Hoses / Types and Applications w/ NAVAC - Short #198

HVAC School - For Techs, By Techs

Bryan Orr

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

4.8 • 985 Ratings

🗓️ 18 June 2024

⏱️ 17 minutes

🔗️ Recording | iTunes | RSS

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Summary

In this short episode of the HVAC School podcast, Bryan talks about hoses and their various types and applications, particularly focusing on NAVAC hoses.

Charging hoses (NAVAC: NH5 and NH5L) ideally shouldn't be longer than 5-6 feet, as the longer the hose, the more refrigerant it will hold. Manifold gauges also have leak points, so it's usually better to use probes instead of manifolds to help with charging. Charging hoses with ball valves (NH5S and NH5SC) can help you control the flow and are great for recovery. Whenever you use charging hoses, they will have a core depressor on one side only (usually the 45-degree side, if applicable); the right amount should be exposed, and the seal should be in good shape.

Larger-diameter hoses with higher burst pressure are advantageous for recovery (though it's better to have separate hoses for recovery and evacuation). Larger-diameter hoses of a shorter length will allow you to get a higher flow rate, including cases where you have 1/4" connectors (though the F1028 & F1029 Rapid Y connection fittings can help out with those cases where you have 1/4" connectors by giving you the ability to connect two 3/8" hoses); hoses with a diameter of 3/8" are usually the biggest recommended ones for recovery. NAVAC's recovery hoses are the NHR38AA and NHR38AB.

Evacuation hoses are even bigger. Some good evacuation hoses include the NH34AB and NH34AC; they are short 3/4" hoses that are vacuum-rated and quite flexible. NAVAC also has smaller hoses, which tend to look more like recovery hoses. You do not want to use 1/4" hoses and core depressors for evacuation, but they are good for charging.

Check out all of the hoses NAVAC has to offer at https://navacglobal.com/products-by-category/hoses-kits/.

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Transcript

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0:00.0	Hey, this is the HVAC School Podcast. I'm Brian. This is a short episode and this is a special episode. We're going to talk through
0:11.2	Navac and their hoses. They have a bunch of new hoses out. Some of them are new, some
0:15.9	have been around for a little bit, but they have a full suite of hoses. And we're going to talk
0:20.3	them through. But this is also just a great training conversation about
0:23.7	hoses in general because the silly as it may seem, like a hoses a hose, but a hoses not a hose,
0:29.7	nay, it is not. There are a lot of different types of hoses and we're going to talk through them in detail, specifically the
0:37.2	Navac versions of these hoses. But before we do that, let's also talk more about Navac.
0:43.6	The Navac, NX1, Nexus Digital Manifold Gage.
0:47.6	Compatible with over 72 refrigerants including the newly popular
0:52.2	A2L refrigerants that we keep talking about,
0:54.4	R32 and R454B. Among the highest accuracy manifold gauges in the industry
1:00.8	they offer a clear digital display, giving you precise readings at a
1:04.7	glance, and they integrate with the My Navac app, Navac temperature probes and Navac's
1:10.8	premium micron gauge.
1:13.1	So now you can monitor system pressure, temperature,
1:15.3	and vacuum all in one app.
1:18.4	To find out more, go to HVacr School.com
1:21.1	slash annex1 or go to navag global.com. All right so we're
1:28.0	going to talk through hoses so first off refrigerant charging hoses
1:30.7	charging and testing houses.
1:32.5	First things first.
1:33.1	With all hoses, you don't want hoses
	...

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