I have a Trane XV80i (TUD2B100AFV32A) two stage furnace and I have some questions about it.
1/ It has a nominal rating of 100,000 BThU/Hr. Is this only when the second stage is in use?
2/ What would the output be on the first stage only?
3/ Can the output of the furnace be reduced? If so, how (lower gas pressure, different jets??)
I am finding that questions like this are outside the knowledge of either my contractors salesman or the installation technicians, and Trane themselves clearly do not wish to talk to end customers.
Any general advice on where to get answers without bothering the experienced professionals here?