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You are here: Fantech USA | Ventilation Solutions

Fantech is a part of Systemair Group
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» Corporate website
2017-07-17 12:00:00

Rn4-4 New Radon Fan

A new inline fan from Fantech is about to revolutionize the radon mitigation industry, setting new standards for owner satisfaction and application specific performance. The new Rn 4-4 and Rn 4-3 do what no other inline radon fan has done to date, which is provide whisper quiet, 24/7-hour operation at a fan speed that can be adjusted to meet the exact depressurization or air flow requirements of a given application. It’s quieter, more efficient, and easier to apply than any other sub-slab depressurization method available today.

New Coupling Design Reduces Vibration – and Homeowner Complaints

Radon fans never take a break, often creating excessive vibration and noise that lead to homeowner complaints. It’s no surprise, given the fact that for years the same rigid couplings used for intermittently operating plumbing appliances have also been used on radon fans that are designed to operate constantly. Fantech has found a better way.

The Rn4 includes the first LDVI™ (Low Durometer Vibration Isolators) couplings designed specifically to reduce vibration in radon fans. The LDVI couplings are made of a softer, more flexible (low durometer) material that reduces the transmission of vibration from the fan to the pipe, resulting in quieter system operation.

Much like the shock absorbers in a fine automobile reduce vibration and improve the passenger’s experience, the LDVI couplers reduce vibration transmission to the building components, and thus improve the experience of the building occupants,” explained Hamid Massali, engineering manager at Fantech.

Customizable Speeds Yield More Precise Application

Another distinguishing characteristic of the Rn4 is the Electronically Commutated (EC) motor. This motor includes an integral speed control potentiometer that lets installers adjust the fan speed for the specific application, thus eliminating the “trial and error” method that has led to so many fan replacements and/or oversized fans.

As any radon mitigator knows, every building’s mitigation needs are unique, depending on the density of the soil beneath the structure. This can make selecting the proper fan a very inexact process since it is difficult to know exactly how much suction pressure is required to depressurize the sub-slab and bring radon levels to a safe range.

Where the soil is compact, installations require a fan with the power to generate suction capable of exhausting radon from underneath the farthest corners of the structure’s footprint. Loose, airy soil might require a large rate of exhaust to maintain an acceptable suction pressure beneath the extents of the slab. Fantech’s model Rn4 radon fan gives the professional radon mitigator the power to generate either high suction or high flow for these more challenging radon mitigation installations,” explained Mark Wald, Central Regional Sales Manager for Fantech.

Because there are no mechanical brushes in an EC motor, energy friction losses are eliminated. This makes an EC motor run cooler, be more efficient, and last longer compared to a traditional brush motor. The EC motor technology also enhances the operating efficiency of the fan at full and partial speeds, a huge bonus for any appliance intended for 24/7 operation.

The ultimate goal for any professional radon mitigator is, of course, to reduce the amount of radon in the occupied space to a safe level. The Rn4 is the first radon fan that embodies not just what we know about fan operation, but specifically fan operation in radon-type applications. We are confident it will be s real game changer,” added Mark Wald.

Read more about Rn 4-4 and Rn 4-3