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Heating <br />Air Canditioning <br />Relrigeration <br />Contractor's License IS <br />UNIVERI"159RF <br />Oregon License ri <br />HFA1iNG b p�R (pNWT{OMi116 , sozae <br />City of Everett Building Department <br />RE: Majestic Glove (Combustion Air) <br />To whom it may concern: <br />9/19/12 <br />Please see calculation below confirming there is sufficient combustion air for the three gas fired <br />furnaces: <br />Calculation from 2009 International Fuel Gas Code Section 304.5.1 <br />Minimum Required volume (50 cubic feet per 1000 Btu/H)= 300,000 (total Btus of furnacesj/1000= 300 <br />30Q x 50 Cubic feet=15,000 cubic feet required <br />Room volume (not including adjacent rooms, conservative number not including hallways)= <br />6948 SQFT x 14' (room height)= 97272 Cubic feet <br />97,272 cubic feet exceeds the required 15,000 cubic feet required <br />Sin r y, <br />ry a vin <br />Vice President <br />Universal Refrigeration <br />P.O. Box 614 • 4102 "B" Place N.W. • Auburn, WA 98071 <br />Seattle: (253) 839-2126 • Tacoma: (253) 922-3141 • Auburn: (253) 939-5501 • Fax: (253) 735-3432 <br />