These are secrets of the trade, can’t show noobies right off the bat about tank/stool... I still want to laugh at the noobs that buy those mini stools when I visit the suppliers!...
You can bleed hoses into the system quite simply, it just takes a bit of planning. As you are getting close to the end charge, turn off the tank and add only refrigerant from the hoses. If you need a bit more, just feed from a hose full of refrigerant at a time until the charge is set. Nice set up having all the T and P inputs at your fingertips on the laptop. The old saying - if it was easy anyone could do it - will now be - with Jim's system, anyone CAN do it. LOL
Cool set up man....nice to see other master technicians taking time to help somebody else. I see a lot of installation mistakes with them z coils man....
Great video Jim. Would like your thoughts of the importance of using a liquid low side charger when charging R410a in liquid through the suction valve. I've heard various opinions on it and would like to get that of a certified badass. Thanks again for all your doing to progress our industry!
Please show us how to do the electrical in the app. I know how to do condenser fan but not evaporator fan and please explain power factor. I'm sorry I just love the knowledge you share with us for free thank you 🙏🏽
@@chrisbentley9615 Chris you can tell the type of metering device by blocking off the condenser air flow raising the head pressure . On a fixed orifice pressure and superheat are affected greatly. Where as a TXV not so much it Maintains the superheat,and to a great deal pressure is not as responsive. Just a big Tech Tip!!!
20:15 "make sure you have good airflow-" Since this is a test setup, you made no mention about restrictive ductwork. In a field test, static pressure probes could supply information about the system external static pressure. This should have been mentioned and explained. Otherwise, it was a great presentation.
Obviously u Master HVAC man u have fancy equipment not for beginners or people trying done ac work thanks for share u video but I lost my way after 2 minutes into video
Love the app. Use it everyday. Looked like your txv bulb was contacting the liquid line under that rag. Probably why the valve is wide open giving lower sh.
Also man 20 minutes of charging. Usually takes me about an hour on Goodman/Amana. That’s what we install. I’ve seen from start up a charge go from .5 subcool all the way to 8 (recommended subcool) after sitting for 45 minutes watching the thing slowly climb.
You can't because of the inverter. The unit will ramp up based on what it feels (with the thermistors). It would be very difficult to charge a system based of your gauge pressure.
Thank you for the video. I am still getting familiar with mQ. I love it though. I would like to see a video of charging a heat pump during winter. A real one and using mQ.
@@measureQuick Yes, I went by the manufacturer's table at 25°F OT. I got it as close as I could. Schrader cores were loose and I lost some Refrigerant. I am still monitoring. I have all the probes now in order to keep measuring. However, the videos I have seen so far, are not as informative as I would like. Goodman just tells you to get the SH at 5°F. I will keep measuring and wait till summer time.
@@CHOMAHOMA So that would likely be superheat controlled by the outdoor metering device. Make sure that you are measuring on the true suction between the reversing valve and compressor for both temperature and pressure. Add gas very slowly if you have an accumulator.
@@measureQuick OK. It is a pain to get to the Suction line to take the temperature with the probe. Trane units are the best considering that aspect. Thank you for your advice.
He purged the hose...but he didn’t have the tank open, hard to imagine he really purged the hose that way....and I didn’t see him purge it when he opened the tank
Sight Glasses are a normal component used in REFRIGERATION and AIR CONDITIONING commercially. I think they would help if used more in RESIDENTIAL use also....
Thanks a lot Jim for such video, Can you please tell me what kind of temperature sensors we need to connect with this app and how these sensors will connect? By Bluetooth? Please tell me where from i can purchase?
wouldnt such a low superheat indicate liquid refrigerant returning back to the compressor? which in turn would shorten the life of the compressor, location of the txv bulb should be corrected from being so close to the liquid line and of course insulated.
To decrease refrigerant loss in your charging hose how about putting the valve end on the tank rather than the service port? You could still use the box as a seat (LOL).
cashion556, If the charging hose was reversed, you would not be able to depress the Schrader core at the service valve; you would also not be able to get any refrigerant for the same reason (that you may have figured out by now). The end at the tank does not have a core depressor, while the end at the valve does.
I saw a different video where a trained tech said to always charge with gas (tank upright).. are some refrigerants best to charge with gas versus others with liquid? Also, although you had tank upside down and said this was intentional to charge with liquid, several times you mentioned that you were charging with gas. Could you please clarify the confusion?
A lot of techs will refer to refrigerant as gas, in the same way its commonly referred to as freon. He does not mean that he is adding the refrigerant in its gaseous form, he is just calling the refrigerant "gas". R22, the previous most common refrigerant for residential systems could be added as a gas no problem (this is also were the name "gas" most likely came from). Adding as a gas is "safer" because you wont slug the compressor with liquid by mistake. BUT, it is significantly slower to charge as a gas. You can charge any refrigerant as a liquid, as long as you use your hose valve, or manifold to meter the flow into the system. this is done by only opening the valve or manifold a little bit. As long as you are careful, you will be fine, and you will eventually develop a feel for it. I do not think there are any refrigerants that are "best" charged as a gas. some refrigerants MUST be charged as a liquid, like 410A, 407C, and any blended refrigerant. Ones like R22 are not blends. Blended refrigerants need to be charged as a liquid to prevent the different chemicals from entering the system at different rates. If you look on the bottle of refrigerant you will often see big arrows pointing to the bottom or top. The arrows tell you what end needs to be up during charging. A lot of them will even just write it on the bottle itself.
Mr G.B . How much refrigerant will be in the yellow hose ? If you put the remaining refrigerant that the yellow hose contain. How much the SC will be increasing and what happens to the SH? Thank you!🍻😉
José Cruz I never recommend emptying out what’s in the hoses into the system. What’s in the system is in the system adding anything else will just create an overcharge. Any more a few ounces can make a big difference.
I don't see the liquid to vapor quick tube is installed on the blue/vapor side while charging the unit, how can the host charge the refrigerant so fast without stop every 2-4 seconds ? or it does not matter too much in reality ? anyone know ? thanks
If using the auto capture feature for electrical measurements, how do you get a proper reading on a blower with the door closed/on? In your test set up, no issue with the wire sticking out, but in real world that's not possible.
An air handler you could measure from the disconnect. A furnace you can measure from the burner panel where the main wire comes in. For most anyway. Or you can put the meter in with the blower and read numbers via bluetooth
@@CombatFIFChuck You can stream the numbers via bluetooth and then manually input them, but you can't auto capture them. Not sure how you measure at the disconnect for an air handler, unless you have an external disconnect.
good informative video, but you flush your refrigerant hose, wish you should do. But your shout off valve as a 1 foot hose extension to it that still got air in it. So you had none condensable into your heat pump. That 1 foot hose got some air in after flushing your hose, which there no shut off at the end of that hose, that absorb air after flushing?? Plus your evaporator panels is open, wish is affecting your charging an your super heat. OUTCH......
Not necessarily, with tools like measureQuick the design temperature differences are calculated and we can diagnose problems at much lower temperatures. You can easily work at temperatures between 55 and 65° with confidence.
Great video, I use Measurequick everyday. Hardest part I have up north in Canada is charging a system without a decent load. Majority of the time our return air is hovering areound 68-71. Can you leave the 410 bottle upright if the tank is equipped with a liquid valve wth a dip tube taking liquid from the bottom?
Joe Shearer up here in Canada that’s all we have. We never flip our 410 bottles when charging because we have the liquid valve that pulls from the bottom
Maui Kawi opening the ball valve pushes the air out of the ball valve all the way to the service port. There is no need to purge again or the other direction. The unit has a tee with a schrader.
@@mauikawi4290 Might want to show a little respect and consider the possibility that Jim knows a little more than you do. I suspect that he is saying that the rate of diffusion of the atmosphere back into the hose, and the rate of diffusion of the refrigerant out of the hose, when both are at equal pressures, is small enough in the short amount of time that it takes to attach the hose, that it is negligible. If you're worried about it, bleed it again once you've got the hose attached.
I love his videos but (due to time constraint) he has to leave out some important facts. Like when charging a system with a mixed refrigerants (like R410a) you have to allow 30 minutes for it to stabilize every time you add or remove refrigerant. But I understand his points.
Who told you that? 15 minutes at most. If you are talking a heat pump with an accumulator that makes sense, but for straight cooling it 30 minutes is excessive.
![Best Practices for Charging A System [2024 Version]](http://i.ytimg.com/vi/JqqHK3H7bxg/mqdefault.jpg)
This video shows just how complicated it is to charge a system correctly. Thank you very much
I think the key take-away here is that you can use an inverted 410a tank as a stool.
Lol 😂
A/C 101 😄
These are secrets of the trade, can’t show noobies right off the bat about tank/stool... I still want to laugh at the noobs that buy those mini stools when I visit the suppliers!...
😆.. I do it all the time!!
😂
You can bleed hoses into the system quite simply, it just takes a bit of planning. As you are getting close to the end charge, turn off the tank and add only refrigerant from the hoses. If you need a bit more, just feed from a hose full of refrigerant at a time until the charge is set. Nice set up having all the T and P inputs at your fingertips on the laptop. The old saying - if it was easy anyone could do it - will now be - with Jim's system, anyone CAN do it. LOL
Cool set up man....nice to see other master technicians taking time to help somebody else. I see a lot of installation mistakes with them z coils man....
Your equipment setup are real high-tech must be quite expensive but that makes your work much easier
You remembered my Maestro . He was good. You did a good job .
This video contains excellent information and good schooling.
Great video Jim. Would like your thoughts of the importance of using a liquid low side charger when charging R410a in liquid through the suction valve. I've heard various opinions on it and would like to get that of a certified badass. Thanks again for all your doing to progress our industry!
They work fine. If you listen to the system and add gas slow you can get away without it.
Also make sure you have right airflow. Fan speed plays a part too 😀
Please show us how to do the electrical in the app. I know how to do condenser fan but not evaporator fan and please explain power factor. I'm sorry I just love the knowledge you share with us for free thank you 🙏🏽
Plexiglass evaporator cabinets should be mandatory!!
dave johnsonnola no doubt or maybe HVAC x-ray vision tools. Inspection cameras are great peeking in the EC to identify the metering device 😊
Yes exspecially with these N coils, a lot of installer errors
@@mychoclabwinston very true!!!
@@chrisbentley9615 Chris you can tell the type of metering device by blocking off the condenser air flow raising the head pressure . On a fixed orifice pressure and superheat are affected greatly. Where as a TXV not so much it Maintains the superheat,and to a great deal pressure is not as responsive. Just a big Tech Tip!!!
Wow! I hope they will build glass box for our AC system like this in the future
Good video thank you very much for your teaching
20:15 "make sure you have good airflow-" Since this is a test setup, you made no mention about restrictive ductwork. In a field test, static pressure probes could supply information about the system external static pressure. This should have been mentioned and explained. Otherwise, it was a great presentation.
We made an updated version that addresses that. Thanks for the feedback!
ua-cam.com/video/JqqHK3H7bxg/v-deo.htmlsi=uYR0MFJNTrSQVET_
Great video. Well presented and very informative. Thank you!!
Obviously u Master HVAC man u have fancy equipment not for beginners or people trying done ac work thanks for share u video but I lost my way after 2 minutes into video
It is very much made for beginners, all you need to do is properly place the probes. MeasureQuick will do the calculations and diagnostics for you.
Love the app. Use it everyday. Looked like your txv bulb was contacting the liquid line under that rag. Probably why the valve is wide open giving lower sh.
You purged your hose to the ball valve but what about air from the ball valve to the service tee?
Dave brooklyn opening the ball valve pushes refrigerant all the way through the hose. The connection tee has a schrader.
You got to love JIM😜
Can you do a video on start up of a heat pump in the winter time using the Fieldpiece probes and measurequick please.
I agree had a hell of a time trying to use measure quick on a heat pump in the winter time.
Also man 20 minutes of charging. Usually takes me about an hour on Goodman/Amana. That’s what we install. I’ve seen from start up a charge go from .5 subcool all the way to 8 (recommended subcool) after sitting for 45 minutes watching the thing slowly climb.
hey jim great video learn so much in all your trainings. question mini split a/c units can you the measure quick to charge?
i see bergman never answered your question
You can't because of the inverter. The unit will ramp up based on what it feels (with the thermistors). It would be very difficult to charge a system based of your gauge pressure.
Thank you for the video. I am still getting familiar with mQ. I love it though. I would like to see a video of charging a heat pump during winter. A real one and using mQ.
You can only go by the manufacturer’s guidelines and get it close. Heat pumps always need to be charged in cooling for the most accuracy.
@@measureQuick Yes, I went by the manufacturer's table at 25°F OT. I got it as close as I could. Schrader cores were loose and I lost some Refrigerant. I am still monitoring. I have all the probes now in order to keep measuring. However, the videos I have seen so far, are not as informative as I would like.
Goodman just tells you to get the SH at 5°F. I will keep measuring and wait till summer time.
@@CHOMAHOMA So that would likely be superheat controlled by the outdoor metering device. Make sure that you are measuring on the true suction between the reversing valve and compressor for both temperature and pressure. Add gas very slowly if you have an accumulator.
@@measureQuick OK. It is a pain to get to the Suction line to take the temperature with the probe. Trane units are the best considering that aspect.
Thank you for your advice.
He purged the hose...but he didn’t have the tank open, hard to imagine he really purged the hose that way....and I didn’t see him purge it when he opened the tank
Watch it again, it was purged. I just checked it myself, not something I would typically miss
Hi Jim, please make a video about proper charging of a mini split system. Thank you
Charge to weight is the only real way for a mini-split.
Very nice video
Sight Glasses are a normal component used in REFRIGERATION and AIR CONDITIONING commercially. I think they would help if used more in RESIDENTIAL use also....
Us resi installer hacks would break them
Thanks a lot Jim for such video,
Can you please tell me what kind of temperature sensors we need to connect with this app and how these sensors will connect?
By Bluetooth?
Please tell me where from i can purchase?
HVAC tech goes high tech with computer digital data. Nice
Question: I do AC installs and if I have a line set that i know that I gotta add gas. Do I add before before I start it up or after it’s running ?
@@kevinpearce3281 depends, if is a long one, dump gas in the liquid line before you start it. If not, start it up and finalize the charging process.
Great info! 😎👍
Question Jim , would an air flow issue ever cause a site glass to bubble resembling a low charge ?
It could if charge migrated to the evaporator.
wouldnt such a low superheat indicate liquid refrigerant returning back to the compressor? which in turn would shorten the life of the compressor, location of the txv bulb should be corrected from being so close to the liquid line and of course insulated.
11:47 - What is the material of your sight "glass" so that it is capable of withstanding the pressures of 410a? Quartz? Pyrex?
To decrease refrigerant loss in your charging hose how about putting the valve end on the tank rather than the service port? You could still use the box as a seat (LOL).
cashion556, If the charging hose was reversed, you would not be able to depress the Schrader core at the service valve; you would also not be able to get any refrigerant for the same reason (that you may have figured out by now). The end at the tank does not have a core depressor, while the end at the valve does.
I saw a different video where a trained tech said to always charge with gas (tank upright).. are some refrigerants best to charge with gas versus others with liquid? Also, although you had tank upside down and said this was intentional to charge with liquid, several times you mentioned that you were charging with gas. Could you please clarify the confusion?
A lot of techs will refer to refrigerant as gas, in the same way its commonly referred to as freon. He does not mean that he is adding the refrigerant in its gaseous form, he is just calling the refrigerant "gas".
R22, the previous most common refrigerant for residential systems could be added as a gas no problem (this is also were the name "gas" most likely came from). Adding as a gas is "safer" because you wont slug the compressor with liquid by mistake. BUT, it is significantly slower to charge as a gas. You can charge any refrigerant as a liquid, as long as you use your hose valve, or manifold to meter the flow into the system. this is done by only opening the valve or manifold a little bit. As long as you are careful, you will be fine, and you will eventually develop a feel for it.
I do not think there are any refrigerants that are "best" charged as a gas. some refrigerants MUST be charged as a liquid, like 410A, 407C, and any blended refrigerant. Ones like R22 are not blends.
Blended refrigerants need to be charged as a liquid to prevent the different chemicals from entering the system at different rates.
If you look on the bottle of refrigerant you will often see big arrows pointing to the bottom or top. The arrows tell you what end needs to be up during charging. A lot of them will even just write it on the bottle itself.
good job
Mr G.B . How much refrigerant will be in the yellow hose ?
If you put the remaining refrigerant that the yellow hose contain. How much the SC will be increasing and what happens to the SH?
Thank you!🍻😉
José Cruz I never recommend emptying out what’s in the hoses into the system. What’s in the system is in the system adding anything else will just create an overcharge. Any more a few ounces can make a big difference.
@@measureQuick how do you recommend emptying the hoses? Dump to atmosphere? Set up for recovery just for hoses?
7:18 to 7:21 you lost me there what do you mean by it’s an oversized evaporator coil it’s got a ton and half evaporator coil with a 2 ton evaporator?
Yes
Jim, if it is low on gas wouldn't you have check for a leak or leaks as well before you charge it, which really is a recharge?
Nope, I am testing it all the time, it looses gas from frequent testing
Hey Jim what brand is that beautiful sight glass?
It’s custom made with Pyrex glass and protected with a polycarbonate cover.
@@measureQuick Oh that makes sense.
Thanks Mr
Why do we charge a system through the Vapor line?
I don't see the liquid to vapor quick tube is installed on the blue/vapor side while charging the unit, how can the host charge the refrigerant so fast without stop every 2-4 seconds ? or it does not matter too much in reality ? anyone know ? thanks
As long as you are not feeding in the liquid to fast it will not cause any damage to the compressor.
If using the auto capture feature for electrical measurements, how do you get a proper reading on a blower with the door closed/on? In your test set up, no issue with the wire sticking out, but in real world that's not possible.
pull a bit of the wire you wanna take amp draw on up through a hole into the furnace cabinet, works great
@@davidjenkins4838
Not possible on any air handler I have worked on. Furnaces, maybe.
An air handler you could measure from the disconnect. A furnace you can measure from the burner panel where the main wire comes in. For most anyway.
Or you can put the meter in with the blower and read numbers via bluetooth
@@CombatFIFChuck
You can stream the numbers via bluetooth and then manually input them, but you can't auto capture them.
Not sure how you measure at the disconnect for an air handler, unless you have an external disconnect.
good informative video, but you flush your refrigerant hose, wish you should do. But your shout off valve as a 1 foot hose extension to it that still got air in it. So you had none condensable into your heat pump. That 1 foot hose got some air in after flushing your hose, which there no shut off at the end of that hose, that absorb air after flushing?? Plus your evaporator panels is open, wish is affecting your charging an your super heat. OUTCH......
The hose was purged at 4:30. There were no non-condensibles added to the system. The evaporator has a plexiglass cover for training. It is not open.
Hey Jim can you tell me why testo550 wouldn’t stabilize on EV numbers just go’s up & down
G GRIM RIPPER the TXV is modulating open and closed. Not quite “hunting” but modulation between about 7-10 degrees of superheat if I remember.
does measureQuick require an internet connection to use? Could a samsung galaxy s8 connect to multiple probes at once?
Nanda Davis no internet connection required to use and it can be connected to multiple probes. Even different manufacturers at the same time.
What is the grey rectangular looking device with the flashing light on the side of the box containing the electrical components?
Tom Thumb that is the outdoor part of a Sensi Predict system.
What kind of air filter have you been installing? Pleated or non pleated?
That is a 1” pleated.
Is it true that to properly diagnose an AC unit the outside temp must be warn or hot?
Not necessarily, with tools like measureQuick the design temperature differences are calculated and we can diagnose problems at much lower temperatures. You can easily work at temperatures between 55 and 65° with confidence.
Great video, I use Measurequick everyday. Hardest part I have up north in Canada is charging a system without a decent load. Majority of the time our return air is hovering areound 68-71. Can you leave the 410 bottle upright if the tank is equipped with a liquid valve wth a dip tube taking liquid from the bottom?
Cory Desormeaux have you ever seen one with a dip tube?
Low load is a headache, especially with low airflow too.
Joe Shearer up here in Canada that’s all we have. We never flip our 410 bottles when charging because we have the liquid valve that pulls from the bottom
Cory Desormeaux Wow here in the states I’ve never seen a bottle with a dip tube.
Hey do you guys hire technicians from other countries who are willing to migrate.
Also with measurequick
Are liquid charging adapters worth it?
Ken Marriott not needed, just throttle it in slowly. Scrolls are pretty durable also.
Thanks
you failed to purge your hose properly, you purged to the ball valve and then didnt purge the hose to the service port. good vid though
Maui Kawi opening the ball valve pushes the air out of the ball valve all the way to the service port. There is no need to purge again or the other direction. The unit has a tee with a schrader.
@@measureQuick
You are saying that the short hose after the ball valve, with no low loss fitting on it like you have, is not open to atmosphere?
Tom Thumb yes, I pushed the atmosphere out with refrigerant. The air pushed out, the atmosphere will not enter the hose quickly.
@@measureQuick no
@@mauikawi4290 Might want to show a little respect and consider the possibility that Jim knows a little more than you do. I suspect that he is saying that the rate of diffusion of the atmosphere back into the hose, and the rate of diffusion of the refrigerant out of the hose, when both are at equal pressures, is small enough in the short amount of time that it takes to attach the hose, that it is negligible. If you're worried about it, bleed it again once you've got the hose attached.
Would you post ordering information for that charging tee fitting you're using? The Appion CTEE14 is pretty pricey.
Supco Charging Tee CTEE14
Using ang a fieldpiece probes.
Just a home person watching...it seems impossible to access evaporator coils as necessary; inspection is one thing, cleaning is impossible.
Yes, they are a huge pain and usually goopped up because they leak air otherwise. I try to rule out everything else before diving into an evap coil
I love his videos but (due to time constraint) he has to leave out some important facts. Like when charging a system with a mixed refrigerants (like R410a) you have to allow 30 minutes for it to stabilize every time you add or remove refrigerant. But I understand his points.
Who told you that? 15 minutes at most. If you are talking a heat pump with an accumulator that makes sense, but for straight cooling it 30 minutes is excessive.
What's the name of the app sir?
geloh DomRac MeasureQuick HVAC
None the A C technician the I hire done that
I think this video is made to discourage DIY.