2002 78TH PL SE 2017-09-05 - Laserfiche WebLink

Simple Heating System Size: Washington State This heating system sizing calculator is based on the Prescriptive Requirements of the 2012 Washington State Energy Code(WSEC)and ACCA Manuals J and S.This calculator will calculate heating loads only.ACCA procedures for sizing cooling systems should be used to determine cooling loads. 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. The incorporated insulation requirements are the minimum prescriptive amounts specified by the 2012 WSEC. 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 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(360)956-2042 for assistance. Project Information Contact Information Plari 1`816. ;, - Heating System Type: To see detailed instructions for each section,place your cursor on the word"Instructions". Design Temperature Instructions Design Temperature Difference(AT) 46 Lynnwood -4 AT=Indoor(70 degrees)-Outdoor Design Temp Area of Building Conditioned Floor Area Instructions Conditioned Floor Area(sq ft) E7 1,816 Average Ceiling Height Conditioned Volume Instructions Average Ceiling Height(ft) 8.5, 15,436 Glazing and Doors U-Factor X Area = UA Instructions 0.30 L45 73.50 Insulation Attic U-Factor X Area = UA Instructions f r - "� 0.02E 941 -- ?_4.47 n_qn Single Rafter or Joist Vaulted Ceilings U-Factor Area UA Instructions No Vaulted Ceilings in this project " u Above Grade Walls(see Figure 1) U-Factor Area UA Instructions - R-21 0.056 x ;'�,( 117.60 --- -- `: Floors U-Factor Area UA Instructions R 30 �.; 0.029 1 ,a 5.80 Below Grade Walls(see Figure f) U-Factor Area UA Instructions `-- No Below Grade Walls in this project - Slab Below Grade(see Figure 1) F-Factor Length UA Instructions No Slab Below Grade in this project. - Slab on Grade(see Figure 1) F-Factor Length UA Instructions .az. R-10 Perimeter r: 0.540 41 22.14 Location of Ducts Instructions ��_...: �,� Duct Leakage Coefficient LT1[ nunconditloedSpace 1.10 Sum of UA 243.51 Envelope Heat Load 11,201 Btu I Hour Figure 1. SumofUAXAT w Air Leakage Heat Load 7,669 Btu/Hour VolumeX 0.6XATX.018 Above Grade Building Design Heat Load 18,870 Btu/Hour Air Leakage+Envelooe Heat Loss Building and Duct Heat Load 20,757 Btu/Hour Ducts in unconditioned space:Sum of Building Heat Loss X 1.10 Ducts in conditioned space:Sum of Building Heat Loss X 1 Maximum Heat Equipment Output 29,060 Btu/Hour Building and Duct Heat Loss X 1.40 for Forced Air Furnace Building and Duct Heat Loss X 1.25 for Heat Pump , (07101113)