Carrier Heat Exchanger
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- เผยแพร่เมื่อ 11 ธ.ค. 2024
- 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.
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Great tip about the parts breakdown, it is really getting to the point where you need it for most other parts in addition to heat exchangers. It seems there is always something missing like some hardware, a gasket or something else that we as tech's assume would be included. The same thing goes for auto parts.
Flame retainer and regulator are the names of those baffles. Just did the same heat xer last week ..
Great video Chris.
I look at your videos just for the fun of it and ended up learning about the sediment trap for the gas line.
Right on thanks for watching and taking the time to leave a comment!
Carrier heat exchangers fail after 7 to8 years. Good news is they have a 10 year warranty. I had a school with 22 Carrier gas packs and 21 had seams split or holes at the “U” bend. The parts you’re referring to are the flame retainer and burner support. The induce draft assembly and run cap should be replaced with the heat exchanger. The rollout switch is problematic as well. The by-metal disk gets rusty and the vibration of the unit running can cause them to trip. Just tap it with your finger you’ll see what I’m talking about. I replace them with a sealed adjustable limit. Oh and if the model # starts with 48 it’s gas if it is 50 then it’s electric heat. Have a great day.
Thanks for watching , I will be going live on TH-cam this evening at 5:00pm pacific time to discuss my most recent uploads and answer questions from the live chat. Come on over and check it out th-cam.com/video/1r7KkERXrE4/w-d-xo.html
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!
Thanks bud I do the same change it all!
another guaranteed job in 10 yrs or less, thx Carrier for continuing to make known defects
I live in Sacramento area... I’ve found 7 this winter, all on Carrier 48 series units. Find them all the time.
The two parts your referencing is flame retainer and exhaust regulator.
When I replace heat exchangers I normally replace with new flame retainers, exhaust regulators, burner support assembly (sheet metal that the induce draft motor mounts to) also I replace high limit, and flame sensor.
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Hey man great video, it reminds me of all the times that I've been replacing heat exchangers over here in New York, it is always the same thing, if you asked what I heat exchanger they just send you the heat exchanger, that's it , I don't know why they do that, they should give you the whole thing you make sense all parts all the gaskets and screws but anyways great video again brother.
Thanks for watching Alex
Nice video of a complete big picture service call by as always. Those baffle plates are needed. I had 4 Carrier units without them. Red tag unit, unitl I got them in hand. Lucky it was during summer time. I love how you did the gas line, supported it. Love the" yellow"flex gas line. Always a good service man my friend. Have a good safe day.
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.
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.
I have no idea why i watch your videos. Mesmerizing I guess.
Would love to see more gas troubleshooting! Love your videos Chris. Keep them coming
Had an OLD Sears unit. Heat exchanger was CERAMIC COATED. Care to guess how old it was? House was 52 years old on the original unit. What a freaking tank. Still works today and is dead silent. Belt drive blower with GREASE ZERKS.
Glad you fixed up that gas line. When i saw it at 0.48 i was like. Seriously that looks like a bit of shower hose or something
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
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
Yeah I hear you on that! Thanks for watching , I will be going live on TH-cam this evening at 5:00pm pacific time to discuss my most recent uploads and answer questions from the live chat. Come on over and check it out th-cam.com/video/1r7KkERXrE4/w-d-xo.html
what do you suggest? plywood/random material that would block most of or the entire size of the hole?
@@Bruceman17 use the door that comes off at the curved end of the heat exchanger. It's meant to be cover the supply air if u have a side discharge unit
my supply house always sells us a kit with all of those parts, easy job
Good vid Chris ... And yes helpers are underrated ... Lol ... I always liked someone with me ...
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You have such great videos! You can really tell you’re a great tech. Keep up the great work, love love love the videos!
Nice job Chris .I changed out a carrier h x today.also keep up all the good video
Thanks bud , Thanks for watching , I will be going live on TH-cam this evening at 5:00pm pacific time to discuss my most recent uploads and answer questions from the live chat. Come on over and check it out th-cam.com/video/1r7KkERXrE4/w-d-xo.html
I’ve done countless of these in Pennsylvania. On a good note they are the easiest of all brands to change.
I agree they are super easy!
Great videos! So much information provided.
Lucky on your supplier’s stock!
Yeah for sure!
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probably everybody forgets or doesn't know, I wonder how many they have in stock..... probably dozens
Now it makes sense. HERS Rater certification and RESNET.
Get a return on your investment with efficiency and unit life.
You’re the best dude. Keep up the awesome videos please
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
May I ask why you use a flex gas line ? And not hard pipe it .
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.
Nice Hair Cut
There really needs to be a third party manufacturer that makes these correctly at half the price
Makes you wonder if moisture got in there & did something to stretch the weld apart or corrode or both.....
Kinda surprised you didn’t change the front plate as well
Nice Job!
Next time you should replace the inducer motor support as well
Rheem's do the exact same thing. It has nothing to do with brand. All rooftops crack at the welds lol.
👍. I would’ve never guessed that a carrier would have a bad heat exchanger LOL. ( I’m kidding )
I know right!
Go figure.
What are the big ass dents for?
creates turbulence assisting with transfer of heat to the outer surface of the pipe
nice video
Nice big crack on that heat exchanger
What was the original complaint? Or did you find the split heat exchanger during routine maintenance?
It was a pm
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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?
I don't know about heat exchangers, but hot combustion products are hot combustion products and the stainless exhaust pipes and mufflers you get for a car are about twice or 3 times as expensive as the sections of galvanized exhaust tube they'll sell you at the auto parts store.
Someone absolutely needs to start making these better using stainless or titanium or something!
@@44R0Ndin if you Google why heat exchangers are so expensive, it's because they use rare metals... So it's absurd this one would rust, regularly fail AND be expensive, PLUS a 45 day lead time! They are out of their damn mind if they think this is good for their company!!!
@@jonhinman2471
I think you have catalytic converters and heat exchangers confused. They're not the same thing. Catalytic converters such as used on your car contain high amounts of Platinum and other rare metals, because at the high operating temperatures in a catalytic converter, those elements encourage the further reaction of unburnt hydrocarbons and nitrogen oxides, improving the emissions of your vehicle.
Heat exchangers just passively move heat energy from one fluid to another fluid, while keeping the two separate. A radiator is technically a kind of heat exchanger.
The only time heat exchangers use weird materials is if one of the working fluids is highly corrosive or otherwise reactive. Those are the only ones that have any chance of using "rare" metals.
Most of the time, heat exchangers use either copper alloys (if size is the major concern), pretty ordinary stainless steel of the same grade that car exhaust pipes are made of (if cost is the major concern), or even aluminum (if you need a balance between cost and performance and corrosion resistance).
Technically, since it does exchange heat between two different fluids, any radiator or condenser or evaporator is "a type" of heat exchanger. However, usually it's meant "between two gases, or between two liquids". The heat exchanger in the natural gas fired heating section of a package unit isn't using anything really that "rare". Cost-optimized units use normal mild steel, durability optimized units use low-grade stainless steel same as car exhaust pipes.
The reason that copper is sometimes used is because of a constraint requiring maximum heat transfer capacity in the smallest physical dimensions, which requires copper because that's the best conductor of heat or electricity aside from Silver (which is better used with other characteristics, usually leveraging the unique types of chemistry you can do with silver, such as photographic film, or as jewlery).
Nice video
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)
Heat pumps lose efficiency in cold weather and dont give too much heat. They could be used if there is no available gas and with heat pumps you need heat strips as a supplemental heat source.
I use fieldpiece STA2 flow meter and works pretty good. Do you use something similar on roof top too?
Looks like Hilti high temp caulking...
Good clip
Why does the heat exchanger have al those bumps on the pipe, even with the newer one? Do they serve a function
Do you ever paint outdoor gas piping? Is it code in your area?
Thanks for watching I will be going live on TH-cam this evening 4/1/19 @ 5:PM (west coast) to discuss my most recent uploads announce the Sporlan Bq TEV kit winner and answer questions come on over if you can th-cam.com/video/WLQxwzT65SU/w-d-xo.html
I noticed you use Fieldpiece testing equipment. How do you like them? Especially your manometer. I have an Extech, its nice because the readings don't jump around but it only reads up to 2 psi.
I love their stuff, and they have great warranties to back it all up!
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
I am quoting one right now for two guys 8 hours so.....
HVACR VIDEOS wow! Good to know thank you
👍
thanks for watching Clint! Hey I am going live on TH-cam this evening 1/21/19 at 5PM pacific time you should come over and check it out. th-cam.com/video/dUMYKIdTCR4/w-d-xo.html
why would you need a sediment leg when you are going up to elevation?
We call them drip pockets and they are used so that anything in the line will drop into them and stay there instead of going up and fouling the gas valve or other parts of the heating system
That unit sure is filthy, which is likely one of the reasons for failure. Also, these guys just rust out after time and use especially when oversized and that dirty in the cabinet. Heat exchangers are exposed to high temperatures and acidic noxious gases causing corrosion.
If your parts guy didn't give you everything needed, they need a little refresher. All our counter people know about the regulator and flame retainer requirements. But we are also in Chicago and deal with the RTU'S with gas heat every single day. If you need that insulation, it should be available, but just needs to be ordered from the factory. The fact it is in such bad consition i due to the dirt conditions and high heat giving it crispy critter look.
I have sold these exchangers for 17 years at the counter level. Always get the regulator and retainer and ALWAYS seal with hi temp silicone. They don;t come with because if I remeber right heat exchangers and the regulators are manufactured in different plants. I have had guys not seal heat exchangers and can't figure out why there is so much CO in the building.
If you are a legitimate contractor and deal with a Carrier supplier you can ask them for access to HVACpartners.com and find all the parts lists and drawings you could want. The exact same ones we have access too at the Distributor level.
Thanks bud, yeah they have not been able to find the insulation for me I'm using Sigler as my carrier distributor out here. Like I said in the video I really dont rely on suppliers getting me part numbers anymore I ask for parts breakdowns and do the work myself because I'm sick of getting burned. It's very sad because I can remember a time when the supply houses handled everything from parts and even gave tech support but that has slowly been dying off as the new blood comes into the supply houses these days. But I also understand times are tight and they need to cut costs to stay profitable, especially with majority of the manufacturers selling direct to customers these days. Anyways thanks for watching and taking the time to leave a comment!
@@HVACRVIDEOS get them to sign you up for hvacpartners.com. You'll never need to call them for anything more than placing the order with the part numbers you found yourself.
You didn't get new draft inducer mounting plate.you put the rusted one back on.why.
Not in the industry, but a question - why are heat exchangers not manufactured with seamless tubing (apart from expense)?
That is a great question and I wonder the same thing!
Only other thing I can think of - planned obsolescence.
Seamless would increase the cost..
Its cost, and even with seamless it will just rot out on the plenum side at the joints. They also have SS heat exchangers available for locations that will have their heat short cycling in warmer areas like Texas and Cali. The thought process from a design perspective is that if you cant design to have the delta-T across the exchanger large enough or run time long enough to drive the water out, you spec. the stainless one.
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the heat exchanger is cracked if you can see daylight.
replace it immediately as it is a carbon monoxide hazard
Should have changed that rusted support plate
lets start calling them "sCarrier" which has dual meaning yet ;)
Couple winters ago I had a high end restaurant with 10 of these puppies 4-7 ton.
3 had bad exchangers- burn through on one of them.
Carriers aint too hateful to change until you cross 15 ton line. Then you have to have a helper cause they're so damn big..
Here in Ohio 10-15 years and they start to fail. They're aluminized and a weak spot mixed with condensation and viola a hole.
Usually change these out in snow .
Good vid and advice CHECK GAS PRESSURE- I know some guys set it by ear! Usually way to high -early failure. Crap air flow as well.
I would add to the replacement the flat plate that bolts above burner.
U shape with holes,flat plate with holes and the solid plate. Noticed the rust in the video. . I've always replaced all 3. Just a thought.
Flame regulator flame retainer and flue cover meant to include carriers names
Heat exchangers typically don't just fail? Yeah they absolutely do
Chris your a commercial guy, why not keep galvanized pipe on hand
I just dont use it enough Bryan , Thanks for watching , I will be going live on TH-cam this evening at 5:00pm pacific time to discuss my most recent uploads and answer questions from the live chat. Come on over and check it out th-cam.com/video/1r7KkERXrE4/w-d-xo.html
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.
On the news all day here in Montreal... 35 kids in a school got carbon monoxide poisoning . 10 of them passed out, other, threw up. I wish we could get a TH-cam video of the repair. Much to learn.
If you see daylight through the heat exchanger now, and you keep using it, you're liable to see angels later.
Yep, CO poisoning is no joke. And no matter how clean the gas burns, some CO is produced.
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!
So, you wouldn't want to be the guy scrapping the unit then? I did alot of that when I worked HVAC. The real fun stuff is the black tar-like stuff they use to seal returns and supplies on some roof-top units.
@@bairfamilyfarm1336 I'd rather be the guy that saves 2 unpaid hours breaking it down and hauling it off, while watching the scrappers fight and slave labor, burn their fuel and tool power to make $30 at scrap yard.....
most don't realize it hardly makes them anything after factoring in all the costs, but I guess their time is free? granted there was a point in time, you could spend $100 and make $600+ in one lazy day, that's more like spend $100 and make $150 or less now ;)
99% chance i made that replacement part haha
Aren't they called regulators
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 ;)
Poor air flow causing overheating of exchanger, typical
Y are the baffles important?...y is that 1 baffle in particular important?...the original baffles were too gone to reuse?
Yeah the original were too rusted out, the baffles help to properly control the flame
@@HVACRVIDEOS quick question b/c I cant get a hold of anyone from carrier....but I have a trailer sized rtu(I dont have the model/serial #'s at moment) it is cooling only....it has a 2" indoor blower motor shaft....exactly what bearing grease should be used for the shaft bearings?thanku for any info
Looks like a bunch of shitty exhaust piping from Pep-Boys. Rot out especially if they short-cycle the heating and you get a bunch of water in there.
Hahahahahahahaha ! 👍
Great video chris and really nice job done!. We do that type of job more often here in new york.. thanks for all you good tip and invite you just visit my channel (beta) just to see your opinion on my videos!!!Thanks again!
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.
Why use appliance flex gas line on rtu.looks hideous
I can tell you what made it go bad China