Steps to Vacuum and Charge Refrigerant on a Mini Split Unit!
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4 жыл бұрынIn this HVAC Training Video, I show which Tools to Use and the Setup Step by Step to Evacuate and Add Refrigerant into a Minisplit Unit. I Show Vacuuming the System, Performing a Standing Vacuum Test, and Breaking the Vacuum by Weighing Refrigerant into the System from the Bottle. Supervision is needed by a licensed HVACR Tech while performing tasks as Experience and Apprenticeship garners Wisdom and Safety.
Tools Used In The Video
CPS 4 CFM Vacuum Pump - amzn.to/2DxgPwY
CPS Vacuum Micron Gauge - amzn.to/2v1nM3O
Appion Valve Core Removal Tool - amzn.to/2uYr8WL
Refrigerant hoses with valves amzn.to/2aBumVI
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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. ▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬
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@acservicetechchannel 4 жыл бұрын
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
@garyyancoskie905 4 жыл бұрын
Where did you purchase the 5/16" female quick connect x 1/4" female SAE adapter for the pressure gauge. Can only find female x male adapters . Thanks
@tommyt4062 4 жыл бұрын
hiya, could you tell me the pipe run length (i'm guessing short?) and obviously its difficult to see from a video but is that 1/2 and 1/4 pipe? Thanks
@goldbangle6184 4 жыл бұрын
thank you so much because you now i can service ac 😍🌹🌹🌹🌹🌹🌹
@masoud_gh 3 жыл бұрын
شششششششش
@RajeshKumar-zf5je 2 жыл бұрын
PPP pppppppppppppp pp p0pppppppppppppppp0ppppppp of pp ppppp
@blackishpariah 4 жыл бұрын
I installed a Fujitsu last week, pulled down to and held 101 microns using your methods. You're my go to instructor.
@acservicetechchannel 4 жыл бұрын
Awesome Kenneth, great job!! Thanks for letting me know!
@lordjaashin 3 жыл бұрын
what is the size of charging port on your fujitsu split? is it 5/16 inch?
@HVACRTECH-83 Жыл бұрын
@@lordjaashin yes
@rickrockin155 3 жыл бұрын
I ve bought 3 mini ductless systems and this really helps me with the installation. I have to buy a few more tools and I'll be ready for the job. Thanks for the vodios they re so helpful, I'm always learning from u guys especially what my instructor in hvac school left out. I didnt know anything about the dry and wet bulbs, he never explained this, so I was always in the dark on how much refrigerant should be in a system.
@electricboogie709 4 жыл бұрын
I can't say enough about how I appreciate these. I have been doing HVAC/R for eight years now and I always go back and read, watch, learn, over and over again. Never being satisfied in myself, but making sure I do things always to the best I can. Plus my memory really sucks. Thank you!
@acservicetechchannel 4 жыл бұрын
Hey you will be great with all the investing you are doing in yourself!
@daveyboy8907 Жыл бұрын
Same here but at least we care enough to try our best..So many half ass techs out there just trying to bang them out and get done fast..
@marklennon1580 4 жыл бұрын
I have seen many videos on how to do this procedure but none of them even come close to the clarity and precision that A/c service tech brings to the table. Thank you sir for helping the general save money and the atmosphere at the same time.
@acservicetechchannel 4 жыл бұрын
I am glad that you learned and enjoyed it, thanks!
@youarehere1716 3 жыл бұрын
I'm a DIYer homeowner, not a tech. But for some reason I find heat pump technology fascinating even though at my age as an SW engineer, becoming a professional HVAC technician is not in the cards. After my 2nd multi-zone mini-split install where your videos provided most of what I needed to know, I finally bought your eBook. Your videos and free online docs helped me so much that I decided to get your eBook (to learn about checking and recharging a unit), and to understand things better. Also, you've earned the respect and appreciation to get some remuneration for your service, IMO. After getting about 10 pages in where you introduce the basics of refrigeration and the physics, I'm beyond impressed. The diagrams are excellent. The explanations, are clear, thorough, and convey the points succinctly. For anyone reading this, I'm in no way affiliated with these people, I'm just saying if you actually want to understand the core concepts and/or specifics, the book is a worthwhile investment. The eBook is pretty reasonably priced considering how good an educator the author is.
@floridasaltlife Жыл бұрын
Same here, in fact it drove me to get my 608 and it has become a hobby...
@krehbein 10 ай бұрын
Glad to hear other diyr’s can take this up as a fairly technical “hobby”. Not a sw engineer but web developer. Could you work on a traditional outdoor condenser unit, or the indoor evarporator?
@thomasjust2663 9 ай бұрын
Its good for doing stuff on your home I guess, but not to work as a tech, then you have to deal with using ladders, aggressive dogs, lady's who are never satisficed with the work, customers that hit on you (both women and men), it can create all sorts of drama, is it worth it to spends hundreds of dollars for work you do perhaps twice a year? I'm not sure it is a cost saver, also you have to separate space to keep these tools in working order
@Mike-01234 8 күн бұрын
I also do lot of DIY mostly automotive AC. In the last 3 years HVAC contractors have tripled their pricing, and many are just sales people trying to sell you new unit or a service plan. Now I do my own annual maintenance on my 4 ton packaged heat pump on my roof. I even ran a pex line off my evap cooler to connect a hose so I could wash the condenser every 6 months or after dust storms. I stock parts for my unit and my mothers AC split system caps, condenser fan motors, contactor. Local HVAC suppliers here refuse to sell to the public just buy online. The $1000 in stocking my parts, and HVAC tools is a tiny amount what one service call now costs from a local HVAC tech. My mother had a compressor run cap replaced HVAC tech charged her $680 that was during the week day not even at night or weekend. If they come after hours cap cost $1000 to replace it. New packaged unit install cost $12-15k now for a single stage goodman. Not even talking about duct work just $400 crane lift and use the same stand and elbow.
@harthenry 4 жыл бұрын
I would be more than happy to pay a technician more to charge my A/C if I knew he/she was as thorough as you. I've had a few guys come to our house that just bang on the unit and connect hoses and do not go to this detail (I guess that is why they've been here a few times). If nothing else, your video should be a good lesson to existing HVAC Techs to make videos so that I would feel comfortable in hiring them to come to my home. Not just good info/education for me, but great advertising for the HVAC Techs too.
@kiyoponnn Жыл бұрын
Agreed, I am sick and tired of getting scammed by incompetent morons.
@TheMicsaund Жыл бұрын
Agreed - I watch all these videos and wish I could find someone in my area who does such quality work. The large company in my area, who installed my new whole-house system, was skimping on the "annual required maintenance" for the first three years! In the fourth year, the guy said, "hey they haven't even opened this cleaning port" and he had to cut into the insulation to get to a drain pain that was filled with crap and rust already.
@paulswift5196 Жыл бұрын
That’s why I never hire anyone to do work on my house. I’m better off watching KZfaq and learning something new.
@paulswift5196 Жыл бұрын
My mom hired a guy to clean out her furnace. I just happened to stop over that day and I checked on the camera what he was doing. Watching baseball for 40 minutes banging on the side once and awhile. Lol.. it was great when he came upstairs and asked for 200$ told him to hit the road your on camera watching baseball bud.
@ThomasPatton-xk2os Ай бұрын
Charging 200 dollars per pound of Freon by 6 lbs 1200 $$ with out touching anything else
@conradlowther 4 жыл бұрын
Craig, great video. I purchased your book as well and it’s excellent. I do the same setup with one difference. I hook my service hose with ball valve to the side port on my second valve core tool. I leave the refrigerant bottle valve closed but my service hose valve open during final vacuum so that I am vacuuming the air out of my service hose. Then I close the valve on my service hose right before I turn off the vacuum pump and do a decay test. Then I isolate my vacuum gauge, open the valve on my refrigerant bottle, and use the valve on my service hose to throttle in the required charge. The advantage to me is I have pulled out some of the entrained air and moisture from my service hose by subjecting it to vacuum, and I don’t have to wonder how much air I purged out of the service hose using refrigerant to push it out, or lose any more refrigerant than necessary. There is also air between the valve on the service hose and the valve on the first core removal tool that is impossible to purge normally. I’m interested to hear what you think of this setup and if it makes sense or if there is a downside to the way I do it that I’m not thinking of. Thanks
@jawbrace 4 жыл бұрын
I love this guy. So smart and doesn't over complicate what he's doing. Kudos to you!
@acservicetechchannel 4 жыл бұрын
Thank you for your support!
@hotwort 4 жыл бұрын
Excellent! You are a great service to the HVAC Community Craig. Oh yeah your book is terrific, worth every penny.
@acservicetechchannel 4 жыл бұрын
Thank you very much Lester!
@sarathlallal4523 3 жыл бұрын
Wapp nu plzz sir
@andrewsimon5437 4 жыл бұрын
I just used this exact method with the exact two Appion valve core removal tools in order to install a 9000btu mini split. Even with the cheap harbor freight vacuum pump it pulled a great vacuum and held steady; I observed no leaks. As a homeowner I am excited to be able to do some of my own HVAC work. Thanks for these training videos. They are fascinating!
@shane2163 2 жыл бұрын
Until the epa shows up to your house lol
@andrewsimon5437 2 жыл бұрын
@@shane2163 so far so good
@LichaelMewis Жыл бұрын
Excellent, I'm doing the same and plan to install these for my neighbors for a lot cheaper than an HVAC "pro"!
@robertlamey7612 Жыл бұрын
Wish I was your neighbor I’d turn you in
@andrewsimon5437 Жыл бұрын
@@robertlamey7612 haha to whom, and for what?
@datadogie 4 жыл бұрын
The best tutorial I have seen. I was always concerned about those easy fit mini splits. If the lines are not pre gassed, but the compressor is then this explains a lot.
@abaidaramex2818 4 жыл бұрын
I have installed two zone system just after wactching your videos this was my first job. Thanks for sharing your knowladge
@acservicetechchannel 4 жыл бұрын
Thats great! Thank you for your support!
@richardcdldriver 4 жыл бұрын
Which mini split did you install?
@richardcdldriver 4 жыл бұрын
Which mini split did you install?
@channelcatchaser9426 4 жыл бұрын
I used the Spin Flair set on my last installation. It works perfectly! I would highly recommend it
@acservicetechchannel 4 жыл бұрын
Nice, thanks for letting me know!
@mariusfauru 3 жыл бұрын
Thank you for your awesome advices! HIGHLY APPRECIATED!!! 😎👍🍺 installed my 2 split units without problems after watching your videos! Super clear and simple!
@acservicetechchannel 3 жыл бұрын
Thanks a lot!
@martinheatingcoolingmartin4693 Жыл бұрын
This makes me happy and I look forward to my AC and heat pump unit work. It’s not so stressful when it’s simplified. I really want that book too. I plan on buying any other resources too. I appreciate the videos and knowledge you share, thank you!
@acservicetechchannel Жыл бұрын
Thank you so much!!!
@toddbehrends1373 4 жыл бұрын
Thank you for using your training and knowledge to help us "sometimers" be able to diagnose problems with our home systems so we have a better idea of the trouble when we call a tech to come fix it. Or it may be something that we could take care ourselves. Either way a better understanding of the systems and how they work is helpful.
@acservicetechchannel 4 жыл бұрын
Thanks a lot Todd and thanks for your support on Patreon!
@the1mainconnect 2 жыл бұрын
Right On Great Video. The wanted 700+ to do the final process of my Pioneer Mini Split process. I just built a mobile office from the frame up, I wasn't about to pay anyone for something so simple. I ordered the valve core removers and the vacuum gauge because hey you need quality instruments. I initially ordered a vacuum gauge and pump set off amazon. Big mistake. I couldn't get the vacuum to go under 1000 microns, kept chasing my tail, thought I had moisture in the new system, pump sounded awful too. Eventually ran and got a 2 stage 3CFM vacuum pump from harbor freight and used a line out of the kit to connect, still chased my tail for hours. Almost regretted taking it on myself. Then sat and thought there has to be an issue with the line because vacuum be going down and then up. Changed the vacuum line and bam it was headed in the right direction. Got it down to 160, went back in the morning and it held at 240. I know vacuum is a huge part of it so, I was happy. I didn't nitrogen pressure test. I know I should have but had to try to skimp due to funds. Also key note, in a 2 ton Pioneer mini split, both the liquid and vapor lines have access ports and they are switched from this video. Liquid line is on the bottom. In any case the process worked well and it is blowing cold and hot. Thanks for the detailed video and links!
@TheSkyclipper 4 жыл бұрын
Meticulous Instructions!! You have just displayed why it's important to have someone vacuum the lines - and to do it properly! Thank you! Awesome video!
@Theendlesssolitude 2 жыл бұрын
Clear, fast, detailed and directly to the point! Thanks for your detailed video!
@phlogistanjones2722 Жыл бұрын
Thank you so much for the clear and concise information. I appreciate that you took the time to both show and tell what you were doing and how it was done.
@Zafarella 2 жыл бұрын
Just wanted thank you for the material. You can add a table of contents for ease of navigation imho. Installed yesterday 2 modules using techniques you described.
@MJ-iy4fb 2 жыл бұрын
Great video, each time I watch this I get a little more info. This process was a little tricky getting right, thanks for clearing up the matter for me.
@scasinger123 Жыл бұрын
I love your videos. I installed a mini split but messed up one of the flare connections when I shortened the line set, and lost all of my refrigerant. After having several companies come out and give me ridiculously high bids, while berating me for trying to do "this kind of work" as a homeowner, I was fed up. Watched your whole series and learned so much. I realized that of the 4 ac techs that came out, not one knew how to properly evacuate, test and recharge a mini split correctly. And not one wanted to do super heat, saying, "There's no need to do that".
@wolfdale_3m Жыл бұрын
Well, to be fair, handling refrigerant when you're unlicensed is discouraged and even illegal in many places. What you just caused to the environment after letting all that refer into the air isn't something trivial. My take is that you can install the indoor and outdoor unit to your heart's content and then call an HVAC technician to assist you in the piping, leak testing, and charging of your system.
@scasinger123 Жыл бұрын
@@wolfdale_3m Ah, BS, BS and more BS. 2 of the techs that came out planned on letting the rest of the refrigerant out and weighing in the proper amount. I asked them if they used a recovery tanks and they both said something to the effect of "Nah. It's not enough to matter". As for "illegal in most places", two of the techs that came out weren't licensed HVAC contractors at all. They are working for an HVAC company under that license under "supervision". I don't know about the other two because I didn't get their full name. You should probably bone up on EPA regulations before trying spew nonsense. The whole HVAC industry is a racket. I just found a way around it.
@wenbin6312 4 жыл бұрын
Thanks for the great video for sharing on the steps to be done. In Singapore, most installation for mini-split doesn't use micron gauge like how you did in the video. 😞
@chriscermak3188 4 жыл бұрын
Another great video Craig. Thanks for explaining the 5/16 fitting.
@acservicetechchannel 4 жыл бұрын
Thanks Chris!
@stuzman52 4 жыл бұрын
Great step-by-step procedures Craig and keep up the good work!
@acservicetechchannel 4 жыл бұрын
Thanks a lot Stuzman!
@waltbe Жыл бұрын
There is good info in this video - thanks. Micron, as used here, seems to be a term of trade. As used here, as a unit of vacuum instead of distance, there are 1000 microns to a torr (1 torr= 1 mm Hg). Atmosphere is 760 torr or mm Hg.
@purejdmpassion 2 жыл бұрын
Very informative video. I do have a lroblem when doing a vacuum procedure. The vacuum pump vacuums to 200 microns but after 10 min it rises to 1000 microns. The flares are perfect and the system is new. Your help is deeply appreciated
@jenklingler8169 2 жыл бұрын
did you receive an answer? same boat here...two unit LGsystem with 70' of Lineset between the two. Two appion VCR tools, 1/2" appion vacuum hose, fresh JB oil in pump. Pulls tight down to 250 then after isolating the system it rises to 800 then down to 790 and holds. Nylog on the face of every flare in both the system and vacuum rig. Don't have access to nitrogen. Does it have to be 500 microns?
@MarcelHVAC 2 жыл бұрын
@@jenklingler8169 You will be fine as long as it stays under 2000 micron in 30 minutes
@paulcrescenti5581 4 жыл бұрын
I have not had to deal with an initial charge on any AC units. In a perfect world, my future AC guy would be as careful and precise with evacuation, charging, and startup as you are.
@johnlynes4453 4 жыл бұрын
HI Craig, your videos are the best I have seen. I love this set up because this is the only thing I do when it comes to HVAC, i.e., setting up new mini splits, and this set up eliminates the need for using a manifold gauge set which introduce more potential for leaks and contamination from oily gooey heavily used guage sets. Video request, please do one on the entire Nitrogen pressure test. Support Craigs VIDEOS, I bought all the tools with your links! One tool that I bought not on your list is the metric Master Cool mini split torque wrenches. (The line sets that come with the units are metric or SEA on the OD of the nut, but if you buy a set at a local supply house in the USA the OD on the nut will be SAE but the threads will be the same. Therefore, you would have to buy the Master Cool SAE set). One question, In a brand new system, If I am not adding any new refrigerent in, would I reinsert the valve core after I release the refrigerant from the compressor for the first time after isolating the micron gauge? Thanks again and everyone buy the tools from his links!
@acservicetechchannel 4 жыл бұрын
Thank you very much and you would add the valve core after there is positive refrigerant pressure in the system thanks!
@SnickasBah 4 жыл бұрын
I followed this step by step and did 2 Daikin units today. Thanks a million Craig. Weird how both supply houses near me didn’t have Nylog.
@jacarandamama7318 3 жыл бұрын
THANKYOUTHANKYOUTHANKYOU! Going to try this on my newly installed minisplit. Will let you know.
@AaronHadleigh 4 жыл бұрын
Great video mate,Subscribed. I worked for a union trained tech and can see you know your stuff.
@crowderglen Жыл бұрын
I am from the UK and a newbee to the air conditioning world. From the few people I've spoken to in the trade and from watching UK mini split installations on KZfaq, the trend here is that less than 4000 microns is an acceptable vacuum level. All of them are using a gauge set and 1/4" hoses. I've followed Craig's steps and my last vacuum achieved 280 microns on a mini split with a 4 metre line set length. This was measured with a Fieldpiece MG44 vacuum gauge and Navac 1/2" hose and Navac core removal tools. After the vacuum I found oil in the hose and wondered if this is normal?
@RangerCaptain11A 3 жыл бұрын
soon after installing my mini split (thank you for that), I had to move the indoor unit to a different wall, so I mounted the outdoor unit on wall stands. in the process of disassembly I unintentionally let out about 3 to 5 seconds of gas. after I reinstalled everything (thank you again), I ran the unit and the pressure was 55psi, so using the steps I added r410a with upside down bottle, til the pressure was about 110psi (i live in a cool area, about 84 degrees then). before and after, the unit was cooling properly. so is there an approximate running pressure? was my method ok or is removing the r410a, then adding by weight the only way to get the proper amount?
@robertdeming1802 4 жыл бұрын
Excellent video . Now I understand the basics of charging a mini split. Thanks!
@acservicetechchannel 4 жыл бұрын
Glad it was helpful!
@micmic9410 8 ай бұрын
You are amazing in detail. Buying my own tools to maintain my ductless installed. Had a 20 year hvac vet install my line sets and charge, 3 out of 5 leaked. Now he won’t come back after being paid- wants more money and had to call another company. They want about $1500 to do this. But I want to learn. These break downs affect the working class way more than people that have wealth. I saved 13k to get this done and this is what I got.
@Eddy63 4 жыл бұрын
You should write a book Craig ... Lol ... Great vid as usual ... Much appreciated ...
@acservicetechchannel 4 жыл бұрын
Ha ha, great idea!!!!
@alfredoandroid357 3 жыл бұрын
Thank you Thank you Thank you I follow your video and how to pressure test and vacuum, my system work out great . I didn't see a donate page or email address for me to send you a donation or tip via PayPal so I just brought your book on Amazon the $59.00 ac book . Thanks again appreciate the help .
@chodge8366 4 жыл бұрын
love the two valve removal tools in tandem. great idea!
@acservicetechchannel 4 жыл бұрын
Glad you like them!
@javierdomenech4370 4 жыл бұрын
Great I have one question I need to replace the condenser I have a doct in the house I'm not too satisfied with the inside unit I wonder could I install a mini split condenser to my HVAC so I could cool the entire house thanks
@egemensuzgun4208 3 жыл бұрын
i’m glad to see your using CPS gear, i’m about to buy CPS gauges and a 2 CFM vac pump
@catisleguy4291 2 жыл бұрын
I love your video's and they've been so helpful understanding everything. One problem I'm having is the valve removal tools that come with adapters for 5/16 or 1/4" seem to be too long to seat and I can't seem to get a vacuum? Can you recommend another option for a fitting? Thanks so much again!!
@mazarat4768 4 жыл бұрын
Great. I wish these materials were in Turkey. But even if he's here, it's too expensive. Your stuff's beautiful.
@acservicetechchannel 4 жыл бұрын
Glad you like them!
@robmedearis8700 2 жыл бұрын
If you are recharging the system after evacuation and vacuum do you recharge with the valves closed or open?
@sondiscus6791 4 жыл бұрын
hello, thanks for you video. May I know how many PSI do you do for the mini split pressure test? and what is the acceptable drop from PSI? Thanks
@divakaranvaradarajalu7782 3 жыл бұрын
Hi great video. It was usefull. I see u charge the system without openning the valves and the system in switched off state. How the refrigerant will go in when the compressor is not running and valve are not openened. Thanks
@BritishBulldog4 3 жыл бұрын
Hey, thanks for the informative video. Can I ask what you did with the refrigerant left in the hose from the bottle?
@bobrebera494 4 жыл бұрын
learning never gets old-good job
@acservicetechchannel 4 жыл бұрын
Absolutely! We are all learning all the time, thanks!
@bobbyhackett7359 4 жыл бұрын
Ayeeee Mr. Miyagi how have you been? It’s awesome that your still doing these videos
@acservicetechchannel 4 жыл бұрын
Hey Bobby, nice to hear from you! You can email me back at info@acservicetech.com so it doesn't get lost in the comment section. What are you up to nowadays? you doing ok?
@tonycrawford8147 4 жыл бұрын
i just bought this vacuum pump. and no instructions come with it. it shows the oil fill cap as the exhaust also. do i keep cap on or loosen oil fill cap or not?????
@keithwins 4 жыл бұрын
It's the little things... I really like how you show purging every little part of the system and the tools, really great. I am fascinated by how short a test it is though. I charge with Nitrogen to 400 lbs, and wait a while if I can. You only took 6 minutes (it took 4m to get to 340) in vacuum! I wouldn't have thought that was enough to be confident. Of course, time is money. Anyway, thanks so much for such a detailed video.
@acservicetechchannel 4 жыл бұрын
Vacuum time doesn't matter, only the vacuum level and I did a 10 minute standing vacuum test to verify true vacuum level, thanks!
@marcbraithwaite427 3 жыл бұрын
Question: I have a multi-zone mini split but only have one of the indoor units attached. The outdoor low pressure pipe was damaged and leaked while the valves were open. Does that mean I need to recharge the entire system? And if so, would I need to vacuum out the system with the valves open and charge it the same way? Any assistance would be appreciated.
@robcombs996 Жыл бұрын
Hello and great video! Thanks for making it! Quick question... I noticed that you used a single stage vacuum pump. Do you have any opinions on that vs a 2 stage pump? Is it important or worth it to pay extra for the 2 stage version? You seem so thorough so I figure you might have reasoned this decision before. Thanks again!
@armarra 3 жыл бұрын
that was well described, however the part where you blew out the air in the yellow line before connecting it to the lower junction wasn't at all clear that you had blown out all the air before screwing the yellow hose on. I'd have expected you'd wait until a bit of vapour was clearly visible then shut off the valve before connecting.. I wondered if this can be done with the twin gauge manifold commonly found on automotive air conditioning recharge setups.
@isldsnow 3 жыл бұрын
I'm sure my neighbors got tired of listening to this as I was looping this video while i was doing the job. Thanks
@OldFloatingSeaman 3 жыл бұрын
Same here. Been following all of their Videos and although i have purchased the F Gas manual, theirs is a must.
@martinguigou5313 4 жыл бұрын
Thank you for the tool list, I will order the books soon!
@acservicetechchannel 4 жыл бұрын
Great and please feel free to ask questions! The full outline of the book is available at www.acservicetech.com/ac-book thanks!
@steyer-crmg 2 жыл бұрын
Awesome video thanks! I always wondered what it meant to gas an aircon.
@roddeperalta4605 3 жыл бұрын
l just installed my gree multi unit mini split system got so excited .I bought all the the tools I need except the vacuum pump. I cut all the line set shorter then re flared them all. I turned the system on.it works for three days hot and cold works perfect until the next day the system won’t blow any hot air. What should I now?
@mgladden2 2 жыл бұрын
Great vids! No one has a video on removing part of the charge on a minisplit that has shorter lines than the built in charge was designed for. Can you please do one? I feel like it's just release the full charge into the lines, start the system, and slowly recover via the suction side of your manifold into a recovery tank while monitoring the scale until you reach the weight that matches the pre-charged weight minus the final weight your line length requires. Is that correct?
@themayorofairconditioning2868 Жыл бұрын
These videos are excellent. You're really a master of this stuff.
@sandysavard8030 Жыл бұрын
Hello , thanks for the great videos. Is there a way to isolate each line set in a quad line set system. Also when you pull a vacuum and hold it overnight should the vacuum go down at all due to temperatures outside? The reason I am doing this is because of a leak. I have the R410a taken out of system in a storage tank and do not know if i should even use this old r410a. If i had a leak in the system before would that have infected the stored /reclaimed R410A. Any help here would be greatly appreciated.
@da324 2 жыл бұрын
I installed a 9000 BTU Senville. A friend in the HVAC field came over to pull the vacuum. We're in Fl. and it's fairly warm right now, but his pump was a single stage and it took forever for the micro gauge to get down to around 300. Other than that, he used the same equipment and procedure as you. We ran the unit after we released the refrigerant and it is super quite and super cold. He left and is out of town, but I read that I need to run the heat at some point after initial set up for 5 minutes. I only had the unit on for about 2 hrs after initial set up on auto cool. Today, I turned it on and it was blowing cold quickly I switched the mode to heat and the fan shut off and the door on the front of the inside head unit closed halfway. I waited for a minute or so and went back to the other function and everything worked. All other functions on the remote work and everything is wired right, was hoping you may have some insight to why there's no heat? Thanks!
@cruisemates 2 жыл бұрын
I'm not a tech but I recall reading that it takes 5 minutes for the air to start blowing inside because the system needs time to reset the flow of the R410a so it is carrying heat to the indoor unit instead of cold.
@da324 2 жыл бұрын
@@cruisemates You're exactly right. I wasn't giving it enough time. Thanks
@markcaldwell1245 4 жыл бұрын
Excellent idea with the bubbles tester cap.
@acservicetechchannel 4 жыл бұрын
Thank you!
@craccky Жыл бұрын
Just wondering how much of that 2.3 ounces of referigerant could have gotten waste inside the hose instead of getting into the system. This becomes more substantial when you are adding the entire amount of referigerant, say after the previous one has leaked.
@WillieMakeit 4 жыл бұрын
Quick question why can we charge liquid in the low side on mini splits but we cant on split systems because of compressor flood back? Thanks
@brianho6625 3 жыл бұрын
Thank you for showing the detailed procedures for proper charging the split ac unit. I have a query for installation a brand new ac split unit as follows... 1. After connection the brand new liquid pipe and vapor pipe between the outside unit and inside unit, 2. the worker did not carry out (a) the pressure test and (b) sucking the vacuum for extracting air and moisture from the pressure hose. 3. Instead, the worker just release one of the valves at the external unit. 4. Then some refrigerant from the external unit and fill the pressure the pipe... I just wonder why (1) the labour did not carry out the pressure test and sucking vacuum for the newly installed pressure pipes. (2) the labour did not use charging refrigerant into the system from external tank. (3) the labour just release one of the valves at the outside unit. Then refrigerants come from the external unit itself and fill the pressure pipes (weired!!!). The system works for two years and still in chilling condition. As a layman, I am not in position for challenging the worker for omitting procedure (1) and (2) for a brand new split unit. As a professional trader, are you satisfying what the worker done? If not, what is your advice if you are the layman watching something seems wrong for above case? Thank you.
@Pinoyphilly 4 жыл бұрын
I can see another connector planted to your valve core remover to your Vacuum Gauge. Where can I buy the same? Thanks
@6thDAY 3 жыл бұрын
I have a pre-charged line set that has been vacuumed and filled with R-410a refrigerant from the factory, but I need to shorten its length. Once I'm done shortening the line set, and since the lines are factory pre-charged, is there anything special I need to do aside from vacuuming the lines and checking the microns before releasing the R-410a refrigerant from the condenser?
@mohaalgha3397 4 жыл бұрын
Waleed7rrag RRAG I do thank you very much for your excellent instructions and great detailed explanations. You are always during your videos answering all the what, why, how and what not to do with great details and explanations. Having said that, I know you are very busy but if you would please answer a few questions about the mini split AC: 1. As you know the mini split AC of all brands and kind has no high side shredder valve and I do not know why, so is it good idea to install one out side the system near the low side shredder valve? 2. I have a mini split AC under full maintenance including a leak repair on the condenser, as you know the metering device is just at the end of the condenser going to the evaporator, in this case is it OK to feed nitrogen gas from the low side all the way to the condenser to test the condenser leak repair? will nitrogen pass through metering device? and if so will it affect the metering device and or the high side of the compressor? 3. After doing system and line set vacuuming, is their a need to add 2 ounces or may be less of a compressor oil? I can not find any sold information on this issue? Last but not least, thank you very much for teaching and helping so many people not just in the U.S.A. but around the globe as well!!!
@renatolopez6348 3 жыл бұрын
Hi sir I have question regarding split a/c, how and what procedure to refill oil at compressor, already finish solded the crack of high side pipe ,I need now to charge oil around 1/2 liters coz compressor coming sound
@user-ff9ms7uh8h Жыл бұрын
I would have liked to see you include an inspection of all hose seals (o-rings) in every connection and oil them as needed.
@wbriggs111 4 жыл бұрын
That was good but what about the 410 that was weigh out and still in the yellow hose that never got in the system?
@samersarah957 2 жыл бұрын
Thank you Craig for informative video. When adding refrigerant R22 is possible to add as liquid while the unit is not working and if it’s working should go with vapor? Thanks.🌺
@LLl-hh3qy 2 жыл бұрын
You are telling that by removing the valve core you get a faster and deeper vacuum. I understand that it is faster but why deeper? Waiting long enough should lead to same results. Or am I wrong? Great video, so on point and clear.
@michaelc5378 4 жыл бұрын
Could you use a simple ball valve in front of the micron gauge instead of a secondary valve core removal tool? I noticed that my valve core removal tool has pin valve on the service port. Can that be removed? I’m guessing it will slow down the vacuum if left in?
@ffsteel111 Жыл бұрын
Amazing video thank you . On a mini split dual zone do I need to vacuume both vapor port sides ? Or just one side
@Hammer757 2 жыл бұрын
Craig, what is the procedure to replace the refrigerant in a mini splits system. for instance if you have to recover all the refrigerant in a mini split system, complete repairs and them recharge. Every procedure I find only addresses adding refrigerant when additional line set is required. Thanks. PS I have your course/manual and have learned so much from it.
@bobzhou9166 4 жыл бұрын
Great video, what's the small valve tool name? where can I buy them, thank you.
@user-kt2hb8xr3p 4 жыл бұрын
شكرا اخي انته حقا مبدع في عملك
@acservicetechchannel 4 жыл бұрын
اقدر تعليقاتك I appreciate your comments!
@abhinavgaur13 3 жыл бұрын
Q1) I purchased a Mitsubishi MUZ GE 24NA (2 tonne) heat pump unit. In its installation manual, it just mentions the vaccume testing but doesn't mention pressure testing. Can you think of any reasons for such an omission? Q2) Could you please also add a video on Nitrogen pressure testing of mini split units? Would it be same as in the case of regular HVAC system as you have shown in another video?
@717273mopar 11 ай бұрын
Great Video, I am about to install my mini split system and even though I have many HVAC tools I don't have a nitrogen bottle to test for leaks, I would need a bottle and gauges which I would only use once. Can I just vacuum to check for leaks?
@Dan-pm5vn 3 жыл бұрын
Hi Craig, Thanks for all your great help with all these videos ! I have your book as well. As a DIYer of a 30000 btu Mitsubishi unit , it calls for the final vacuum to 500 mic your book states to follow the manufacturers guidelines . Would like your input on this matter before I pull it down to 300 microns
@speckulator7516 3 жыл бұрын
I know this is old and I’m not Craig but the lower the vacuum the better. What they mean is anything below 500 microns.
@MrIonutz2008 3 ай бұрын
Hi, i have a recovered almost new AC035RXADKG unit empty of r32 refrigerant. Is there a way that can be filled with refrigerant without being connected to a inside unit ? Thank you.
@saveriotranquilli929 Ай бұрын
This video is amazing! Thank you! Is the same procedure also valid also for a multi split with branch box?
@EvanEdstrom 4 жыл бұрын
Very educational, thank you. Two questions: 1- You shut off the valve so fast when purging air out of the refrigerant bottle hose, it's hard to tell what you are doing. Does it stop hissing when the refrigerant hits the valve or is there something else you are looking/listening for? 2- What do you do with the extra refrigerant in the hose once you are finished with the job?
@DevLSerg 4 жыл бұрын
What you can basically do is let a little bit of refrigerant out(liquid form ) it’s whitish, as soon as you see a little you shut the valve off. You do this so no moisture goes inside the line set. And If its just a little just air it out.
@jameswestii454 3 жыл бұрын
What’s the recommended pressure for a nitrogen leak test on a 17 series Daiken 12,000 btu ductless system? I can’t seem to find it in the manual anywhere. Keep hearing 550 lbs but that seems high to me, maybe not. THANK YOU.
@stebarg 2 жыл бұрын
Great stuff!!! Almost perfect! The best description I've seen so far.
@ryansmith9283 4 жыл бұрын
How come the microns rose from 190 to 340 how long do you leave to equalize ? Before you take a reading to insure it doesn’t go any higher than another 100 microns ?
@asdreww 3 жыл бұрын
Great video. Quick question - how would you recommend charging/topping up a system where you don't have exact specs of refrigerant you need to add? My evaporator outlet temps are around 15 oC with a room temp of 22oC, so not very 'cold' & I suspect it's because the precharge refrigerant wasn't sufficient.
@Oneiropsithiristis 2 жыл бұрын
An easy way to charge a system while is running is checking simultaneously the compressor's amperage until you get the nominal full load amps.
@alexswall9411 3 жыл бұрын
What would case oil to be in my vacuum hose after pulling a vacuum? I use the 1/2 inch appoin hoses
@matttzzz2 3 жыл бұрын
I tried putting the shrader back in today but the valve core removal tool snapped off and I lost all the gas in the system, will cost me $100 to replace the gas, nevermind the headache, time and labour wasted. The tool cost $30 off eBay, is it worth buying the one you have for like x5 times the price?
@PLVtv 4 жыл бұрын
Thank you very much for your time and effort
@acservicetechchannel 4 жыл бұрын
Glad to help!
@jamesmabry2261 2 жыл бұрын
This is apparently for new systems. What about older systems that may need a flair fitting fixed? Would you recover refrigerate back into the unit, fix flair fittings and then do the exact same procedure? What about if the existing refrigerate is low from a leak and you fix leak, then instead of pulling the refrigerate back into unit, do you start from scratch and weigh in recommended amount of refrigerate?
@jameswestii454 2 жыл бұрын
Did my nitrogen pressure/leak test for 1 hour and used bubble leak detector and pressures held perfect. Released nitrogen and hooked up both Appion valves as normal with this code exact Micron guage. Started evacuation and itv pulled down to roughly 170 microns. Turned off pump and micron guage jumped to 4760 microns then started to come down. No idea what’s going on. Simple install with nothing unusual. Changing oil in pump which was new after last install to just cover that. Using exact parts as in this video. Any ideas what could be going on? Help!!!!!
@jonathanraul4086 4 жыл бұрын
Thank you nice video what are pressures supposed to be on a mini split in heat and what are pressure supposed to be on AC on a Mini Split for 410
@acservicetechchannel 4 жыл бұрын
Jonathan, I just wrote a full length article on that today! Check it out at www.acservicetech.com/articles
@stevehensyel2940 2 жыл бұрын
Question, does the line set need to always stay higher than where they connect to the compressor? I am wanting to run them down and underneath a trailer and then back up into the floor ( a "U" shape )
@michaelcostello6991 3 жыл бұрын
When you vented the air out of yellow charging hose was it then full of liquid before you started charging the system ? If there was vapor still in the yellow hose you might not be charging the system properly as some of the liquid refrigerant you are weighting might just be filling the yellow hose. I am a newbie and have never done this. Please explain. Also what did you do with the yellow hose full of liquid. Should you have throttled it at the gas bottle valve so there would only ever be vapor in the yellow hose ? Again i have never done this and i am not suggesting that you could do anything better. Thanks very much for this video. It was really great.
@jimbola77 4 жыл бұрын
love the book partner! very informative.
@acservicetechchannel 4 жыл бұрын
Thanks a lot!
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