Replace metal chiimney.
Install chimney liner and replace boiler breeching.
Installing chimney lining on the existing chimney, as part of the mechanical work involved in the heating plant boiler replacement.
Mechanical work involved in the heating plant boiler replacement, including vacuum pumps, boiler feed unit, and combustion air fan.
Install new chimney liner in existing masonry chimney as per plans. installation of a new boiler feed unit with duplex pumps as per plans. no change in use, egress or occupancy.
Install chimney liner.