HVAC Evacuation Myths for Installers to Fix System Failures with Torque Tools – David Rames Part 2

In this episode of the HVAC Know It All Podcast, host Gary McCreadie continues his conversation with David Rames, Senior Product Manager at Midea America. In Part 2, David talks about the importance of pressure testing and evacuating each line set in multi-zone ductless systems. He emphasizes using a torque wrench to avoid over-tightening flare nuts, which can cause leaks. David also explains the dry mode feature in Midea systems, designed to control humidity effectively. The episode wraps up with advice on proper installation, maintenance, and the value of training to ensure quality work and satisfied customers.

David Rames discusses the importance of pressure testing and evacuating each line set in multi-zone ductless systems. He explains how using a torque wrench can prevent over-tightening flare nuts, which can cause refrigerant leaks. David also highlights the dry mode feature in Midea systems, which helps manage humidity by slowing down the fan and cooling the room. The episode wraps up with advice on proper installation, leak testing, and the need for thorough training to ensure quality installs and satisfied customers.

Throughout this episode, David talks about the steps to ensure a proper installation in multi-zone ductless systems. He explains the importance of pressure testing and evacuating each line set separately to avoid leaks. David also discusses the need for using a torque wrench to avoid over-tightening flare nuts. He highlights the dry mode feature in Midea systems, which helps control humidity. Lastly, he shares tips on doing thorough training and following manuals to get the best results on every job.

Expect to Learn:

• Why is pressure testing and evacuating each line set crucial?

• How a torque wrench prevents over-tightening flare nuts.

• What the dry mode feature in Midea systems does for humidity control.

• The importance of following the installation manual for better results.

• Why thorough training ensures high-quality installs and satisfied customers.

Episode Highlights:

[00:00] - Intro to Part 02 with David Rames

[01:33] - Key steps for pressure testing and evacuation

[02:59] - Using a torque wrench the right way

[05:36] - Manuals matter for a clean install

[07:23] - Understanding torque ranges and flare fitting

[09:25] - Leak testing tips and skipping filter dryers

[10:56] - Doing evacuation and decay tests properly

[13:56] - Good installs stop blaming on equipment

[16:42] - Using dry mode for better humidity control

[18:12] - How dry mode changes fan speed and coil temp

[20:12] - When misuse, not installation, causes complaints

[25:21] - Wrap-up and where to learn more about Midea

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