This video is brought to you by spore'ln quality, integrity and tradition yeah. That is a problem. 51 psi and unit says 73 psi. So there's something wrong with that.

Transducer we got approvals and we are here it's an early morning. We're gon na be doing a crane, lift placing this condensing unit and putting a new evaporator. So what I'm gon na do to make things go smooth that way, I don't to bring my recovery machine on the roof, because we're gon na do a pump down front seat. The receiver tuck my gauges in the cover screw it back down, lift it off and do the recovery on the ground, and then that way we don't got to drag my recovery equipment up onto the roof, so we're kind of in a time crunch.

I got guys downstairs getting ready to demo the evaporator. We got a new evap new condensing unit and hopefully a new line set to. Actually, I didn't even have to put my gauges on I'm gon na kind of cheat, wait for the low-pressure control to shut it off. I just front seeded the valve and left the cap on, because there's Schrader ports we needed a way to access the system, and once I cut the lines open, I won't be able to connect to that port right there.

If I had it front seated so yeah. So it's just pumping down right now, so it on see to the receiver it pumped down the low pressure control shut the system off, and then I just cut the lines the refrigerants trapped at the receiver, we're going to turn off the electrical disconnect that and then Lift down the condensing unit again, I'm trying to move as fast as I can. I went ahead and undid the bolts for the condensing unit. While I was waiting so yeah, that's all right! All right! We got a unit coming down right now, then we're gon na hook up the old one and move on with it, and we are left with a new heat craft unit.

The plan is to use 448 a. This is a medium temp beer walkin, it's gon na. Go pretty much in the same location. I plan on running a new line set at least at this point right now, but we got to open up this root penetration make sure we can access.

Everything will also have to run some two by fours across that. I think I brought some so that way we can support the load of the condensing unit using the same platform. We got the old evap out this thing. Pretty corroded I mean it's not complete, it's not as bad as the condensing unit, the condensing it was horrible.

Condensed naeun is this one that was all loose, and I said it was like loose on the things so we're currently getting ready to recover the charge right now in the trailer. So all right, we got the condensing unit mounted. I just cut the two by fours across the condense unit, doesn't weigh nothing, so it's not too much of a load for those open up the penetration and the butt heads that built this place filled this with expanding foam. It's a pain in the butt.

I got a fish out all this crap now without cutting wires and stuff like that. Sometimes these people are silly who knows man, you know what be honest with you. I may just drill a new penetration just because I don't want to deal with that actually sounds. Like a really good idea, I hate drilling penetrations and roofs, but this would be super easy because we're on top of there walking right now, I could come out.

Do a 90 straight down. I might just do that. We'll have to take some measurements. What I'll do is I'll measure the opening of this in relativity to where I think the hole might go and then go downstairs and measure it out to make sure it's in a good spot before I drill a hole because fish in that foam.

Now it's gon na be a pain. Well, it's not as open as I thought it was gon na, be it's kind of tight. We can get on the other side of that pipe over there. My line set is all the way down at the very end where that red soda line is it's way past that way down there.

This is gon na, be a challenge for sure very, very challenging holy moly. So this Yellow Jacket tubing bender, it's the ratcheting tubing. Bender, if you get the reverse adapter, look at that look at how close I got those two 90s. It doesn't usually work out that way.

I was actually surprised that I got it to work, but that is clean. I, like that Yellow Jacket vendor for sure so we're working on moving it over here is not going to be perfect. This is a retrofit job, so it's not gon na. Look like a new install, but we're gon na do our best all right.

So we got our line bent and then we got to make a connection right here. So that's cool it'll work we'll slide the insulation on then we'll strap it to that two by six or two by 10 or whatever. That is 2 by 8. So we're gon na do the 3/8 now Bend that out all right, so we are pretty much ready to braze.

We've got everything been, and yes, it looks a little funky, but once we insulated it all clean up and come together. This is soft copper. So it's very pliable. The unit still has a night recharge in it.

We got to release the night recharge and then we're gon na purge the system with nitrogen while we're brazing and yeah. That's what we wrap. It is always good when there's actually nitrogen in the condensing unit. That means there's no leaks so funny we get this far and then we go to test to see if there's nitrogen, okay, all right so inside the box, we got a line set coming down.

We got a p-trap we're going into the coil and then we just got to cut off that 3/8 connector go into that very important. When you're doing these QR cs or beacons, you've got to remove the suction line, temp sensor or you'll melt it. It goes right. There so we remove it, we're gon na energize, the coil, get the TXV opened up and then will purge nitrogen and braze all right, so we're all pipes and my coils running we got power turned on.

I know that flashing, but that's the frame rate, so we're all hooked up electrical you've still got a up a lot of stuff. We've got. We use the existing penetration from the old line set because the refrigeration lines were on that side. So then, we'll just seal it up.

We've got this one. We drilled the new penetration. Here we actually used the hole from the old electrical for one of the bolts and then we'll seal that up too but yeah. I'm gon na go up on the roof and get the nitrogen flowing, and then we'll come down here and braise this and we're gon na.

Do this trip carefully because we're gon na do these welds, first or braze joints slide on the insulation, hold it back with the tubing cutter and then do these ones right here and then let it slide on and remember this one doesn't need a spot for the Expansion valve because it's an electronic valve, so they grab some of the wet rag, the Viper wet rag. Well, wrapped it all on that that way, and this black bush, you moved it out of the way it's not way. It's not gon na melt so, like I said we're going to do this phrase joint this rage, actually, no we're gon na do this brains joining this bracelet first and then we'll slide the insulation. Then we'll come back and do the other ones.

Alright, I'm a freak and I literally take my mirror and check every braze joint. Just because I want to be sure. Yes, it takes me a little extra time, but that's how I roll I check every braids joint always have and yeah. I know I go heavy on my solder.

I always have. I feel more comfortable doing that and remember I am brazing with nitrogen. So so we got those ones done, I'm gon na, let them cool and then we'll slide on the insulation, and everything will be straightened out. Guys that looks crooked, we'll be able to straighten it all out.

Once I get it all insulated and everything you can see once they cool they clean up really nice and look nice and solid. No problems save these caps. I always actually save these and throw them on my toolbox, because the caps are great for when you're sliding insulation on you, don't got to worry about taping it up and getting the glue from the tape on the line or anything. So alright we're going to start putting this insulation on and then make those last two braze joints all right, so push the insulation over put the little sensor in there and then we're going to put the foam tape.

They've got some foam tape that it comes with right. There we'll wrap the foam tape around the sensor we'll clean this up. I was able to straighten up the lines a little bit more. Will seal up this penetration going up so we're getting there all right we're going to go through and program this real quick! So we go to program a through e we're gon na go air defrost! The refrigerant is going to be 48.

4848 a so it's 448. A box temp, oh you know what I think I screwed up Fox 10. Want me to double-check super heat. I think I was supposed to hit enter.

It's not a slave, now to defrost a day, six defrost a day, and it's a forgot. I have to hold answer. Okay, dff is the defrost time we're gon na do 20 minutes enter. I think I got a hit man, sir.

I can't remember DFT defrost termination temperature we're gon na leave that at 45 DFS. I know it's kind of probably hard alh. That's an alarm: I'm not worried about it. Áall, I'm not worried about it.

Alt you not worried about 1/2 through C. Let's check it, it should say Fahrenheit, it does FN 5. It says off: okay, we're in cooling mode; let's go through it again, a three! That's air defrost, good, refrigerant, 404. That's right! We got a hit, enter a store and enter there.

You go lockstep 35 superheat. We didn't change, that's the way. Dfn sixty frosted a DFF twenty minutes, buddy, i'm gon na change that to four defrost a day. Alright.

But you guys get the point. We got a nitrogen pressure test going on right here. We're gon na give it a few minutes. I really don't anticipate any leaks, so I think we're gon na be fine and we'll get the vacuum running in a few minutes.

What I'm trying to do is we rush through this not rush, but I want to get the vacuum running, so we can go, take a lunch and then we can just let it run in the vacuum. We've got everything else for the most part done. We've just got to tidy up and seal the penetrations and stuff. Alright, I'm an impatient person.

I can't wait any longer. We draw a point four psi, so I'm cool with that we're gon na go and get the vacuum pump running. I just closed the gas ballast because we're gon na go away we're at about 1,400 microns right now and I have this side shut off. Initially, I used it to pull the system down for the initial pull down, but then I back seated the valve so we're not pulling from this anymore we're only pulling from the suction and I've got my Schrader.

I mean my micron gauge on the liquid line, so we're pulling all the way from the suction back up against to the micron gauge so that we were getting a true vacuum reading of the system, so so far, so good, alright, so we're still pulling through all Right we're at 289 micron and I'm going to shake the compressor and agitate the oil and see if we can get the nitrogen to boil out of the auto tub. You know pull out of the oil better again, just proving the point that nitrogen will get trapped in the oil. There was nothing else in this system. Besides, nitrogen came from the factory with nitrogen, I purged with nitrogen, still nitrogen in the oil, all right, I'm just about done with the vacuum, and I actually am done with the vacuum and I'm getting ready to put my gauges on the units to charge it.

Sometimes. I use probes - sometimes I use my gauges so in this situation. What I'm gon na do is I'm gon na pull an evacuation on my key manifold gauge set before I open it to the system, because my manifold gauge set potentially has a lot of air and moisture in it. So I have not opened up the king valve right here and I have not opened up this VCR t vacuum core removal tool, so I'm just pulling against the gauges to get a vacuum down and then we'll go ahead and open it up and charge the unit Up all right, the factory says maximum charge on this unit is 5.5 pounds.

So I set my units to pounds only because if it says 5.5, that's not five pounds. Five ounces, that's 5.5 pounds notice something we leave our micron gauge on the system. Okay - and we take it off because this micron gauge can handle positive pressure, so we take it off when the system has pressure in it. I've opened everything up, we're ready to put our refrigerant in we're going to put it in on the high side, I've already purged I'll.

Do it again just to be safe, then we purchased our liquid you're using 448 a and that's it we're going to go there. We go, you know what I should be doing to be honest with you. I should have this shut and I should be charging into the receiver instead of letting it flow all the way through the system, because that way we don't get a big old surprise on the suction valve of the compressor when a bunch of liquid comes up. So it should be charging like that there you put as much as we can into the system.

We hit high pressure on our genius right here. So that's good! So now there was no potential of letting any air into the system good and we're just charging it up right now, we're at 2.5 pounds and the max charge is 5.5. That's what we're gon na put into this system and that they're saying the max charge with a pump down receiver is 5.5 pounds. This is a rather small receiver, so that does kind of make sense.

And then, what we'll do too is we'll: do a pump down test and mark the refrigerant level for the next guy. When we're done, I went ahead and turned on the disconnect switch and mind you. It is pumping down, so we can go ahead and test the low-pressure control right now to see what it shuts off something's, not right, because it's not shutting off there's a problem so we'll have to figure that out. That's why we test things.

There's a problem with the low-pressure control, so we'll figure that out right now. The reason why we, Commission things is to to to find mistakes, potential mistakes on installation and things like that. This was a simple one. I had another person up here and they miswired this unit.

That's all nothing bad. What they did was they wired the line voltage to the load side. So that's why I never shut off because it had three phase compressor at all times, so I simply need to switch these three wires right here to the line voltage side of the contactor. That's off so I'll.

Do that and then we'll test the rest of the system and finish charging it, I've rewired it and we got to turn it on. It should not turn on. Okay, that's correct all right, so we should have three-phase power at the top of this contactor go away. Two away: do it so we've got three phase power.

Now it's not running and that's simply because I haven't pumped down so I'm gon na go ahead and open up the king valve on the receiver and finish charging this unit. Now I am not a fan of the sight glasses that come in these heat, crap condensing units - I do know, I'm such a fanboy of a spoil and stuff. This is a factory unit. It comes with these son who Chinese Japanese Korean - I don't know whatever company but they're so wishy-washy.

You know these heat crafting. That's used a Corel electronic expansion valve I mean I guess they don't have to use everything all name-brand. I just I just don't care for these sight, glasses. They look difficult and they're different to me.

You know - and I just don't like change I'd rather have a spoil and in all honesty I didn't sell them this unit, the customer purchases it themselves, but I would have rather put a flare dryer here with a flared sight glass and make it easier for a Replacement next time, anyways we're still at 3.5 pounds sight, glasses, splashing, I'm going to add refrigerant until I get a clear sight glass, but I do know that we're gon na put 5.5. But I just want to see at what point we clear the sight glass. So we cleared the sight glass at about 5.1 pounds and the factory is calling for five point five, so we're gon na go ahead and put in the five point: five and then we're going to pump down the receiver and check the liquid level. Alright, let's see if the camera picks this up my unit pumped down, it went off on an error e six.

If you guys, I don't know if the frame rates working - it's 46 degrees in here and it's got an e six error code. And if you look on the side of the thing it says, e six is low. Superheat during cooling. Well, it's possible that it went off on an error because it had been running for so long and it had no superheat at all, possibly and eventually it just went off.

So I need to reset this error is what I need to do so without knowing how to do this off the top of my head, we're yeah! No, I don't want to do test again. I guess I should get the instruction manual I'll reset. Let's see if that doesn't me SIG's test, I don't want to test the heck. Let's see what this does.

Okay, there we go we're off 47, so awaiting for cool emotes. Oh uh, not still reading me six, sir, it's on it away. Now we just turned on the way, so it's running so let's go in here and do monitor what is my super heat out right now. My super heats out 21 degrees.

So it's definitely shouldn't be too low. Right now monitor okay, cool, so we're good we're gon na go ahead and let it go back to normal and finished our key, so we're gon na go pump down test now, because we put the 5.5 pounds in here while it was actually pumping down. I went ahead and put the rest of the refrigerant in real, quick before it shut off, so we're gon na front seat the king valve, while still having the high side pressure gage on there. That way, we can make sure that the system doesn't go over pressure.

Okay, this is our refrigerant soft plug right here. It's actually labeled, it's stamped 430 degrees, which is the safety limit temperature of that receiver. What we're gon na do once it pumps down we're going to take a heat, producing device and pass it up and down a couple times we're going to take our fingers and find the temperature change, and that will be the liquid level. It's very important, like I've.

Always said that the heat producing device does not exceed that 430 degree temperature and the receiver, it literally only takes like three or four passes: it's not like we're gon na sit there and heat it up till it's cherry hot or anything. So I do not have my thermal camera with me, but I can clearly take the back of my fingers and my temperature change is right here. The figures, the factory set 5.5 pounds and that's right at the 80 % or 3/4 mark of the receiver. I know 80 % is not 3/4 guys, but yeah.

It's just it's right there at the 3/4 mark, so we're gon na go ahead. Mark this with the paint marker with the refrigerant type and go ahead and write the refrigerant type all over this unit and we're going to watch this thing come down to temperature. So that's not too bad marked it for the next guy. So that way you can see that's why I left the liquid level on 114.

24. 48 a-and. I guess I should write 5.5 pounds, maybe just so that they we know but yeah we're gon na write it up here and then we'll open up the kingdom and let it run now. I don't have any clamps on here showing you guys what line temperatures are, but this is our 4 48 a and the the pressures of our for 48.

A are damn near similar to what our 22 was notice, our condensing temp 87 degrees. It's currently about 65 degrees outside which is on line, because that would give us about a 20 degree, condensing tempo, ver, ambient or TD across the condenser, which is about accurate for a microchannel, 68 suction pressure, 37 degree evaporator. My box is probably, I guess, about 45 degrees right now, so we'll go downstairs and look at what the superheat setting was. I went ahead and marked really good on the receiver marked right here, marked right there and wrote on both the top lid and the side.

Lid, the refrigerant charge and what's in there we're still really flooding back on our compressor, so we'll go check the superheat down at the evaporator. It is cold coming back right now, so we'll go check on that. So units done it's running, but it shut down on low superheat again, so I'm gon na need to go down there and figure out. What's going on, I need to look at that suction temperature sensor and see.

If maybe we have a failed temperature sensor, I'm hoping it doesn't have anything to do with the transducer or the expansion valve honestly on these qrc systems. This is probably the only time I've ever had a problem. They're usually really easy. The other thing too is: we still need to support that line.

I'll get someone back up here and I get that thing supported, but alright, let's go figure out what's going on with this coil alright, this is strange because I'm not seeing anything wrong. So if I go to, let's start back at the beginning, su super heat, where that's cooling mode 42 degrees in the box, my superheat currently right now is 5 degrees. C yeah we're running kind of low right now, okay, so it's a minute! It goes out. 15.

Suction pressure, it is not 77 psi suction pressure. That's our problem. We do not have 77 psi. We have it's like 50 psi I'll have to verify that.

Let me put a gauge on this yeah. That is a problem. 51 psi and unit says 73 psi. So, there's something wrong with that: transducer for your information.

There is a Schrader port underneath the pressure transducer and pulled it off and it kind of makes me wonder. I can't remember what I pressure tested to. I wonder if I got the pressure too high on this, because it actually tells you right here do not exceed 150 psi. I can't remember what what pressure I pressure tested to, but anyways local supply house had one.

I got one of my guys going to get it right now, he'll be back in 10 minutes, so we'll get it put on there and hopefully that solves a problem all right. Now. It's reading accurate, we're at 21 psi G 21, psi 22. So, okay, we're gon na let the thing run and make sure it doesn't shut off on a safety again, but it was just this bad pressure transducer and it's very possible.

I'm gon na review my footage because I don't remember what I pressure tested at so we'll have to see that luckily my supply house had and I'm probably gon na stock - these just in case all right, so we're gon na watch. This thing come down, so things don't always go as planned on that one. You know everything was going smooth, it seemed like you know all was good. I did have that little hiccup, the first time that I noticed that we had the low superheat error message and I thought it was just simply because I had let the system run for like two hours in a vacuum or two and a half hours or whatever Was in a vacuum and it was theoretically in the cooling mode, because I have seen something weird like that and I for some reason I thought that that's what was going on, but it turns out that no it wasn't what was going on.

So my assumption is is that when I pressure tested the system, I went up to 175 psi and I believe that ruined the pressure transducer. It's very interesting, though, to think that only 25 psi above the limit killed that pressure transducer, but it was clear when I popped the transducer off put the new one on it immediately read the right pressure and all was well after that. So you know sometimes you screw things up, though the only hopes that I can get is that I've learned from this and you know, and I'm hoping I can educate you guys and tee to you not to do the same thing that I do like. I said guys these videos that I make are simple mistakes that I have made over my career, that one cost me about two hundred and fifty bucks.

I think, or something like that is what that pressure. Transducer cost me - and you know, of course, can't charge the customer for that, because that was my mistake. You know that was an interesting one, but you know other than that guys I mean going through the installation. You know nothing too crazy.

You know try to use some common sense when you're, you know removing the equipment. I you know I was a little bit disappointed in the attic access. I kind of alluded to that in the video. It was a little difficult to get up in there and granted there was room to crawl in the attic.

It wasn't that that I was afraid of. It was that the room was very small in that to be able to take a 7/8 inch line, set and maneuver it and make a band up in the attic. It was really tight, but we were able to do it. You know, and it all ended up being okay, it just made for a long day because of that pressure, transducer and just the littleness little things that we ran into, and that was just a small box.

I think that was just like a 1 horsepower condensing unit or something you know, but you know we just we. We try to move on from the mistakes that we made. You know there was no fault of heat craft in that pressure. Transducer failing.

I can't give them bad press for that. That was my bad I'm pretty confident it was my bad. At least you know. I mean right on the side of that evaporator.

It said 150 psi, don't pressure test over that and I clearly I went and reviewed the footage went 274 psi. I think so you know kind of sucks, but it is what it is and I guess the rules about you know pressure testing to certain numbers when you're using transducers. You know you got to be careful about that. So yeah, that's pretty much it guys.

I really really appreciate you guys taking the time to watch these videos. Do me a favor leave me some feedback down in the comments. Let me know what you guys think. Let me know you know tell me if you think I did something wrong.

Tell me if you liked something, you know, I'm always interested in reading the comments and I do read every single one. I may not answer every single one, but I do acknowledge them when I go through and I give them a heart and a thumbs up. I do that to every comment that I can. You know just to acknowledge that I read it even though I'm not gon na be able to take the time - and you know maybe necessary, they answer every single one.

Just for your information, if you don't already know, live streams, Monday evenings at 5:00 p.m. Pacific time, where I usually recap some things and talk about these videos I had recently, if you guys did I'm sure you did see it, but I just recently completed part four Of the how we live the HVAC, our life, the series that I've been doing with my wife that uploaded earlier this week, yeah that's pretty much it guys other than that we will catch you guys on the next one: okay.