 This video is brought to you in part by TrueTech Tools quality tools essential support What's going on guys? So today we're winterizing the chiller and the boiler system here at this old church It's an aqua snap. It's a plate heat exchanger on it. It's not got a lot of surface area So we're getting drained out got another guy here to help me Actually watches my videos, which is kind of funny. So we got 255 or 50 gallon 55 gallon barrel drums there and What we're doing is getting We got to get the water out of the system now this goes To a big old air handler up there above the ceiling What they've been doing is running just plain water and then every year They got to drain it or refill it and then they got air in the system and it's just a hassle These are some of the one McLean boilers. I just did the service on these That's gonna be our hose to get the Like all into the system we're gonna pump it in through the boiler there So we're gonna push it out with gravity because you figure the air handler Even though we're coming up out of the basement The weight of the water is going to shove it all down and then we're gonna fill it back in that way, too Which what we're gonna do is we're gonna measure out the glycol into The big container then we'll know how much we've taken out and then we'll be able to pump it back in Yeah, it's better than what it was. Let's start in close. We just put a block under there When I open this that'll give you some relief now Take the pressure off of it, and then I can open that up I'm gonna close this back up so we can get your stuff. Yep. Go. This is their ladder So I got to go up here climb the chicken Chicken ramp here get up here to the air handler but All of our fancy controls on here, which is ridiculously crazy said we're Going to Let the water pressure like a water tower shove it down so I'm gonna go ahead if you right now hit this See if water comes out, which I know we're gonna put a valve on there, which It's gonna make it a lot easier So then it will replace that auto-believe All right, Joe. Go ahead Pressure's still a little bit there yet Now I am Okay, I'm gonna go ahead and loosen this thing up so we can pull through. Yeah, we made the mistake and not turn the pumps off But you can you can hear it suck in big time now Works nicer than foam because phone got dial it and all of the crap We already got 50 out of it It's down there, but you can see it's I should get that thing straight We might not have a lot of pressure to push out either it's slowing down a little bit, so we're gonna hook a Meal to female on there and suck it out of the system It kind of stopped all the way to that Tower water there if you want to call it that filled up, you know probably 20 some gallons See how this does may work may not. I don't know see if it works I Was starting to really slow down, so I shut it off and it's sucking on my finger So he's going inside to shut it off. We ain't sucking air into the boiler about 75 gallons Maybe we don't need as much as we thought we would I mean that's about 65 gallons something like that. Yeah, we'll stick it in there run it for a while And we'll see where our percentages are at we don't want to go too high because then we won't have the heat transfer that we want There it goes All right, so I stopped the pump I'm gonna run upstairs then if you want to open that back up you should be okay, and I got it valved off. I Know but don't you want me back upstairs first? I don't like that. It looks crooked or Dogs hind leg. I don't Don't have to do about that. It's threading in there though. That's what sucks All right, as you can see the new one is a lot better shape than the old one, so Let's get this threaded up and get it in there. This should do a little better than what it was You know Looks a lot strer and what did before that's for sure. This is a dedicated refrigerant hose. I used to blown out Things with nitrogen or run a water through it doesn't have an end on the other side. So it works out good that way And we got our bucket here All right, Joe. I'm ready Open that up Let the juice loose. Well, it's been a while at least 15 20 minutes But I just heard some gurgling of water down there, which it's got to come across and then Come up and fall down which I doubt we got everything out of this coil because it's below grade but we're pumping the remaining remaining in there we got the 55 gallons in and I'm starting to add some more which we should have full coil water here We got the chiller that was completely empty, which like I said, it's just a plate heat exchanger. So it's not very big We got a few other areas of the church here. That's Probably full of water yet too. So the thought in theory of this was the water level comes down And then it goes back up with glycol versus I'll go with his idea over over mine So he just stopped it while I was adding oil had some up here. I'll see yanked out my One for my circulator. You can see the seals down there. They're not, you know encompassed but It definitely Better than what it was then we're gonna use our fracknometer and we'll find out where our levels are at but We've got to let it all mix together first for we can get accurate accurate readings There we go There we go. We're getting there start to throttle it down. So we don't get a bunch of Finally got my first splash, but there's still air coming Yeah, it's starting to hit now finally. It's coming and going whoop got it Yeah, I started getting solid flow Then now I kind of cracked it a little bit and slowed it down. So it's coming and going and since we get this filled up We'll kick on that circulator and get her all mixed together All right, it appears we got solid water. I think I'm gonna go ahead and kick my pump on So you get the fan something something all right, so we have a Damper here that just kicked on That's got another thing of air Quite the conglomeration here Got one coming in going back. You got a bypass basically so I can go through here. It's kind of Interesting Open less seat close more heat There's our control guys of stuff there Not seeing the circulator pump call yet may have to kill these I Killed power to it and it started reset Got some old pneumatic controls here. I got into the computer system and Got it running. I don't know if this one here is on the same Deal as the other one You can see you got another boiler over here a little burger so Yeah, it's not calling those are gonna stop these variable speed Circulators, okay, it must work because their handlers running now now this one here said open for less heat close for more I want this thing to circulate Theoretically it don't look like the circulator pump is calling because the VFD is Nothing's marked one way or the other so you don't really know exactly what they're trying to do Yeah, pumps not calling All right, so we got our circulator pump running and we have our valve cranked a hundred percent So we should be flowing so we should be flowing some heat now if the boilers running like it should so let's go look and see All right, just calling so it says yep, it's spinning Kind of let it do it's a little thing or just a little drizzle Starting to get a little green. I think here it comes. I got it cranked just a little bitty bit There a couple there they're tiny So this one here has got boilers that have had issues with air I'm hoping because I thought that we had some issues with the control boards possibly acting stupid All right, so we've got two on the plane of Slim fit we've got two of them here. We've got two circulators They come together in parallel Come up here to our top Got water movement coming over here to our air separator Got our pump down here, which she would think is kind of a corny design Old-fashioned tank expansion tank no bladder type Comes up to here. This is the most confusing mess. We've got valves here that Modulate it's really confusing Got the chiller out here. We like I said, we just finally got it I labeled things with arrows and what they do and how to bleed it because we got a big old air handler up top Finally took care of all that nobody labeled none of that crap So everything is so much easier now to find So over here on our control system Just got in talk to the control guy Figured out what my numbers were Made sure it was on and off. He ticked it on and off. It is the boiler right there It's calling made sure we had voltage going to it We got it over to it. So come over to here And I had a look at my book. So 16 here and here is your thermostat call for heat Come here and run ac volts We come to it. I've gently got in here because I didn't want to move nothing And we show no voltage. We go to ground Got voltage here. Check the next terminal going up. We got voltage here So we are looping voltage back and forth It should be calling So when we come down to here Basically, he doesn't say that it's even calling for it since standby Nothing's circulating this boiler is 68 degrees. There's boiler temp 68 degrees System temp 118 Same thing. This is a shadow boiler. That's the politically correct term Pressure switch is not accurate. It's not shut down on that. It would be flashing if there's an issue Outdoor temp is 43. So that temperature sensor seems to be working right She's not calling for nothing. She's not locked out. That's what's kind of crazy here We can unplug this here I thought this controller is maybe going bad. It still says network flc standby We can come over here to our meter just Not that the voltage didn't tell us what we needed but We can go between these two terminals to see if we got resistance between them 0.7 ohms 0.1 ohms Added some dielectric grease to my connections Uh, not so much this one But inside the meter. Holy crap. It made a huge difference I mean 0.1 ohms that's unheard of These are american made leads are made for uh, these are called Probe master they're american made unbelievable. Joe sheer gave me these at the uh Florida show down there and man these things are awesome You got to modify them a little bit. They got this weird finger protector thing, but These things are awesome So far they've I've had them what since march So nine months of being wound around it which aren't supposed to really do So that's plugged in there Yeah, the blue p14 that's your supply and return sensors So that's those Do we have double ups? I don't know if they're stealing because see we've got our own right there And I don't know if they've tried to stick the ones from the boiler in there. I don't think they did Okay. Yeah, there is sensors underneath there There it is The other one So it is reading its own sensors for that and then the control system has its own sensors Okay, well, we are technically only like 43 degrees outside and it's thinking system temps 118 Even though the boiler is 68 Thing is i'm not sure why we're picking up all that extra temperature My thing i'm doing right now is narrowing down. Is this an issue with it thinking that I am warm enough because it thinks the system temperature is 106 degrees and you feel the boiler. She's not been warm for a while Feel the circulator. It's cold this one here Uh, this one here might be running Yep, she's running now it worked on sunday. They said come down here. You can see See that it's running So what we got going on here is it thinks that the uh temperature doesn't need to be that high So let's go ahead and play with it a bit. Let's check some says some settings here And then I'll let you know what I changed or found whatever Now I thought we were calling to the attic air handler, which is for the main sanctuary area So when I come in here and I stick my finger in the little tear that i've used in the pasta field, they're both cold Uh, I don't know it should be recirculating Around let's see what we got over here for heat. It's not even hot. So we're not even moving water So we probably got air in this stupid thing again. This is an issue I've had in the past Let's go over here. See if we got warm cold there Thumb check there ouch. Now that's that's hot right there I don't like that. That's definitely warmer than I want to put my finger on which makes no sense because This right here should be hot But yet it's not hot which makes no sense because the water's got to go this way So water comes through goes around over to here because it can't go that way because it hits the ball valves And yet it's hot on top. This is screwy as flipping setup. I've seen it's it's such a piping nightmare It's been a nightmare all the way around just a pure nightmare Yeah, see it's not even hot here. So we've got air issues We got air issues again The whole reason why we switched just to glycol because every year They were draining this boiler down or the Chiller down because it's outside And it run the straight water And then when they turn it back on they get air in it and it was because one particular person was afraid that If there was a leak that it would damage more things with the glycol than what just water would do But every year we fought this battle of air So the way I ended up figuring out how to bleed it because I have an auto bleed upstairs I have a bleeder over here. You have an air separator Because everything's in parallel-ish areas. Okay, so you come in here through the Circulator up T's can come this way it comes across To there comes down and go through the air handler back up You got a modulating valve here. So right now if it was to call through it would come through Going down And back so right now the water is going to come through T over that way. There's a check valve there Get pulled in Goes across In this position here with it going flat and straight down It's occupied. So we're really just occupying the downstairs You're basically just running the water on through it's going in a circle So in reality you're just going on through and going around it's it's confusing when you don't think about it Or when you actually think about it But the circulator there partakes of some of that water takes it down and jams it back to here So it's just kind of going around doing a loop thing And then it steals a little bit off that T over there because down through the coil and comes back up to here All right, so we're going to go up here in the attic Look at the air handler. This is where I had to Valve it off the last time and force it to be bled downstairs. I It sure acts like it's got air in it Circulators are running, but it's not warm up here. I got a auto bleed here What we ended up doing or I ended up doing Was stopping it on the outgoing side here and see an Occupy It actually stops the flow a hundred percent the one downstairs just partakes of it kind of screwballed An Occupy just lets it recirculate This had worked for two weeks. No problem. Now all of a sudden something got Changed. I ain't sure exactly how this happened, but so this basement area is all done by this air handler that we've been working around Basically, you just got two air handlers This one here and that one over there They're in parallel. It's just a big loop. It goes around But for whatever reason Just turns into a A major pain. I mean, I literally had to hook that hose on there because it had so much air and it just was going all over a little spitter spudders And so What we got now is the upstairs cannot come back. I stopped it So it's got to go through here It can go all the way here and I've closed this So it's got to go that way go through that check valve goes down through That into the circulator through the coil Back up through the coil Up and through here through the valve this valve is basically like this pattern and go through or this way So with it being Straight up and down it stops the flow from going this way But it does allow it to come up from the bottom and go left When it comes up from the bottom and out because it came down back up again It went around to the left and goes around to this loop the loop It goes back over to here Go over there It goes backwards, which would have been better if this would have been put over here So it's got to come over here head dead heads into that closed valve. So it has no choice but to go this way Comes through and on out and circulates around and around If we put our finger on this It's not hot the boilers were was calling So what I ended up doing the last time Is I closed this valve here which ended up Fortion it through that loop that I just showed you So I closed this And I'm starting to feel it get a little bit warm And then maybe do to close again And this is how I got the air out of it the last time Because there's no good way to get this air out of here. It's it's kind of a I don't know. This is an existing System that we tied into And it worked and it has been working just every year. It's a battle to get it blood And then usually you're good to go after that Whatever reason Things just took a dive. We're getting some air there I am warm definitely warm And it's looping its way around so downstairs air is taken care of Hopefully upstairs is good because like I said, I stopped it coming out of the coil So any air should have been trapped in the coil then into the bleeder. So we're going to go up there Do that real quick and open it back up see if everything runs So I just opened that valve coming out of the coil and I'm waiting for this one to get warm This is my incoming side. So it was starting to Okay, it's getting to the point where I do not want to leave my thumb on it We're good there It's come out at 84 and rising. So it's cranking some air That's why that water don't feel very hot coming out of the coil because it's going in the duct work where it should be going I found out It's the first time I've had a glide call So I was looking at burst factor versus freeze slush And so I probably needed to add some water anyway Because currently my burst is like negative 30 and we're never that cold But my slush was around five, but if we should never slush you think about it if these things are running So and it's not a chiller. So we're running a boiler So we're never going to be at five and worried about slush because they're going to be hot water My controls guy used to be an HVAC tech and He's he's always got a good answer for something. He's the one that kind of helped me figure out how to get this thing bled He's always been helpful And he's doing everything that I'm trying to do with the new guys here And online is to just try to help and not discourage and run everybody down I know he don't watch my videos or nothing like that because You know to somebody like him, they're boring. We got that I just want to double check a few other things in the book here just to make sure Right now. I mean, we're we're holding pretty good. We got the outdoors Sensor on there. It's trying to hold about 134. So everything's looking pretty good Well guys, that's going to wrap that one up. What the biggest issue I think here was was the glide call It's got some foaming action going on. It was a little high I think at the 34 mark which we calculated it in and it kind of can't end up being a little on the the higher side there It was recommended to me by one of the other guys to go with like 29 percent. So I think what happened is when it got shut off it basically started to liquefy and the air separated and then it either pocketed in the system, which is what I think ended up happening And then the sensors the temperature sensors got hotter quicker because They had no water removing the heat from them and then it Didn't call for heat from the boiler And the boiler didn't run so the water wasn't warm at all So even if it had a little bit of air in there, it wasn't completely locked But I think it just shut down because of that. So once I did that Uh, let it all out and everything it just seems like that took care of it. Um, it's working good Uh, I wrote on the paperwork that we may need to come back and add a little more water to it And it flushed a little little glide call out, but It's kind of a trial and error thing right now I was siding on the air of caution All right, like I said, I haven't done a bunch of it we can get down to Zero to negative 10 15 just depends um When it's like stupid unusually cold but anyhow But there's like I said in the past it it's a difference between burst and slush Slush we're not worried about since we're using it in a boiler Burst is what we're worried about so I got the Sheet downloaded from the factory on what exactly those percentages are at because you can't just go off your Anometer Uh, because it usually will show you the Freeze protection not the burst And so that's about it If you guys enjoyed the video and you want to see more like it, please hit the thumbs up button And we will go from there until next time guys. We'll catch you on the next one later