15 to 200 HP Packaged Boilers
15 psi Steam or 80 psi Hot Water
3-pass firetube boiler operates at high efficiencies due to effective heat transfer across all heating surfaces. Submerged combustion chamber improves water circulation and adds to direct heating surface.
Compact design fits through a 36″ doorway and occupies a small footprint per boiler horsepower. Front and rear water legs eliminate the need for side connections.
Built, inspected, and stamped in accordance with Section IV of the ASME code. Tubes are rolled and flared to facilitate maintenance*.
U-Type Flex Joint design minimizes the destructive effects of differential stress as furnace expands at a greater rate than tubes during firing.
Structural steel skid with slots for forklift handling.
Custom fabricated bent steel turbulators insure positive furnace pressure necessary for highest noncondensing combustion efficiencies (83% +/-)..
Smokeboxes are easily removed for transporting boilers through existing elevators and stairwells. Bolted and gasketed construction provides convenient access to tubesheets for inspection, cleaning, and tube maintenance.
All flue gas reversing chamber surfaces except for rear access door are water-cooled, insuring maximum heat transfer efficiency and minimal thermal shock. Removable rear door provides easy access to furnace interior.
* Welded tubes available upon request.
L.E.S. Series HF/HW “Scotch Box” Boilers Chart
• 3-Pass Firetube • 15# Steam / 30# Water • 83% Efficiency
• 4 sq.ft. Fireside Heating Surface per BHP
Ratings / Data / Dimensions
L.E.S. Series HF/HW “Scotch Box” Boilers Schematic Cutaway