Ductless Installation P2 - Flaring, Charging and More

HVAC School - For Techs, By Techs

Bryan Orr

Training, Careers, Airconditioning, Self-improvement, Hvac, Business, Education, Refrigeration, Heating, Ac, Apprenticeship

4.8 • 985 Ratings

🗓️ 31 March 2017

⏱️ 37 minutes

🔗️ Recording | iTunes | RSS

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Summary

Jesse and I talk about MORE best practices for installing ductless systems.

Both lines should be insulated on a ductless system because they have electric expansion valves in the outdoor unit. Insulating flares is also a critical task. When it comes to flare fittings, overconfidence is a tech's biggest enemy. Techs often undervalue the process of reaming copper or overdo it. Bubble-testing the flare joints is always a best practice to evaluate the integrity of your flares and check for leaks. Do not braze copper on ductless systems!

Ductless evacuations require deep vacuums. Removing cores and valving off are best practices for evacuation; the goal is to reduce the risk of contamination, just like normal split systems.

Transcript

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0:00.0	This episode of the HVAC School Podcast is made possible by Testo and Carrier.
0:08.9	And I wanted to say that recently I finished building my dream home, the house I've wanted to build for a long time and I put in
0:14.7	a carrier VNA8 4 ton system which is kind of my favorite unit, favorite heat pump system
0:19.4	on the market today and we got it all dialed in with my test to equipment.
0:23.1	Legitimately we did that.
0:24.4	I'm not, this was all prior to any sponsorship deals.
0:27.8	And we have total under air in my house now and just to kind of preface this.
0:32.4	I'm not like a wealthy guy or
0:33.7	anything but I have nine kids so I need to have a big house for my nine kids and so we
0:38.8	have about 4,000 square feet and my power bill in Central Florida and needless to say it you know we run a lot of
0:44.6	air down here my power bill last month was 160 dollars with my high efficiency
0:49.2	carrier system and I obviously did a few other energy efficient improvements as well, but I'm pretty impressed by how
0:56.0	efficient that systems have been running. And big thanks to Carrier for making great products,
1:00.6	and thank you to them for keeping my power bill low.
1:03.0	We will make the best capacitors right here in America. We will make
1:14.9	capacitors great again. I'm waiting to see if the new administration will
1:19.1	deliver on this promise and make capacitors great again. But in the meantime, I'm Brian Orr and this is the HVAC School Podcast,
1:25.6	and today is just part two of our discussion, mine and Jesse Clairbout's discussion on some
1:31.6	duckless installation best practices. So now we talked about insulating
1:36.9	of the flare fittings, but let's talk about the flare fittings themselves.
1:39.7	Okay, so you and I went on a little journey in flare fitting land recently.
1:45.0	But let's talk about where you find the biggest issues that guys have on they're making flares for
	...

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