Hey this video is a live video from the HVAC, our training symposium, put on in Clermont Florida in 2020, at our offices at Kalos, and this video is with my good friend, Jim Bergman, he's talking about the measure, quick app, which is a revolutionary Diagnostics, app that Connects with a bunch of different Bluetooth, connected tools and helps technicians really make good diagnosis as well as learn about how the equipment is running in a just-in-time fashion. So it's not just a matter of giving the answer, but also instructing the technician as to why that is the answer, especially on the refrigerant diagnosis. Side, so hope you enjoy. Jim is one of the best educators out there.

The video quality isn't great. We had a lot of issues with the video and audio. This was a live video that we did on Facebook, so there might be a little choppiness, but Jim was kind enough to share the slides so hope you enjoy occasion for field service. It's actually designed all around field service.

It's certainly a diagnostic scan tool that does performance testing for your car right. How many think about the obd2 port? You know we got all the sensors built in measure quick. Does that same thing except we're field deploying the sensors? It leverages bluetooth and Wi-Fi tools for a variety of manufacturers, and we can do some things that really nobody has ever done before. The big thing is it walks you through process measure quick, is very process focused and that's.

What I want to cover today is how to use measure quick, a lot of guys that have it on their phone. They started using it. They aren't following the process that we've designed in there to really make sure that assisted with the completion that you find the problem, so you can document the results right and we look at the entire system measure. Quick, just isn't a appliance fixation tool like we're.

Not looking at just a condensing inner, just the air handler, because we have all these wireless probes and bring all the data in at once and it allows it to be done in a whole different way. And then the data are stored by future use for all. How are you improving the process? Well, the big thing we were doing if we use measure quick correctly and we've seen this happen. We had a customer out in Texas that implemented this.

He had a 400 percent ROI in the first year of including you know, buying the tools and using this process limiting the call backs truck rolls. The ability use, lower skilled technicians, increase the efficiency or highly skilled labor. We're going to talk about this, but there's a huge labor shortage of our industry and we need to make sure we're using our best our best text to the best of their ability faster, more accurate diagnosis by the time the system stabilizes with measure quick. I can tell you what's wrong with it right, I mean, if you think about what's going on there, we start the system up, we'll talk a little bit about stability, but literally the time it takes the system to stabilize ten to fifteen minutes.

I can tell you what's wrong with the system at the end of that time: eliminate transcribed readings, fewer errors, faster service, increased customer satisfaction, people that go out and use this their customers love to see the this. The way we're scanning the system now increased technician, satisfaction guys are finding more problems ever found before he's your field, technical support, more professional, look, future service and, like I said, digital data call back someone if you guys that are technicians, I don't know that you really Appreciate this I took this picture is some good friends of mine Jackson, comfort systems, and I love this picture because it shows one thing: you notice that there's a sea of white shirts and blue shirts, all those white shirts inside there. Those are all the people that are in the office. All the blue shirts are the people that work out outside the office right when we talk about a callback cost everyone, that's not in that truck everybody.

That's in that company. That's in that white shirt is overhead. Everybody, so when you, when you guys, are talking about rolling a callback on a truck, you got to look at not only what's the cost of a callback, you got to look at the hourly wage of all those people. All the overhead costs the advertising, the admin, the wages, vacation, training, wages, payroll taxes, workers, comp, general insurance, Health Group uniforms right.

Your facility costs that cost this building the rent. You take all the associated cost of a company, you add them all together right and you divide it in the hours and you start looking at typical company cost between four hundred fifty two thousand dollars an hour to operate all right working hours. Eliminating those callbacks is going to really into your bottom line where to use measure quick primary, we were used for HVAC quality installation standards, building performance, title 24, energy star tab, work, electrical combustion emissions. We go across the gamut for what it's used.

What we are really trying to do with measure quick is take something that's very sophisticated or complicated and put it in a in a visual format that people can easily understand. You look right away. You can see target zones, you can see if things are high or low or in or outside of target. So we can see trends.

This is actually a core tool. That's not opening all the way in the middle, displaying the data digitally and and showing it over time has a huge amount of benefits that we'll cover in here. Just so you you know, measure quick, downloaded on the App Store you can get it at iOS or Apple. It's a minimum.

Iphone 5 Google Play Android 5.0. You can just download it pretty easy to do when you install it the first time. It's going to ask you for a login: it checks for app dates. Now this is one of the most important things if you don't, when we have guys at all time later or not, especially some of the older guys that get a smartphone they'd have never closed an app on their phone.

They have 50 60 apps open on their phone periodically. You have to go in and close those apps up and when you close the app up and you reopen it again - measure quick, it's gon na go back out and look for any updates on there and it'll update your software. We can push you updates to measure quick without having to update your app it's pretty slick, so somebody call the other day and said: hey can you add a refrigerant and I'm working on some new refrigerant? It's not in a measure quick in a couple hours. I had guys head the refrigerant loaded, we pushed an update out and when you guys opened your app up, you may not have realized what was there, but it was a new refrigerant for a user.

Does your login credentials sensi, we'll talk a little bit about that? Has its own permission level, if you're sun sea contractor, you can add and manage your users on there and then on the cloud side, we're gon na! Allow you to access rights. It's like a little bit about cloud, but well. The big thing we're gon na be doing in in a close future here is adding some services on here. Allow you to do things like stream data at the top of measure, quick, there's a little guy in that circle right there.

If you tap on that guy, that's gon na that's going to tell you about you're, just going to tell you your application version, some other information on there. This is our home screen to measure click on here. When you tap the about screen check your current visions and permissions, so when you pull that up there, it's going to open up this this screen. Now you can see here.

I've got permissions to check. These are energy programs. We have that are using measure quick on here. Yours will probably say basic commissions if you're doing sensi you'll have cin see down here at the bottom, but we're putting the ability in.

So you can add your logo to your reports, your company logos and then in this case here from in a development mode and a lot of guys. We have on there beta-testers they're in the development mode. So you might get software that other people don't have, but sometimes you got a if you have a bug, you'll take it in or out of development, if you're on there. But that is where you test your modes and see how things are working.

The home screen is where we got all our system. Information, outdoor/indoor measurements, electrical weather, live data streaming down there that little button down here at the at the bottom right here. This is live data streaming, that's going to be out in February. Here, Brian's group is actually got permission to use that right now we can actually stream data from measure quick to any other user, either a measure, quick user or somebody at the office or even a factory technical support.

Anybody that's got an internet browser can can view that on there. So let's walk through a little bit on the on the process, so a couple of different modes. I want to make sure people understand. There are multiple modes to measure quick up here.

This little house button on here, if you tap on that house button that enables you enter that AC cooling mode heat pump in the heating system, cooling heat pump, her air conditioner, cooling, only heat pump in the heating mode, gas, furnace or boiler. These are non evasive tests we'll talk about. We also do not evasive test for heat pumps in the heating, and then we have a refrigeration application. That's in beta right now.

So these are all the modes of measure quick, so measure quick is not just an air conditioning tool. It goes across the gamut for heating or cooling on there and and then we're also tying in a couple of other apps. So the sensor yeah poor electrical Diagnostics will tie in here and then down below that'll, actually be the blue or the blue vac apps that can bring the results from your blue back testing back in there's also multiple views and measure quick and this down. Here's our view icon on here, so you can switch from the main view to the trending view to the system vitals view.

I got some information on the system. Vitals do go over another second. This is probably the most interesting screen at recently. I measure quick.

I think a lot of you guys will get a lot out of this when we go over this mode, but this is probably one of my favorite pieces that we put in a measure quick lately and the vitals view. If you get these things in line, then the rest of the system performance will follow and I'll cover that in a little little while here just a couple other notes here, working in a tool box test. Oh fill piece: blue red fish. I manifold all these different tools once you put them in your toolbox, they're stored there.

The other thing we do is we store your tool configuration. So if you map your probes, your mappings are stored. If you delete your probes and reinstall your probes, your mappings are still in there. So it'll go back to the way you had it mapped.

So we do a lot with the toolbox, the box management, to make sure that it's managed one of the biggest problems we have in measure quick. Is you have to tell it what each probe is doing right and I don't say it's a problem. It's just a matter: you have to map each one of the probes, so you have to tell it which probes your low pressure, which pros your high pressure. What's on your liquid line and what's on your discharge line, what's in your supplier, so we can make sure that those probes are mapped to the right locations on there.

That's probably one of the biggest problems we have is when somebody says it's not reading on the home screen: it's because they don't have it mapped today, when you download measure quick - and you activate - let's say your field piece probes, they're automatically going to map to a Default configuration, but you could tap those and change those if you need to so we do Auto mapping on that now: here's here's where we get into the meat of things. So when you get into a project with measure quick, the first thing I want to do is deploy your probes all right, because if you think about the process of what we're doing, we need to get the time the systems time to stabilize so and we're going To do some data input and set up measure quick, so the first thing we want to do is get our probes in place now, in this case here I'm working on a cooling system, so it's actually a heat pump system, but I'm in cooling mode here. So I've got my suction line pressure on the suction line, liquid line pressure over here I got clamps on the suction line, the discharge line and liquid line by measuring some power coming in here suction line temperature 68 inches away from the compressor. You need to make sure that you're not too close to the compressor, because the compressor gives off heat and it will influence your superheat reading liquid line temperature near the service valve.

This is a mistake. A lot of guys make all the time you. You always want to measure your temperature wherever you're, measuring your pressure, because there's a temperature pressure relationship that we're trying to determine how much superheat, how much subcooling there's pressure, drops and alliance and components. So I can't mount my suction line temperature all the way inside the house and measure pressure outdoors and determine what my evaporator superheat is but want to measure evaporator superheat.

I have to measure pressure at the evaporator and temperature at the evaporator, where I've got to account for the loss in there, which is typically about three psi drop through the suction line on their return, air wet, bulb and dry bulb temperature at the return air grill Supplier, wet bulb and drive all, but the closest supplier in let out their air out of line of sight of the Sun. So we want to measure it with an outdoor air probe and electrical one of the guys just telling me yesterday he was using a measure quick and he was using just the outdoor temperature from the weather data. You don't want to do that. He said he said.

I couldn't believe how much difference it made to actually have an outdoor air temperature sensor at the condensing unit, because the heat, if you think about we're standing out here on a concrete, the heat, the concrete's hot, it's up to 140 150 degrees. That's radiating! Heat warming! Up the air around it, we're pulling that warm air into our condenser. We need to make sure that we're seeing what's going into the condensing unit measure quick one of the things that that a lot of guys make a mistake on its probe placement. This is probably if you want to get an accurate idea of what your system performance is, and you can see here.

I've got probe one here at the filter girl I want to. I want to have this probe measuring the return air right it right. Next to the filter grill, these are magnetics fill pieces, a great job with us. It's probably why you see me use these more than any of the other probes out there, because they're they have some features on it, make it easy.

It means to use this probe here does not have to be up in the filter grille. It's just right here at the return. Airstream, we're also going to measure air at the supply air and what I usually do is go through the blower out of line outside of the evaporator coil. Just like we have radiant heating and a furnace where we have.

You know we get too close to the heat exchanger. It influences the heating if you're too close to the evaporator coil it'll influence the temperature probe and you'll get a bad temperature drop across there. So typically the first supplier run. What this does is now, as I'm testing all the way from the return out to the supply.

Now who's used measure quicken, seen potential return. Air duct leakage show up a handful. You guys - and I was just dog of people saying wow I couldn't even I couldn't even figure that out, but somehow it figured out. We had returned their doctor leakage.

I got up in there and sure. As heck, I had a leak in my return: air duct. The reason we can do that is because we're looking at design temperature differences of the evaporator coil and the return air on here. So, if you're measuring up here in the evaporator coil and this air could be 74 degrees down here and 84 degrees up here, you that feature will not work.

So it's really important that you're measuring return air at the return, air filter, grill, Inlet and that'll help. You find those problems you might otherwise overlook on there. This in this one, you notice that they have this probe up in the supply air duct you've got to go in a supplier duct. You can't put it on the face of the filter, grill right.

That was one of the mistakes I made when we designed the I manifold was the magnets held it up next to the filter grill as soon as air comes out of a duct, it actually entrains air behind it. If you've ever seen a lot of like dirt around registers at restaurants and things, that's because the air is coming out the register so fast that it's actually called pulling air and behind it and mixing with a room air, it's actually creating a vortex around there. Just like, if you think about Top Gun, when the airplane took off, you saw those contrails come out and turn right. It's the exact thing happened out of register.

What happens if we're not in the registers, we get a mixed air temperature, so the face of the register a lot of times give us the mixed air temp. If you have really high velocity, like you, have it coming up and it's turning and you're at the bottom, all the air is coming out, the top and it's pulling in the room air, and you can actually get a negative pressure on the front of a supply. Air grill and have a positive pressure coming out the top, and it all depends on your ductal design and how that register terminates. So you need to be in the supplier register.

I can't you can't overstate how important that is to get a good good pass. Now. The other thing that this does for us if we have returned air capacities and low we're going to start to look for duct leakage, because this is going to affect our temperature split of our system. So if you got a is, if you're got multiple return, air grills get it get it on your closest to return our grill, seeing it or we can do multiple temperatures.

Now, one of the things we just introduced into measure, quick, which you can have multiple return. Air measurements, as you can, you can get an average return. Air temperature and average supply air temperature. That is one way to do it on an Ohio.

We have systems that are all ducted returns every single room. So then, what we do is we we go in the return air drop. You know a few feet from the blower, but we don't have the issue of you know what right now. The reason we're showing this way is because it is outside the envelope.

It depends on if your, if your system in the envelope or out beside the envelope of how much duct in how much duct click is going to impact performance of the system in this case here, if we got 132 132 degree attic this thing's gon na, be The death of me, we have 130 degree attic here, we're pulling that air in the return air. It's gon na. It's going to be a problem, but out of line of sight of the evaporator coil is one of the key things here. So I want to be up in here where I can see the evaporator coil, so it you know at a reasonably close return.

Close to the system is ideal and then I'll show you some things on duct leakage later in there inside the grill yeah yep just go right inside there grill again, the field piece ones are really nice and flexible. So you can just bend that up and go right inside the grill with that all right, so you could have been pulling a lot of believe it or not. Even though you can't find it at the returned, there's ways I'll show you a slide ahead. How we can check for duct leakage, but but if it picks up duct leakage, there's a pretty good odds that you have it there and I'll explain a little bit and diagnostic.

So one of the things you know, I probably have a slide up this, but one of these I want to explain on Diagnostics: is: is all our Diagnostics or probability base? So when you see a diagnostic pop up on measure, quick and there's a little number next to it, that says two or three or four, that is three or four symptoms of that. So if it says it's a three next to it, there's three symptoms of duct leakage: here's what they are and those are in a minor fault, so I'll cover that another slide here, but it doesn't definitively this measure. Quick will always require a technician. It's going to say you have a symptom of this right if we, if we think about a symptom of low airflow, is low suction pressure, that's also a symptom of low charge right, that's also a symptom of a restricted drier.

It's also a symptom of a dirty blower wheel, it's a symptom of it. So we we can't definitively tell you what what everything is, but I can tell you what that there's symptoms of it and when we get enough symptoms of that, then I can definitively say yeah here's what you're looking at. So if you ever see a measure quick one, you can't clear out, there's usually five or more symptoms of that and we're very sure, that's what's wrong with your system, we'll cover that in a slide coming up here. So I have to get our probes deployed.

We're talking bout, the process of using measure quick here, so we we've got to download it. It's on our phone. We've got two probes mapped. We deploy our probes, we're going to start the system and then we're gon na.

Let things take time to stabilize so now is we're going to start a project, the reason that I'm going over this again its improvement of the process? How do we use measure quick? How do we get the job done quickly? Because if we do this right right now, there's a lot of slides here, but if we do this right in the amount of time that it takes for the system to stabilize that can have the Diagnostics on a report generated on here. Tests are organized. It depends on what you do we're again in February here: we're releasing a service, Titan integration. This is actually working right now, so you can click on the refresh button.

It'll show the projects that are assigned to you. You can click on one of these projects and start and that'll pre populate some of the data. After you pick the pipe type up, the customer that you want to use then you're going to pick the type of workflow we have workflows built in for like blue on this is a refrigerant retrofit workflow. This is for sensi, smart maintenance.

I'm gon na just use that one as an example in here, but each one of these projects should be assigned. We pick the type of work we want to do. We click the test type and then we're going to start the process. So in this case here when we, when we click on that, sensi predict one, it's going to fill in all the details about the project, the job site and equipment information, because all that came off the sensi in there and that's going to dump us right into Measurements, so the idea now is we're eliminating some of the fat fingering of all the data in the measure, quick, which is probably one of the harder things when you're doing an application.

Like this all right project notes, you can add any notes, just specifically the project. Those will be able to be added in at the office. So if somebody wants to type in some notes, here's what I'm here to do. You can type that in and then that information submitted and validated as part of the data entry or you can put notes in and send them back up whenever you complete a section you're going to get a green checkmark next to it right now that what needs To be completed as a measurement, so anytime we get into like a section of it once you complete that section, it's gon na go to red or green.

Excuse me job site details, a lot of guys miss this and one of the things we're trying to do. A measure quick is eliminate the duplicate data entry. So once we have a guy go out once the idea is, nobody has to enter that data again we're going to store that data in the cloud the laser in the mouse buttons are just too darn close on this. You want to drag and drop that pin on the building you're on, so you drag and drop that pin so you're going to get a little dots going to show around that's going to show your physical location and then this flag.

We want to drag and drop that on it's gon na pull in the address here and it's gon na pre populate that address on the on measure. Quicks, you don't have to type it in if the office is entered in this information, it'll pull in automatically otherwise you're going to type that information in this is now the most important one is. My is geo-tagging the equipment. So in this case here I'm on this rooftop, I can drag and drop that pin specifically on that rooftop.

If I'm in a house or something like that, I'm going to drag it over to where the condensing units at each piece of equipment will have its own geolocation every single one. So when you mark that location, when you come back out again, you'll be able to select the pin on the map when you tap that pin it'll pull all the information down about that project, so you can start your work. The idea is here: it's one and done once you have it done once we're going to be able to grab that data and use it going forward dragging on the exact location of the system in each system will have a unique geolocation. It's especially handy what you're working on things like malls or other places where you got equipment that may or may not be yours where you can mark each piece of equipment on there entering your system.

Information take photos on there, you'll see you can take a photo of anything. The photos will now print out on the report, so we'll be able to tie those in there there's a barcode scan on there on the on the right hand, side. If you tap that barcode scanner it'll pull up, there are barcodes and QR codes all over equipment. If anybody in here is a Goodman dealer, if you scan a QR code, it'll populate Goodman model number serial number off the equipment, it'll just type in everything for you, so you don't have to mess with that.

We're doing more and more of these as we got, but this worked across the board with a lot of different manufacturers as arena unit here and as soon as I scan that barcode there, it pulls in all the information off the barcode, most important step profiling. The system now this is pretty interesting when you talk about profile, because with measure quick, we need to know what you're working on right. If we're gon na do accurate Diagnostics, I need to know, is it 20 r22? Is it r410a? Is that 13 stairs of 17 seer is it? Is it designed to have 350 CFM per ton or 450 CFM per ton right? This is garbage in garbage out. If you don't take the time to profile the system and tell us a little bit information about what you're working on you're not going to get accurate Diagnostics, this is a this is a technician that calls you and said: hey, I'm I'm working on a rooftop unit.

What's the most common problem with that right I mean you guys have all gotten those calls it's like. Are you serious? Can you give me a little more information here right? We need a little more information too so targets superheat targets, subcooling type of metering device. You can't evaluate the charge on the system without knowing what kind of device you have. What super heat should I have what external static pressure do I have.

This is the most important step in measure quick. This is where you need to spend time with their technicians. This is where you need to spend time of yourselves, because once you profile the system now this is a this is a profile, is a starting place. Eventually, we're going to benchmark it I'll cover that a little bit further ahead, but a profile every system is a function of its installation.

Right. When I tell you, I got a 13 seer system here I could have a 13 seer system with a 50 foot line set or 150 foot line set or 10 foot wide set. Is that gon na change it in this line set length change anything with the system performance, sure it degrades performance? What about pressure drop between the evaporator coil and the condenser? Absolutely right you might have to you, might have to tweak your sub cooling a little bit higher for the length and lift the line set. So when we're setting this up initially, it's like hey.

What do you have to start with and then we're gon na eventually benchmark that system on their equipment, installation, so we're gathering additional information and measure quick, and some of this is active now. Some of it is for future line, set length, line, scent length and lisent location out here in florida. What's a common thing, we do with the line sets we have a lot of slab homes, so where do the line sets go underground? What what temperature, when looking at things like approach right a lot of times, we're looking at we might be in the house, we're measuring lights that temperature in there what's gon na happen when it lines that runs through the ground, there's water in the ground. What's gon na happen to the temperature, the line set, it's gon na cool down right, so we need to know.

Is that line set running through Nanuk? Is it running underground? That's part of the diagnostics of there. What's the license, we want to know that the diameter, the liquid line, the suction line, how many returns do you have what size are those returns, what size filter type? Do you have what's the size that filter we're? Actually, one of the things that's going to be coming out very soon and measure quick is a filter face of velocity on the filters, because a lot ago, we've seen a lot of filter girls that are undersized a lot of filters that are undersized. So we can look at. We want to typically have around 250 feet per minute, face velocity across the filter, so you got to look at the amount of air, your filter and the pleats, and we can determine if you have a large enough filter grill on there.

Electric enter Electrical information now in here. This is another piece that a lot of guys overlook, condensing unit face and voltages on. Here we want to make sure that we enter each to one of those evaporator fan type PSC, verses, ECM we're looking at things like power factor right at an ECM motor has a power factor between 0.5 5.65 or PSC. You should have a a power factor of 1.0 so again telling us this information.

It's going to make the Diagnostics more powerful, we've also added in capacitors in here, so that now we can collect the capacitor data. So if you, if, since he's picking up a capacitors failing, you can pull this project up and you can see what capacitors are on that on that system. So we're pulling that and then, if also it adds in. If you have a start, assist device or a start capacitor with the start, capacitor size and and the others - that's that's just been added in recently, so once we get all this information and now you're in the the screen where we can look at, we the check Mark zone is that I have all my outdoor measurements in, and that means they're streaming data in this bill check marks mean I'm streaming in my outdoor data, a string of streaming indoor data, my electrical measurements and my performance calculations.

All those things are coming in and we're right now. What we're waiting for is the system to stabilize this little icon right here is telling us that the system is not stable. Okay, so all the readings are in, but we don't want to run Diagnostics yet because the system is not stable. When you guys start an air conditioning system up, does it immediately start blowing cold air? No, it doesn't.

It takes several minutes for it to get to its peak capacity, so you can't evaluate the performance of a system until the system is stabilized. What things would tell us that the system is stable? What are we waiting for anybody know off top of their head? Well might be condensation we're going for the kind of state to come out. That's maybe a good indicator. It's run for a little while in Florida here it's coming out all the time.

What are we looking at? What ratings we'll be watching? What what helps us determine if the system is stable, super heats one super. He takes into account two variables what two variables well, not. I was looking for a different answer: pressure and temperature. So when the temperature stable the pressure stable, we know the super heat stable, subcooling same thing, we're looking at the pressure of the system, the temperature, the system when both those are stable, we're stable another big one, the long that takes the longest believe it or not, Is temperature split because what's happening, we start that system up is the all the refrigerant could be in the condenser and the evaporator, but it's systems the refrigerants got to move around and in equalized out and once the tempter split is stable.

Then we can also determine it's stable, so measure quick is watching the suction line, pressure and temperature, the liquid line pressure and temperature, and also watching the the temperature split to determine if the system is stable or not well, that system stabilizing you do not, in fact, In this slide, here, we want to wait to the system is stable before we before we make electrical readings alright. So when we start a system up, here's here's what I want to talk about with the equipment, refrigerant, migration and and and their charge moving around the system right here, you can see that that both these things are stable right here, the pressures equalize. So I start the system up and we got the suction line temp in the liquid line, temp right we're just looking at temperatures here right now. This, the the the suction line, temp starts to drop, comes back up start to drop again same thing.

Here we got this going up and down. The system is not stable on there right. How does measure quick determine stability again, liquid line suction line, tempter split. So, if we're looking at things that are happening here, I think this one, the next one's the high and low pressure again you'll, see when the pressure starts up the refrigerant right here on the bottom, the low pressure it actually emptied out the evaporator a little bit.

So it dropped down and refrigerants coming out of the evaporator and it's and it's pressure drop down at slowly building back up and it's modulating temperature here and then here we're looking at superheat and subcooling. Now I want you to notice here unstable, unstable, unstable. Yet here we got a green flag right, we're running a rolling out algorithm here that determines that, even though what is this a symptom of right here? What do we see right here? This is superheat, it's haunting a little bit air, our modulating right, it's right at the threshold where we have a low load on there. Is this system stable? If you were to run this out, you'd see this run at the next hour.

You see the TX be doing this right. What does that an indication of what could what could be happening? What could cause the TX v to modulate like that or hunt like that ball placements, one, what else no no way low load? This is actually low load on this. It's causing this to happen low load a lot of times when t -- xv is trying to control when the load gets very low any as soon as it opens it's too much refrigerant. So it senses that it's exp is always a reactive they're, always watching what came out then and it opened and it's and then it's measuring what happened and then it's making an adjustment.

So it's where, if you think about the TX feeds on the inlet of the coil, we're measuring on the outlet of the coil, it's always reacting to what it did right. So in this case here, even though this is modulating right, this isn't hunting and flooding. We talk about hunting and flooding means it goes from 20 degrees down to zero degrees and then back up again. This is just the TX v modulating in the end, so this is actually a stable system, so measure quick can determine if the system is stable, even if it doesn't look like it's stable, because this is a stable as it's ever going to get right.

If we took a rolling average of this, it's it's it's within that rolling average. So after we get the system stable, this is probably one of my favorite screens and I'll. Tell you how this whole screen came about alright, so I was down in. I was down in Florida and came down here and I was working with a property management company.

We got skill levels from if the schools are up here. They got skill levels that start about here and they and they go down to the guys just carrying around a hose and a tank of gas right. These are guys - and I'm not kidding you when he said a refrigerant - was a drop-in replacement that they just dropped. It on on top of the r22 right, so I got mixed gas on every system we go to.

We just got a hell of a mess out there. So one of the things I figured out right away is wow measure quick who's way over complicated. There was way too much information here and it was designed for a guy, I'm an HVAC nerd. I can't help, but I love I love this stuff, but I'm thinking, okay, how can I simplify measure quick into one screen, because if you get these things right, the performance of the system will follow.

Okay, so in this case here we're gon na select your type of metering device. In this case it's a t, -- xv, so you can tap on this. It's going to allow you to select with a t, -- xv, a fixed orifice, a piston whatever it is. You're gon na tap on this to select your airflow okay, it's gon na walk you through a process here, so basically superheat and subcooling, or how full of helpful or the coils are refrigerant.

We're making sure how helpful the coils are refrigerant, we're making sure we have enough airflow we're making sure that our high and low pressure are transferring the heat at the right rate. A lot of guys to understand this I'll cover it in the next slide and approach is one that our industry doesn't. Look at enough approach will tell you more about system operation than just about any other reading when it comes to the condenser. Why is that? Well, approach is how close is the liquid line temperature to the outdoor air? The liquid line temperature should always be slightly above the outdoor air temperature, and what it tells us is approach is: is the system is the coil dirty? We have really high approaches.

A condenser coil, dirty or if we have a really low approach to we have too much refrigerant in the system or is the coil wet right a lot of times after we've washed a coil and it becomes an evaporative condenser, it's vaporize and stuff off there. So approach is one of the readings that we really want to watch closely to determine if the system is operating correctly. If you just get these readings right, everybody gets fixated on performance of the system and they go look at the performance and they're like wow. This is this is complicated.

If you get these readings right, everything else will fall into place. So what we did in here is we have a quick charge method on here when you, when you start this quick charge, that'll walk you through a process. If you have the field piece scale, it'll actually ask you a bunch of different questions, how much refrigerants in the system or what tonnage is in the system. It'll actually tell you in pounds, announces how much gas to add or remove it'll tell you if you need to stop and adjust the blower speed up or down, it'll tell you if you need to adjust your TXV.

If you have an adjustable t, ake city, if you need to or to adjust, TX, be open or closed, we built this out for two reasons: one was for blue-on-blue ons, a at our twenty two replacement refrigerator. So one out one of the things we're doing with this property management firm was going out. They have tons of our 22 equipment and property management companies that want to make that equipment last forever out here in Florida. If you own a one of these property on one of these properties, you want to make sure that that stuff lasts forever they'll.

They don't want to invest any money in changing equipment out. So one of the things they were interested in is refrigerant retrofit. When we start retrofitting refrigerants, sometimes they have to adjust the TXV to get the superheat correct, and this was a way of doing that. So it literally walks you through step-by-step and tells you what to do next and the algorithms are pretty impressive.

We actually figured out how much refrigerant you need to add per either, either by tonnage or by the by the weight, but I'll tell you even down to what line to add it into a couple of things. We look at heat transfer right going back here. Somebody asked why do we, why don't we care about the high and low pressures are in line, so the high end low pressure? Will really we only measure pressure from what reason we only there's only one reason we measure pressure. I don't even know why we have pressure gauges, anymore, temperature right.

I would. I would have a saturation temperature gauge right. That's the only reason we measure pressure is so we can get corresponding saturation temperature. We probably would have saturation temperature gauges if we didn't have 300 different refrigerants that we had to have a scale for each gauge on there.

So we would only measure pressure to get the corresponding saturation temperature, and the key thing that you got to remember here is that heat transfer? What are we doing in our industry removing heat from a place where we don't want it to a place? Where doesn't matter heat transfers a function of time, temperature difference in turbulence? A dirty condenser will drive the sub cooling up on a machine. Okay, so there's two symptoms, there's also two symptoms on overcharge right. I had pressure and high sub cooling. I need to visually inspect this condenser and see if the condenser is clean.

If I clear this fault out well, then the odds are it's an overcharge, there's, also a symptom of a restricted mixup line here right, restricted, liquid line could be the the high sub cooling on there or the high head pressure on there. So if you run across the fault, like the high sub cooling here, you can tap on the targets. A lot of people don't realize the measure quick, every single target has information built behind it. If you see a symptom, you don't know what's wrong with it tap on the target.

It'll tell you what that specific thing means it'll tell you what to do about it and we tied in a lot of the articles Brian's written on HVAC school back with this and call just-in-time education so tip the faults, get more information. The false illness are very, very the the fault. Testing on here works very, very well: we've been down and done some testing at NIST labs on this. We've done a lot of different tests, and this is, if you're skilled, what you do it's even fun to see.

If you're, right or not, so I found this to be quite quite handy on here down here we got five symptoms of a potential duct leak, a lot of guys again, don't realize if, when you see a fault and you're going into Diagnostics, if you tap on That fault it'll tell you what what the issue is, what you need to check on it? What and what that's going to cause? These are great talking points for your customers, mrs. Jones. I just ran a scan in your system and it looks like you have a potential return, a dr. leak.

I need to investigate that first and once we get that fixed and I'll be able to go through and test the rest of this stuff. What's interesting is most the time you clear out the top level fault you're, going to clear out all the faults that are behind it, because there's other symptoms there so make sure you're taking the time to do this think about a return. Air duct leak is that going to affect your sensible capacity. Absolutely it will right.

It's also going to drive your head pressure up because now, instead of pulling in 74 degree air, I might be pulling 83 degree air from my attic right. So once I clear out that duct leakage problem these other two problems can go away, and it's really important to understand that that, in the measure quick now, this one is, if you're going to focus on capacity. This is probably one of the more important slides here and I want you to notice pressures spot on everything spot on I'm running here, actual capacity, I'm running eighty, eighty percent, eighty percent normalized. So I'm going to running at eighty percent of my capacity a couple things measure quick: does here's my nominal capacity 1.5 tons? 18,000 BTUs.

We correct it for the load conditions. Whenever you're. Whenever you look at extended performance table on a piece of equipment, it will tell you, under these conditions, here's what we expect it to perform. We run that calculation and measure quick and we stabilize we normalize the capacity.

So out of this ton and a half nominal, I'm as I'm expecting to see fifteen thousand 911 BTUs, I'm actually only getting twelve thousand eight hundred BTUs, which is 80 % of this normalized capacity. My sensible capacity is at ninety six point: seven percent. That is probably the most important number in measure quick right there. When you're looking at equipment performance, my latent capacity, I'm only doing 407 BTUs.

Why is that? Why is that? I've run a dry, koi yeah? It's it's! It's wintertime in Ohio! I ran running this in my office right now. It's running 13 % capacity, I'm doing 95 percent, sensible heat ratio, there's just no humidity to remove, there's no humidity to remove right. Here's the thing a lot of guys make the energy programs are making a huge mistake. The guys are going out and they're saying: oh we're gon na look at total capacity.

We need to get the total capacity up and we're gon na get things this year increase, so the guys are going out there and they were slowing down the evaporator fan on the system. So they can start to get late and cooling and they were simply transitioning. The sensible cooling to latent cooling the problem is, is that what is the only thing that satisfies your thermostat, sensible, heat right? If you want to increase efficiency of a system shut it off right, that's the best way to crease the efficiency, the system. If the thing is trying to dehumidified 24 hours seven days a week and it can't satisfy the sensible load, it's just going to run and run and run and run that's the biggest problem we have when we talk about low airflow on systems right.

That's why it's such a problem, because we're taking the work that we want to do the sensible work that we want to do when we're converting it to latent load removal and that's great if you have humidity to remove if this was Arizona. This is a very typical problem in Arizona I go out there all the time and we see a lot of systems running at 80 % of their nominal capacity right. I can a speed up that blower and get a little more sensible cooling out of that system. There's no humidity removed there right.

All I have is is a dry climate out there, so these are really important when you're. Looking at this number, that's the number you want to fixate on right. Let's talk about looking at what can destroy sensible cooling on their dirty condenser, what happens to the temperature the liquid light? It goes up so now that liquid, that hot liquids got to go through the metering device and we get an increase in what when it goes through the metering device, flash gas very good, we get an increase in flash gas and that flash gas then is liquid. That's converting to vapor to cool the remaining liquid down to the saturation temperature right that erodes the capacity of the coil.

We don't want to have flash gas if we can avoid it. We want the in temperature as close to the saturation temperature of the evaporator, as we can get it. That's why an increase in sub cooling will increase the efficiency. We have a dirty condenser, we're going to have low most sensible cooling, low, airflow, most sensible cooling right, condenser air recirculation, most sensible cooling measure quick, takes all those things into account and make sure that you're getting that we're that we're not eroding.

You know that we can find these problems on their duct leakage. Sensible cooling is gon na be affected all those different things after we get this system all set, we're going to benchmark the system benchmarking. When you hit the benchmark button, you're going to see all the targets that are driven by driven by the design of the machine go to the centers like this, that benchmark is designed so that every technician going back out to that system and in a future it's Going to set up to the benchmark, this is the the reason that, in fact, this is the big reason we work with Emerson on sensi, okay. I want you to understand why this is so important when initially sensing, when they will install sensi systems on systems, they were just monitoring poorly operating systems.

Think about that for a minute the guys would go out. They put the Sun C system on Ciencias a monitor. It doesn't really know what's wrong until, but until it runs for several weeks or several months, and it's got enough data now that it can say hey something, doesn't look right here right. It can't tell right away measure quick when we set up the system with measure quick and we set that benchmark we're telling sensi where to monitor from right.

This is one of my big big complaints when I talked to the guys that nest one time we're a thigh manifold, I'm like listen all that thermostat does is better control a poorly operating system. It's not taking care of the problems. If you want to really take care of the problems, get the charge right, get the air flow right and people will associate those savings. This is why it, if you take the time and you install that senti system and you benchmark the system first, your performance is going to go up.

The utility bills will go down you're, going to eliminate that second truck roll. That's what we're trying to do and we're doing a benchmarking this system, it assured the efficiency rating capacity proper, latent, sensible, split measurement, normalizes measurements for the installation and allows non-evasive testing going forward. This is a key thing here. Once we set up the equipment once we're.

Never gon na hook up gauges to it again I'll talk about that in the next slide. Coming up so literally in the time it took the system to stabilize. If I either get a green flag telling me the system's operating properly or go through my Diagnostics and I make the repair I'll save those measurements, it's going to save that again that exact geolocation of the equipment. If you forgot the geo locate your equipment, you can just go back into the measurements.

Tab go into the job site, move the equipment pin, and then you can regenerate your report on measure quick on those reports. A lot of guys don't realize you can just swipe them and delete them if you, if you have multiple screenshots or multiple reports, swipe and delete, and you can get rid of those quick tests mid-february. This is some pretty cool stuff. We have a temperature compensated pressure test.

This is actually alive. I was doing this test at the office again here. It measures the suction line, temp, the liquid line 10 or so sorry suction line. Well, actually, this is going to be a suction line.

Temp high site pressure and temperature - I just had my guys switch that on there it takes the date and time stamp measure the start temperature and then what it does. Is it it's constantly correcting this for the change in temperature, so nitrogen actually has a temperature pressure relationship, a lot of guys don't or if they think inert means it doesn't do anything. An irk means it just doesn't react with oxidation or it's not an oxidizer in the system, nitrogen most. Definitely when it changes in temperature changes in pressure.

So when you charge a system up and you're doing a pressure drop test and in it's sixty degrees out, you come back and it's 80 degrees in the afternoon. You better expect that pressure to rise. If that pressures the same, then you have a leak and you lost that in that information. So this will do an automatic, pass/fail and it'll pass that back to measure quick, this one's, probably my favorite one.

This is a dr. leakage test, and so what this does and I've got a screenshot of this going forward, but it uses mixed air calculations to estimate the capacity loss so again, multiple sensors. We have a return. Air dry bulb sensor, a mixed air temperature sensor, you're going to want to use two of those I'll explain that just a minute and your attic air temperature sensor.

So what this is doing here is, if the temperature, in the return, the temperature at the at the blower Inlet, should be exactly the same as the temperature at the filter grill. If it's not, if you're picking up a heat gain that he can only come from a couple of places, where would that keep come from leaking airs one? Where else could it come from radiant gain on the ductwork? So a measure quick, the other thing we're doing here - is we're taking in your tonnage the length of your run, the static pressure in that run, the and we're calculating either the the area on the outside of that duct either. If it's a rectangular run or a round run when you put in this area measurements here, what it's doing is - and you tap on the r-value also is it's eliminating the effect of radiant gain so if it picks up a degree or two and that's normal, because A radiant heat gain we're not going to show you that it's leakage in the ductwork, it's just going to normalize that out.