great video Mr.walker. I recently graduated from the F.C.C. h.v.a.c. program.your videos are a great learning tool they help me stay on top of thins.keep it up.......wish you all the best....
Excellent video it has answered some of the mystery I had as to why they have screen and also cool tip to see if the partial freezing or low freon flowing can be checked by warming the bulb or adjusting the spring pressure to control the superheat.
Ron- thanks for the video. I'm going through them one by one. Questions: Why does the refrigerant not simply flash cool when it exits the metering device? Is it just pressure differentials that move the refrigerant along? Should all older metering devices be retrofitted with TXV's? what's the advantage? (Video) Why not have an heat exchanger between the compressor and the condensor coil? I'm guessing thats what a de-superheater is. Only time I've heard of them is for ground source heat pumps. Why? With the much superior transfer properties of water, and the need for heat, why discard it to air? Put the condensor fan on an temperature differential controller, controlled by a sensor on the exchanger. If the hydronic/gas exchanger takes the heat and transfers it to the Domestic hot water tank, the condenser fan never runs, saving energy, wear, and noise. And gives free hot water, for the price of running a circulator. Seems a basic addition to any southern climate condenser. What am I missing?
very good explanation of the theory behind the txv. I am no fan of txv to be honest I run into more head scratchers dealing with txv's than with pistons, mainly run into starving evap coils on 5-6 year old units eventually a txv gets stuck and turns into what I see as a fixed oriphas end up having to charge these systems with subcool making sure I am getting liquid and by superheat, due to faulty txv's surviving poor r22 to 410a change outs 5-6 years ago. Its getting easier for me now to identify that crap out here in the field. Its educational to watch your video and see how a txv is suppose to work, but out in the field I find hardly working txv's allot and they are a headache, client cannot afford major repair etc. I like pistons i wish the manufacturers could make pistons work txv's really bug me when I have starving evap coils with high super heat and good sub cools, especially on heat pumps!!! Thanks for the video sir. Oh and the rookie trying to figure out how to make a hole for the equalizer tube, use your torches.... Your welcome, say a prayer for me out here please..
It should be 14 deg F not 14 psig if temp is what we are after because 91psig-67psig is 24psig thus 91psig is equal to 54deg and 67psig is 40degF. I hope my understanding is right.
Can you make a video on how to wire a rectorseal SS500EP secondary pan water safty switch. Also how to wire up a rectorseal SS500EP WITH A SS1 PRIMARY float safety switch . Thank u
I recently was hired as an adjunct Instructor for a local technical college teaching HVAC. Since then I have begun my search for applicable and detailed training aids to help illustrate the details of how the process of heat transfer works. However, other than RUclips videos like yours, I have not been able to find specifically what I am looking for. That being said I was hoping to find some open source flash animations or power point animations that I could use without license in my class. I do not have the time or resources to be developing or purchase my own at this time. Do you have any suggestions as to where I could find any useful visual aids to help me teach my courses? Thanks.
pls advice i have problem in refrigeration system it is bitzer 15 hp it is new system while running the whole condenser unit vibrating i can't find out the problem orifice used no 2 expansion valve TE_5 It is a major issue for me pls help thank u
I am interested in HVAC certification program and was wanting to know if a great online school to get this certificate/diploma. Does anyone have recommendations?
Help me please!! lol I condemned a fairly new txv on a call.. Gas A/C 2heat 2cool single compressor with an unloader on a trane system. Installed mid summer last year..Bottom of evap frozen back to compressor, split gas A/C..Thawed system for a day, came back next day, running to specs with a 19 degree delta t.. freezes back up the next day under heavy load. cycling on low pressure, but head pressure rising. Filters clean, fan motor running every time I laid eyes on it.. txv will go in Monday, I hope it works
Ive challenged the contactor, thot maybe it might be sticking, cycled and recycled the variable speed fan motor, the drier is clear, no temp drop, and on a gas A/C the only thing left in the way is the txv .. When the system shuts down on low pressure, very little equalization of pressures.. Coil is trapped in the attic, but I get very little migration back to compressor
Sounds like someone didn't pull a proper vacuum and there was a trace amount of moisture that would freeze in the TXV orifice. When the system is shut down the ice melts and the problem goes away but returns after start-up. Solution is to replace the filter/drier and draw a deep vacuum for at least half an hour before recharging.
In Uk studying RAC certificate level 1.Our wrkshop tutor is quite faster and he's done couple of demos that I ddnt know what was going on and at least why we were doing it.I need to pass my course but I thnk I have limited resources such as xtra help on wrkshop demos plus at least notes prior to demos so u know what u on about etc....So plz The great RON help me with a an ideal plan to pass and fully understand my wrkshop tasks.Currently;we've done two tasks...i.e gauge fitting +system pumping dwn then setting low pressure control. Whereas i fully understood gauge fitting plus pump dwn but Lp switch setting is a bit tricky and dnt understand the whole concept with task questions like how to repair Leaks from Lp controls..jesus! Plz help sir.
Honestely thanks for your you tube posting. it helping us maintence personal in apartment,, how to covert most not all but the one's we can save into 410a.. God bless You. if i offended you with the God bless you. i opalogize... GOD BLESS YOU... Thanks.
great video Mr.walker. I recently graduated from the F.C.C. h.v.a.c. program.your videos are a great learning tool they help me stay on top of thins.keep it up.......wish you all the best....
Best explanation of the TXV I’ve ever seen thank you
Yes indeed!
Thank you Ron. Fantastic.
brilliant video mate.....long live Ron. I am an electronics guy...still understood the operation of the TXV pretty clearly.
Great video. Understood the workings of TXV in a flash! Thanks Ron
You're welcome!
Excellent video it has answered some of the mystery I had as to why they have screen and also cool tip to see if the partial freezing or low freon flowing can be checked by warming the bulb or adjusting the spring pressure to control the superheat.
Thanks! Comments like yours are what motivate me to shoot more videos.
Long loooong life to u bro.. U r simply the best and ur videos are helping me allot. Thanks
Abid Ali Thanks
Excellent explanation, for those who want to understand the refrigeration process.
Thanks my friends excellent work.
You're welcome
Ron- thanks for the video. I'm going through them one by one. Questions: Why does the refrigerant not simply flash cool when it exits the metering device?
Is it just pressure differentials that move the refrigerant along? Should all older metering devices be retrofitted with TXV's? what's the advantage? (Video)
Why not have an heat exchanger between the compressor and the condensor coil? I'm guessing thats what a de-superheater is. Only time I've heard of them is for ground source heat pumps. Why? With the much superior transfer properties of water, and the need for heat, why discard it to air?
Put the condensor fan on an temperature differential controller, controlled by a sensor on the exchanger. If the hydronic/gas exchanger takes the heat and transfers it to the Domestic hot water tank, the condenser fan never runs, saving energy, wear, and noise. And gives free hot water, for the price of running a circulator. Seems a basic addition to any southern climate condenser. What am I missing?
Full of nuances 👍
Thank you.
That was excellent, I totally understand the TXV. Thank you, I'm deff going to check out your other vids.
very good explanation of the theory behind the txv. I am no fan of txv to be honest I run into more head scratchers dealing with txv's than with pistons, mainly run into starving evap coils on 5-6 year old units eventually a txv gets stuck and turns into what I see as a fixed oriphas end up having to charge these systems with subcool making sure I am getting liquid and by superheat, due to faulty txv's surviving poor r22 to 410a change outs 5-6 years ago. Its getting easier for me now to identify that crap out here in the field. Its educational to watch your video and see how a txv is suppose to work, but out in the field I find hardly working txv's allot and they are a headache, client cannot afford major repair etc. I like pistons i wish the manufacturers could make pistons work txv's really bug me when I have starving evap coils with high super heat and good sub cools, especially on heat pumps!!!
Thanks for the video sir.
Oh and the rookie trying to figure out how to make a hole for the equalizer tube, use your torches....
Your welcome, say a prayer for me out here please..
V hhbbnchxugg
Thank you for the video it was very educational an eye opener god bless you
Great video. Please share more videos.
Thanks John, I will continue posting.
It should be 14 deg F not 14 psig if temp is what we are after because 91psig-67psig is 24psig thus 91psig is equal to 54deg and 67psig is 40degF. I hope my understanding is right.
Thanks my hats off to the person who though up the TXV valve . Was it one person or many playing off each others ideas ?
nisw1918 My hat is off as well. I did a quick search on the inventor. Not luck so far.
Can you make a video on how to wire a rectorseal SS500EP secondary pan water safty switch. Also how to wire up a rectorseal SS500EP WITH A SS1 PRIMARY float safety switch . Thank u
can you tell me what is the difference between ford air conditioning and normal air conditoning?
The answer is clear. I can not commit to a TxV valve without understanding the heat pump
Did you get a chance to answer my question, I emailed you a couple of days ago. On how to wire the low-voltage condensation pump.
I recently was hired as an adjunct Instructor for a local technical college teaching HVAC. Since then I have begun my search for applicable and detailed training aids to help illustrate the details of how the process of heat transfer works. However, other than RUclips videos like yours, I have not been able to find specifically what I am looking for. That being said I was hoping to find some open source flash animations or power point animations that I could use without license in my class. I do not have the time or resources to be developing or purchase my own at this time. Do you have any suggestions as to where I could find any useful visual aids to help me teach my courses? Thanks.
Great class on the txv.
I would like to know if i can clean an expension valve ea36yd-106
pls advice i have problem in refrigeration system it is bitzer 15 hp it is new system while running the whole condenser unit vibrating i can't find out the problem orifice used no 2 expansion valve TE_5 It is a major issue for me pls help thank u
I didn't understand how 91 psig - 67 psig = 14 psig. Did the spring account for the missing 10 psig?
81
excellent i fully comprehend it now ! thank you
what causes the txv to freeze
ODT 85degrees R22 txv 4ton package unit suction temp to the compressor was 25 degrees head psi was 425 is this a TXV issue or a blockage ? SAL
How about checking for partial air flow thru the condenser fin coils, compressor amps for a possible overcharge of refrigerant ( just a wild guess)
I would like some Nate information if possible thank you.
Hi Anthony - Go to www.hvactrainingsolutions.net and check it out. If you have any specific questions just shoot me an email.
Happy New Year - Ron
Nice video!!
Do you know where I could take the NATE exam once I complete the training.
Hi Anthony, Yes... at your local HVAC supply house. Almost all of them are certified proctors for NATE.
Ok sounds good I really like the website.
I'm a retired veteran looking for a second career
I am interested in HVAC certification program and was wanting to know if a great online school to get this certificate/diploma. Does anyone have recommendations?
You're looking at one. Use Ron's school.
Can't go wrong there.
Help me please!! lol I condemned a fairly new txv on a call.. Gas A/C 2heat 2cool single compressor with an unloader on a trane system. Installed mid summer last year..Bottom of evap frozen back to compressor, split gas A/C..Thawed system for a day, came back next day, running to specs with a 19 degree delta t.. freezes back up the next day under heavy load. cycling on low pressure, but head pressure rising. Filters clean, fan motor running every time I laid eyes on it.. txv will go in Monday, I hope it works
Ive challenged the contactor, thot maybe it might be sticking, cycled and recycled the variable speed fan motor, the drier is clear, no temp drop, and on a gas A/C the only thing left in the way is the txv .. When the system shuts down on low pressure, very little equalization of pressures.. Coil is trapped in the attic, but I get very little migration back to compressor
What was your superheat and subcooling?
Sounds like the TXV to me.
Sounds like someone didn't pull a proper vacuum and there was a trace amount of moisture that would freeze in the TXV orifice. When the system is shut down the ice melts and the problem goes away but returns after start-up.
Solution is to replace the filter/drier and draw a deep vacuum for at least half an hour before recharging.
It was a failed TXV.. We replaced it.. pulled it down to 500 microns.. went back with virgin 410.. no issues since then..
In Uk studying RAC certificate level 1.Our wrkshop tutor is quite faster and he's done couple of demos that I ddnt know what was going on and at least why we were doing it.I need to pass my course but I thnk I have limited resources such as xtra help on wrkshop demos plus at least notes prior to demos so u know what u on about etc....So plz The great RON help me with a an ideal plan to pass and fully understand my wrkshop tasks.Currently;we've done two tasks...i.e gauge fitting +system pumping dwn then setting low pressure control.
Whereas i fully understood gauge fitting plus pump dwn but Lp switch setting is a bit tricky and dnt understand the whole concept with task questions like how to repair Leaks from Lp controls..jesus!
Plz help sir.
How does a suction line works on a air conditioner
Thanks
Honestely thanks for your you tube posting. it helping us maintence personal in apartment,, how to covert most not all but the one's we can save into 410a.. God bless You. if i offended you with the God bless you. i opalogize... GOD BLESS YOU... Thanks.
Me Three who would take offense on the God bless thing? Good luck.
Thank you very very much!!! sir
Thank you!
Thanks sir
thanks
Epic
Rat B. ✔️
Nice video!!