3329 31ST DR 2018-04-11 - 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 Unit E Townhome Polygon Northwest Company Eclipse Jamie Aubrey Everett,Wa (425)586-770D Heating System Type: lt Forced Air Furnace 0 Heat Pump To see detailed instructions for each section,place your cursor on the word"Instructions". Design Temperature Instructions _._ Design Temperature Difference(AT) 47 Everett JC AT=Indoor(70 degrees)-Outdoor Design Temp Area of Building Conditioned Floor Area Instructions Conditioned Floor Area(sq ft) 1,163 Average Ceiling Height Conditioned Volume Instructions Average Ceiling Height(ft) 8,5, 9,886 Glazing and Doors U-Factor X Area = UA Instructions 0.30 1 ' 38.13 Insulation AtticU-Factor X Area = UA jj _ t — 1 Instructions R-49 „ 0.026 579 ` 15.05 Single Rafter or Joist Vaulted Ceilings U-Factor Area UA Instructions ( I No Vaulted Ceilings in this project L. Above Grade Walls(seeFigurel) U-Factor Area UA Instructions 0.056 590 33.04 ` 5-21 Floors U-Factor Area UA Instructions 4 R-30 0.029 53S 15.46 Below Grade Walls(see Figure 1) U-Factor Area UA Instructions No Below Grade Walls in this project. J -' Slab Below Grade(see Figure 1) F-Factor Length UA Instructions No Slab Below Grade in this project. y Slab on Grade(see Figure 1) F-Factor Length UA Instructions -- _— --- R 0.540 22 11.88 -10 Perimeter Location of Ducts Instructions _---- - -- Duct Leakage Coefficient !l I Conditioned Space 1.00 Sum of UA 113.56 Envelope Heat Load 5,337 Btu I Hour Figure 1. Sum of UAXtT Air Leakage Heat Load 5,018 Btu/Hour ,. _., VolumeX 0.6 XAT X.018 Above Grade Building Design Heat Load 10,355 Btu/Hour Air Leakage+Envelope Heat Loss Building and Duct Heat Load 10,355 Btu/Hour Ducts in unconditioned space:Sum of Building Heal Loss X 1.10 Ducts in conditioned space:Sum of Building Heat Loss X 1 Maximum Heat Equipment Output 14,497 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 (07/01/13)