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Simple Heating System Size: Washington State <br /> This heatinq svstem sizinq calculator is based on the Prescriptive Requirements of the 2012 Washinqton State Enerqv Code(WSEC)and ACCA <br /> Manuals J and S.This calculator will calculate heatinq loads onlv.ACCA procedures for sizinq coolinp svstems should be used to determine coolina <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 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 Extension <br /> Program at(360)956-2042 for assistance. <br /> Project Information Contact Information <br /> Unit E3 Townhome Polygon Northwest <br /> Silver Lake Townhomes Alaina Robertson <br /> Everett,Washington (425)606-0005 <br /> Heating Svstem Type: OO Fo��ed n��w��a�e Q Heat Pump <br /> To see detailed instructions for each section,p/ace your cursor on the word"Instructions". <br /> Desiqn Temperature <br /> t�,s�����i�o„�; __.. � Design Temperature Difference(4T) 47 <br /> � EcCrC[1 JC � nT=Indoor(70 deg�ees)-Outdoor Design Temp <br /> �:.:..,, ..T ss::m� <br /> Area of Buildinq <br /> Conditioned Floor Area <br /> �"'""`���„'� Conditioned Floor Area(sq ft) 1,585 <br /> Average Ceiling Height Conditioned Volume <br /> �"'°''"'`'°�' Average Ceiling Height(ft) 8.5 13,473 <br /> Glazinq and Doors U-Factor X Area = UA <br /> �':'""�'.'„'°� 0.30 269 80.70 <br /> Insulation <br /> Attic U-Factor X Area = UA <br /> "„��"""'""' 0.026 263 6.84 <br /> u-•is� •� <br /> -- ..__ -�`" _____ <br /> Single Rafter or Joist Vaulted Ceilings U-Factor Area UA <br /> n,�i�����t�n��> � _.� � --- � <br /> . Wo V;�iRed Cedmgs in[his pro)ecL � <br /> .._�. ..w�.�,,._.','"",��:, <br /> Above Grade Walls�see Fryure�� U-Factor Area UA <br /> i:,:.:���„n�>�: -- � 0.056 528 29.57 <br /> R-2! � <br /> � 2 <br /> Floors U-Factor Area UA <br /> Itts4ructionS .. ... .n....... . ,w.,.�_ <br /> k_3J �� 0.029 379 10.99 <br /> ..,,, �, <br /> Below Grade Walls�SeeFrq��e+J U-Factor Area UA <br /> �ne;cni�ecnc. . ._ -. --- � --- <br /> !�n(k•law Fratle Y�alls in this pro�fe[. <br /> . _.. ,e.µ.. �3�.,�,-' ..,� <br /> �..�...._� - <br /> Slab Below Grade�see F;q�.e n F-Factor Length UA <br /> i�,strur.tioiu, , � . ,.�__ � --- � <br /> , Nc Slab E3�Iow GrBI!F in thi5 D�uje[�t. � <br /> �._.�.�_.... :,&�tr.. <br /> Slab on Grade�5ee Fro�.e n F-Factor Length UA <br /> i�,�i���c��o�,-. �,..._ ___ I <br /> i<iu rc��mete� � 0.540 81 43.88 <br /> Location of Ducts <br /> ;""�'�"��'°"'• �• Duct Leakage Coefficient <br /> � ConC[irnedSpace .... ..... . .� <br /> ._..... .._..._.__.�.____ �I�we�.,. __�..:. 1.00 <br /> Sum of UA 171.97 <br /> Envelope Heat Load 8,083 Btu/Hour <br /> Fi ure 1. s�moruaxnr <br /> -��..A\ Air Leakage Heat Load 6,839 Btu/Hour <br /> �,'" <br /> - - VolumeX 0.6XdTX.018 <br /> �4 �n�bo����a�ae �p Building Design Heat Load 14,921 Btu/Hour <br /> `.; :^-9_ <br /> Ai�Leakage+Envelope Heat Loss <br /> �? - '�� Building and Duct Heat Load 14,921 Btu/Hour <br /> Ducts in unconditioned space:Sum of Building Heat Loss X 1.f 0 <br /> Ducts in condilioned space:Sum of Building Hcal Loss X 1 <br /> Maximum Heat Equipment Output 20,890 Btu/Hour <br /> Building and Duct Heat Loss X 1.40Ia Porced Air Fumace <br /> Building and Duct Heat Loss X 125 for Heat Pump <br /> �� � (07/01/13J <br />