Birmingham training class

HVAC School - For Techs, By Techs

Bryan Orr

Education, Business, Self-improvement, Careers

4.9 • 1K Ratings

🗓️ 21 April 2022

⏱️ 163 minutes

🔗️ Recording | iTunes | RSS

🧾️ Download transcript

Summary

This podcast is a class that Bryan taught for BTrained in Birmingham, AL. He covers troubleshooting, installation, and commissioning best practices with a focus on the fundamentals.

To be a good troubleshooter, you must be able to find the problem, identify the source of the problem, fix the problem, and optimize performance based on your data, the customer's comments, and your observations. The Five Pillars of diagnosis aren't comprehensive diagnostic or charging criteria, but they can help you charge or diagnose a system.

Isolation diagnosis works best for electrical components; you isolate the problem area from the system and see how the system works without the suspected issue. If the system operates normally without the component in question, then we can conclude that our hypothesis about the "problem" part was correct.

Wide-narrow-wide troubleshooting is an approach that allows you to inspect the entire system, zero in on the problem, and optimize the entire system. By starting wide, going narrow, and going wide again, you can troubleshoot holistically.

Installations take place in several phases: pre-planning, planning, demo, installation, and commissioning. Many people place a lot of emphasis on the demo and installation and neglect the conversations and procedures associated with pre-planning, planning, and commissioning.

Bryan also covers:

Heuristics and mental shortcuts
Evaporation vs. boiling
Rules of thumb
Head pressure, suction pressure, and compression ratio
Energy transfer fundamentals
What superheat and subcooling really indicate
Restrictions and temperature drop
Delta T
"Redneck" compressor test
Testing circuits
Useful measurements and test instrumentation
Causes of compressor failure
Measuring airflow
Low vs. high static pressure
Bringing tribal knowledge to building design
Ductless systems, ventilating dehumidification, and sensible heat ratio
Manual J, attics, and combustion air
Radiant barriers and heat transfer
Supply relative humidity
Dehumidifier configuration and system design
Bad envelopes
Vented attics
Duct upgrades
Total effective length and turning vanes
Evacuation

Learn more about BTrained at https://btrained.net/ or on the BTrained YouTube channel at https://www.youtube.com/channel/UCnlDsWHT68gVwPrYYO5vhrw.

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Transcript

Click on a timestamp to play from that location

0:00.0	The HVAC School Podcast is made possible by these brand partners.
0:09.1	Refrigeration Technologies at Refriggedec.com if you have not tried out their new venom packs.
0:15.0	Their venom packs are their viper cleaners in much smaller more concentrated packs.
0:21.0	They have really nice tiny fill spouts. Very concentrated takes up less
0:25.8	room on the shelves and these things are durable. Let me tell you you can throw them all around
0:29.3	and they don't break. Far more durable, far safer to have on a truck than your typical gallon
0:35.2	cleaner containers. If you haven't tried it yet, give it a try. It is the
0:39.1	venom packs from refrigeration technologies at refrigibilitytech.com, the name you can certainly trust for all of
0:46.8	your HVACR chemical needs.
0:49.6	Carrier and Carrier.com?
0:51.4	Field Piece and Field Piece makes the entire suite of Job Link probes, everything
0:56.8	from monometers to indexichrometers, line temperature clamps with rapid rail technology.
1:03.0	Once you use the field piece job link probes for checking the system,
1:07.0	you're not going to go back to anything else.
1:09.0	It is what we use in our company.
1:11.0	We've been teaching it at the school and that students really love it.
1:14.1	Even people who are resistant to probes, even those who like typical analog type gauges
1:19.2	because it's what we're used to. I think once you try them, you're going to love them.
1:21.9	That's the job link probes from
1:23.7	field peace field peace dot com mitzabishi electric at mitzabishi comfort dot com This is the guy who used to buy turtle wax with his own money and wax condenses on every maintenance.
1:42.0	Brian Orr.
1:44.0	Yippe Kai I A.
	...

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