This video is brought to you by sportlin quality, integrity and tradition. All right. I've got some equipment here that the customer had shipped to us we're getting ready to start up the installation, i'm not going to be doing it all today, but uh we'll see you'll see when i get there. This particular location has a peculiar place where this condensing unit has to go.

So my thoughts are that i'm going to build a unistrut stand for it, but we'll have to see once we get there. If it can support the weight, i mean the condensed unit itself. Isn't that heavy? It's just got a big micro channel coil as well, so we're going to get over there and see what we got. We got an evap and a condensing unit and then we'll have to run a new line set for the equipment.

So this is my evaporator. This is an old unit, so but it's still going to go basically out the same hole outside of the box. This is a heat craft evaporator, so it should line right up, so it shouldn't be too bad. I've done work here before you guys probably recognize this, but uh yeah.

So this is my condensing unit right here. This is the pad that well, it's not really gon na fit on that pad, and i got ta figure this out, because this is the walk-in freezer equipment and the problem is: if we put the unit just like this one, then the conden or the the discharge - Air is going to blow right into the condenser and the access panels in the same location as this unit. So if we flip it the other way like this unit right here, then the access panel would be up against the wall and you wouldn't be able to get to it now. The only thing in the access panel is a compressor, contactor, a time, delay relay and a time clock.

I can very easily eliminate the time clock which i very well might do by putting a ke2, therm temp plus defrost controller on this guy, but we would still have a contactor and a time delay in there. So the question is: will it fit on this pad? I've got some measurements, so we need to measure it out and find out if we can put it on this pad, i mean i could kind of. If i had to deal with this space to change the contactor, i mean it kind of sucks. If i had to, but so let me get my notepad out, that i took all my measurements down on and see what we got.

If i put this unit right here, okay, it would hang off the pad by like six inches, which i could deal with, because they don't really use this, but for storage they shouldn't be using it for back here, but here's the problem. The line set is coming out the left side of the new condensing unit, so the line set would come out. Another six inches then wrap around. That would look like crap and functionally they would trip over it pushing their crap that they store back here.

All the time that's not going to work, so we cannot put the new condensing unit with the discharge air blowing. This way it's not going to work. We can't put it where the condenser would face the wall, because there's not enough room for this wall and it goes up quite a bit, so the air would resurf and fall back down into the unit this this new unit's going to move some air. So it is like i thought, i'm going to have to build a stand um.

The question is, i think, i'm just going to build a stand where that pad is it's a little ways away from this? My concern is first off what my first thought was: put a stand over this unit directly over it, so that we had no possibility of the discharge air making it to this condenser. But i'm thinking that the location of this pad is decent and i'm thinking that i can put the stand right there and as long as the unit's higher, i don't think that the discharge air is going to fall down and go into that condenser. I think we would be okay mounting it, so the discharge air would be blowing this way towards this condenser, but if i put it up on an elevated stand, it's going to be over that to where i'm hoping it wouldn't get blown into that condenser. This is my thought, so i'm going to measure out what i would need to make a stand for this guy.

Essentially, i just need to make it higher than this unit right here and then that would make everything easy too, because then the line set the existing line set right there. We could use that same path hell. We could probably use that same unistrut, just replace it. The knee i mean we don't have to replace the line set, but if we're changing all this equipment, i typically change the line.

Sets too the new unit's going to be 448a more than likely we'll have to see what line sizes it actually requires. That's a 7 8 half inch line set existing uh, we'll put a new disconnect switch um, so i'm gon na take some measurements. What i did was i drew out the condensing unit. I measured it right here.

So it's 29 and a quarter tall. The whole total width and depth is 30 by 43 and then i have my bolt hole. Pattern center point is 23 and a half and center point actually the center point of my bolt. Holes is 43., the actual unit itself is 42 and a quarter.

So that's the extra flange, so i think what i'm going to start doing is trying to build this stand today. I can build it. Existing right here, probably is what i'm going to try to do all right. I got the stand built.

We got some post bases on the bottom. Some support bars across it. It's nothing too fancy. I used a bunch of little stuff that i had around.

There's no need for the support bar to be a deep channel. So that's it! It measures out pretty good. It's pretty level wool field, adjusted once we bring the new condensing unit out, but this way we're done with this part, we'll probably go ahead and bring back the new condensing unit and start installing it and then come back another day. I'm not gon na do it.

Today, but we'll see we'll see how it goes, but this should be good. This is more than sturdy enough to hold this condensing unit. The new one that's gon na go on top, so i also forgot to mention. I just took some uh galvanized spray paint just uh.

You know the cuts where you put the cuts it's going to rust. We don't get a lot of rain here, so i don't even know that i'll spray paint the whole thing i just did the corners where it was cut, so nothing fancy. Okay, the customer ordered this coil and it came set up for 404a, but we can't use 404a in california anymore, so um we're going to go ahead and swap this valve over the expansion valve is set up for 404. We're going to go ahead and change it over to 448a or r22.

Now, one of the things we got to be very careful about is the nozzle size, so this has a one and a half nozzle and i went ahead and went through the spoiling book and did the calculations, i'm sorry the heat craft book and did the calculations And found that the one and a half nozzle is accurately or actually going to work properly for this coil with 448a in it too, so we're good on the nozzle. I don't have to change that, which was i'm thankful for that, because there's going to be a pain in the butt to get the nozzle out of that thing. But as far as the txv goes we're going to have to go and replace the txv. It's not as simple as just swapping the power head on it because of the uh orifice inside the txv, so we're going to go ahead and change that real quick to do that we're just going to pop over here.

I got my sporlin bq kit right here. Super easy i just select the power head element find the size of valve that i need on the bq side, which is going to be a three ton valve. So we're going to go ahead and use the pink cartridge, medium temperature, r22 or 448a. And then we select the body style which is going to be the sbqe body this one right here.

So this is going to be the same exact body style as what's in here. It's just going to be a tad bit taller because it has the buildable port inside of it, so we're going to go ahead and select that real, quick, i'm going to utilize their existing i'm assuming this is one of those sun, uh sun, who i i don't Know whatever solenoid valve so we'll purge with nitrogen, put a solenoid magnet on that. If i can fit it on there and uh get that txb swapped out real, quick all right, so we're going to go ahead and select this valve uh sbqe body. I always uh put an x on it, so i know i need to buy another one done.

I am just crazy, so i put it back in there fill the space then, according to this guy, we're going to use a pink cartridge. The cartridges are all labeled on the top, so this one's pink right there, so we use a pink cartridge super easy pop. This guy drop oil on each of the o-rings slide it in tighten it up. Okay, i've been getting some questions about this.

How tight do you go? You go snug, okay, if you're not using the little wrench that comes with it, just go, snug all the way down and snug, but to give you an idea, this is what they want you to use to tighten it. So you can't you have no leverage on that. So that means you can't go crazy. There we go.

That's it! That's all. I need to do okay, so that's that the pink is a b tag. You got got ta, make sure you get your little tag. Okay and then we're gon na put our power head on there.

I do the same thing on the power head mark it. So i know that i need to replace it uh kt43vc, that is a medium temperature. R22. 48.

49. 407, a 407c 407f. It's a medium temp, so it'll work for all of them. This guy right here, hand tight and then just a hair more.

I think their instructions actually say to go 60 degrees. So it's really not that much! I don't have one of those fancy thin jawed wrenches. So, just a little bit more there we go. That's it.

The valve is built and ready to be sweat and we're good to go. You can see i'm using the viper wet rag to protect the txv and to prop it up. So, let's get it sweat in real quick for this. My camera is overheating right now sitting in the sun.

It's really weird because it's like 76 degrees outside right now and it's winter, we're brazing with nitrogen, so everything's in double, checked all the braze joints. They look good, so we're gon na go ahead and pressurize this guy back up with nitrogen and we're gon na be replacing it tomorrow, but i'll get all this stuff off. I need to get this off as soon as possible, because this just dissipates the heat until it all absorbs into this and then it'll absorb into the pipe and the valve and stuff. So we definitely want to get it off right now so got my trailer trailer.

Maxed out with all the pipe that i need got some drain lines: some 7 8 refrigeration line 3 8 electrical conduit, 10 gauge wire a little bit everything. The only thing i don't have. I don't think i have enough 448a, so we'll probably have to get some tomorrow, but okay, we are getting ready recovering the gas out of the old unit. What i did to make things go faster like i do on most of them is i pump the system down, so i pumped all the refrigerant into the receiver.

You can actually see that that valve is leaking right there, but that way, i let the compressor do the bulk of the work getting all the vapor refrigerant out of the evaporator, and then i just recover from the receiver in the high side. Basically, so just recovering the gas right now and once we get that done, we'll rip this unit out get the new unit back. You know where it should be and start hanging the coil all right. We are slowly getting things together.

The stand is rough right now. We've kind of got it pulled away from the wall, we're getting ready to pipe it in it's all real rough right now, but for the most part, this unit's going to stand about it's going to go in another 8 inches or something we'll decide whether or not We need to run across support or something but yeah, looking good. So far, a little bit of brazing doing the suction line, real quick, we haven't done the inside. So that way we can push insulation out and push it all the way down.

One solid piece so all right we're moving along. We did a pressure test. We passed that we got the vacuum pump on there lines are going inside i'll. Take you guys inside and show you in a minute.

We still got to tape up some stuff, um check, phase rotation on the electrical and everything so we're still moving. So we've got some temporary tape over there just to hold back the foam. It's not you know reinventing the wheel here. It's not the prettiest thing in the world, but the new coils installed.

It's running, we're getting ready to start it up right now, so we've got to trim up some foam from the old holes and stuff. So we still got ta finish that up but yeah. Looking great so far, all right, the condensing unit's running nice and good we're all charged up uh the maximum refrigerant charge, as per the factory, was 20 pounds um. It is r448a, so uh the system is actually down to temperature.

So i'm gon na go inside and check the superheat right now and get that dialed in and then we'll mark the liquid level, and we still got some labeling to do on this unit. So it's uh a little concerning how high the super heat is. 21 degrees. Superheat, that's interesting because usually i've got this kind of blocking off the air.

Usually you don't have to adjust these valves very much, but yeah this thing's down to temperature, and so i'm gon na make some superheat adjustments on the expansion valve um to make the adjustments. I'm just gon na pop up in here i pulled the stem off and we're gon na drop the stem back it out a little bit see if we can get it to calm down, so we're gon na one, two, three, four: five: six: seven, eight nine. Ten. Ten quarter turns and see what that does we're gon na.

Let it sit for about 10 minutes and let it stabilize out looking really good now we're at uh about 10.7 degrees superheating and it's still kind of stabilizing out um yeah, i'm liking. That number. So we're probably going to go outside and finish checking everything out out. There check the condenser td and all that good stuff.

All right final numbers here, my unit's looking great 448a okay, we've got uh. Okay, the sub cooling is really low because you're never going to get a great supply number and i'm measuring on the liquid line. So let me change something currently right. Now i'm measuring sub cooling right there i'll go ahead and put it over here and you'll see a difference.

I swapped the liquid line probe to the liquid drain coming out of the condenser that'll, be a much more accurate point number, but still it's not a valid measurement of sub going on this guy um. It's still going to be all wonky. That number i'm looking at something right now: okay, i see it right there yeah. I was trying to make sense of the piping but yeah.

That's the liquid drain that i'm connected to right now. So all right, if we come over here, yeah, even still you're really low sub cooling number. But again, it's because it's using a receiver - and it doesn't have that added sub cooling circuit, like the newer units have so nine degrees, evaporator superheat, we're really cold in the box right now, actually too cold and i'll show you guys right now. Uh outer air 62 discharge line 126 27 degrees inside the box at the moment, 15 degree evaporator td, 13 degree, condenser td, so we're running fine, we'll just mark all this information down and then i'm going to check the liquid level on the receiver real quick.

We have the king valve front seated on the receiver and the system pumped down okay, so the refrigerant flow stopped coming out right here and it just backed up in the receiver in the condenser. At this point, we're going to go ahead and take a heat, producing device and heat up the receiver and mark the liquid level. So that way, the next guy knows where the liquid level is, if he ever runs low on refrigerant or he's concerned about it all right with the 20 pounds of refrigerant in there, you can clearly feel the liquid line. It's cool right here, cool right here, hot turning right there.

So right here is our liquid level, so we're going to go ahead and mark that for the next guy that way, he knows where it is, went ahead and took a paint marker, refrigerant type. The liquid level marked it right there yeah we're looking good. So i'm just going to double check on tightening and open up the receiver again let the system run for a bit longer went ahead and wrote down some important startup information. My box template what i measured: everything outdoor ambient condenser td, evap td, evap super heat voltage, numbers everything's, looking good we're gon na go ahead and wrap this one up.

We're marked everything's cool the unit's nice and stable sturdy uh bolted into the concrete. We still got. Ta, you know pull off some tape and stuff like that, after a day or two but yeah units operating, we run minimal defrost. So we do four defrosts a day with a 45 minute in the middle of the night, but yeah everything's, looking great just a pretty run-of-the-mill walk-in cooler installation, nothing too crazy.

This one was kind of cool because i got to build that unistrut stand um, i'm still kind of going back and forth in the back of my head on whether or not i should run another crossbar just for added support and the fact that i'm still thinking About it probably means that i'm going gon na go run back by there and just do it real quick, because i don't know i just feel like maybe just one more support bar just to hold the thing all together. But realistically i mean that thing's never gon na fall apart and it's bolted to the ground. So who knows but okay, so i've said this before the walk-in installations are a little bit difficult for me to film, because i have so many people and i really don't like to put my employees on film um. I you did see someone in there.

That was actually my dad. He was doing some electrical work for me, so i don't mind showing him but yeah. I just really didn't um. You know be able to get as much as i'd like to, but it's also hard too because on these installs we're uh, you know under the gun, essentially we're going into the restaurant and the equipment is operating for the most part.

Okay, so you know it's going to take us a good anywhere from four to seven hours to do an installation uh. You know with multiple people there and there's a lot of moving parts, and we really don't have time to stop for even a minute. I mean that all day i didn't even take a lunch. You know all my guys took a lunch, but you know i usually just work through my lunch um and you know i shouldn't do that, but that's just one of those things i do but anyways you know um it's just hard.

I i really wish that i could, you know, make more of a tutorial on it and stuff like that, but i mean i tried to show some of the basic stuff you know when i'm by myself it's easy. I can kind of give you guys my thought process and i've been trying to leave that in the videos a little bit more. So you guys can kind of see like how my brain works. It's it's very random.

You know i'm going back and forth trying to talk to myself and guys so in the beginning of the video, when i was showing like how i was setting things up, i truly do talk to myself, like that. That's how i rationalize things. I i walk myself through troubleshooting steps. I'm asking myself questions what happens here? What happens there? You know - maybe i should do this.

You know because originally i kind of went into this like this really wasn't a quote per se like we didn't plan this job out. I kind of had a general idea: hey we're, probably gon na have to stack something originally. I was thinking that this condensing unit was gon na go over the walk-in freezer condensing unit, and i certainly could have done that. It's just you know, i don't know.

I didn't necessarily want to have to put it over it um, but actually i have another job coming up with a very similar restaurant, where the equipment's out on the back dock, like this one and i very well - may have to put the equipment on top of Other equipment in that particular situation, so you know sometimes you got to do what you got to do, but we'll see we'll see i'll probably have to do a unistrut stand again. Just like i did in this one and um as far as the startup. You know i try to be as as detailed as possible with my startup, of course, there's always room for improvement, but i try to write down the notes. You know i do have to say about putting this equipment up on that stand.

The one really cool thing is it put the electrical panel at eye height. You know so, like you open that up, and it was really nice to have that diagram right there, you weren't, leaning down to try to do anything um that is kind of cool. To think, like you know, it'd be neat. If i could do that more, you know put the equipment up at eye level because uh when it comes to changing contactors and defrost clocks, i actually would prefer not having to get down on my knees.

You know to reach into something to do that: it'd be kind of nice, but unfortunately putting equipment up on a roof like that um. We have really high winds here and it probably wouldn't be the the greatest thing when we have our santa ana wind events when we get, you know 60 70 mile an hour gusts, and it's not the greatest idea. Um, you know up on a roof down down below in that back dock area. The winds aren't going to hit back in there, so it wouldn't be a big deal.

You know also i'm really trying to look at the big picture. As usual. You know i could have very well just installed that equipment, like other people, just slammed it in there and walked away, but i'm trying to think about the next guy trying to think about myself, because i hope that my the next guy is me right, of course, So you know i try to make it serviceable later, so putting the the electrical compartment up against that wall yeah. That would have been difficult and then the customer would have been tripping over the refrigeration lines because they were coming out.

Like all that stuff, you got to think about all that stuff. You know it really makes it. You really got to put some thought into your installs so that way, they're serviceable later later, on down the line. Again, you don't want to give other companies fuel to talk crap about you, so always assume that someone's going to come behind you and try to talk crap.

So do everything you can. I mean something as simple as guys when you do have to do something strange. Leave a note, you know, leave a tag hanging inside, hey, look! Sorry! I had to do this. This is why you know so then at least the other company is like all right.

You know this guy knew that he kind of you know had to do something. Funky, i've had to do that before, where you do something that you don't really feel super comfortable with on the installation. I'll leave a note inside the unit. Like hey my bad, you know there was no other way to do this.

It is what it is. You know just just try to own up to that stuff, so um. I really really appreciate you guys making it to the end of this video um. Obviously, as work kind of slows down and stuff, you know i don't have the most like crazy, technical, troubleshooting videos.

Uh, you know i still have some to edit down and things like that, but you know there'll be more installs and um. You know work kind of slows down, more preventative maintenance work and that kind of stuff. So i really appreciate you guys hanging in there um you guys are awesome. I can't thank you guys enough, those of you guys that have supported the channel via merch.

Thank you, those of you that watch to this point. Thank you. The support that you guys give me is so humbling, i'm so thankful and so appreciative uh. You know it's so crazy to think that what i, what did i say recently, three three years or two years on youtube or something like i don't know it's crazy.

Two years of live streams - or i don't know what it was - it's crazy though it's very humbling to know that we have a lot of people that watch these and um again, i'm just rambling at this point. So, thank you so very much if you guys haven't already, please consider supporting the channel like you're doing right now watching to the end uh consider purchasing merch at hvacrvideos.com interested in purchasing tools. Truetechtools.Com use my offer code, big picture one word and if you're interested - and if you know what you want send me an email and i'll generate an affiliate link that helps me out a little bit more um. You know patreon, you can become a patron, a youtube channel member.

Those are all methods of supporting the channel. Remember live streams monday evening 5 pm pacific and then also i go live on the hvac overtime channel on friday evenings with my buddies uh. There's a link in the show notes of this video. If you guys don't know, i'm assuming you guys do, but i know some people have a hard time.

The show notes you click out of here, where you're looking at me minimize the the the screen. So it's not giant okay and you can see all the data that i input. I can put a bunch of data into the channel dish or in the video description. Those are the show notes, there's links, there's all kinds of my you know: everything's inside there.

So go check it out guys: okay, really really appreciate you and we will catch you on the next one.