Laserfiche WebLink
,�'_ �,,_. - <br /> EXHAUST SYSTEMS <br /> �..i�g . . ..�n� <br /> ' TABLE 501.3.1 rMi <br /> PROCEDURE TO DETERMINE MAKEUP AIR QUANTITY FOR EXHAUST EQUIPMENT IN DWELLINGS ^^ <br /> N <br /> t� ° ONE OR MULTIPLE ONE OR MULTIPLE ONE , MULTIPLE M <br /> N <br /> �;:, , POWER VENT OR FAN-ASSISTED ATMOSPHERICALLY ' ATMOSPHERICALLY � nn <br /> �, DIRECT VENT APPLIANCES AND VENTED GAS OR OIL'VENTED GAS OR OIL' N <br /> APPLIANCES OR NO POWER VENT OR APPLIANCE OR ONE APPLIANCES OR I nMi <br /> �+?� ' COMBUSTION DIRECT VENT SOLID FUEL SOLID FUEL ^^ <br /> � APPLIANCES'4 APPLIANCESB APPLIANCE° APPLIANCES° �� na <br /> N <br /> �' 1. Use the appropriate column to estimate house infiltration � M <br /> "' ��� ' �' I N <br /> �, a. pressure factor(cfm/sfl 0.1� 0.09 0.06 0.03 i N <br /> .q�:S:�- � �� M <br /> b. conditioned floor area(s fl(includin�unfinished � n"� <br /> basements) =��'=' ' " <br /> �' M <br /> I N <br /> '� Estimated house infiltration(cfm): [1a x lb] = II N <br /> M <br /> N <br /> `- =. Exhaust capacity N <br /> p,. — <br /> �^.: a. continuous exhaus[-only ventilation system I�� M <br /> ;_s (cfm): (not applicable to balanced �entilation, — � I " <br /> M <br /> '�• systems such as HRV) ' N <br /> M <br /> b. clothes dryer 1�� l�� 13� � 135 i N <br /> M <br /> c. 80%of lar�est exhaust ratinQ(cfm):(not applica- � I n"� <br /> ` N <br /> ,,. ble if recirculatintr system or if powered makeup j M <br /> '� air is electrically interlocked and matched to `- ` �J M <br /> exhaust) ' N <br /> M <br /> � � N <br /> d. 80% of next larQest exhaust ratinQ (cfm): (not ' ' N <br /> applicable if recirculatins system or if powered , I ^^ <br /> �� not applicable " <br /> makeup air is electrically interlocked and ' M <br /> ���:�� matched to exhaust) �� �� �' M <br /> �� � Total exhaust capacity(cfm): �'� �; M <br /> � [2a+2b+2c+2d] �-- � I j N <br /> M <br /> N <br /> 3. Makeup Air Requirement � "^ <br /> N <br /> M <br /> a. total exhaust capacity (from abo�e) . ... " <br /> M <br /> N <br /> b. estimated house infiitration(from above) `, 4'� N <br /> M <br /> j � N <br /> �, Makeup Air Quantity(cfm): [3a-3b] • I N <br /> (if value is neoative,no makeup air is needed) ' '"SJ ' yl! N <br /> I M <br /> �rr �. For Makeup Air Openina Sizine.refer to Table�01.3.2 � M <br /> i;: N <br /> �` Use this column if there are other than fan-assisted or atmospherically�ented eas or oil appliances or if there are no combustion app]iances. N <br /> `^; � Use this column if there is one fan-assisted appliance per ventin�system.Other than atmosphericall� �ented appliances may aiso be included. N <br /> `' � IIse[his column if there is one atmospherically vented(other than fan-assistedj�as or oil appliance per�entins s}stem or one solid fuel appliance. M <br /> �� � Use this column if there are multiple atmospherically vented aas or oil appliances usins a common�ent or if there are atmospherically vented aas or oil appliances r�n <br /> and solid fuel appliances. <br /> � N <br /> ,� <br /> �j� <br /> `�� <br /> �: �..... � A. M.. q -. <br /> i `"� �1:," { ;:,r.. ���. _ ,.�� f°•, `e� <br /> �°� t <br /> �, <br /> �`., <br /> �'. <br /> � <br /> �,y. . <br /> .s�{ <br /> �;. <br /> 2009 MINNESOTA MECHANICAL CODE 35 <br />