Jack Duffy
-
September 13, 2017
Fan Pressure (flow pressure) is too low for the Range, which means you should change to a smaller more restrictive Range to increase fan pressure.
-
September 13, 2017
Click the "Reset to Standard Default" button in the Advanced settings menu, to ensure default program parameters are used.
-
September 13, 2017
This problem is often caused by anti-virus programs. In particular we have found that using Internet Explorer and a virus protection program from Microsoft called 'Windows Smartscreen'.
Disable your anti-virus program, uninstall the earlier version and download and install the new version from the website:
-
September 13, 2017
The L ranges on the fan are designed to be left open unless you are using L2 or L1.
Covering those four 1 inch holes in the center of the C8 plate will cause range C1 to read about 25% higher and C2 to read about 12% higher flow.
-
September 13, 2017
One question we get a lot is about leaking flex duct that connects the ducTester to the return. We have tested the most ripped up flex available in our warehouse; it had way bigger pinholes and it measured 0.68 CFM at 25 Pa. When you measure a typical leakage of 100 CFM at 25 Pa or more, this is not even 1%. So we believe it is not worth spending money on replacing.
-
September 13, 2017
Yes. The LEED standard references test procedures from the ASTM E779-10 standard, so we have included the "LEED Permeability" result (in units of in2/100 ft2) in the user interface of the ASTM standard.
In other words:
- Download FanTestic, if you haven't already
- Go to Choose Tools-->Options section of the software, and select the standard "ASTM E-779-10"
- Click File--> New Test
- Perform your Door Fan test, and once you have all your data, and it will calculate a "LEED Permeability" result for you at the bottom of your test set.
-
September 13, 2017
Uninstalling FanTestic will NOT remove any of your test files or reports, it will only uninstall the program files.
It is generally a good practice to regularly back your test and report data to a different location.
Uninstalling FanTestic will also NOT uninstall the DM-2 USB driver. You should still be able to see it listed as installed in your Control Panel after you restart the computer.
-
September 13, 2017
You need to consider that there is a fundamental issue of uncertainty with using 4 Pa as a reference pressure. Just imagine, if there is even a 1 Pa fluctuation, due to so many possible sources that can cause pressure fluctuations as you know, the pressure measurement already has an uncertainty of +/- 25% error. Consider that for almost all airtightness testing standards across the world, the reference pressure for Flow results are either 50 Pa or 75 Pa.
-
September 13, 2017Answer:
If this is the Error you are seeing:
Click on the "Details" button to get more information. In the summary, you will see:
ERROR SUMMARY: "+ Your Web browser settings do not allow you to run signed applications."
This error summary indicates that there are security settings in your web browser that are preventing the application from being able to download.
Some people have had success by adding http://retrotec.com to their "Trusted Sites" in the Tools>>Internet Options>>Security settings
-
September 13, 2017
How and when should I compensate for leakage around the door panel?
Modular Panels are designed to be placed into doors that are not well sealed. The panel leakage for the Modular Panel is about 14 square inches compared to about 3 square inches for the Aluminum Frame and Cloth and around 1 square inch of leakage for the upgraded Aluminum Frame with snap together corners. These three panels represent three typical doorways:
- Poorly weather-stripped which would have an approximate 1/16 inch gap which equals about 14 square inches leakage;
- A well weather-stripped and adjusted door would be around 3 square inches or leakage;
- A super tight door could be as tight as 1 square inch of leakage and can even have less.
One rule of thumb is that all standards
