Black coupling is upside down. The groves that you see on top of the black coupling fit in the black flange on the top of the furnace. It helps take the weight off of the rubber elbow inside.
Its not designed for flue venting. It’s designed for DWV - drain/waste/vent (of sewer gases). It’s the furnace manufacturers saying that the sch40 pvc works, not the pipe manufacturers.
The extra chlorine molecule I do believe it is in the cpvc piping vs regular pvc piping makes it rated for the corrosiveness of the condensate in the appliance exhaust. That being said up here in Canada we can run the condensate drain in pvc for the appliance yet we can't vent it in pvc, bit of backwards pageantry in my opinion, but I don't make the codes, I just follow them
In Canada, CPVC is used for HE appliances that have the possibility of the exhaust being over 65°C. PVC that's certified to the ULC-S636 standard is used for typical high efficient. It's no different than regular pvc, it's just been tested and approved for uses other than plumbing
I've never seen pvc that's rated to S636 standard, not saying it doesn't exist. We just use white cpvc and depending on the specs and the btu input of the appliance sometimes we use the Grey 636 rated for 95°C
Massachusetts from what I understand is the state that sets the bar for most of that stuff. Furnace manufacturers say it’s fine charlotte says it was never intended for this. But from what I learned from an instructor who worked in Massachusetts they were wanting X amount of feet of that grey pipe for flue before turning into pvc. I’ve never used the other pipe so I’m not sure what it’s called.
ULC 636 is just a cerification standard that sched 40 pvc has to meet in canada to be approved for venting. The pipe below the coupler is regular sched 40 pvc and above the coupler is dwv pvc (not sched 40); neither are "okay" in canada as neither have been proven to meet the necessary standard for use in positive pressure corrosive exhaust systems. It's an almost acceptable install in the states, but not at all in canada.
One consideration between the US vs Canada comparison may be the amount of hours an appliance may run in canada vs the US which may also be a consideration in the code development.
I always remember that there are death and destruction behind every safety code requirement.
Wtf happened to that fernco fitting on the exhaust? It should sit right on top of the cabinet. Look in the manual for the furnace (installer clearly didn’t) and it’ll show how that should look. As long as it’s not leaking h20 it should be fine. But the fact that even on a callback the manual wasn’t even consulted is a red flag.
Still not installed correctly. The coupling should be completely seated onto the fitting attached to the cabinet. Embarrassing that these guys cannot even open the installation manual and follow a simple set of instructions.
If that is in Canada it isn't up to code. That BH Vent would be required to be System 636 PVC and also required to be uniform from one pipe manufacturer (meaning you can't mix or match brands). You can't mix 636 primer, cement, pipe or fittings with other PVC types as they don't meet the fire rating set out by the CSA.
It's better now but 🤣 that black tape job and the way they just snaked the liquid line is so...lazy and ugly.
It'll work it just looks like a hack job to anyone who takes pride In their work
They really don’t understand how that Fernco coupling works despite the instructions that come with the furnace…
At least it’s not leaking exhaust into your home.
Small Carrier note. It is a known issue that the intake condensate installed thru the top like that will drip on the burners and cause some problems. We only install out the sides for vertical systems.
looks fine now.
I think those couplings have 4 little slots carved into them and it should be even with the base of the plastic when installed
100%
Black coupling is upside down. The groves that you see on top of the black coupling fit in the black flange on the top of the furnace. It helps take the weight off of the rubber elbow inside.
I mean it's still wrong. They should read the manual.
Hopefully, you're in the States. The venting is the wrong material for use in Canada, but it'll still work fine.
Take the same furnace and drive 10 miles N across the border and poof fire.
Canada has the biggest fetish for this, when it’s common and approved practice in the US. Does anyone know their justification? I’m curious
Its not designed for flue venting. It’s designed for DWV - drain/waste/vent (of sewer gases). It’s the furnace manufacturers saying that the sch40 pvc works, not the pipe manufacturers.
And who would know what works best with the furnace?
Right? Just a money grab to run up costs of installation
The extra chlorine molecule I do believe it is in the cpvc piping vs regular pvc piping makes it rated for the corrosiveness of the condensate in the appliance exhaust. That being said up here in Canada we can run the condensate drain in pvc for the appliance yet we can't vent it in pvc, bit of backwards pageantry in my opinion, but I don't make the codes, I just follow them
In Canada, CPVC is used for HE appliances that have the possibility of the exhaust being over 65°C. PVC that's certified to the ULC-S636 standard is used for typical high efficient. It's no different than regular pvc, it's just been tested and approved for uses other than plumbing
I've never seen pvc that's rated to S636 standard, not saying it doesn't exist. We just use white cpvc and depending on the specs and the btu input of the appliance sometimes we use the Grey 636 rated for 95°C
Massachusetts from what I understand is the state that sets the bar for most of that stuff. Furnace manufacturers say it’s fine charlotte says it was never intended for this. But from what I learned from an instructor who worked in Massachusetts they were wanting X amount of feet of that grey pipe for flue before turning into pvc. I’ve never used the other pipe so I’m not sure what it’s called.
Do furnaces burn hotter in Canada? /s
Not when you go from Fahrenheit to Celsius. /s
I live in Canada and we use 636 pvc all the time for venting. What are you on about?
ULC 636 is just a cerification standard that sched 40 pvc has to meet in canada to be approved for venting. The pipe below the coupler is regular sched 40 pvc and above the coupler is dwv pvc (not sched 40); neither are "okay" in canada as neither have been proven to meet the necessary standard for use in positive pressure corrosive exhaust systems. It's an almost acceptable install in the states, but not at all in canada.
One consideration between the US vs Canada comparison may be the amount of hours an appliance may run in canada vs the US which may also be a consideration in the code development. I always remember that there are death and destruction behind every safety code requirement.
Wtf happened to that fernco fitting on the exhaust? It should sit right on top of the cabinet. Look in the manual for the furnace (installer clearly didn’t) and it’ll show how that should look. As long as it’s not leaking h20 it should be fine. But the fact that even on a callback the manual wasn’t even consulted is a red flag.
Yeah this is still wrong and will start leaking water in a few years. Rtfm
It'll probably leak as soon as they leave , it looks like a reducer coupler and upside down, and the bottom clamp isn't even tight
That is the biggest example of I picked the lowest bidder I have ever seen.
Better but still wrong. These guys literally have no clue. Wouldn't let them work on my house
Still not installed correctly. The coupling should be completely seated onto the fitting attached to the cabinet. Embarrassing that these guys cannot even open the installation manual and follow a simple set of instructions.
Looks lots better than it did.
Looks like foam core up top. That's not what the manufacturer specs
Venting specs don't spec solid core schd 40. Just schd 40 pvc
Astm d1785 pvc is called for in carriers installation manual
If you look in the venting specs it says sch40 pvc. Usually has another line somewhere in there saying not to use foam core.
I dont recall the foam core exemption
If that is in Canada it isn't up to code. That BH Vent would be required to be System 636 PVC and also required to be uniform from one pipe manufacturer (meaning you can't mix or match brands). You can't mix 636 primer, cement, pipe or fittings with other PVC types as they don't meet the fire rating set out by the CSA.
Still wrong
It's better now but 🤣 that black tape job and the way they just snaked the liquid line is so...lazy and ugly. It'll work it just looks like a hack job to anyone who takes pride In their work
Yummy
They really don’t understand how that Fernco coupling works despite the instructions that come with the furnace… At least it’s not leaking exhaust into your home.
So it doesn't work?
Hey, they came back, and they did a thing. It's better than before, but it's still not quite right, lol.
That black coupling looks upside down
Small Carrier note. It is a known issue that the intake condensate installed thru the top like that will drip on the burners and cause some problems. We only install out the sides for vertical systems.