How to Flare and Install Copper Line Set on a Mini Split Unit!

In this HVACR Training Video on Mini-Splits, I Show Step by Step How to Cut, Ream, Flare, Nylog, and Torque Flare Nut Connections to Copper Tubing in order to install Line Set on Ductless Units.
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Tools Used In The Video
Yellow Jacket Torques Wrench- amzn.to/2NRR68Q
Yellow Jacket Flaring Tool- amzn.to/2OBxGlM
Yellow Jacket Flaring Tool with Set Depth- amzn.to/2QIKsQH
Nylog- amzn.to/2MLJcch
Ridgid Tubing Cutter- amzn.to/2DnjjR1
Wolverine Tube Reamer- amzn.to/2QGLyMV
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Our Related Videos/Articles
• Do Dry or Wet COPPER F...
• Why Eccentric Flaring ...
• SPIN Swage and SPIN Fl...
• 10 Reasons Why A Mini ...
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⚠️ Disclaimer:
Information in this video is intended for educational purposes only. Any work related to the topics in this video should be performed by licensed technicians or by apprentices under the supervision of licensed technicians. AC Service Tech LLC is not responsible for any possible damages or injuries caused by the use or misuse of any information provided. ▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬
#hvacr #hvacr #hvactrainingvideos #hvactraining #hvactraining101 #acservice #acservicetech #copper #coppertube #tubing #flare #brazing #tube #lineset #flaring
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Shop through Amazon! Your Purchases through Amazon provide a means for channels such as mine to earn advertising fees from all purchases after clicking through. Prices are the same as normal.

[@adobemastr]

Excellent! No nonsense, no goofiness, no overpowering and annoying background music, no stupid faces, no jokes and juvenile silliness-just "get down to business" with a professional presentation. First class!

[@AnnLippert1]

Uh oh, my videos are goofy. But I learned a lot from your comment too.

[@adobemastr]

@@AnnLippert1 Great! I'm glad you are humble enough to say you "learned a lot" from my comment. I cannot stand goofiness, silliness, annoying and overpowering background music, etc. like I wrote in my comment. I turn those kind of videos off long before they get a chance to annoy me any further. I hope you are inspired to professionalize your videos.

[@barrassalon7722]

That was a perfect explanation! For those of us that build and work with our hands naturally, but lack expertise in other fields, this was really helpful, strait forward, and easy to understand. Thanks!

[@arturobolanos6061]

Great Video, My Uncle told me about it 40 years ago when he installed Central HVAC system. I really enjoy and learn alot on this channel.

[@cynthiasloan5069]

Thanks for the great lesson. When I installed a 2 way fridge in my camper, the line got a bad crimp in it (note to self-it would have been easier with an extra pair of hands...) I wanted to replace that section of line. It is not leaking now, but I don't want to take any chances with damage from travel vibration. You saved this carpenter's daughter $80 in labor at the RV dealership, plus gave me another DYI skill!

[@drifter436]

I always learn something new from you, Had never done a mini split(don't see them in my neck of the woods much). But when i have to do one i will at least have some ideal of what is going on, Thanks to you. I have said it a thousand times before, You sir are the best better than all rest.

[@acservicetechchannel]

Thank you very much drifter436!

[@casconie]

you are an outstanding(flawless) teacher of HVAC for youtube reference DIY'ers. thank you very much for the expert knowledge, tools & equipment required for installations. 👍 👍 way up.

[@acservicetechchannel]

As long as anyone working on the systems are EPA 608 certified and have some experience already, thanks for the comment Melbourne e adams jr!

[@casconie]

your are welcome.

[@TheBlairHouseProject]

@BIG SHAQ They work for anyone doing these systems with an ounce of common sense and ability. Great videos! Got my subscription for sure!

[@DaveXPAC]

Awesome video. Detailed install show-and-tell. Your channel is hands-down the most useful A/C service resource on the internet.

[@acservicetechchannel]

Thank you for your support!!

[@stuzman52]

Very well done and you’re the only one that I’ve seen that shows using a torque wrench on KZbin.I installed a mini-split heat pump for my garage about a month ago and filmed it for KZbin. Your methods are nearly identical where the flaring tool and torque wrench I used are from Hilmor and I used Nylog also. Great work as always and keep up the good work. 😀👍

[@acservicetechchannel]

Thank you very much Stuzman, I appreciate your comments!

[@donbewaro1828]

I love this video and I've learned a lot. But may I suggest that when using torque wrench, tighten up to the point when you hear the click ONCE, and stop immediately. Anyway, thanks for making this.

[@TheHarrisal21]

@@donbewaro1828 I learned that lesson after ruining 2 flares. I was always a brazer. Manufacturers put max torque ratings in the installation manual for a reason I see. Lol

[@doddgarger6806]

@@donbewaro1828 you can click it as many times as you want it won't change the torque significantly

[@arodandjeter1]

Yeah all those guys cranking down the flare connections are some HACKS. Can't tell you how many mini splits I've had to cut lineset and replace because somebody else didn't know what a torque wrench was

[@Dyllanes_Ingeniero]

Hello, Greetings from MEXICO 🇲🇽, it is the best video I have seen doing this Process. These unions have always had problems due to leaks, but today I learned enough with you; I subscribed to your Channel, Thank you, Thank you very much. Hola, Saludos desde MÉXICO, es el mejor video que he visto haciendo este Proceso. Estás uniones siempre he tenido problemas por fugas, pero hoy Aprendí Bastante contigo; me suscribí a tu Canal, Gracias, Muchas Gracias.

[@polarunion]

Agreed. This is timely. Links to the tools also really helpful. Cheers.

[@acservicetechchannel]

Thanks Patrick!

[@kenwilson3689]

Excellent video ! Easy to follow. Wasn't sure I wanted to buy the tools to do this but after watching this, Im definitely doing it. Thanks !

[@vicenteherrera2751]

1st month in hvac I appreciate this

[@woodsruralguy4317]

Noviceelder Great video! I have crimp in propane line. your clear step by step will make the replacement much easier!

[@briancrane7634]

Best AC training vids EVER! Thanks! And Yellow Jacket looks like they make GOOD stuff easy to use. I plan to use their tools from now on. Thanks again!

[@acservicetechchannel]

Thanks Brian!

[@TheHarrisal21]

Im a JB guy.

[@tomharris294]

Always the best instructional videos

[@daviddelgado475]

Wow brother I love that you work clean man. Also you invest in good tools. Work smarter not harder.

[@scotta9114]

Thank you for the great video instruction. I use a product that is inexpensive insurance. It is called Flaretite. I have no affiliation with Flaretite but highly believe in their product. Have had zero callbacks due to refrigerant loss. They are basically a gasket for flare connections. Even tried Flaretites on a poorly done flare and it sealed perfectly. They may send you some samples to try for yourself. I have shared some of my inventory with other HVAC Technicians and they are impressed. I very much enjoy this channel! Thanks again.

[@sreenivasanm4303]

Great video with detailed explanation. Thanks for introducing proper tools and links to obtain them. This video has immensely helped . thanks.

[@acservicetechchannel]

Thanks a lot!

[@AnnLippert1]

WOW I LEARNED A LOT!! i had no idea how a torque wrench worked. im about to install a mini split so this is great info!!

[@Hubjeep]

Great video! I used an automotive torque wrench with crowfoot. From what I read it's accurate. The YellowJacket flare tool is awesome... as a homeowner I still saved over $1,000 on install of my first unit after buying the tools including vac pump and micron gauge.

[@joebrewer5885]

Do you remember what size crow's foot you used? Are the refrigeration nuts sized metric? Did your research say how the crow's foot should be oriented on the wrench, straight or at a 90? One youtuber said at 90 which seems to make sense.

[@Hubjeep]

@@joebrewer5885 As I recall it was metric. I think 90* was what I did.

[@centauri8820]

@@Hubjeep Yeah it's 90 degrees, I've got an install coming up and have been researching. I couldn't pull the trigger on a $200-300 torque wrench for HVAC that I'm going to most likely only use once, maybe twice in my lifetime.

[@luiselizalde6757]

Great explanation, thanks teacher for sharing your knowledge. Hey guys he is really a good man.

[@acservicetechchannel]

Thank you very much Luis, that was very kind!

[@siulseyer8053]

Outstanding video. Thanks Howdy from the great Republic of Texas

[@Tornel07]

This video saved me on a recent install. Thanks again!

[@vjnblnum2303]

Thank you. I always see vaulable lessons on your channel

[@acservicetechchannel]

Thanks a lot Vjn!

[@JDT738126]

Thanks again for another great vid

[@acservicetechchannel]

Thanks JDT738126!

[@carlosportillo8863]

Great Instruction! Thanks ACST.

[@acservicetechchannel]

Thanks a lot Carlos!

[@joe2thesequel]

Thank you! Great Video!

[@acrepairnearme]

Great video. I’m impressed of it. Very interesting process! Like it! Thank you!)

[@acservicetechchannel]

Thanks Tapch MC!

[@kevinhaskins6619]

Great content. I religiously watched your process and the 10-Reasons why a mini-split flare may leak before buying all the equipment to do mine. I'm using the Navac NTF66 flaring tool which is very similar to the Yellow Jacket but it has a standoff that slides and gives you a reference for how far out the tubing should stick before you ratchet down and flare. Makes perfect flares every time. I'm using the cheaper CPS torque wrench which is fine for installing a couple units but setting the torque on it is goofy. If I were a full-time tech I'd buy the Yellow Jacket torque wrench set.

[@ygung]

You're very good. Thank you for your video.

[@ejohnfall]

Good job mini split are the future thanks

[@acservicetechchannel]

Thanks ejohnfall!

[@MyBallzGotShocked]

Good vid. I would recommend putting the nylog on the backside of the flare as well as the threads of the nut. These torque specs are calibrated for lubricated mating surfaces. Having no oil on the threads increases the friction when tightening.

[@acservicetechchannel]

Nice tip, I just don't want anything to loosen over time due to vibration, thanks!

[@oso1165]

Do not do this.

[@airmechanical7163]

Another excellent video!

[@acservicetechchannel]

Thanks Air Mechanical!

[@dttub]

Very clear and helpful. Thanks.

[@acservicetechchannel]

Thanks dttub!

[@TK-123]

Very well done. Thank you!

[@acservicetechchannel]

Glad you liked it!

[@doddgarger6806]

Thanks for the free knowledge!

[@acservicetechchannel]

Glad to help! Did you check out our video on the mini-split vacuum procedure and breaking the vacuum with refrigerant from the bottle? Thanks! kzbin.info/www/bejne/oWrYoJuYjqmoiNU

[@kyamudeenkhan3720]

Your every tools is very comfortable

[@purduephotog]

So nicely done.

[@acservicetechchannel]

Thank you very much!

[@kyamudeenkhan3720]

Your vedio is very good and useful

[@victorvillafane252]

You are the best my friend

[@acservicetechchannel]

Glad to help Victor!

[@abrahammcdonald1049]

Greatest job

[@xitanm8963]

Very good video I like to watch a pro on the job

[@acservicetechchannel]

Thanks Xitan M!

[@ekitching]

Thanks for these helpful videos on the mini splits. I have installed several of them at my home. I recommend you get a professional flare tool. I recently purchased a cps clutch type and it makes perfect flares. The first one I had, yellow jacket, would not flare 5/8" correctly after 3 tries and the refrigerant leaked out. Once I got that fixed it has been running perfect ever since (a Gree 12000 btu unit). Another unit leaked at the 1/4" flare connection (a Klimaire), costing $600 to fix. Another one of my units had electrical problems after only 1 month of operation, another Gree. Overall, they do kick butt once they are running properly.

[@Froggability]

You spent how much on tools? Far more than just getting a tradesmen in. I'll give you points for enthusiasm

[@gracida6]

dont blame the flaring tool, if you had been a little more clever you would have pressure tested

[@wimadehi8116]

Thank you my friend

[@rubelborg4137]

Love the video and needless to say i don't get to impress. With hvac tech video but I can tell you know how to work.

[@acservicetechchannel]

Thanks Rubel!

[@hangngoaigiare]

Nice vid thx. You can open the 2 cap a little bit to align them with the valve so you can fit the wrench straight to hold the valve while tight the flare nut. Should test leak at 600 psi for 24 hours.

[@acservicetechchannel]

I often do a leak test at 300 to 400 psi with a digital gauge. The digital gauge will allow the tech to see a greater detail for pressure falling over a shorter amount of time. We used to use the compound for a longer period of time but no longer need to do this. Also after the vacuum is pulled and the tech moves to perform the standing vacuum test, this test will verify if everything is fine and that no moisture, air or leaks are present, thanks Quang!

[@hangngoaigiare]

AC Service Tech LLC Thx i just tried input my old day mitsubishi training.

[@NoneMechanic101]

Great video

[@acservicetechchannel]

Glad you enjoyed it

[@ahmedabdullah1705]

Very good explain

[@acservicetechchannel]

Thanks Ahmed!

[@asadbabilbabil7791]

Good job

[@acservicetechchannel]

Tool List- www.amazon.com/shop/acservicetech Mini Split Book on Our Website- www.acservicetech.com/mini-split-book Mini Split Book on Amazon- amzn.to/3ytHJSs Mini Split Book on TruTech Tools- www.trutechtools.com/BooksGuides Mini Split E-Book on Google- play.google.com/store/books/details?id=HN-iEAAAQBAJ Mini Split E-Book on Apple- books.apple.com/us/book/id6445178399 For those that are looking for the tools used in the videos: (Linked Below) Yellow Jacket Torque Wrench- amzn.to/2NRR68Q Yellow Jacket Flaring Tool- amzn.to/2OBxGlM Yellow Jacket Flaring Tool with Set Depth- amzn.to/2QIKsQH Nylog- amzn.to/2MLJcch Ridgid Tubing Cutter- amzn.to/2DnjjR1 Wolverine Tube Reamer- amzn.to/2QGLyMV Here is the Link for the FieldPiece ST4 Dual Temp Meter- amzn.to/2AhR6ph Here is the Link for the Yellow Jacket Refrigerant Manifold Gauge Set used in the videos amzn.to/2aenwTq Here is a link to Refrigerant hoses with valves used in the videos amzn.to/2aBumVI Here is a link for RectorSeal Bubble Gas Leak Detector amzn.to/2ckWACn Here is the link to the Appion Valve Core Removal Tool- amzn.to/2uYr8WL Here is the link for the Ratcheting Service Wrench amzn.to/2dGV4Nh Here is the Link for the newer UEI DL479 Multimeter with temp sensor- amzn.to/2jtsUbJ Here is the link to the CPS Vacuum Micron Gauge- amzn.to/2v1nM3O Here is the Link to the Appion Blue 3/8" to 1/4" Vacuum Hose- amzn.to/2uYlVyc Here is the Link to the Appion Red 3/8" to 1/4" Vacuum Hose- amzn.to/2uYg6Ro Here is the link to the Yellow Jacket 1/4" by 1/4" heavy duty hose straight- amzn.to/2umtcod Here is the link to the pack of 25 C&D valve cores- amzn.to/2J1lurm Here is the link for the C&D Valve Core Wrench, Container, and 3 valve cores- amzn.to/2EVGkps Other tool links can be found in the video description section. Shop through Amazon! Your Purchases through Amazon provide a means for channels such as mine to earn advertising fees from all purchases after clicking through. Prices are the same as normal- www.amazon.com/shop/acservicetech All of the ACSERVICETECH Playlists- kzbin.info/door/OZR-1IqsAer9wzlvFgb4mAplaylists?view_as=public

[@tonnygarway5195]

I need some tools.

[@ssamd263]

Yellow jacket says 1mm or 3/64 and I think you said 3/16. I do like the idea of more contact of the flare.

[@geojor]

very good for DIYers ...

[@acservicetechchannel]

As long as anyone working on the systems are EPA 608 certified, thanks Pei Broker!

[@lazerusmfh]

Good tutorial, though I would recommend cleaning your flare surfaces after you flare, as the tool is burnishing the face you will have copper left on the face of the flare than can potentially be a leak source, and a source of contamination in the system. Cheers

[@acservicetechchannel]

Great Tip Vega!

[@riadhch5643]

thank you

[@ravit6223]

Perfect 👌👍

[@acservicetechchannel]

Thanks Ravi!

[@jackpast]

Great video, Craig. And your filming/editing was great, too. I was thinking about your set-up on several shots.

[@acservicetechchannel]

Thanks Jack! Yeah the install takes longer when trying to set up the camera at each spot, thanks

[@15901111]

Thanks for the class. Every video you upload is a masterpiece .

[@acservicetechchannel]

Thanks a lot Rafa!

[@jce102jz4]

Lol the edge of your flare is threaded thats pretty nice.

[@carlton997]

Great video. Love the tools. Were can I find the same tools in this video? Thanks again

[@TheHarrisal21]

I installed my 5th mini split yesterday.

[@acservicetechchannel]

Nice!

[@Maykil107]

thanks so much

[@acservicetechchannel]

You're welcome!

[@Maykil107]

@@acservicetechchannel 😊😊😊

[@doddgarger6806]

Found a husky flare tool identical to this with the clutch $39 has the eccentric mandrel as well

[@acservicetechchannel]

Sweet, thanks!

[@Alwaystrucking658]

Hey there amazing video ..can you do a video on the yellow jacket Torque wrench how to adjust it and us it please sir ..

[@randallsnell5767]

It seems like every call I had to those type of units ended up being a leak at the flare. Sometimes they lose enough gas and get reset so many times that it takes the compressor out. One of the biggest names in my area used Leak-Lok on the flares.

[@spartans2288622886]

Per usual, excellent simplified instruction. What are your opinions on the Spin Flaring kits?

[@acservicetechchannel]

They are ok, did you see the video where I did the demonstration using them. It was one of the latest videos.. I still prefer my eccentric tool.

[@TheSn1per]

Great video. I see you have links to just about everything. What about the fitting themselves. Suppose you want to add a connection point so the male and female ends? both 3/8 and 3/4 one end will have the flare the other weld on. thanks again. Im looking to add flare fittings to my unit some one cut off the flared ends. TIA -S

[@acservicetechchannel]

They can be brazed as long as you flow nitrogen through. You wouldn't want to braze in the flare connector, thanks

[@kw77827]

Hey Craig, when using the yellow jacket flaring tool i sometimes struggle to get the depth just right. It seems to me that the depth needed to achieve a flare that backs up tight to the nut (as you like to make them) differs between different sizes of pipe. Is there some kind of a depth gauge or something to cut down on the guess work? Thanks

[@user-xe3zd6in2l]

Great video, thanks indeed for the good work! I was wondering if it is ok to re-use flares on a copper line set for the second time, i.e. if I need to unscrew the line set to do some minor adjustments to my newly installed mini split system and then retighten the flares again? Is there a way to ensure the flares will hold for the second time, or is it advisable to always make new flares due to copper squishing onto brass cones, cold-working and hence missing some of its elasticity after having been used once? Any practical experience or guidelines would be highly appreciable. Thanks.

[@acservicetechchannel]

It should be ok to use again but add some refrigerant oil or nylog onto the flare seat, thanks!

[@doddgarger6806]

I've heard they make flare gaskets for this reason

[@Froggability]

Ideally a new flare. But at a pinch reuse with Nylog

[@rogerf3622]

Excellent video. Does the manufacturer recommend the use of Nylog or is that your recommended practice?

[@acservicetechchannel]

Hey Roger, it is my practice. Here is the product flyer- www.refrigtech.com/wp-content/uploads/2017/11/Refrige_Nylog.pdf

[@davidb2438]

Should you seal the ends of white insulation, I’ve been hearing about a lot of problems with moisture interacting with insulation and causing pin holes in copper

[@laurenleichtnam]

What brand adjustable wrench were you using? Proto?

[@whymedude88]

Good morning I just subscribe to the channel very clean work! I have a question regarding the line set coming down the wall I have a similar situation that is being installed here today actually. I don’t want to have the ugly looking insulated copper pipes just coming down the wall as it’s where you walk in through my gate of my house on the side. So I would like to use line hide or something similar to hide all of the pipe as it comes down the wall is there anything that you can recommend that will fit everything inside? My AC unit is residential and 2 ton. The total travel from furnace to the side of my house is 70 feet.

[@efraimdalligos9471]

Do you have a list of torque needed from 1/4 to 3/4 pipes? Thanks

[@samanthagurule4624]

Sometimes my 1/4 do a slip type of thing when I torque it. I have an electronic torque wrench. I set it to 14 but when it gets to 13 to 13.5 it goes back down to 12. Never gets higher

[@coffeedollsvp]

What diy brand do you recommend for us Novice to install....thanks for ur knowledge.

[@ffsteel111]

Would you flare over braze solder the joint ? I’ve heard a lot of times flare fittings can have issues even if they’re done perfectly correct what is your take on this

[@muhammadnaim3506]

What kind of wrench that you used? That clicking wrench

[@capitaldd5840]

Great video... pretty informative. No Teflon tape on the thread is needed...? I don't have an ac unit but was watching the flaring and tool - nice work...not sure if you know - is that yellow jacket stuff specific to copper or would it work on mild steel(car brake lines)....? Thanks for posting..

[@Froggability]

Dont use ptfe tape., (it's the flare not the thread section that forms the seal) 2/ yes the tools are HVAC only, cars have different tooling again

[@tunintunin3417]

Hi, installing some units for my self, I don’t have a torque wrench, I wonder if I will guess it close enough? 😅

[@joebrewer5885]

Are refrigeration flare nuts sized metric? What are the sizes of the 3/8" and 1/2" line nuts? Can an automotive torque wrench with a crows foot work for torqueing?

[@renetorres2287]

Very good video.. I have a question where does it say the pressure pounds for the torquing.?.

[@acservicetechchannel]

It will always say that in the installation instructions of the model number you are working on, thanks Rene!

[@DavidMay2nd]

Usually on the tourqe wrench its self too.

[@lyem654]

I see the copper tube was twisting when the flare nut was torquing down. This means the flare was turning and rubbing against each other, and you don't want that. Why not add some Blue Nylon to the back of the flare so the nut would not turn the tubing?

[@douglasthompson2740]

I am assuming that correct procedure when pulling a vacuum on a unit such as this mini-split with only one service port is to pull from just one side? Saw your video on vacuuming in which you highly recommended pulling from both sides but few minis have two service valves. Good series. Take care. Doug

[@acservicetechchannel]

I just did a vacuum procedure in a mini split unit as a recent video. Check out the channel home page or look up mini split vacuum, thanks!

[@fridgydownunder6734]

Thanks for this video! How do you charge on mini splits Superheat?

[@acservicetechchannel]

It is total weight method only since they have a vrf compressor unless the manufacturer prescribes another charging method, thanks!

[@jimdefilippis9630]

what the vrf compressor stand for. thanks@@acservicetechchannel

[@SovereignTroll]

@@jimdefilippis9630 variable refrigerant flow?

[@domas4463]

Hi, Is it not better to have a brazing joints instead of flaring joints where possible?

[@rondawson8578]

Make sure you put vacuum oil on all your flare fittings

[@rotaxrider]

Great Videos !!!!!!!! Would there be any advantages in trying to keep the line set as short as possible? I know looking through the Installation literature that there is a maximum but I know I’ve seen some installers leaving a coiled excess of line tucked in behind the outdoor unit. I just purchased a single zone unit and my vertical run might be no more than eight feet to the wall mounted air handler.

[@acservicetechchannel]

The mini split units will usually say a minimum and maximum. That must be a homeowner that didn't want to reflare the ends after cutting or something. I usually leave them short. My last one was only 4 or 5 ft and refrigerant didn't need to be recovered but check the literature, thanks

[@rotaxrider]

@@acservicetechchannel Thanks for the reply I just checked the Installation: Minimum Pipe Length is 10f/3m Maximum Pipe Length with no additional refrigeration is 25f/7.5m Total Maximum Pipe Length 98f/30m Unit is a Carrier Comfort Series Heat Pump 18 BTU

[@acservicetechchannel]

If ten foot is the minimum then 2 foot worth of refrigerant will need to be recovered after the system is broken with refrigerant. Make sure that you are EPA 608 certified before working with refrigerant, thanks!

[@rotaxrider]

AC Service Tech LLC Thanks for the suggestion and reply. I think when everything is said and done the line set will be 10 ft or a bit more. I’m doing the rough in installation for everything and I’ve got a Red Seal HVAC friend to do the rest with the right tools.

[@acservicetechchannel]

Oh ok good, then, thanks

[@OneBiteWillis]

Thanks for your videos! Have you ever/would you ever just cut off the ends, and braze the two lines together? It seems easier, and less of a risk of leaking in the future. Thanks!

[@acservicetechchannel]

Absolutely, if you flow nitrogen through the vapor port and let it come out the line set before the connection point on the outdoor unit. then you can braze any of it. I just brazed in parts of a job on a large ductless system last week, thanks

[@cruisemates]

I have a haunting question. How much line set can you remove (how many feet) before you have to worry about the amount of R410a in the system? I know Pioneer is pretty precise about how many OZs to have per running foot of line set. But is there any leeway? What if I want to cut off 4 feet from a 16' line set?

[@doddgarger6806]

I torqued mine by feel and it held perfect vacuum for 2 hrs and passed the soap and water test as well ... I have turned wrenches a long time and done many renovations, so the feel for torquing flare nuts is not a new thing, but I'm still gonna get some crows feet and use a torque wrench on the next one, on such a critical operation no need to guess

[@acservicetechchannel]

Absolutely! Thanks!

[@Froggability]

A lot of guys over-torque when they guess, or are inexperienced. Torque wrench is best. Covers your warranty too. We've done piles of repairs to other guys over-torqued split flare nuts.

[@Keo0oo]

I'm currently an apprentice with 1.5 years of experience and will be purchasing at least $200 worth of stuff from your Amazon links. Just curious if you have a cheaper vac pump in mind for a 1 ton mini split? Don't wanna jump in with the big boys pump just yet, the one you linked is a little pricey lol. Thanks.

[@acservicetechchannel]

Hey Keo GG, you may want to try this CPS one- amzn.to/2UX9MEf - I would stay away from those really cheap off brand vacuum pumps. I had a couple at the school and were not capable of drawing a deep vacuum, thanks and other tools are link at amazon.com/shop/acservicetech thanks

[@riotgear6891]

How do you feel about Spin Tools flaring drill bits?

[@user-sm9hh9hz8j]

The male part of the connection , how it deos attach to the pipe ? Is it by soldering ( wellding ) ?

[@Harolddespui]

Could 2k epoxy work instead of nylog?

[@gman5986]

I wanted to prepare and finalise my self install on my Mini Split System Installation (needing longer line set and additional freon put into the system by a HVAC Tech) awaiting the HVAC tech appointment next week. Would you happen to know if its ok to uncap my line set and install on one end to the (Head Unit ) and not finish the startup till the xtra freon is installed? Would there be any issue with existing moisture in the lines from sitting for a week or so?

[@acservicetechchannel]

As long as the lines are not just sitting open there won't be excessive moisture, thanks

[@rsauder]

At 1 min mark , what if the ends coming from the wall are female fittings and your adjoining line set is also female? I have this situation (I have a 50' line that I need to extend by 10'. Do the male ends that you need to add to the opposite end have to be silver soldered? Or can they be a flared fitting as well????? Thanks in advance.

[@jacobogomez8013]

Hi I have a mini split system that has to have the line kit replaced but all I see is 3/4” on one of the nuts and 7/16” on the other is that the tubing or the bit because I can’t find tubing that size

[@athandevitsakis9318]

Hey there! Hoping to get a response regarding torque wrenches recently bought the blackmax digital wrench and Daikin call for 15.7NM on the 1/4 inch line for VRV. I'm finding it hard to read it on the screen because after finger tight it stops reading at about 12nm so I'm tightening a little more to approximately reach 15.7. Is this because the blackmax is a long wrench and you have more leverage with a smaller nut? Also only using nylog on my flaring cone not on the brass connection to avoid over torque as well. All other nut sizes don't have a problem at all it's a great tool and also have the yellow jacket digital wrench on the way too Hoping to find a solution!

[@Froggability]

Can go up to 18nm, yes it's seems not much more than finger right. 6inch Crescent is good on 1/4. Use 1 wrist/pound

[@bunker3493]

don't you need to vacuum the pipes before oppening the valves ?

[@georgetabatadze2192]

looking for VRF - Additional refrigerant charge estimation chart

[@bunker3493]

is nylog necessary ?