2005-P09251 - new structure - Laserfiche WebLink

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PASSIVE MAKE-UP AIR QPENING 5CHEDULE TABLE FOR SIZING PASSIVE MAKE-UP AIR OPENINGS Dlatneter Path 0 Path I Path 2 Nt�tes: a) 'I'his table assumes 20 feet of smooth unobstructed round 3 inches 50 cfm 35 efm I S efm duct with three 90°elbows and a screened hood 4 inehes 90 cfm 60 cfm 30 efm b} Equivalent designs calculated usin�pressures of 50 Pasc�ls 5 inches 140 cfm 1�0 cfm 45 cfm for Yath 0, 25 Paseals for Path 1, and 5 Paseals for Path 2 6 inches 200 cfm 140 cfm 65 cfm may be used. 7 inches 270 cfm 190 cfm 85 cfm c) If a make-up air opening is used�vith no duct or elbows,the 8 inches 3�0 cfm 250 cfm 110 cfm D�ameter can be decreased by 1 inch. 9 inches 450 cfm 320 cfm 140 efm d) If flex duct is used, inerease diameter b� 1 inch. 10 inches 570 cfm 400 cfm 1 SO cfm Make-u Air A lication/Location CFM O enin size Duct�t�v e ❑ Smouth ❑ l�lcz ❑ O enin�onlv ❑ Smooth ❑ Flcz ❑O enin�onl�� ❑ Smooth ❑ Flex ❑O enin�onlv ❑ Smooth ❑ Flca ❑ O enin�onl � AGGREGATE MAKE-UP AIR WORKSHEET INSTRUC'IIONS Step l. Complete E;xhausl Schedule on the right indicating cfm of largest device in each category. EXHAUST SCHEDULE Step 2. Complete the('ombustion Equipment Schedule on preceding page. DEVICE CFM Step 3. Choose a path with a Y(Yes)for all sel�,cted equipment. Clo h� ' t es drver Step 4. Complete,�ggregate,ti�ake-up Air table below for chosen path. Using the total cfm from the Kitchen exhaust I�.xhaus�Sched:ile,indicate tlow in cfm for proposed method(s)of providing make-up air. Other exhaust Step 5. Fill out the Passive tifake-t�p Air Opening Schedzrle above. TOTAI, ❑ Path 0 — Aggregate Make-U� Alt' MethOd Passive Passive Powered Make-up (nfiltration O enin Passive infiltration for up to 425 cfm Passive openings far cfms over 425 Powered to match flow for cfms over 985 ❑ Path 1 —Aggl'egate Make-up AiI' MethOd Passive Passive Powered Make-up Intittration O enin * Passive intiltration up to US cfm* � Passive openings for cfms over 175 Powered to match flow tor cfms over 56� � * [f a closed controlled solid-fuel burning appliance is installed in Path 1,then a passive opening must be installed to provide make-up air t�ir the clothes dryer and for any central vacuum that exhausts to the outside. ❑ Patfl 2 — E�ggi'egate Make-U� f�ll' Met�lOC� Passive Passive Po�vcred fnf3ltration Q nin Make-u Passive opcnings for up to 175 cfm Powered to match flo�v for cfms over 175 N/n ❑ Path 3 — Aggt'egate Make-Up Ai1' MethOd Passive Passive Pow�ered [nfiltration O enin Makc-u Powered to match flow �;;n �;;A l�