Horizontal firetube boilers must be pitched toward the blow-off outlet not less than 1 inch for each 10 feet of tube length when set.
02-041 C.M.R. ch. 12, § 8
Horizontal firetube boilers must be pitched toward the blow-off outlet not less than 1 inch for each 10 feet of tube length when set.
02-041 C.M.R. ch. 12, § 8