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This is all public on Lennox's commercial site..apply to be get professional access and can get you more indepth manuals.
http://tech.lennoxintl.com/C03e7o14l...210604_003.pdf
http://tech.lennoxintl.com/C03e7o14l/j0gtbUc7/1104a.pdf
Lennox is the only MAJOR brand manufacturer that is flirting with solar. Obviously other forms of commercial solar products, but none that are incorporated directly with an RTU unit.