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Hey I have a guy that put in a slightly larger furnace, and it is tripping on high limit due to supply duct to small.
Can I possible block off a burner???

Display showing dots and black squares?

Thanks for the info. Much appreciated!!!!!

That's what I kinda plan on doing, thanks for the help!!!!!!!!!!!

Just took CO readings and it was off the scale, so i am a commercial HVAC guy, can you give me an idea how hard it is to change out a secondary heat exchanger and time involved?? (Still waiting to...

Customer was complaining, and when I arrived I could smell it. Then I went over to the exhaust and it just smelled rich to me. Hope that helps.

Thanks for the help!! Will return and take CO readings on exhaust and let you all know the results!!

OK relax, here is some data. Found 4 inch filter very plugged (removed), supply temp. at 100 degrees, return temp. 70 degrees, factory spec is 40-70 delta T. Found gas manifold pressure at 3.5 inch...

Need help