Monthly Archives: September 2017
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I have a Energy or Enclosure Integrity Test to perform. How many fans do I need to properly run the test? Do I have enough fans to run the test?
We have created two tools to help you figure out how many fans you will need for your test.
Next, open the file in excel and "Enable Editing" when a security warning appears.
Fill in all the fields highlighted in blue. The number of fan results are highlighted in green.
Here is what the Blower Door Number of Fans Calculator looks like:
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 t
rCloud works with a WiFi enabled DM32 gauge only.
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
500 Flow Chart
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
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.
Our manufacturer's recommendation for calibration is as follows:
- Retrotec fans: Every 5 years.
- DM-2 Manometer: Every 2 years or if the Manometer fails a field check.
- DM32 / DM32 WiFi Manometer: Every 5 years or if the Manometer 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.