Retrotec USACE - Manual (Page 316)

F22 ENERGY & PROCESS ASSESSMENT PROTOCOL
4 Perform a Multipoint Pressurization Door Fan Test
4.1 Record indoor and outdoor temperatures before and
after the test. Indoor Pre-Test Indoor Post-Test
Outdoor Pre-Test: Outdoor Post-Test:
4.2 Record wind speed and direction Average mph Direction
4.3 Record elevation of building above sea level. ft
4.4 Record 12 Bias Pressure Test Points where each test point consists of at least 10 readings taken over at
least 10 seconds. Show positive and negative signs.
Bias
Pressure
Test Points 1 2 3 4 5 6 7 8 9 10 11 12
Pa Pa Pa Pa Pa Pa Pa Pa Pa Pa Pa Pa
4.4.1 Record the magnitude of the greatest Bias Pressure Test Point.
Pa
4.4.2 Record the amount of time taken to collect each Bias Pressure Test Point.
___sec
4.5 If this value is 12 Pa or less, proceed with step 4.6. If greater than 12 Pa, repeat
step 4.3 over a longer time period.
Pressurization test. Adjust the door fan speed to establish a series of a minimum of 12 equally spaced Building
Pressure Test Points where each Test Point is an accumulation of at least 10 readings taken over a time period
that is at least double the time taken to collect Bias Pressure Test Points in 4.4.
Testing in two directions: the minimum test pressure must be at least 40 Pa and must also be at least the
absolute value of greatest Bias Pressure Test Point X 10/3 = _______ Pa. The maximum test pressure should be at
least 30 Pa greater than the minimum test pressure. A tolerance of +/– 5% is acceptable. The testing agency is required
to supply at least 90% of the estimated “passing” fl ow using 0.25 CFM/sq ft
envelope
to estimate the passing fl ow.
4.6 Record the actual Building Pressures (Pa) from one or more interior pressure monitoring station and a
minimum of four exterior pressure stations, averaged or manifolded, with corresponding Flows (L/s, cfm) for
each fan.
4.6.1 Attach to this test form the results of the pressure and fl ow readings taken during the test. Results should
be provided in tabular and graphical form. Graph should include correlation coeffi cient (r
2 ) and plotted in
log-linearized fashion. A minimum of 12 points must be provided, but the testing agency is allowed to take
additional data points to assist in data analysis and increase the accuracy of the test. There is no limit to
the number of data points taken during the test, but a minimum of 12 must reported for data analysis and
results.
4.7 Record the amount of time to be taken to collect each Building Pressure Test
Point.
sec
4.8 Record 12 Bias Pressure Test Points over the same time periods as step 4.4.