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1346.60121FGC APPENDIX E,WORKSHEET E-1. <br /> IFGC Appendix E�Worluheet E-1 <br /> Residential Combuation A�Cefa�daHon Mdhod <br /> for Fumace Boiler,�Water Heater in the Sarne S ce <br /> Step 1: CotnpbEe vented com�tian appliace intonnation: --�– <br /> Fumao�lBailer. <br /> D�aft Fiood Fan Assisted Di�ed V�1 Input:�_�LBtufir <br /> (Not fen Ass'� d Powet eM <br /> Weter Heat�: <br /> Drafl Hood �Faa Assisted _t�ed Vent Inpul:�z�eWfir <br /> NOtf�1 i Power Veni <br /> Step 2: Cela�eEa the vdume oi the Combustlon Appliance Space{CA5}oonlairtinQ combuation epp�iances. <br /> 7he CAS h�aY s connected to one anothe� cade com iant o CAS vdurue;l2 tt� <br /> Step 3: Deiempne ek CAanges per Flpur(ACH}' <br /> Default ACH vafues heve been inoorporated inlo Table E-14or use witl►Metlad�b(1WR iNelhodj.If Ihe�rear of oonshuction <br /> or ACH ie nol krwwn use method 4a Standard Mdh <br /> Sbep 1: Determina kequined Vdume tar Combostia�A�, <br /> �a. Sland�ard N{ethod <br /> To1a181uRu input o(a1 oom6us6on appliances(DO NOT COUNT 0lRECT VENT APPLU4NCES}Input��'+�BIuA�r <br /> Use Siandand MeUad oolumn in Table E-1�o find Total Required Vcluna(TRV} TRV:�75 fts <br /> II CAS Vdume{hom SEsp 2)is gn�te►fhan TfiV then no oWdoor openings are needed. <br /> IF CAS Vdume(irom Siep 2j ia ksa�hsn TRV Ihen go�O STEP 5. <br /> 4b. Known Air InflMratian Ra6e{I(AIR}Metlwd <br /> Tdel Bhdht input of�I(an-assisted and power rdtt apptiances <br /> (DO MOT COUNT DIRECT VENT APpLIANCES) InpuC BaAu <br /> Use Fan As�sted App�anoes ooh�b Table E-1 to find � 375 <br /> Requked Vdume Fen Assisted(RVFA) RVFA•�jR3 <br /> Toiel Bhdhr input d ad non�fen-assistgd epplianoes 4�pu1: Bh�lhr <br /> Use NarFan-Asstsied Rppienoes cdumn in Teble E-1 b find <br /> Required Vobme Non•Fan-ABsisted(RVNFA} RLMFA tp <br /> Totel Requlred Vdumt(TRN)=RVFA+RVNFA TRV=3375 s 33751p <br /> tF CA5 Ydun�(hom Stap 2)ia snahr Ef�an TRV then no outdoo�openings ere needed. <br /> N CAS Vdume 2 is kss nhan TRY then o�STEP S. <br /> Step 3: Ca6adabe tl►e�o of avalabke interior volume b the toles requiteed vdume. <br /> Ratio=CAS Valume 6om Ste 2)dlvlded by TRV(fr�m Step 4a or Step� RaUo a�%�'j'�' <br /> S1ep B: Celad�e Raduc�on Fac�r{RF� — — <br /> RF=1 min�Rt+�o RF=1- .36= . ��'f <br /> Sbrp 7: Cala�iabe tingip putdoor opening as ii ap comb�Gon air is irom outside. <br /> Total Btulhr input oi aA Combustion App6ences h ihe same CA5{EXCEPT DIRECT VENn Ir�put:Y� Btufir <br /> Combustion Ait Openang Ates(CAQA): <br /> Tdel Bh�t�wdrd �o an,mr er ini CA�A=y�`'�DOC BhtTh� er�_ � ir� <br /> 5fep t: Celculate N{h�at�CAOA. <br /> Mmimum CAQl1=CAOVI mWti ped b RF N[irrimum CAOA= � x��= �.�� <br /> Slsp 9: C�a�laEe Cornbusbn Aft Opening Diameter(CAOD) <br /> CAOD=1.S3 m b ihe s uare root of Minlrnum CADA CAOD=1.13 x Mirtimum CAOJ1= 3.3�in <br /> +It desired,ACH can be detenraned using ASfiRAE cak�lation or bbwer door lesf.Fdbw pocedures in Section 304. <br /> 58 <br />