C Series Ratings and Dimensions C Series Ratings Gross Output Boiler HP 20 30 40 50 60 70 80 90 100 125 150 175 200 A 30 30 34-1/2 34-1/2 34-1/2 34-1/2 34-1/2 34-1/2 34-1/2 50-3/4 50-3/4 50-3/4 50-3/4 C 75-5/8 82-5/8 90-1/8 100-5/8 113-1/8 114-5/8 125-1/8 135-1/8 145-1/8 138 154-1/2 170-3/4 187 B 66-3/8 66-3/8 73-7/8 75-3/8 75-3/8 78-1/2 78-1/2 78-1/2 78-1/2 94-3/4 94-3/4 94-3/4 94-3/4 MBH 670 1,004 1,339 1,674 2,009 2,343 2,678 3,013 3,348 4,184 5,021 5,858 6,695 Lbs/Hr 690 1,035 1,380 1,725 2,070 2,4