Numbers and Titles



Includesgas and oil fuel-fired duct, radiant, and unit heaters.
See23 11 00 for facility fuel piping. 23 51 00 for breechings, chimneys, and stacks. 23 82 39 for unit heaters.
23 55 13Fuel-Fired Duct Heaters
23 55 23Gas-Fired Radiant Heaters
23 55 33Fuel-Fired Unit Heaters