2. Welded Construction: L.E.S. boilers are built, inspected, and stamped in accordance with Section IV of the ASME code. 100% welded construction eliminates nuisance tube leaks and repairs.

3. U-Type Flex Joint: Reduced burner port design minimizes the destructive effects of differential stress as furnace expands at a greater rate than tubes during firing. Distributing expansion force among multiple perpendicular surfaces reduces potential for tubesheet damage. Boilers are warranted for 5 years against thermally induced stress cycling failures (commonly referred to as “thermal shock”).

4. Structural Steel Skid: Channel base with slots for forklift handling simplifies rigging. Full length skid allows rolling boilers into place on steel pipes. Lifting holes are standard on all models. 5.Custom-fabricated Turbulators: Bent steel turbulators insure positive furnace pressure necessary for highest non-condensing combustion efficiencies (83%+).

6. Removable Smokeboxes: Bolted and gasketed smokeboxes and covers provide convenient access to tubesheets for inspection and cleaning. Tube removal and replacement is practical from front or rear. Smokeboxes are easily removed for transporting boilers through existing elevators and stairwells.

7. Reversing Chamber Design: All flue gas reversing chamber surfaces except for rear access door are water-cooled, insuring true wetback boiler heat transfer efficiency. Bolted and gasketed rear door protected with a durable ceramic fiber blanket refractory provides easy access to furnace interior and furnace-to-tubes transition surfaces without costly and inconvenient burner removal.