KTA Fan Systems

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What's So Special About the KTA System?

The KTA system was originally developed in 1989 when the EPA’s first set of radon contractor mitigation guidelines were introduced. The basic KTA system uses a power supply for the fan that falls within the parameters of article 725 of the National Electric Code. (NEC).

Several mitigators contacted the EPA regarding difficulties they were having in scheduling electricians to hard wire their systems. Not only did this increase the cost of installations, compared to installers who were not following the new guidelines and building codes, but also impacted the response time to their real estate clients.

Article 725 of the NEC deals with Class 2 power limiting circuits of less than 50 volts. The KTA power supply has an output of 24 volts. Most code jurisdictions do not require a permit due to the safety aspects of Class 2 low voltage. However, this should always be verified within each jurisdictional area. The KTA fan is a Fantech FR-150, which has been modified to run at its normal speed with 24 volt input. This is accomplished by the use of a transformer located within the eye of the fan. Because of this, the performance of the KTA fan is similar to the Fantech FR-150 fan and carries the same Fantech warranty.

The development of an electronic system performance indicator into the power supply panel was made due to problems mitigators were experiencing with manometer style indicators. The KTA face has a very convenient and easy-to-read indicator, which senses the current draw of the fan. As the airflow of the system changes, due either to a breach or obstruction in the piping system, the indicator shows that a problem has occurred. Each system has an adjustment customizing the setting indicator to the airflow of that particular system. This improvement has simplified installation of the system by eliminating the need for manometers, pressure switches and pneumatic tubing.

The experience of mitigators, who now use nothing else, shows that the KTA system pays for itself. The time saved on the job, the cost of hiring an electrician, obtaining a permit, and the hassle factor of scheduling another tradesman and inspection are issues left to other systems. The KTA system also has significantly decreased the callbacks on exterior systems such as drain-tile depressurization. We suggest that you do your own cost comparison , as many other mitigators have done, to confirm the cost-effectiveness of this superior system. We know the system sells itself!