Laserfiche WebLink
. • , <br /> O/rectlons-!n order to determine the makeup aJr,Table 501.3.1 must be fllled ouc(see below). For most new Jnstallarlons,column A <br /> wl/l be approprlote,however,if atmospherlcalty vented a�pp!/ances or so/id fue!appllances are instal/ed,use the appropriafe column. <br /> For exlsting dwellings,see!MC 501.3.3. Please note,f the makeup alr quan�lty!s negailve,no addltlonal makeup a!r wlll be re- <br /> quired for veniilatlo��f tfle va/ue/s poslrive refer ta 7able 501.3.Z and slze the opening. Trpnsfe�the tfm,slze of opening and type <br /> (round,rectangular,f/ex or rlgid)!o the lasr Nne of sectlon D. The make-up a!r supply must be Installed per IMC 501.3.2.3. <br /> Table 501.3.1 <br /> PROCEDURE 70 DETERMINE MAKEUP AIR QUANITY FOR EXHAUST EQUIPMENT IN DWELLINGS <br /> Addltional combustion alr wlll be re ul�ed for combustbn a lances see KAIR method For wlculattoru <br /> One w multiple power One or multlple fan- One atmosphericallyvent Muldple atmospherical- <br /> vent or dlrect vent ap• auisted appliances and gas oroil appliance or lyvented gas or oil <br /> ppances or no combus• power vent or direct veni one sd6d fuel appllance appllances or solid fuel <br /> tlon appllances apptiances appilances <br /> Column C Column D <br /> Column A Column e <br /> 1. <br /> a�pressure factor 0.15 0.09 0.06 0.03 <br /> cfm <br /> b)condittonad floor area(sfl(including )a <br /> unflNshed basements �� �'�! <br /> Estirtwted House Inflltratlon(cfm):(la <br /> x 1b �� <br /> 2.Euhaust Capadry <br /> a)continuous exhaust-only ventlladon <br /> system(cfm);(not spplleable to ba- � <br /> lancad vendladon systems such as <br /> HRV <br /> b)clothes dryer(cfm) 135 135 135 135 <br /> c)80%of largest efchaust rating(dm); <br /> Kriehen frood typically /,� �(� <br /> (not applkable If redreulating system "/ <br /> or if povrered makeup elr is electrically <br /> fnteHocked and match to exhaust <br /> d)80%of next la�gest exh2ust rating <br /> (cfm); bath fan typkaUy Not <br /> (not appiicable if recirculating system Applfcable � <br /> or If powered makeup atr is electrlcally <br /> interlodced and matehed to exhaust � <br /> Total Exheust Capaciry(dm}; /"�� ! <br /> 2a+2b+2c+2 d � <br /> 3.Makeup Air Quant(ty(dm) � <br /> a)total exhaust apacity lfrom above) �, r <br /> b)estimated house Inflltratlo�(from <br /> eo�e, . 6 <br /> Makeup Atr QueMity(cfm); / <br /> �3a-3b) � Z�(�..b " <br /> (If value!s ne8ative,no makeup alr Is � <br /> needed <br /> 4.for makeup Alr•Opening Sizing,refer <br /> !o Table 501.4.2 <br /> A. tJse this column if there are other than fan-essisted or atmospherically vented gas or oil appllance or if there are ra combustlon appllantes.(Power vent , <br /> and direct vent appliances may be used.) <br /> B. Use thk column if there Is one fanassisted appllance pervenUng system.(Appllances other than atmospherkallyvented appllances may also ba In- <br /> tluded.) <br /> C. Use this mlumn if the►e k one atmospherkally vented(othar than fan-dsskted)gas or o8 appAance per veMing system or one solid fuel appliance. <br /> D. Use thls cotumn If there are multiple atmospherlcally vented gas or oil appliances using a common vent or If there are atmospheMcallyvented gas or oil <br /> appllances and soAd tuel applienees. <br /> , <br /> � <br /> � <br /> Page 3 of 6 <br />