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DUCT LEAKAGE TEST <br /> Building Knowiedge, Inc. <br /> PO Box 1376 <br /> Burnsville, MN 55337 <br /> Phone: 952-944-5605 <br /> Date of Test: 8/8/16 Technician: Pat O'Malley <br /> Test File: 4220 Chippewa Lane_Duct Test_08AUGUSTI6 <br /> Customer: Metro Air Building Address: 4220 Chippewa Lane <br /> 16980 Welcome Avenue SE Orono, MN 55359 <br /> Prior Lake, MN 55372 <br /> Phone: 952-447-8124 <br /> Fax: <br /> Test Results <br /> 1. Measured Duct Leakage: 82.0 CFM/15.5 sq. in. (+/-0.0%) <br /> 2. Duct Leakage as a Percent of System Airflow: 10.3% <br /> 3. Duct Leakage as a Percent of Buiiding Floor Area: 3.9% <br /> 4. Leakage Split: Supply Side: 61.5 CFM / 11.6 sq. in. <br /> Return Side: 20.5 CFM /3.9 sq. in. <br /> 5. Duct Leakage Curve: Flow Coefficient(C): 11.9 <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: 45.4% <br /> Building and System Parameters: <br /> Floor Area: 2079 sq.ft. Average Supply Operating Pressure: 373 Pa <br /> System Airflow: 800 CFM Average Return Operating Pressure: 373 Pa <br /> Supply Leakage Split: 75% Supply Leakage Penalty: 1.0 <br /> Return Leakage Split: 25% Return Leakage Penalty: 0.5 <br /> Percentage of Measured Leakage Connected to Outside: 100%(82.0 CFM) <br />