HomeMy WebLinkAboutBlower Door TestI ILAff Retrotec rCloud
Quality Assurance Report
Single Direction Multi Point Blower Door Test
PASS Your Result: 2.74 ACH50 (364.15 CFM50 * 60 / 7965 ft3)
Target <= 3 ACH50
Test Information
Test Name 411 County Road 237
Test Date 2024-12-30 09:23 AM (PST)
Export id LNBONXBX
Company Name Dexter Diagnostics
Technician Name Amanda Poindexter
Technician Email dexterdiagnostics@gmail.com
Building Information
Address
411 County Road 237
City
Silt
State
CO
Zip/postal Code
81652
Country
United States
Year Constructed
2024
Elevation
5748 ft
Address Verified?
Yes
Building Latitude, Longitude
39.569743,-107.677095
GPS validation
Tester location not verified
Estimated Distance From Address
Not available
Test Equipment
Fan Model Retrotec 5000
Fan Serial Number 5FN105365
Pressure Gauge Model Retrotec DM32X
Gauge Serial Number 502769
Environmental Conditions
Pre -test Indoor Temperature 60 OF
Pre -test Outdoor Temperature 29 OF
Wind Speed 4 MPH
Average Barometric Pressure 101.6 kPa
Test Dimensions
Conditioned Floor Area 885 ft2
Envelope Area 2841 ft2
Volume 7965 ft3
f Retrotec rCloud
Test Results Summary
Test Type
Single Direction Multi Point Blower Door Test
Flow Reference Pressure
50 Pa
Time Averaging
10 seconds
Corrected Flow
364.15 CFM @ 50 Pa
Air Changes Per Hour
2.743
Percent Uncertainty
4.1 %
Correlation, r
0.994
Intercept
17.418
Slope, n
0.777
Test Results
Test Data Set 1
Flow Direction
Depressurize
Gauge Location
Inside
Baseline, initial (Pa)
-0.08 -0.08 -0.11
-0.14 -0.14 -0.14 -0.16 -0.17 -0.2 -0.24
Baseline Duration
10 seconds
Average baseline
-0.15 Pa
Measured Pressure (Pa) -15.1 -22.62 -29.94 -37.56
Fan Pressure [5000 - B1] (Pa) 111.84
Fan Pressure [5000 - B2] (Pa) 58.14 83.85 110.49
Fan Pressure [5000 - B4] (Pa)
Flow (CFM) 152.76 206.11 250.42 292.59
Measured Pressure (Pa) -44.67 -52.34 -59.57
Fan Pressure [5000 - B1] (Pa)
Fan Pressure [5000 - B2] (Pa) 138.39
Fan Pressure [5000 - B4] (Pa) 43.51 50.6
Flow (CFM) 332.86 407.95 438.66
Baseline, final (Pa)
-0.29 -0.34 -0.37 -0.4 -0.45 -0.51 -0.57 -0.58 -0.57 -0.42
Baseline Duration 10 seconds
Average baseline -0.45 Pa
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Test Notes
No notes entered.
Flow Equation Parameters - Retrotec Calibrated Flow Parameters
Retrotec rCloud
Fan Last Calibrated: 2024-09-11
Fan Model Retrotec 5000
Fan Serial Number 5FN105365
Fan Last Calibrated: 2024-09-11
Units Used For Flow Parameters in Equation CFM
Fan pressure (FP) is the measured fan pressure when using a self -referenced fan or when the room pressure is
negative. If using a fan which is not self -referenced, and the room pressure is positive, fan pressure is calculated
by subtracting the measured room pressure from the absolute value of the fan pressure.
If PrA is greater than 0 or fan is self -referencing: FP = jPrBj - PrA
If PrA is less than 0 or fan is self -referencing: FP = PrB
Flow calculations are not valid if fan pressure is less than either MF or (K2 x IRPI)
Fr = ran pressure, Kr = room pressure
Range
N
K K1
K2
K3
K4
MF
Open
0.4990
555.2054 0.0000
0.3000
0.0000
1
10
A
0.5030
290.8751 0.0000
0.4000
0.0000
1
20
B8
0.5270
121.5413 0.0000
0.7000
0.0000
1
35
flow =
(FP - RP x K1 )n
x (K + K3 x FP) x K4
Range
A
B
C
D
F
G
K2
MF
B4
0.0000176573
-0.01530302
6.2742
138.42
0.59
50
0.8000
40
B2
0.0000025309
-0.00466154
2.7545
25.71
0.92
50
1.0000
50
B 1
0.0000027369
-0.00313712
1.4891
10.71
0.45
50
1.0000
60
B74
0.0000007960
-0.00095010
0.5900
18.00
0.15
25
0.8000
35
B47
0.0000002690
-0.00035905
0.2435
12.05
0.09
25
1.0000
50
B29
0.0000001110
-0.00014900
0.0920
4.40
-0.02
25
0.6000
50
flow = (A x
FP3) + (B x FP2)
+ (C x FP) + D
+((G - RP) x
F)