WHAT IS THE CAPACITY FOR NATURAL GAS A 10 INCH ALUMINUM FLUE LINER 45 FEET LONG

Answer 1

The answer will vary depending on the arrangment of the liner and number of bends. Assuming the liner is completely verticle though the ontario canada gas code book says 1 130 000 btu/h for a natural draft burner and 2 223 000 btu/h for an induced draft burner. theres also a minumum limit for such a large liner.