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2012 International��chanical Cacfc <br /> �. �;xhazlst dticts in sy�tecns which are designed to Testin,��nd Ratin�Prot;etiure,HVi 9I6,I-iVI AirE�o�v <br /> aperate interznit�entiy shatl be ec�uippec��vith bacl�- Test Proceclure,ancl HVI 920,HVI Product <br /> dr�ft clampers. Performance Certi�ication Pracedure). � <br /> 5. A11 exh�tust d���ts ir�tinct�nditioned spaces shall be ��c�p�ian: 4Vhere a range hoac�or cio�vza draft _ <br /> insuiated to��ninimum of R-4. exha�ist f�r�is used for lacal exhaust for a kitche�,the <br /> 6, Terininai outlet elements sh�tl have at least the device is nofi required ta be rated per these standards. <br /> ec�uivalenfi net free�re�Qf the dcxctwark, 2, [ns�allatit�n of the system ot-eqt�ipment sh�ll be <br /> ?. Tertninai outlet eiertxents shail be screenecl or carriecl aut in acco�-dance�vith rn�nufacturers' <br /> otherwise protected as required by Sectian 501.3?. inst�llatioiz ins#r��ctit�ns. . <br /> 8� Exha�ist f�ns in separate c�tvailing units ar sleepin; 3. �'an�irfla�,v rating ancl t�uct system shall�e clesigned <br /> units shall not share cozlunon exhaust d�tcts unless the ancl irtstalied tt�deliver at le�sC the e:�lzt�ust airfio�v <br /> systein is engineered for this ap�ration. required by Tabi�4Q33. The aizflo�vs requireci z-efer <br /> 9. �Vhere permzttecl by Chapt�r 5,multiple 1ocal exh�ast fio the delivered air�lo�v o�the systecn as ins#�ltet�anc� <br /> d�icts may be catnbinecl.If m4re than one.of the t�s�eci��sing a�lotiv hoocl,flotiv 5rid, or other�irflo��� <br /> e�aust fans in a ct�vellin�unit or sleepang Etnrfi sh�res me�€surement device. <br /> a cgmznan exhaust d�zct th�n each exhaust f�n shall 6e �:�ceptian�: <br /> ec��upped�vith a back-�Iraft damper tc�pt•event t��� - �. t�n exhaust airflow rating at a pz�essG�re of 0.25 i��. <br /> recirct��ation af exh��tst air from otie roc�in to another w.�. �nay b�used,pravidecl the duct sizing meets <br /> roatn vi�the ex�inust t�uctin5 syste�n. tlle p��escriptive rec�c�i��ements of'E'able 4{l3.&.�.2. <br /> �. t�tl�ere�ran�e hood or do�vn draft��hanst fan is <br /> 4�3.�.4.2 �,oc�l��h�tast f�ns. E�aust fan cotistr�lction and ��sed to satisfy the Iocai ventii�tiotz rec�uirements <br /> sizin�shalt meet ktle foliativirig criteria. fo�•kttchens,the range hooct oz�d4Gvrz d�-�ft ext�aust <br /> 1. �:�I3a��st fans shall be tested and rated u�accarcla�ce shail not be less th�n 100�fir�at 0.10 in.�v.g. <br /> cvitEx the airfit�w and sound rating procedures afthe <br /> Horne Ventilating lnstitute�H�I 915,HVI Loudness <br /> �A�L���3.�,�.� � <br /> �'F2E���i�`�[V� ��h9�t1�T'C3t1�1"�i�f�� <br /> iUlinimum I�a�irn�atrt I�inimum IVlaximum <br /> �ast 1"esfied cf�t at Flsx L�ngfih �mooth Length Nlaxirnum <br /> 0.25 inche�w.g. L7iamet�r in Pee� Diame#er in Feet Elbows <br /> SQ �inches 25 4 inches 70 3 <br /> SO �inchzs 9(} 5 inches [�}0 3 <br /> SQ 6 inches No Limit b incl�es No Limit 3 <br /> 80 �inches' NA �4 inches �0 3 <br /> 80 5 inches l5 S inches t00 3 <br /> 8Q 6 inches 90 6 inches No Limit 3 <br /> l00 5 inchzs' Nf1 5 inchzs SQ 3 <br /> 14Q , 6 inches �5 6 inches i�a Limit 3 <br /> l25 6 inches IS 6 inehes I�T+a Limii 3 <br /> 12� ?inchas 7� 7 inches No Limit 3 <br /> 1' For each additir�nal el6o4v,subtract 1Q feet tzc�m iength. <br /> '' FIeY dacts afthis dilmeter are nat permitted�vith fans of this size. <br /> [ <br /> {Inser�as Page 37b} <br /> �ffecfive Juiy 1,2013 <br />