This was a Carrier Heat Exchanger replacement on a 5 ton package unit. Nothing too crazy you just have to make sure you get all the proper gaskets in place.
For Optimizing my videos I use Tube Buddy
https://www.tubebuddy.com/HVACRVIDEOS
Please consider subscribing to my channel and turning on the notification bell by clicking this link https://goo.gl/H4Nvob
To support my channel please visit my patreon page here https://www.patreon.com/Hvacrvideos
Social Media
Facebook https://www.facebook.com/HVACR-Videos...
Instagram https://www.instagram.com/hvacrvideos/
For any inquiries please contact me at hvacrvideos @gmail.com
For Optimizing my videos I use Tube Buddy
https://www.tubebuddy.com/HVACRVIDEOS
Please consider subscribing to my channel and turning on the notification bell by clicking this link https://goo.gl/H4Nvob
To support my channel please visit my patreon page here https://www.patreon.com/Hvacrvideos
Social Media
Facebook https://www.facebook.com/HVACR-Videos...
Instagram https://www.instagram.com/hvacrvideos/
For any inquiries please contact me at hvacrvideos @gmail.com
Don't think you're supposed to be able to see daylight through a heat exchanger too it just doesn't seem right must be a carrier right typical spot right at the seams. Okay, we don't get this a whole lot in California, but it's heat-exchanger day today, you gon na be changing this little guy, just a tiny little itty bitty thing: it's got a nice good crack right there, typical spot on the carriers right on the welds, so we'll Be replacing that guy, like I said it's just a tiny little one, it's taking all the panels off shouldn't be a hard thing at all nice, easy, quick one. So this heat exchangers, obviously trashed and I've had this happened before and I can't believe I forgot this again carrier. They really should, but they don't send these baffles this one too.
They have different names for them, but they don't send them and they don't come on the new heat exchanger. So luckily my supplier had them and I had to go back and get them. But these guys right here and then also you want to make sure when you're doing these heat exchangers. These are important.
So you want to make sure you put these on, but you also want to make sure you get new gasket material. Make sure that you have it this heat exchanger came with it. Sometimes you got to ask for it. So if you always want to ask, I think the easiest thing when you're doing these heat exchangers is to ask them for a parts breakdown.
And then you investigate yourself what parts you need for this job. That's the easiest way, because I tried to explain these baffles to the guy on the phone and then I just asked him just send me a breakdown, and then I picked what I wanted and found it much easier that way we got this right here. I got my they got different names for these. What I call it baffles, but I got these both put on and this one's really important got the gaskets behind them, where they're supposed to be that's the old one, so we're just gon na keep assembling.
So I didn't like the gas line, the way that it was running so we're gon na correct that also the insulation. I couldn't source this, this heat-resistant insulation anywhere, so just got some sheet metal. That way, it's not rubbing up against the heat exchanger anymore, so we're just getting ready to kind of set the heat exchanger down yeah, so we're just moving along. I did not have this black rubber material that they were using the seal, so we've got some high temperature silicone to seal this area, and then I also used it to seal where there was black rubber tape behind the heat exchanger surface right here I used high Temp silicone back there to is that we were sealed off and I made sure that that high temp silicone you can see.
That's also what the manufacturer used, because this is from the manufacturer right there. So I made sure, though it's not dripping down on the heat exchanger, because I don't want it to burn, but this is from the manufacturer. It's not me, but my stuffs down below see where it's down there so anyways it's moving along everything's back together. I'm just waiting for another fitting we redid the gas line. We're gon na put a proper sediment trap right there, so before we're done we'll get in here. We put this cover panel right here. So that way we can fire up the heater and burn off all the oil, and then I think I mentioned it already, but we clean the blower assembly out and then we got down in here and cleaned the drain pan. This backside that you can't get to.
We clean that out too yeah and that's it so we're just waiting for the other tea and then we'll finish this up. Yeah. We are running pressures, five, we're just gon na. Let it run and burn everything off.
Watch operate for a bit smoke. It out pretty good right now so kind of hard to see on camera, but there's quite a bit of smoke going we're looking good so far, it's gon na! Let it run for a while. We're not gon na leave we're gon na test operations. Everything clean up our messes.
We got quite a mess going on here right now, okay, so this was a return visit to replace a heat exchanger on a small little five tonne package unit. It was nothing too crazy, but it's just one of those things you have to follow the procedures step by step. You know you pay attention to how you took it apart. Push it right back in these things, really don't take much time at all.
You can get these done in a couple hours I lucked out, because I was able to have a second person, help helping me to bring stuff up and you know, take stuff down and then also he was able to work. While I had to go pick up the extra parts that I needed in different things, I also gave a tip about you know getting a parts breakdown, it's very good that you do that, and I can't believe I forgot to do that on this one again, because There's always parts that they don't send you that you need to be able to visualize and say: oh, I need all that so anyways did all that tested the operations. The the couple things I didn't show in this video was number one. I supported that gas line.
If you saw how, when I when I fixed it, it was now at a right angle, I was worried about someone stepping on that and breaking the gas line, so I did go back in there with 4x4 and properly support it, and then also. I did ensure that the unit had the proper air flow. We don't know what caused the heat exchanger to go bad. I went ahead and changed the gas valve the igniter and the electrode.
At the same time, I put new limit switches on it and then also replace the ignition module or the the circuit board for the machine. But at the same time before I changed the heat exchanger, I went downstairs and found that the return was pretty dirty. So it wasn't getting very good airflow coming back up to the unit, so I cleaned that and then also tested the airflow to make sure that we had proper air flow going through the unit. Now, okay, it's very important that you always do that, because heat exchangers don't typically just fail, it's usually something going on, whether it be poor air flow improperly set gas valve different stuff like that, okay. So, for whatever reason I didn't get video of those things, but it's important to know that uh, you need to check that stuff, okay, other than that there was nothing too crazy about this one. I really appreciate you guys taking the time to watch my videos. Please consider subscribing to my channel if you haven't already, and also popping up right now as some other channels, that I highly recommend you guys check out. We'll see you guys on the next one: okay,.
my supply house always sells us a kit with all of those parts, easy job Service area Orleans??
Would love to see more gas troubleshooting! Love your videos Chris. Keep them coming
May I ask why you use a flex gas line ? And not hard pipe it .
Looks like Hilti high temp caulking…
I have no idea why i watch your videos. Mesmerizing I guess.
Why does the heat exchanger have al those bumps on the pipe, even with the newer one? Do they serve a function
I'm from Italy, here I don't see any of this type… So, why use gas if there is a compressor?? Why don't use the heat pump? (someone can explain because to me it's wired, here in italy most home have a gas furnace, some new house have heat pump and commercial most have heat pump in the form of mini split or VRF system, also in home we use minisplit for the really hot day in the summer)
Why use appliance flex gas line on rtu.looks hideous
Love the dedication and going the extra mile to make sure u do a good job and the customer is always happy. Awesome Videos keep up the great work. Service area Nepean??
Should have changed that rusted support plate
Great videos! So much information provided.
Hey man, awesome video I have the carrier 48 series. What do you think total time start to finish is for a heat exchanger on one of these bad boys? My HVAC guy is trying to quote me for 8 hours of labor
thanks for sharing the video. i have a question? by any chance, do you have an idea why the carrier package unit heating too much? had the thermostat replace but still providing too much hot. Are you in Ottawa ?
99% chance i made that replacement part haha Service area Ottawa??
Why don't they make the heat exchanger out of stainless steel? Is it because of cost reasons or because they want to sell more parts and units?
Poor air flow causing overheating of exchanger, typical
Agree Chris, im changing a heat exchanger, dealer should just include or ask if you want other materials, here in Canada, if you use high temp, instead of a factory gasket, TSSA, will say that we altered the unit, it’s quite sad
Do you ever paint outdoor gas piping? Is it code in your area?
Kinda surprised you didn’t change the front plate as well
If you see daylight through the heat exchanger now, and you keep using it, you're liable to see angels later.
I use fieldpiece STA2 flow meter and works pretty good. Do you use something similar on roof top too?
Makes you wonder if moisture got in there & did something to stretch the weld apart or corrode or both…..
I look at your videos just for the fun of it and ended up learning about the sediment trap for the gas line. Are you in Barrhaven ?
You have such great videos! You can really tell you’re a great tech. Keep up the great work, love love love the videos!
Heat exchangers typically don't just fail? Yeah they absolutely do
why would you need a sediment leg when you are going up to elevation?
I can tell you what made it go bad China
Flame retainer and exhaust gas regulator. You should have gotten a "support kit" . The metal plates on the inside will rust away and block the exhaust gas regulator.
I would have replaced the inducer assembly, too. Flex line would not be allowed here.
Next time you should replace the inducer motor support as well Are you in Kanata ?
Great video….. I work back north east. Most time we end up doing inducer motor and new burners with heat exchanger. Did quite of few of those.
Now carrier/ bryant residential units sucks. They send the heat exchangers in individual cells. You have to assemble the puzzle.
Now it makes sense. HERS Rater certification and RESNET.
Get a return on your investment with efficiency and unit life.
Love the work! If I where in California I’d definitely be applying to work for your company!
those inducer assemblies and gaskets can be a treat to swap out lol
You still installed the dirt leg incorrectly. Gas input should come in at the top driving the particles downward to the dirt leg and the gas exits from the side.
Nice job Chris .I changed out a carrier h x today.also keep up all the good video
done a bunch of these and trane packaged too.
never forget to block supply before burn off. I did once. first indication was the people running out of the building hahahah
In Canada we change a lot of heat exchangers. I never thought to investigate why they fail. I just thought they rusted out but I will investigate next time thanks.
low airflow, short cycling, overheating, condensing, ocean/salt air and all sorts of other issues kill the HE's faster, as if they don't fail anyway.
very often poorly placed thermostats, compounded by the nonsense of 1F temperature swing they've all went to, is root of short cycling 😉 Service area Kanata??
all that silicone, wouldn't want to be the next guy trying to remove it (cuss fest x 99,000) but I'm guessing the unit will be replaced around the time of next HE failure anyway.
have to seal them up somehow!
lets start calling them "sCarrier" which has dual meaning yet 😉
I usually quote everything out. All retaining plates, gas valve, limits, inducer even the manifold. It covers yourself if the call comes back in a few weeks. Good video!