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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 /> LAYTON RESIDENCE REMODEL STALER DESIGN LLC <br /> 1101 E Marine View Dr, AO Box 13942 <br /> Everett,WA 98202 Mill Creek,WA 98082 <br /> Heating System Type: 00 Other Systems (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) 49 <br /> eiet=P3 AF, „ <br /> ST=Indoor(70 degrees)-Outdoor Design Temp <br /> Area of Building <br /> Conditioned Floor Area <br /> "stru"t'""' Conditioned Floor Area(sq ft) 868 <br /> Average Ceiling Height Conditioned Volume <br /> Instructions Average Ceiling Height(ft) 7.0 6,076 <br /> Glazing and Doors U-Factor X Area = UA <br /> instructions <br /> 0.30 49 14.64 <br /> Skylights U-Factor X Area = UA <br /> Instruction~; 0.50 -- <br /> I <br /> Insulation <br /> Attic U-Factor X Area = UA <br /> instructions Select R fall a 'v No selection _ --- <br /> Single Rafter or Joist Vaulted Ceilings U-Factor X Area _ UA <br /> ItStMCtions Select R-valts No selection <br /> Above Grade Walls(see Route 1) U-Factor X Area UA <br /> Instructions Ie_t R vaIR, :, No selection <br /> Floors U-Factor X Area UA <br /> instructions <br /> Sele ' No selection I --- <br /> ct R-Value . <br /> omw,.a�, <br /> Below Grade Walls(see Figure 1) U-Factor X Area UA <br /> instruction; 0.042 777 32.64 <br /> 21 Interior r I. <br /> Slab Below Grade(seeFiourel) F-Factor X Length UA <br /> In51!'Elz:ttGnS ,., 1 <br /> select condnioomg ♦ ? No selection J <br /> • .,n ., .. <br /> Slab on Grade(see houre11 F-Factor X Length_ UA <br /> R-value No selection J _— <br /> Location of Ducts <br /> Duct Leakage Coefficient <br /> 1.00 <br /> Sum of UA 47.28 <br /> Envelope Heat Load 2,317 Btu/Hour <br /> Figure 1. Sum of UA X AT <br /> Air Leakage Heat Load 3,215 Btu/Hour <br /> Volume X 0.6 X AT X.018 <br /> AbaveGrede ; Building Design Heat Load 5,532 Btu 1 Hour <br /> Air Leakage+Envelope Heat Loss <br /> Building and Duct Heat Load 5,532 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 7,745 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 L <br /> (07/0!/13) <br />