Check The Charge Without Connecting Gauges - Part 1

HVAC School - For Techs, By Techs

Bryan Orr

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

4.8 • 985 Ratings

🗓️ 13 June 2017

⏱️ 41 minutes

🔗️ Recording | iTunes | RSS

🧾️ Download transcript

Summary

In this episode of the podcast, we talk about gauges. Jim Bergmann from Redfish Instruments and the MeasureQuick app explains why you may want to check a charge without using a gauge manifold. (That's not clickbait; if you've already connected gauges to a unit once, you can probably check the charge of that unit WITHOUT gauges moving forward.)

HVAC units manipulate temperature and pressure in the refrigerant charge. Heat transfer occurs between the refrigerant and the environment, and various readings indicate the charge level WITHOUT necessarily connecting the gauges. So, you can check the charge if you know the unit's SEER rating, target superheat, DTD, CTOA, and if the unit uses a fixed orifice or TXV.

A large portion of checking the charge without gauges deals with "benchmarking" the equipment. You do that by evaluating the system's performance over time and comparing it to the performance when the system was first commissioned. Airflow WILL decrease over time due to components becoming dirty.

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

Transcript

Click on a timestamp to play from that location

0:00.0	This episode of the HVAC School Podcast is made possible by the Carrier Corporation, as well as Carrier Enterprise Florida.
0:12.0	This episode is also made possible by Testo. well as Carrier Enterprise, Florida.
0:12.9	This episode is also made possible by Testo,
0:15.4	Testo makers of high quality test instrumentation
0:18.2	for the everyday technician all the way up
0:20.3	to industrial applications and many, many more applications. You can find
0:24.7	testo products by going to truetech tools.com and you can get a great discount by
0:29.0	using the offer code get schooled at check out. We also have a new sponsor, Dan Foss and the Dan Foss family of applications.
0:37.0	The Dan Foss Toolbox, as it's known, and the Dan Foss Toolbox has lots of great applications, some of them specifically for Danfoss toolbox has lots of great applications.
0:43.0	Some of them specifically for Danfoss products and some of them very general, like the
0:47.0	Refrigerant Slider app.
0:49.0	You can find them for free on both Android and on iTunes.
0:52.0	Or you can save searching by just typing in Danfoss
0:54.9	dot com forward slash cool apps.
1:00.3	Less like a cowboy of HVAC and more like your annoying cousin Rantie.
1:08.5	Brian Orr.
1:10.5	Yes, this is the HVAC school podcast. I almost forgot the name of my own podcast when I started
1:16.7	my intro. I'm like, it's the HVAC. What's that stand for again? I'm Brian and today we have a almost a click-bait
1:25.3	seeming episode and I like how to check a charge without even connecting your
1:29.2	gauges and when Jim first brought this up I was come on, you're not actually advocating for not connecting
1:33.8	gauges. But no, really, he is advocating for connecting your manifold much less than we normally do.
1:40.3	And it's interesting because it's the type of thing that we use it as an insult, right?
	...

Please login to see the full transcript.

Previous episode | Next episode

Disclaimer: The podcast and artwork embedded on this page are from Bryan Orr, and are the property of its owner and not affiliated with or endorsed by Tapesearch.

Generated transcripts are the property of Bryan Orr and are distributed freely under the Fair Use doctrine. Transcripts generated by Tapesearch are not guaranteed to be accurate.