Quote:
Originally Posted by timun
This touches on a really, really common misconception with regard to direct-vented appliances. Your flue should slope back to the inside of the house, not to the outside. The end of the flue vent should be tipped "up" to drain back to the furnace/water heater/boiler, usually a minimum 2% (or ~1/4 inch per foot of length). It should not drain to outside.
Fleury'sOT, you've got a few things going on that are wacky. First of all the cone fitting you took off should be glued on. It's hard to tell but the ice pooling inside the cone may be from condensate in the exhaust stream (the smaller pipe) leaking through the unglued joint into the intake (the bigger pipe). The source of your issue may be that right there: the fact that the cone isn't glued on and it's leaking.
Second of all, what's up with the screws? There should be any. Make sure the pipes are glued, not screwed.
Lastly the pipe should slope down into the house, back to your water heater. If you have access, look at the pipe run on the inside of the house. Both the intake and exhaust should slope toward your heater. If they're relatively flat, or there are any sags in the run, that's a problem that needs to get rectified.
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Thanks for the input timun, The only part that is glued is the cone to the male pvc pipe. Not sure why but the home builder used a screw for the cone and a screw for the elbow.
For the last 4-5 days I did re-attach the cone with the elbow removed and so far no issues. I am going to take a look at it today to see if any minor ice has built up.
I do have access inside the house so I will take a look (and a picture) and see how it’s configured.
On a side note - does anyone know where I can get a duplicate of this set up made or purchased? Cone with the pipe and elbow? I understand a trades person could but just wondering if I can go to a specific store and get it.
Thanks!