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

[@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!

[@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!

[@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.

[@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!

[@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

[@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.

[@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.

[@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.

[@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!!

[@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!

[@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.

[@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 !

[@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!!

[@woodsruralguy4317]

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

[@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

[@vicenteherrera2751]

1st month in hvac I appreciate this

[@daviddelgado475]

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

[@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.

[@polarunion]

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

[@acservicetechchannel]

Thanks Patrick!

[@siulseyer8053]

Outstanding video. Thanks Howdy from the great Republic of Texas

[@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.

[@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!

[@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!

[@Tornel07]

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

[@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.

[@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!

[@kyamudeenkhan3720]

Your every tools is very comfortable

[@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?

[@vjnblnum2303]

Thank you. I always see vaulable lessons on your channel

[@acservicetechchannel]

Thanks a lot Vjn!

[@15901111]

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

[@acservicetechchannel]

Thanks a lot Rafa!

[@tomharris294]

Always the best instructional videos

[@xitanm8963]

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

[@acservicetechchannel]

Thanks Xitan M!

[@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

[@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.

[@JDT738126]

Thanks again for another great vid

[@acservicetechchannel]

Thanks JDT738126!

[@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!

[@carlosportillo8863]

Great Instruction! Thanks ACST.

[@acservicetechchannel]

Thanks a lot Carlos!

[@ejohnfall]

Good job mini split are the future thanks

[@acservicetechchannel]

Thanks ejohnfall!

[@carlton997]

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

[@shortshorts4265]

Perfect video! 👏 thanks so much

[@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.

[@acrepairnearme]

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

[@acservicetechchannel]

Thanks Tapch MC!

[@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

[@ygung]

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

[@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 ..

[@TK-123]

Very well done. Thank you!

[@acservicetechchannel]

Glad you liked it!

[@purduephotog]

So nicely done.

[@acservicetechchannel]

Thank you very much!

[@davidater9]

Why can we use flare fittings with R410 mini splits but have to braze condensers? It is the same gas and pipes at the same pressures. Great Video

[@turboflush]

I never seen a torque wrench like that. Let alone anyone ever torque those fittings. Wow. Any apprentice under you is lucky.

[@acservicetechchannel]

This way you don't have any seeping leak over time, thanks TurboFlush!

[@NoneMechanic101]

Great video

[@acservicetechchannel]

Glad you enjoyed it

[@kyamudeenkhan3720]

Your vedio is very good and useful

[@TheHarrisal21]

I installed my 5th mini split yesterday.

[@acservicetechchannel]

Nice!

[@doddgarger6806]

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

[@acservicetechchannel]

Sweet, thanks!

[@ЕкатеринаКалиниченко-и2м]

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

[@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!

[@geojor]

very good for DIYers ...

[@acservicetechchannel]

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

[@wimadehi8116]

Thank you my friend

[@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

[@rondawson8578]

Make sure you put vacuum oil on all your flare fittings

[@gregrichard9192]

Great video 👍 However those are not reaming tools. Those are deburring tools

[@dttub]

Very clear and helpful. Thanks.

[@acservicetechchannel]

Thanks dttub!

[@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

[@victorvillafane252]

You are the best my friend

[@acservicetechchannel]

Glad to help Victor!

[@abrahammcdonald1049]

Greatest job

[@airmechanical7163]

Another excellent video!

[@acservicetechchannel]

Thanks Air Mechanical!

[@grantayvazyan5719]

well i instal one but i didn’t know that need to be tight with torque n i think i loos freon need to pump again we’ll it was my first installation split unit next time i do with torque 12 on small pipe 40 big got it thx

[@asadbabilbabil7791]

Good job

[@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.

[@joe2thesequel]

Thank you! Great Video!

[@riadhch5643]

thank you

[@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

[@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

[@tunintunin3417]

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

[@thomas4362]

I don't understand why your torqueing down the 1/2" line to 40+ foot-pounds when many others call for 25.8 then loosen then re torque to 26.6 Foot Pounds including Mr Cool Non DIY units. Their 1/4 line specs were 11.00 pounds then tighten up again to 11.8. Can you explain why your saying 40 Plus foot pounds with the same copper lines?

[@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

[@efraimdalligos9471]

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

[@coffeedollsvp]

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

[@ahmedabdullah1705]

Very good explain

[@acservicetechchannel]

Thanks Ahmed!

[@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

[@domas4463]

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

[@cu27rotary70]

Fujitsu recommends against Nylog.

[@acservicetechchannel]

Thanks Cu27 Rotary, I use either a small amount of nylog or POE. We have been using POE for years with no leaking problems. I believe some techs are putting too much nylog on each joint and it is ending up in the lines not good, thanks Cu27!

[@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?

[@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

[@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.

[@riotgear6891]

How do you feel about Spin Tools flaring drill bits?

[@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.

[@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

[@mo9488]

Love your videos and attention to detail. One thing I noticed is that the first two or three feet of line set that comes from the air handler is not insulated separately but has insulation that goes over both them together. I know the manufacturer does this but do you ever try and separate them so they are not touching or insulated them separately?

[@acservicetechchannel]

There typically just isn't enough room. They aren't fully touching but that would be great if they were kept separate, thanks

[@mo9488]

@@acservicetechchannel ok, thanks.

[@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

[@runningcoyote3897]

I use the thickness of a nickel to help me get the flare right lol.

[@acservicetechchannel]

ha ha wow, thanks

[@DavidMay2nd]

I got the CPS flare tool kit and on the block already has the stopper so perfect amount everytime.

[@gregorywootton3870]

1.95 mm quite a bit different from the quoted 3/16.

[@P8qzxnxfP85xZ2H3wDRV]

Which one is the gas line and which one is the liquid line? The smaller or the bigger one?

[@acservicetechchannel]

The larger one is the vapor and the small one is the liquid, 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.

[@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.

[@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?

[@بوفارسبونورا-ص7ه]

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

[@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

[@RadioRich100]

When shortening mini split lines - (mine comes 16ft) how short can I make them ? Is there a minimum length they have to be?

[@Froggability]

Could be in the spec, normally 3m /10feet

[@AnotherOCD]

I know this is a mini-split, but can you use flare nuts on the 4 connections (2 at the condenser, 2 at the evaporator) of your standard 2 ton R410 unit you find in a lot of homes. Why is brazing so prolific and not this?

[@acservicetechchannel]

Brazing has less chance for leaks. Flares need to be tightened to manufacturer torque specifications, thanks!

[@AnotherOCD]

@@acservicetechchannel but can be used if you have the torque wrench to do it with ? I meana 410 ductless minis use them so I assume they can withstand the pressures?

[@Froggability]

Darrin Alcorn. You just gotta use what the manufacturer supplies. Braze for really old school units, and anything about 3/4+

[@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