This video is a project that we did at my contracting company. A lot of different people were involved. This actually isn't a job that I was involved with the design phase. But what occurred is, is this was a very large home three air conditioners and it had very high relative humidity, both indoors and in the Attic above 65 percent, pretty pretty.

Typically, in the middle of a hot summer day we went in, we did a load calculation and we found that it had fairly new equipment, but it was drastically oversized. So we came in and we downsized all of the equipment and we also added a dehumidifier to the Attic, because previously somebody had put ice in an open cell foam in the attic, but they had left the attic vents open. So he sealed the attic vents and installed a dehumidifier in the Attic. Now the demon fighter we chose was the SD 12 by ultra air and the reason we did.

That is because we wanted to humidify the attic, but we also wanted to control its temperature, because we'd removed so much load from the house. Now this was going to be new conditioned space, and so he didn't want the sensible temperature to go up too high. But we also mostly wanted to get the moisture out, so we used the SD 12, which has a remote condenser, and it also has the dehumidifier portion on the inside that conditions, the air without adding additional heat to the space. So it actually removes a small amount of heat, it's around six thousand BTUs per hour, so about half of a ton of air-conditioning in order to control the conditions in the attic, and so I want to just quickly show the project and some of the process, not That you know the video taking wasn't.

The best was just kind of on the fly, but just to give you an overview of what we did in this home and for those of you who are contractors or technicians just to help. You realize that there are a lot of people who will spend in order to have this problem really solved and in turn that's what we did. We gave them a proposal to solve this problem and they went ahead and went with it. Have a look.

I seen insulation why these things? That's big tickets right. They are a crazy after me, all right, so here is one side of the house. We did two of these divinities on this side of the house. The house was having a lot of moisture issues, straining a little bit fits and starts.

We have a few trap on it. Acting like it's got static pressure, that's holding it back, so I'm gon na look at that. We may increase the trap depth a little bit but looks good is the line cut where we painted it to match everything else? You did do a little touch-up painting paint there pretty good put in to ICM 493 for the condensers, because we've learned that in Florida these things have a lot of issues with high voltage events taking out the inverter board. We don't have disconnects right here because that it's line of sight so that acts as the disconnect VNA zero green speed, their main speaker this one's long.

This is that's fancy here is the other side of the house, a third another ICM 493. Here any number coming out of the ground use this corrugated couple of things we always do. Is we always put the dryers on the inside so that way they don't corrode and our climate. We have such high outdoor dew points and coastally before ever near the coast.

You have a lot of salt air that sort of things they can corrode out really easily and it's also better in cool mode, because that's what we test them and we run them. First, it's gon na protect the indoor TXV, and so since we are run testing in cool mode first, if there is any salt and contamination in the lines you want them to hit the filter dryer before it hits the metering device. Another thing is, which is you know, standard moves, the country, but in Central Florida we see this done incorrectly. A lot is we want to trap and then vent at the unit itself and then make sure that we have proper drain pitch rather than putting the trap outside if we can help it alright, so here is the SD 12 miss edek.

I see why this doesn't have a compressor in it. You don't have to worry about vibrations, just connect to the duct to it just kind of bring it around to pull the air away from the intake. It's very simple: mr. holder exists here pretty much the nicest humidifier on the market and it connects into that mini-split style condenser.

It still does reheat the air, but just not not to the extent that you're gon na have a sensible increase in temperature. It's a slight sense of the decrease, so I can feel a sense balloon. Grace I'll show you what that is on that field. Piece problem: okay, so we've got the field piece.i kilometers in their map to return and supply for this humidifier.

This is really where the rubber meets the road. You can see that we, because this this one has the sensible cooling effect. There is actually a slight decrease in supply temperature, which is abnormal for a dehumidifier, but that's part of what makes it what it is and I didn't set in the air flows. The air flows, not mister, that correct, but but you can see 6.2 pounds per hour.

6.2 times 24 equals 148. So it's right there. I think it's. What do you say max 150 150 at these conditions, essentially yeah, so we're right where this should be and that's and that's essentially how you check in a humidifier to make sure that it's working using measure quick, you don't really need to do anything else.

It's got! No ports on it, so you can't connect to the refrigerant side. That is that, okay, so I lied, it does max as it does have force on it, so we can't connect and we did because we added some charge, that's right, because the length of line says all right. So I'm not mapping yet I'm just showing you what we're reading so sixty one point: four degrees Fahrenheit at sixty four point: eight percent relative humidity will map it to supply air and I can show you what that is supply wet-bulb of 54. So, in essence, the air is cool, but it is a much lower RH than what normal supplier would be coming off of an air conditioner.

I don't know if I can find a dew point. That is an extremely low dew point. That's a forty. Eight point.

Seven degree dew point which is really really low without it's not going to sensibly cooled his space to the extent that an air-conditioner. What if we stuck it up here, but it will be humidify it really we're really really well and consistently to humidify it, regardless of the temperature, which is a really big factor. I mean there is an operating range, but it's going to dehumidifier under all conditions. Hey thanks for watching some of you were gon na want to know.

Did this solve the problem? And yes, it did actually only a few weeks later now we're retesting and the space humidity is well controlled at 50 % and the attic humidity and dew point are very low. In fact, the attic humidity is right about 40 percent and our dew point is also in the 40s, which means duct work, isn't sweating unit isn't sweating, and now it acts as a moisture sink, meaning that, if anything, that's one of the driest points in the house Versus being one of the wettest points and bringing moisture into the space which in Florida that's a really big deal, the customers comfortable, the customers, happy air noise is a minimum now because we reuse most of the old ductwork, and so now your air velocity is lower. All of the ducts are in the conditioned space, so it's a win-win-win all the way around and great great project installers like doing it as well, because they had time to do it. Some people will say well, hey.

I could do a project like that in three days, but in a project like this, you really don't want to rush. We went through did a full commissioning on all the equipment we tested the dehumidifier each individual piece of equipment using measure quick and now that customer is going to have a really great system for years to come. Thanks for watching.