Thank you! I need to set one up. You can get sh with 2 thermometers. It's a little more difficult with SC but you can use approachethod in place of it. Bryan Orr has an article on that. A thermal camera has great benefits but due to emissivity of the coils it doesn't give an accurate enough temperature. Measure quick does have the ability to check a system charge without attaching gages also

I will have to done check pretty sure I bled the charge bose threw the suction side then opened the high side and drained it to the suction side and lifter the hoses so any liquid would drain in. The also lifted the suction hose so any potential traped liquid would flow in. It's possible it got deleted by acadent but I remember seeing it during the edit. Editing is my biggest pain. I will look tonight when I get off work.

@@love2hvac Thank you Ty and I know about editing as I do one video for my students at my pastor's house, it is a pain. Keep up the great work. :)

Ductless mini splits have very specific charging procedures. Usually they require charge by weight. But you have to follow that specific manufactures method. Reusing a flare is risky. Reusing a flare is best done with a type of flare gasket.

It will not perform any better. It could end up with more system wear and higher pressures and lower performance. In heat pump mode the system uses less refrigerant so a higher subcooling could end up flooding the systems. Stay within the manufactures specifications.

It means it's outside of design conditions. With that metering device and those conditions it should not be run because the superheat will be too low and can cause compressor damage. That is why the TXV is sooooooooo important in that climate. I talked to one contractor in Vegas that uses fixed offices just so the units won't last as long.

Ok so would you recommend doing when charging a unit with a piston and the target superheat is outside of designed conditions? Thanks for the reply!!

@@love2hvac what*

Charge to 5 superheat. Never less

Great question. With it running 1st, we can only get it into the suction side. If I was to open the high side it would not flow because the compressor in the system has raised the pressure higher than the pressure in the tank. Now that I can only put it in the low side, and it has to be liquid (400 series) I throttle it in, very small amounts at a time That give it time to flash or boil into a vapor while in the hosees, manifold, connection, and large volume suction line. By the time it gets to the compressor it is a vapor. If I was to open the valve for to long, I would get liquid to the compressor. If I was to put it in the suction side with the system off, I would damage the compressor.

@@love2hvac thanks

@@love2hvac Hi, I have a quick question. I'm wondering how that liquid 410a refrigerant turn into vapor through hosees, manifold, connection, and large volume suction line. what is reason beyond it? I get that large volume suction line means low pressure and it drops boiling point lower but I still don't get what exact reason makes this liquid refrigerant become vapor through this process. and I have another question that how come 410a refrigerant can keep both liquid and vapor state in tank with ambient (atmosphere) temperature although it has extremly low boiling point. shouldn't it be only vapor in tank since our atmosphere temperature can't be -55.3°F mostly. I would appreciate it if you could answer my quesitons, thank you

Mine is not blue tooth. Its just wireless to the digital display. It was when they first came out but when it lowers off it shows where if left off even if it's weeks between use. Good to know about the blue tooth.

@@love2hvac yes wireless but I believe they use the Bluetooth frequency range It was OK when it re-capture signal and has held on and recorded the weight But after the third time of losing the weight in the middle of charging that’s when I mothballed it and only keep it as a secondary back up scale in emergency. With the NAVAC scale I have not had that problem

Throttle it in. I expand this in the playlist series in great detail. Open and close the valve in very small increments, it lets a little burst of liquid into the hose and allows that liquid to expand and boil into a vapor before it reaches the compressor. The liquid line is higher pressure than the tank. Physics will not allow the pressure of the tank to overcome the high pressure of the system to charge. If it was not for the check valve in the tank liquid from the unit would leave and enter the tank because of the pressure difference.

oh.... you charged it as a vapor, why? isnt it always better to charge units as a liquid?

@@love2hvac is that just for r410a or other refigerants as well? im a facilities manager and just recently started doing alot of hvac work. im going to check out all your videos and that playlist thanks brotha, need to learn as much as i can if you have any recommendations let me know.