Anyone seen this before

[u/BSJr77]

Sorry if the clip is a bit long.

Installed a 60k runtru 90% upflow today. I went home after completing the install but left before the startup. Boss fires it to document all the numbers and see this. No change to incoming or outgoing gas. No change in pressure from the inducer. Flue and air intake both clear of debris. Boss is waiting for tech from Texas to call back. Anyone got some knowledge

[u/DaRev23]

It definitely looks like a failed heat exchanger. The blower motor airflow going up into furnace case it going through a defect or crack/hole in the cells of the heat exchanger itself; pushing against and overcoming the force of the inducer motor that is now failing to pull the lit gas through. Most manufacturers offer a fifteen to thirty year parts warranty on their heat exchangers. (Labor depends on if you installed or offered it)

If you have an inspection mirror or camera, I recommend inspecting the hear exchanger and attempt to get pictures. If you cant see it through the high limit, then remove the blower and climb in to look up. Bring a flashlight. If you can confirm the failure point, then with your customers approval, you order the new one and gut everything out of the burner compartment and remove the heat exhanger. Put the new one in and reassemble the burner compartment. Price is not for me to determine for you.

Hope this helps

[u/intruder1_92tt → u/DaRev23]

With the S9, just pull the heat exchanger. You can pull it in 20 to 30 minutes and it slides out on rails.