7429 3RD DR W 2016-01-01 MF Import

INSTf �TIONS FOR E�UIPMENT SIZIK FORM General Informalion: This lorm is recommended :or sizing ihe heatfng syslems for all residenUal 6ufldings. It may be used lor commar- cial buildings wher9 approprfate. This lorm, or acceplable aflernate ca�ulatbns, musl be completed lor each dwelling unil. A separate copy shall be attached lo each set of dtawings submitted with Ihe building ;�ertnil applicalion. If you have any queslions, please call ihe Department ol Conslrucibn and Land Use al 684-88fi0 between 10:30 a.m. and 4:30 p.m. II new or enlarged eleclric service is to be inslalled in an exlsting buildfng, you may be subjecl to addiiional requiremenls in the Sea111'e CNy Li�ht elliciency standarde. For IuAher inlormalion, cantad Seatlle CNy Llghl al 684-4220 il lhe proJecl is noAh ol Mercer Street or 386•1600 il ihe pro�ect Is south of Mercer Slreet. Deta�ied Instmctlons: For exisling huiklings, complete (or each dwell(ng unfl as proposed afler remodeling. II Fpace healing equipment le simply being replaced, complele lor Ihe dwelling unN ae exisling. For new construclfon, complele lor each dwellinp unit as proposed. , On ihe Iine with ihe appropriate description, enler Ihe proposed desfgn square lootage lor windows, skylighls, slidinp glass doors, opaque doors, rooUceiling, wall, Iloor oJei unheated space and basement Ibor (more Ihan iwo leel below prade). Enler ifnear leet ol perfineler for slab-on-grade Iloor (less Ihan Iwo leet beiow grade). Under infiltfation, enter Ihe volume ol the inlerior heated space in cubic leet on the appropriale line based on when ihe dwelliny unit or poAion thereol was or will be buill. For giazing end doors, where U-values d(flerent Irom ihose specffied are used, enter Ihos3 U•values in Ihe 6lanks provfded for that catepory. For olher componenls, where R-values diflerent lrom Ihose specilied are used, enle� Ihal vatue and Ihe cortesponding U-value or F-value In Ihe blenks provfded In Ihat category. For ail new entries, multiply the U•value or F-value hy the 46°F. design tempeiature ditlerenca (70°F. - 24°F.) to o6tain the corre- sponding heal loss lactor and enter Ihat vaiue In Ihe heat bss laclor column. Multiply Ihe heat Ioss faclor by the componenl square leet (sq. fl.), Iinear leet (lin. ll.) or cubic leet (cu. fl.), as appropriale lo obtain Ihe cbmponenl heat loss. ; Add all enlries to obtain the total which is the Desig� Healing Load (DHL). Divide Ihe QHL by ihe healed Ibor area lo obtain Ihe load on � square loot basfs. Mufliply Desipn Healfng Load (in eilher BTUH or Walts) by 1.0 and by 1.5 to oblain minimum and maximum equipment sizes allowed. �ommercial tuildfngs have no minimum requiremems. Enler proposed equ(pmenl size (output) and verily that R is within the IimNs calculaled. ; f For pas- and oil•fired equipmenl, lhe opifonal calculation procedure may be used. Sub�rad Ihe Desipn Healir� Load (DHL) Irom Ihe propdsed oulpul s(ze. Divide Ihis figure by 5000. Then, add Ihe iesult to 7B to determine the minimum AFUE requirpd. • j OPTIONAL - NOT REQU�RED: Applicable only lo ges- end oll-ifred equipment. �or gas- and oil•fired equipmenl with lotal rated'output in one dwellfng unit o156,000 BTUH or less, Ihe maz mum allowed equipment s!ze may exceed 150% if 4he equfpment has a higher minimum AFUE as calculated h�low: ; , : i �� BTUH. ! Proposed oulput (must bo 5¢,000 BTUH or less) _� • Minlmum requlred AFUE _ �7B + � �� °utpup - ( 2¢�j0 DHL) a �l _2�_ /o AFl1E ¢ f,�E�.�l . '� 5000 BTUH � � r �4p4-ase.�u,�� i.47o A-F�- 8(-3"`�°� �F�� (��'40 ��K) o��