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Simple Heating System Size: Washington State <br />This heatina svstem sizina calculator is based on the Prescri�tive <br />he glazing (window) and door portion of this calculator assumes the installed glazing and door products have an area weighted average U-factor of <br />.30. The incorporated insulation requirements are the minimum prescriptive amounts specified by the 2012 WSEC. <br />lease 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 />ome 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 />rogram at (360) 956-2042 for assistance. <br />Project Informatron Contact Information <br />Unit E3 Townhome Polygon Northwest <br />Silver Lake Townhomes Alaina Robertson <br />Everett, Washin ton (425} 606-0005 <br />Hedilflq SVStelll TVp2: OO ForcedAirFumace Q HeatPump <br />To see detarled instructions for each section, place your cursor on the word "lnstructions". <br />Desiqn Temperature <br />ir s,ruc.ions Design Temperature Difference (OT) <br />` Evere(C JC �: pT = Indoor (70 degrees) - OuldoorDesign remp <br />l � . . ....__._. ._.:��:s� <br />Area of Buildinq <br />Conditioned Floor Area <br />ins<<uct�o��> Conditioned Floor Area (sq ft) <br />Average Ceiling Height <br />ins,r�:cti��,� Average Ceiling Height (ft) <br />Glazinq and Doors <br />Instructions <br />Insulation <br />Attic <br />�nstruc,;a,s _ _ — -- -- --- --- ---------- — <br />� R-49 � �...7I <br />r, ' ; ..;, .,;{ ..�wss .. _ _,�- . _ —�...., .: � ^j:;:c �, x� <br />....__..... .. . <br />Single Rafter or Joist Vaulted Ceilings <br />_ _ _ _ _ _ <br />Instrucffons � ---... __---_.__�_._�.� � :� <br />No vaulted Ceilinfls In thls vroJect. •� <br />, <br />Above Grade Walls �:�eFreu.er� <br />Instructions - --- --- _ _ _— <br />� R21 �{,�� <br />4�. ;,E <br />Floors <br />_ __ _._._ .__. <br />Instructi�ns � - <br />R 30 f ;,;� <br />. �,_ .,... , <,.. �.., <br />. . ...,._.. . _ _ . ..... . . .._. <br />Below Grade Walls �5ee Frg�re �� <br />_ _-. . ---- - - <br />�nstructions ( -- — � <br />I No l3elo�v Grade Walls in thls pro�ect. �; <br />lY. __ ; <br />Slab Below Grade r5ee F�u�.e ri <br />_ _ <br />Instructions 4I ho Slab Below Grade In this projec[ �� ��; �� <br />l <br />Slab on Grade �see Fiaure n <br />Insbuctions ._.____._.._..._._.�:.._-----.._..:�_�_---.v_:_._ <br />�mR-!0 Perimeter ! f;,+,, <br />Location of Ducts <br />�„_:<<�.� ����;,� _ _ _ _1 <br />� CondiUoned Space � �' <br />Ffqure 1. <br />,.x�.�m.. <br />`"`� <br />Abave Grade <br />,t ,_ - �- _ <br />1,585 <br />Conditioned Volume <br />8.5 13,473 <br />U-Factor X Area = UA <br />0.30 269 80.70 <br />U-Factor X Area = UA <br />0.026 263 6.84 <br />U-Factor Area UA <br />� 0 <br />U-Factor Area UA <br />0.056 528 29.57 <br />U-Factor Area UA <br />0.029 379 10.99 <br />U-Factor Area UA <br />--- 0 --- <br />F-Factor Le� UA <br />F-Factor Len th UA <br />0.540 81 43.88 <br />Duct Leakage Coefficient <br />1.00 <br />Sum of UA <br />171.97 <br />47 <br />Envelope Heat Load 8,083 Btu / Hour <br />Sum o( UA X OT <br />Air Leakage Heat Load 6,839 Btu / Hour <br />VolumeX O.6X4TX.018 <br />Building Design Heat Load 14,921 Btu / Hour <br />Air Leakage + Envelope Heat Lass <br />Building and Duct Heat Load 14,921 Btu / Hour <br />DucEs in unconditioned space: Sum of Building Heat Lass X 1.10 <br />Ducts in condi6'oned space: Sum of Building Heat Loss X 1 <br />Maximum Heat Equipment Output 20,890 Btu / Hour <br />Building and Duct Heat Loss X 1.40 !or Foiced Air Fumace <br />Building and Duct Heat Loss X 1.25 for Heat Pump <br />(07/01/13) <br />