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1997 <br />Instructions: <br />A. The following steps will determine the maximum heating system sizE�: <br />1. Structural loss, value (1): May be taken directly from the Proposed UA box on Page 2. <br />2. Air leakage loss, Valu.� (2): This is the volume (FP) of the conditioned space in the dwelling. <br />3. Duct Loss, value (3): Insert vatue from BTU/HR, Box (a).Climate Factor, <br />4. eT: The local ASHRAE climate factor is ° F tor your jurisdicGon <br />To determine oT: (dT= the temperature dilference behves� Outdoor design femperahne and <br />Indoor Design Temperafure). The heating or cooling Outdo r Design Temperatures shell be <br />selected from 0.6% column for winter and 0.5% column for summer from the Puget Sound <br />Chapter of ASHRAE publication "Recommended Outdoor Design Temperatures, Washiny!on <br />State, ASHRAE.). Indoor Design Temperature shall be .'0 °F for heating and 78°F for cooling. <br />Ezample: For Elma, WA: Winter <br />Indoor Design Temperature =70°F <br />Outdoor Design Temperature =24°F <br />...so... (70° F�-(24° F) = 46 AT <br />5. Calculate values a, b, and c by multiplying the numbers in each horizontal row. <br />6. Add values a, b, and c. <br />7. Multiply the sum from Step #6 by 2.0 to obtain the maximum heating system output for the building. <br />8. If the heating system is electric, divide the BTU/hr. value from Step #7 by 3413 to get kWatt output. <br />�Permit No. <br />Nams <br />SfiNt <br />ciy <br />Counry <br />:PhonM <br />Y• � <br />E yis {. Ir� , <br />Manufacturer W C- S G O <br />Typ� ot Systam E_ Ic c. <br />� ModNt % z � `_; C', F <br />Heat!�g Ouput: <br />KW <br />Btu/Hr. <br />Notss: <br />,;`:: <br />Design Heat Load (D.H.L) � <br />(a+b+c) <br />Maxlmum HeaUng Output <br />(Gas, o(l, propane, wood) � <br />(Deslgn Heat load x 2.0) <br />OR <br />(Electric, heat pumps) I c� <br />(D. H. L. X 2.0 = 3413) <br />g�9f� <br />(BTU/Hr) <br />(BTU/Hr) <br />a, g <br />(kWatts) <br />ea.iwi.meMw <br />