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,PASSIVE MAKE UP AIR OPENING SCHEDULE <br /> Diameter '. Path 2 <br /> TABLE FOR SIZING".PASSIVE IVIAKE I AIR OPENINGS Path 0 ; Path 1 , <br /> Notes a) This table assumes 20 feet of smooth unobstructed round 3 inches, 50 cfm.::.,.:, 35!cfin I5"cfin <br /> duct with three 90°elbowsand a screened hood 4 inches 90 cfm 60fn30 cfai <br /> `:b) Equivalent'designs calculated using pressures of 50 Pascals S inches" 140 cfm _7700 cfm 45 cfin <br /> for Path 0,, 25 Pascals for Path.1, and 5 Pascals forPath 2 6 inches 200 cfm 140 cfin , 65 cfm'" <br /> may be used " 7 inches 270 cfm 190 cfm.: 85 cfiri .. <br /> C)" If:a make-up air opening is iised with no duct or elbows,the 8 inches 350 cfm 250 cfm . 110 cfrn <br /> diameter'can be decreased by:l inch. 9 inches 450 cfrn 320 cfm ;140 cfm F <br /> d) ; I:flex duct is used,increase diameter by 1 inch.`" 10 inches 57.0 cfin 400 cfin 180 cfm <br /> Make-up Air Application/Location CFM Opening size Duct Type <br /> ❑ Smooth Q Flex ❑ Opening only <br /> Cl Smooth ❑Flex ❑Opening only <br /> ❑ Smooth ❑Flex ❑ Opening only <br /> ❑ Smooth ❑Flex ❑ Opening only <br /> AGGREGATE MAKE-UP AIR WORKSHEET <br /> INSTRUCTIONS <br /> Step 1. Complete Exhaust Schedule on the right indicating cfin of largest device in each category. EXHAUST SCHEDULE <br /> Step 2. Complete the Combustion Equipment Schedule on preceding page. DEVICE = CFM- <br /> Step 3. Choose a path with a Y(Yes)for all selected equipment. Clothes dryer b <br /> Step 4. .Complete Aggregate Make-up Air table below for chosen path.Using the total cfm from the Kitchea exhaust <br /> Exhaust Schedule,indicate flow in cfm for proposed method(s)of providing make-up air. Other"exhaust <br /> Step 5. Fill out the Passive Make-up Air Opening Schedule above. TOTAL;; 160 <br /> E3 Path 0 — Aggregate Make-up Air Method Passive Passive Powered n: <br /> Infiltration Opening ! " Make up <br /> Passive infiltration for up to 425 cfm <br /> Passive openings for.cfffis over 425 <br /> Powered to match flow for cfrns over 985 " <br /> Path 1 — Aggregate Make-up Air Method Passive Passive Powered <br /> Infiltration Opening* Make up <br /> Passive infiltration up to 175 cfm* <br /> Passive openings for cfms over 175 `5c� <br /> Powered to match flow for cfms over 565 - <br /> * If a closed controlled solid fuel burning appliance is installed in Path 1,then a passive opening must be".installed to provide make-up =y <br /> air for the clothes dryer and for any central vacuum that exhausts to the outside. ' <br /> ❑ Path 2 — Aggregate Make-up Air Method Passive Passive Powered <br /> Infiltration Opening Make-'up <br /> Passive openings for up to 175 cfm <br /> Powered to match flow for cfms over 175 N/A <br /> ❑ Path 3 — Aggregate Make-up Air Method Passive PassivePowered <br /> Infiltration Opening Make-up <br /> Powered to match flow N/A N/A <br /> 16 <br />