Jack Duffy

  1. When should I care about leakage around the door panel?

    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: 

    1. Poorly weather-stripped which would have an approximate 1/16 inch gap which equals about 14 square inches leakage;  
    2. A well weather-stripped and adjusted door would be around 3 square inches or leakage; 
    3. A super tight door could be as tight as 1 square inch of leakage and can even have less.

    One rule of thumb is t

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  2. Can I print my test results from rCloud in order to show my local officials?

    Yes you can print your results via the rCloud portal. Just login to the rCloud web portal, find your report and you can save your report as a PDF to be printed.

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  3. What gauges does rCloud work with?

    rCloud works with a WiFi enabled DM32 gauge only.

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  4. When I try to install FanTestic or Integrity, I get the error "Cannot Start Application" and it says "Cannot continue. The application is improperly formatted. Contact the application vendor for assistance."

    Answer

    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>>Securi

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  5. What is the flow range (in units of CFM) for the 5000/6000 fan's range configurations?

    500 Flow Chart

    6000 flowchart

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  6. Who should perform the Clean Agent Enclosure Integrity test?

    Currently none of the standards require independent or 3rd party testing.  Much of this responsibility is given to the AHJ who is supposed to ensure all codes are followed. The reality is few AHJ completely understand the standards and are easily persuaded by the installer that everything has been done correctly. Increasingly the role of ensuring the building is up to spec has been taken on by commissioning agents. Their job is to ensure that the entire building is up to spec and that includes the suppression system. The commissioning agent is hired by the owner to ensure the owner is getting what they paid for, which includes compliance with all building and NFPA codes.

    We often get questions from AHJ or commissioning agents who are concerned about how the enclosure test was performed, and there is good reason for this. Half the enclosure integrity tests done in Europe and 60% of those performed in the US do NOT include a peak pressure evaluation. Peak pressure evaluat

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  7. Why does my gauge show two dashes “—“?

    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.
     

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  8. What are the manufacturer's recommendations for equipment calibration?

    Our manufacturer's recommendation for calibration is as follows:

    • Retrotec fans: Every 5 years.  
    • DM-2 Mamometer: Every 2 years  or if the Mamometer fails a field check. 
    • DM32 / DM32 WiFi Mamometer: Every 5 years or if the Mamometer fails a field check.

    Please review the DM32 and DM-2 Manuals on how to perform a field check.  

    This only covers our manufacturer recommendation.  The energy standards (EN13829, ASTM, ATTMA, USACE, etc...) that you are using for test results may have different calibration intervals.  Please consult the energy standards for the specifc equipment calibration intervals.

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  9. How can I improve uncertainty of test results?

    Click the "Reset to Standard Default" button in the Advanced settings menu, to ensure default program parameters are used.

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  10. Why does FanTestic default to taking 10 or more readings when the Standard only requires 5?

    Retrotec recommends you take the maximum number of test points to decrease the uncertainty in your test.

    Yes, you can change this default and take only 5 readings according to the Standard but your uncertainty will often be too high and you might have to retest.  Next, you might retest and find the result differs from the previous test by 10% or more making you lose confidence in the results. Retrotec defaults that include taking 10 test points and longer baselines will optimize your tests and give better results. 

    You might save a few minutes by testing to the minimum allowed by the Standards but in the long run, your test results will be poor. Officials look at high uncertainties and poor repeatabilities between your tests and wrongly conclude your equipment is faulty but the truth is that your test method is faulty.  Please use our defaults as practical minimums and if anything take your tests over a longer time rather than shorter and your results

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