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V� ptt�c �,d ��, 2,'t j 13 <br />, Simple Heating System Size: Washington State � <br />This heatinq svstem sizinq calculator is based on the Prescriptive Requirements of the 2012 Washinaton State EneraV Code (WSEC) and ACCA <br />Manuals J and S. This calculator will calculate heatinq loads onlv. ACCA procedures for sizinq coolina svstems should be used to determine coolinq <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 ali 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 lnformation Contacf lnformation <br />Unit El Townhome Polygon Northwest <br />Silver LakeTownhomes Alaina Rohertson <br />Everett, Washin ton j425) 606-D005 <br />H@atlflC] SySt@fTl Typ@: OO Forced Air Fumace Q Heat Pump <br />To see detailed instructions for each section, place your cursor on the word '7nsfructions". <br />Desiqn Temperature <br />�7,5ar�e<:t9ons ___..._ _ _ _. �..._ • Design Temperature Difference (4T) <br />Everett JC <br />{ _ _ _ _ � . AT = Indoor (70 degreesJ - Outdoor Design Temp <br />�. ....__,____ - .__._ <br />Area of Buildinq <br />Conditioned Floor Area <br />tr3su�,�uo�,� Conditioned Floor Area (sq ft) <br />Average Ceiling Height <br />'"5;r�'��'°"� Average Ceiling Height (ft) <br />Glazinq and Doors <br /><<iStCilCilOil� <br />Insulation <br />Attic <br />F. .. _-___ _. � . <br />iitScf IILCiCrt� � <br />R-49 � „ <br />,, <br />4�.,, M�� - ' � <br />Single Rafter or Joist Vaulted Ceilings <br />_ _ __ __ __. _____ , <br />IrsYrt��tior;_ __ _ --- -- �----____ ,_—. � <br />�No Vaultetl Ceihngs In this proJett ��-. <br />� � �:��a <br />Above Grade Walts �:re F�gure �� <br />instructicns -- _...._---�-__.-- --------- --- � <br />.� . . . . . . -� <br />�, , <br />Floors <br />_ _ .___... ._- _ <br />i�istruclio:is ----� . . . , . . _ — ---- .:� <br />R-30 � <br />_ _,-.„ ._,-s • <br />�;- �...,. <br />Below Grade Walls �seeFr9ure �) <br />_ _ _. _ _ ____ ._ __---- _ _ _ _ _ <br />InsVuctic�:s _... �._ �.�..�_,..._._.__._._._. <br />� Na 8?low Grade walls in lhls pro)ett. �; <br />Slab Below Grade raee Fia�re n <br />__. <br />I;,s:ruciicns __._- --� ...�_---.--- <br />No Slab Below Grade m this project. � <br />_ _'- :>�'�-'.� ..p� - w_:3 <br />Slab on Grade �:ee Frc�re yi <br />ii�structia�s - ___.:. _--- ..----------- --�_._.— <br />R-30 Perime[er � ;1_� <br />S. <br />. ...... ..__ . .. <br />Location of Ducts <br />;ris_rue,I�r,•s �� � <br />Condit�oned Space �� � <br />�� � -= � <br />Fiqure 1. <br />-�". ^���`'•z, <br />Above Grade <br />. -_ <br />i. Aebw�xk ; � <br />1,368 <br />Conditioned Volume <br />8.5 11,628 <br />U-Factor X Area = UA <br />0.30 1$1 54.42 <br />U-Factor X Area = UA <br />0.026 fi02 15.65 <br />U-Factor Area <br />� � <br />U-Pactor Area <br />0.056 493 <br />U-Factor Area <br />0.029 345 <br />U-Factor Area <br />� 0 <br />F-Factor Le�.J <br />UA <br />UA <br />23.13 <br />UA <br />10.01 <br />UA <br />UA <br />F-Factor Len th UA <br />0.540 66 35.64 <br />Duct Leakage Coefficient <br />9.00 <br />Sum of UA <br />138.85 <br />47 <br />Envelope Heat Load 6,526 Btu / Hour <br />Sum of UA X 4T <br />Air Leakage Heat Load 5,902 Btu / Hour <br />VolumeX 0.6XOTX.018 <br />Building Design Heat Load 12,428 Btu / Hour <br />Air Leakage + Envelope Heat Loss <br />Building and Duct Heat Load 12,428 Btu ! Hour <br />Ducls in unconditioned space: Sum ol8uilding Heat Loss X 7.10 <br />Ducts in conditioned space: Sum of Building Heat Loss X 7 <br />Maximum Heat Equipment Output 17,399 Btu / Hour <br />Building and Duct Heat Loss X 1.401or Forced Air Fumace <br />Building and Duct Heat Loss X 125 !or Heat Pump <br />t/ <br />(07/01/13) <br />