Laserfiche WebLink
Old Cvy54,d Ba 12cxAo� S, own o <br />Table 501.4.1 <br />Procedure to Determine Makeup Air Quantify for Exhaust Appliances in mts Zb�g <br />le <br />One or multiple One or multiple One Multiple <br />power vent or fan -assisted atmospherically appliances that are <br />direct vent appliances and vented gas or oil atmospherically . <br />appliances or no power vent or appliance or one vented gas or <br />combustion direct vent solid fuel appli bid <br />appliancesA appliances$ appliancec fuel esP <br />1. Use the Appropriate Column to Estimate House Infiltration <br />a) pressure factor 015 0.09 0.06 0.03 <br />(cfmlsf) <br />b) conditioned <br />floor area. (sf) H Ob <br />(including unfinished basements) <br />Estimated House <br />Infiltration (cfm): 1 <br />[lax lb] <br />2. Exhaust Capacity <br />a) clothes dryer 135 135 135 135 <br />b) 80% of largest <br />exhaust rating L w <br />(efin): <br />(not applicable if recirculating system or if powered makeup air is electrically interlocked and <br />matched to exhaust) <br />c) 80% of next not <br />largest exhaust applicable <br />rating (cfm): <br />(not applicable if recirculating system or if powered makeup air is electrically interlocked and <br />matched to exhaust) <br />Total Exhaust <br />Capacity (cfm): _ D <br />[2a+2b+2c] <br />3. Makeup Air Requirement <br />a) Total Exhaust <br />Capacity (from <br />above) <br />b) Estimated <br />House Infiltration_ <br />(from above) <br />Makeup Air <br />Quantity (cf n): loo <br />[3a - 3b] <br />(if value is negative,Cno�air is needed) <br />