Laserfiche WebLink
� <br /> � PASSIVE MAKE-UP AIR OPEl�1ING SCHEDULE <br /> ' TABLE FOR SIZINGPASSIVE 1�'IAKE-UP AIR OPEti'IPiGS ' Diameter : Path 0 Path 1 Path 2 ' <br /> Nates a) This table assumes 24 feet of smooth unobstructed round 3 inches 50 cfm 35 cfrn 15 cfrn : <br /> duct with three 90°elbows and a screened hood 4 inches 90 cfm 60 cfrn 30 cfm'.-- <br /> b) Equivalent designs caiculated using pressures of�d Pascals 5 inches 140 cfrn 100 cfm 45 cfm' <br /> for Path 0, 2�Pascals for Path 1, and 5 Pascals for Path2; 6 inches 200 cfrn 140 cfrn 65 cfrn <br /> may be used. 7 inches 270 cfrn I90 cfm 85 cfm _ <br /> c) If a make-up air opening is used�vith no duct or elbows,the 8 inches 3�0 cfin 2�0 cfm 110 cfrn <br /> ' diameter can be decreased by 1 inch. 9 inches 450 cfrn 320 cfm 140 cfm <br /> d) If flex duct is used,increase diameter by 1 inch. 10 umches 570 cfrn 400 cfm 180 cfm , <br /> �•iake-up AirApplication/Location CF1�1 Openin?size Duct Type <br /> ❑ Smooth ❑ Flex ❑ Openin�only <br /> ❑ Smooth ❑ Flex ❑ Opening only <br /> ❑ Smooth ❑ Flex ❑ Opening only <br /> ❑ Smooth ❑ Flex ❑ Openin?only <br /> AGGREGATE MAKE-UP AIR WORKSHEET <br /> INSTRUCTIONS � <br /> Step l. Complete EChatrst Schedule on the ri�ht indicating cfm of largest device in each category. EXHAUST SCHEDULE <br /> Step 2. Complete the Combustion Equipment Schedule on preceding paQe. DEVICE CFyI <br /> Step 3. Choose a path with a Y(Yes)for all selected equipment. Clothes dryer-< <br /> Step 4. ,Complete Aggregate Make-a�p Air table below for chosen path.Usinj the total cfm from the Kitchen exhaust <br /> Exhaust Scheclule,indicate flow in cfm for proposed method(s)of providing make-up air. Other e:�haust <br /> Step 5. Fill out the Passive�Liake-up Air Opening Schedule above. -TOTAL <br /> ❑ Path 0 — Aggregate Make-up Air Method Passi�e Pa�si�e Po�vered <br /> Inf ltration Openin� ' 14iake-up <br /> Passive infiltration for up to 42�cfm <br /> Passi�e openings for cfms over 42� <br /> Powered to match flow for cfms over 985 <br /> ❑ Path 1 — Ag�l'ebate Make-UP AlI' 1�et�lOC1 Passive Passive ' Powered <br /> Infiltration Opening* Make-up . <br /> Passive infiltrarion up to 175 cfrn* <br /> Passive openings for cfms over 17� ' <br /> Po�ti�ered to match flow for cfms over 565 <br /> * If a closed controlled solid-fuel buming appliance is installed in Path 1,then a passive openin�must be installed to provide make-up <br /> air for the cIothes dryer and for any central vacuum that e:chausts to the outside. <br /> ❑ Path 2 — Aggregate Make-up Air Method passi��e p�si�e Po��erea <br /> Inf'�Itration Opening' Make-up <br /> Passive openings for up to 175 cfm <br /> Powered to match flo�v for cfms over 17� N/A <br /> ❑ Path 3 — Aggregate Make-up Air Method Passive Passive - Powered <br /> Infiltration OpeninQ Make-up <br /> Po�vered to match flow N!A N/A <br /> 16 <br />