br /> No Below Grade Walls in this protect. <br /> Slab Below Grade(seeFigure 1) F-Factor Length UA <br /> InstructionsNo Slab Below Grade in this project <br /> Slab on Grade(see Figure l) F-Factor Length UA <br /> Instructions — — " �— � "�� 0.54082.',. 44.28 <br /> R-SO Perimeter <br /> Location of Ducts <br /> InstructionsLL _ -- _•_ Duct Leakage Coefficient <br /> nrnnditioned Space w <br /> 1.10 <br /> Sum of UA 355.21 <br /> Envelope Heat Load 16,339 Btu/Houi <br /> Figure 1. Sum of UAXAT <br /> Air Leakage Heat Load 10,283 Btu/Hout <br /> •,,,,, VolumeX 0.6XATX.018 <br /> A6oveGrade Building Design Heat Load 26,622 Btu/Hour <br /> Air Leakage-Envelope Heat Loss <br /> Building and Duct Heat Load 29,284 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 40,998 Btu/Hour <br /> Building and Duct Heat Loss X 1.40 for Forced Air Fumace <br /> Building and Duct Heat Loss X 1.25 for Heat Pump <br /> ��. \ (07/01/13) <br />