Troubleshooting Gas Station Ac Issues With An Upgraded System
ฝัง
- เผยแพร่เมื่อ 23 ส.ค. 2024
- New air conditioner at a gas station malfunctioning. Little did I know it was a new swapped out system with a lot of old parts and a lot of corners cut.
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TXV is good idea 👍 that wrist band is 100% Truth! ☝️
Thanks brother!
TXV,Airflow, Blower Speed,Ducting and refrigerant charge.
Mismatching equipment is never a good idea. Installers, previous techs mis diagnose all the time.
Thanks for sharing. Quality complete diagnostics
Thank you!
I’m ok with that rainbow!!
Adding a sight glass to any piece of equipment makes it look more professional...I've even added them to boilers for visual inspection of water flow.
Great troubleshooting. And who doesn’t love a cliffhanger?
🤣🤣👍👍
l would have been tempted to suggest they call back the installers. But you kept your cool and now probably have them as a customer for life.
True 👍👍
Bubbling sight glass with subcooling, noncondensables? Not all noncondensables cause high head
Thanks for sharing your adventures in HVAC Land with us.
I think it’s your testo clamp thermometer. Mine always showed more Subcool than I actually had with the Iconnect style cooper strap probes
Nice fix on somebody's hack job. Thanks for the video.
No problem 👍
Man, I appreciate your page. Love the content and constantly learning from you. Thanks!
I appreciate that!
Nice work Rick.
Good job Rick.
Amen on the bracelet! it is mission to speak the truth and share the Gospel! awesome job again as usual!
ADP has many coils, some with txv, some with piston, so it all depends on what you order/get. last I seen they were all factory ready for 410A with TXV and non-txv models supplied with both 410 and 22 pistons. assuming they used the right for the tonnage range, set the airflow right and installed the correct piston, it should just work.
Anything higher than 13 seer has issues without a TXV. I made that mistake once before.
@@HVACRSurvival that makes sense, as they're trying to squeeze efficiency out of them, which pretty much means having over-sized coils both indoor and outdoor.
or should they always have been that large with TXV's? (YES), the bean counters are getting double fisted in response. lol
Carrier usually has a txv subcool on the data tag, not that this had a txv but from my understanding it is usually between 7 and 15 degrees depending on the unit. That’s when they say it has a solid line of liquid.
they installed the wrong flowrader.(piston),thanks for sharing nice work.
First they took our rainbow and now they’re taking our letters 😂
New Rick video! Yes!
It’s been sitting on the computer for over a year. Nothing goods been happening lately.
Good job Rick hate going behind someone else nature of the beast.
i think its flashing because your subcool may not be accurate due to glide when doing the bubble point scale on danfoss app. maybe testo gauges doesnt calculate it. idk
Nice video brother I’m down with that rainbow I will stay subscribed!!!!
Awesome thank you!
Great Video. Thank you for sharing. May I ask, why put high pressure control on liquid line service valve on residential condenser ? How many pressure need to set for it ?
It’s used for fan cycling to help it work in low ambient temps.
Amen brother for that wristband
Ur really good very thorough
Thank you!
With a 20 degree split across the evap is it possible the system was just undersized? Was it a particularly hot day that day?
Would that be artificial subcool from non condensables ? I mean if sideshow Bob was the one pulling the vacuum beer can cold then that's possible innit ?
Rick , thanks for sharing Ephesians 2: 8-9.
For by grace are ye saved through faith; and that not of yourselves: it is the gift of God: [9] Not of works, lest any man should boast. May I ask where you got yours ?
If you’re talking about the bracelet, it came from a group called Revive Ohio. The origins of the group began in Texas. It’s an easy way to share the gospel with people after you interact with them. I should’ve stopped speaking after I mentioned it being hijacked, but my worldly self likes to say more than it should so I just cut the whole section out after the video release.
Thanks for the reply! You shared the gospel with me through the bracelet you were wearing, may God bless you!
@@Ted_E_Bear thanks Teddy. It’s no wonder why you have been so supportive. At lest your actions show it
_So long and thanks for all the fish_
Thanks for another fantastic video
Id suspect it is the condenser fan running too long during low ambient temperatures because HVAC is designed for 95°F ambient and if I heard right the temperature was atleast 10° below the designed temperature which lower the capacity and that fan running too long will cause the bubbles in the sight glass in low ambient environment the fan motor should run less than if it was at designed temperatures increase the off time of the condenser fan motor by increasing the on cycle pressure to 445PSI and cycle off at around 365psi this will put you condensing temperature between 125°-110°F and Ill bet the sight glass will clear up this will also effect your SC temperature and the SH temperature, with out the TXV the superheat and SC can not be set due to the fluctuations of the capacity due to the incorrectly set fan cycle so a TXV would help to stabilize the capacity fluctuations
Thank you for the video.
Noncondensables wil make subcooling appear higher than actual. Did the hackers even pull a vacuum or just charge it with air in the lines?
Rick, you are hilarious!!!!!!
I wonder what your target superheat would be. testo makes some psychrometers to get return wet bulb temps.
with it being so warm in there I would assume there is a high target SH and with high suction pressure I would be leaning to an overcharge
Generally, your subcooling and superheat are gonna be fairly close to the normal zones and neither one of them was so that reason why I didn’t even mess with checking that. I would’ve guessed the super heat would’ve been lower if it was warmer in the wet bulb is higher.
Love the wristband bro!
Thanks!
I agree, TXV on these units in this application would be much better, too much temperature swing with the front door opening/closing constantly
Also as a fellow viewer mentioned, the testo clamps are a bit whacky sometimes, speaking from my experience with them any way…that and their wireless vac guage..total dogshit
Better efficiency
Great job Rick look like someone hacked that unit
Thanks Dan!
My bet is no piston or piston too large, seen it with yokels who don't have enough understanding of how things work.
'Phantom' subcooling is turbulent rather than laminar flow because someone didn't deburr their tube causing a very small venturi effect. 4F SC is not enough to guarantee bulk fluid is below boiling point with said turbulent flow.
And just to be cleeky, Rick, 🏳️⚧️
Nyah! 🤣🤣🤣
probably has a 410A piston factory installed, maybe wrong piston or oversized coil for the condenser tonnage. hard to say what they've done, but a TXV should fix it, assuming the gas isn't mixed or has non-condensable schmutz.
@@throttlebottle5906 I've gone behind other companies who buy the coil based on cabinet size and they'll be shipped with a piston for the largest supported capacity (like goodman with their ARUF4860 air handlers, the piston is for 5 tons, but because it can be used with a 4 ton application they never swap the piston to the one included with the condenser) you end up with low suction pressure and the yokels will overcharge to compensate for the low suction pressure and end up with too low SH trying to hit a target 40F evaporator saturation ballpark. And now because the system is overcharged with not enough backpressure on the liquid line you get velocity effects in the column causing it to be colder than expected. That stupid low compression ratio Rick saw is the biggest tell the piston is too large for that condenser.
What was your target superheat? Did you take a WB temp?
I didn’t spend much time on it, but you’ll see when I first open the unit that they wrote down all their numbers and they had a super heat of 18 originally when they started it. I believe they had us install a Txv that was the only solution of this. When your sub coolings already not there, raising the superheat is just gonna starve the coil even more and that was all gonna change based off outdoor temperatures. I left it as it was.
@@HVACRSurvival
Sometimes all you can do is walk away and address it later. As much as I dislike changing TXVs (usually messed up by not purging with nitrogen or bulb charge loss), they are necessary.
One thing you need to get rid of that piece of junk Stratus
🤣 that’s funny!
rainbows have always been fruity to me..... 🤣
maybe nobody else has noticed the subliminal messages over the years of all the fruity things/products/etc. not that I care what anyone does either way, so long as it doesn't effect me any.
🌈 Rainbow Rick 🌈
These people get butt hurt about everything.
Everyone always gets butthurt about everything. If it's not that thing then it's the opposite.