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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 <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 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, <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 /> BICKLEY DADU STALER DESIGN LLC <br /> 1917 Highland Ave PO Box 13942 <br /> Everett,WA 98201 Mill Creek,WA 98082 <br /> Heating System Type: QQ 411 Other Systems Cheat 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) 49 <br /> Everett Paine AFB I.« AT=Indoor(70 degrees)-Outdoor Design Temp <br /> Area of Building <br /> Conditioned Floor Area <br /> t5 Conditioned Floor Area(sq ft) 640 <br /> Average Ceiling Height Conditioned Volume <br /> histrut ions Average Ceiling Height(ft) 9.0 5,760 <br /> Glazing and Doors U-Factor X Area = UA <br /> 0 30 124 37.20 <br /> Skylights U-Factor X Area = UA <br /> 0.50 --- <br /> Insulation <br /> Attic U-Factor X Area = UA <br /> R - ' 0.026 640 16.64 <br /> Single Rafter or Joist Vaulted Ceilings U-Factor X Area UA <br /> Select R-Value . No selection --- <br /> Above Grade Walls(see Figure 1) U-Factor X Area UA <br /> R-21 Intermediate - 0.056 884 49.50 <br /> Floors U-Factor X Area UA <br /> R-'B v 0.025 640 16.00 <br /> Below Grade Walls _se - U-Factor X Area UA <br /> i i <br /> Select R-value No selection --- <br /> Slab Below Grade rsee Flat Pc'1) F-Factor X Length UA <br /> Select conditioning .I ; No selection_ <br /> --- <br /> Slab on Grade(seeFioure r) ( � <br /> F-Factor X LeL1 UA <br /> Select R-Value No selection --- <br /> iiii <br /> Location of Ducts <br /> Duct Leakage Coefficient <br /> Conditioned Space V <br /> 1.00 <br /> Sum of UA 119.34 <br /> Envelope Heat Load 5,848 Btu/Hour <br /> Figure 1. Sum of UAX AT <br /> ^ Air Leakage Heat Load 3,048 Btu/Hour <br /> / ` VolumeX 0.6XAT X.018 <br /> Above Grade Building Design Heat Load 8,896 Btu/Hour <br /> Air Leakage+Envelope Heat Loss <br /> _ .. Building and Duct Heat Load 8,896 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 12,454 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 />