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DUCT LEAKAGE TEST <br /> Building Knowledge, Inc. <br /> PO Box 1376 <br /> Burnsville, MN 55337 <br /> Phone: 952-944-5605 <br /> Date of Test:4/18/18 Technician: Pat O'Malley <br /> Test File: 1920 Fagerness Point Road_Duct Test_18APRIL18 <br /> Customer: West Metro Mechanical Building Address: 1920 Eagerness Point Road <br /> 220 N Franklin Street Orono, MN <br /> Norwood Young America, MN <br /> Phone: 952-215-8174 <br /> Fax: <br /> Test Results <br /> 1. Measured Duct Leakage: 29.0 CFM /5.5 sq. in. (+/-0.0%) <br /> 2. Duct Leakage as a Percent of System Airflow: 7.2% <br /> 3. Duct Leakage as a Percent of Building Floor Area: 2.8% <br /> 4. Leakage Split: Supply Side: 14.5 CFM /2.7 sq. in. <br /> Return Side: 14.5 CFM/2.7 sq. in. <br /> 5. Duct Leakage Curve: Flow Coefficient (C): 4.2 <br /> Exponent (n): 0.600(Assumed) <br /> 6 Test Settings: Test Mode: Depressurization <br /> Test Pressure: 25.0 Pa <br /> Equipment: Series B Minneapolis Duct Blaster <br /> Test Type: Total Leakage <br /> (Duct Blaster Only) <br /> Estimated Efficiency Loss from Duct Leakage: <br /> 1. Annual System Efficiency Loss: 27.5% <br /> Building and System Parameters: <br /> Floor Area: 1025 sq.ft. Average Supply Operating Pressure: 373 Pa <br /> System Airflow: 400 CFM Average Return Operating Pressure: 373 Pa <br /> Supply Leakage Split: 50% Supply Leakage Penalty: 1.0 <br /> Return Leakage Split: 50% Return Leakage Penalty: 0.5 <br /> Percentage of Measured Leakage Connected to Outside: 100%(29.0 CFM) <br /> 41( <br /> D <br />