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; , � . <br /> Makeup Air Opening 7'able for New and Existing�welling I <br /> 7abfe 501,3.2 � <br /> One ot multiple power One or multiple fan- One atmospherically Multiple aGnospherlcally � <br /> vent,dtrect vent ap• assisted appltances and • vented gas or oil ap- vented gas or oil ap� Duct di• � <br /> plfances,or no combus- power vent or direct pliance or one solid fuel pliances or solid fuel ameter <br /> i <br /> Uon apppances vent appliances appllance appliances � <br /> Column A Column e Column C Column D ; <br /> �assiveopening 1-36 1-22 1-15 3-9 3 � <br /> Pauiveopening 37-66 23-41 16-28 30-17 4 � <br /> Passiveopening 67-109 42�66 29-46 ig-.2g 5 <br /> Passlveopening 310-163 67-100 47-69 29-42 6 <br /> Passlveo enl x64-232 101--143 70-99 43-63 7 <br /> Passlve enin 233-317 144-195 100-135 62-83 8 <br /> Passiveopening 318-419 196-258 136-179 84-110 9 <br /> w motorized dam er <br /> Passiveopening 420-539 Z59-332 180-230 ixi-142 l0 <br /> w/motwi:ed dam er � <br /> Paufveopening 540-679 333-419 231-290 143-179 11 <br /> w motorized dam er <br /> Powered makeu air >679 >41g >Z9p �l�g � <br /> Notes: <br /> A• M equivalent length of 100 feet of round smooth metal duct Is auumed.Subtract 40 feet far the exteAor hood and ten feet for each 94 dQgree elbow to <br /> detertnlne the remalning length of straight dutt aibwable. <br /> B. If dexible dud Is used,inuease the duct dtameter by one kxh.Flexlbie duct shall be stretched with minimal sags.Compressed duct shall npt be aaepted. <br /> t. Barornatrk dampnrs are prohibfted In passNe makeup alr opeMngs when any atmospherkally vented appltance 1s Instalfed. <br /> 0. Powered makeup atr shall be electrically Mterlodced with the largest exhaustrystem. <br /> ' t . <br /> Sections F � <br /> Combustion air <br /> Not requlred per mechanical code(No atmospherk or powervented appliaoces) <br /> Passhre(see IFGC Appendix E,Worksheet E•1) SiZe and type <br /> Other,desaibe; <br /> Exp/anatlon-!/no acmospheric or power vented app!lances pre/nstaped,check the approprlale box,noC requlred. !f a power vented <br /> or atmasphericaity venied appllance lnsralled,use lFGCAppendlx E,Worksheet f-1(see be/ow). Please enter slze and type. Combus- � <br /> tlon air vent supplles must communlcate with ihe applJdnce or appliances thai requlre the combusdon alr. � <br /> Sectlon F calculatlons follow on the next 2 pages. ' <br /> i <br /> � <br /> • � <br /> i <br /> � 1 <br /> F'age 4 of 6 <br />