Had an Pride a/c company in Miami change out an old 28 year old Trane 12 Seer 2 1/2 HFCF to a new one 410 a system 16 seer and they did not flush system,just put it in a vacuum and opened the valves no start up sheet filled that new units bring,Glad to had seeing this,will call them back to let them know.
Don’t worry about it. It’s not that serious. As long as they did a drier and pulled a vacuum you should be fine. He probably did the start up sheet at home lol
Is it Lennox’s official position that flushing line sets on a retrofit replacement with Rx11 is acceptable?? If so please put it in the ODU instruction manual, and inform your trainers of this policy. As a contractor the mixed information is confusing.
How about u have an r22 system going to switch to r410 but evaporator is for r410 do u have to flush the evaporator? By itself or can u do it by cutting the lines outside and flush thrrw the suction side towards the liquid line while the evaporator is comnectec too? Or like i said before isolate the evaporator and flush evaporator 1st then the suction line and liquid line???
Honestly. I’ve only flushed a few systems per owners request. Never had an issue on units I’ve installed without a flush. Not sure if this does anything. Assuming you pull a good vacuum and install a drier. The units range from 7-3 years old and haven’t heard anything from those units. Some have had electrical problems. But not mechanical.
Good video. BUT.... The nitrogen process of pressurizing the tank at 50psi, removing oil traps on systems that may have them, crimping exit points for turbulence, time needed per flush per 50' by diameter, and purging at 150psi (max 200psi) with nitrogen needs to be mentioned in the process!!!
Make your own video then. This video was about the process that he was using. And if you actually watched the full video. He did mention the nitrogen pressurizing at the end. He just didn’t get all technical with it.
A Doug I appreciate the video. Replacing the condenser and line set from a r22 to a 410a system. The furnace and evaporator were change out 3 years ago. Doug can rx11 be used just on the evaporator? I appreciate your input.
You didn't even show the most important part... hooking up nitrogen and how much to hit with it. I used it for the first time and couldn't get it to flush properly was back flowing
I waisted 200 on this bullshit it says it does 50’ lines I got nothing out the other end off the line and there was no pressure left and the can was still full wtf
Had an Pride a/c company in Miami change out an old 28 year old Trane 12 Seer 2 1/2 HFCF to a new one 410 a system 16 seer and they did not flush system,just put it in a vacuum and opened the valves no start up sheet filled that new units bring,Glad to had seeing this,will call them back to let them know.
Don’t worry about it. It’s not that serious. As long as they did a drier and pulled a vacuum you should be fine.
He probably did the start up sheet at home lol
Action start at 7:34
I think Nu-Calgon recommends crimping the out-end to increase "back-pressure and turbulence" in the line and therefore cleaning action.
Good for us new in the hvac trade thanks a lot
Awesome- straight up to point -- SAFTEY always-- THX
Always a pleasure, Doug. 👏
Is it Lennox’s official position that flushing line sets on a retrofit replacement with Rx11 is acceptable?? If so please put it in the ODU instruction manual, and inform your trainers of this policy. As a contractor the mixed information is confusing.
Hi Neil
Do you have any exprience about rejecting the water and oil from the condenser of an air cooled chiller?
R11 used as a flush to remove the mineral oil that is used on HCFC systems which is not compatible with the 410 refrigerant oil?
You for got to crimp or restrict the discharge side to increase contact time.
Good point.
Well done.
Good demo Doug! Well done.
No crimping the ends?
great video
Great video. Thank you
Aren’t you supposed to purge it with nitrogen after??
👍👍👍👍👍
i like that part when the guy inside wear gloves but the other guy outside not :)
How does one flush the evap coil ?
Uhhh just flush the whole system.
How about u have an r22 system going to switch to r410 but evaporator is for r410 do u have to flush the evaporator? By itself or can u do it by cutting the lines outside and flush thrrw the suction side towards the liquid line while the evaporator is comnectec too? Or like i said before isolate the evaporator and flush evaporator 1st then the suction line and liquid line???
Honestly. I’ve only flushed a few systems per owners request.
Never had an issue on units I’ve installed without a flush. Not sure if this does anything. Assuming you pull a good vacuum and install a drier. The units range from 7-3 years old and haven’t heard anything from those units. Some have had electrical problems. But not mechanical.
Just flush the whole system, it’s not going to hurt it.
Good video. BUT.... The nitrogen process of pressurizing the tank at 50psi, removing oil traps on systems that may have them, crimping exit points for turbulence, time needed per flush per 50' by diameter, and purging at 150psi (max 200psi) with nitrogen needs to be mentioned in the process!!!
Make your own video then. This video was about the process that he was using. And if you actually watched the full video. He did mention the nitrogen pressurizing at the end. He just didn’t get all technical with it.
A Doug I appreciate the video.
Replacing the condenser and line set from a r22 to a 410a system. The furnace and evaporator were change out 3 years ago.
Doug can rx11 be used just on the evaporator? I appreciate your input.
So this product is for line set only what about ccoil & evap coil
Wrong way to flush out system....you need to crimp ends of copper line set. read the directions on the can
Please dont use this as a reference on how to flush a lineset....at all.
You didn't even show the most important part... hooking up nitrogen and how much to hit with it. I used it for the first time and couldn't get it to flush properly was back flowing
you help has no hand pro
I waisted 200 on this bullshit it says it does 50’ lines I got nothing out the other end off the line and there was no pressure left and the can was still full wtf
As eddman32 mentioned: "Wrong way to flush out system....you need to crimp ends of copper line set. read the directions on the can"
This video should have started at 5:00 min. Skip it , waste of time.
You talk too much saying more than any of us needed to hear. Just get to it next time or call in sick.
faster please. Y'all repeated your selves like 4 times