Dehumidification Settings and Wiring with the Ecobee thermostat

By January 8, 2018

Dehumidification Settings and Wiring with the Ecobee thermostat

Bryan talks with Jesse and Nathan about setting up dehumidification for residential equipment in general as well as some of the required and recommended settings on an EcoBee thermostat

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HVAC School - For Techs, By Techs

Real training for HVAC ( Heating, Ventilation, Air Conditioning and Refrigeration) Technicians. Including recorded tech training, interviews, diagnostics and general conversations about the trade.

Chuck Allgood with Chemours joins the podcast to cover the history of refrigerants and discuss what the future might hold.

In the late 1800s, before Freon, the only refrigerants that were used were industrial chemicals like ammonia, CO2, and sulfur dioxide. DuPont stepped in to provide a better refrigerant for industrial refrigeration (which then spurred the rise of domestic refrigeration), so they created a non-toxic, non-flammable chemical called Freon-12 (CFC R-12) in 1928.

However, in the 1970s-1980s, it was discovered that R-12 and other CFCs depleted the ozone layer due to the chlorine content. R-12 production was banned in the 1990s per the Montreal Protocol. HCFCs like R-22 also have chlorine but in smaller concentrations; those phaseouts have been much more recent. Following news of the HCFC phaseout, HFCs and refrigerant blends became more popular because their ozone depletion potentials were 0.

Although HFCs don’t deplete the ozone layer, some of them have high global warming potential (GWP). Regulations stemming from the Kigali Amendment, such as the American Innovation and Manufacturing (AIM) Act, have been introduced to phase down the production of HFCs to slow global warming due to refrigerants.

HFOs have recently been developed to replace HFCs; these have olefins, which are double-carbon bonds with short atmospheric lifespans. So, they don’t contribute to global warming as significantly as HFCs and have GWPs of less than 1.

Chuck and Bryan also discuss:

What Willis Carrier really invented
Chlorine and ozone depletion
Development of refrigerant blends
Freon vs. Opteon branding
Refrigerants and the greenhouse effect
Oil lubricants
Best practices for mildly flammable refrigerants
Timeline of Opteon line refrigerant releases

Learn more about Chemours A2L training at opteon.com or Opteon’s YouTube channel. Check out what Chemours has in store at the AHR Expo at https://www.opteon.com/en/ahrexpo.

If you have an iPhone, subscribe to the podcast HERE, and if you have an Android phone, subscribe HERE.

Check out our handy calculators HERE.

Check out information on the 2022 HVACR Training Symposium at https://hvacrschool.com/symposium/.

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