Series 4N Boiler

Hand Fired Boilers – Rating Adjustment or Heating Value of Coal
Hand fired ratings are based on coal having a heat value of 13,000 btu per pound.

Category:
Design Firetube
Heat Exchanger 3 Pass
Standard Design Pressure 15 psi/150 psi
Standard Design Pressure 30 psi/60 psi
Burner N/A
Fuel Coal/Biomass
Venting Natural Draft
Heating Surface- Sq Ft Varies
Low Pressure Water Coil Yes
DOE/AHRI Status N/A

Standard Equipment

Boiler
Three-pass boiler constructed and stamped in accordance with Section IV of the ASME Boiler and Pressure Vessel Code for 15 psi steam and 30 psi water with separate base, rear smoke outlet (top outlet available when specified), gas tight front flue cleanout door, rear observation port 63A through 345A, rear access door with observation port 397A and larger, lifting lugs 127A and larger.

Jacket
Wrap-around type, with fiberglass insulation—installed.

 

Additional Equipment

Oil & Gas Fired Boilers
Burner opening in front head (base refractory or combustion equipment is not supplied by Burnham Commercial).

Stoker Fired Boilers
Firedoor(s) in front head; hinged flue door, all sizes; ashpit door in base (Stoker not supplied by Burnham Commercial).

Hand Fired Boilers
Same as stoker fired (Grate sets not supplied by Burnham Commercial).

Standard Equipment

Boiler: Three-pass boil er constructed and stamped in accordance with Section IV of the ASME Code for 15 psi steam, 30 o r SO psi water (Note: SO PSI designs differ dimensionally from the 15130 PSI models ), with separate base, rear smoke outlet (top outlet available when specified), gas tight front flue clean out door, rear observation port S3A through 345A, rear access door with observation port 397A and larger, lifting lugs 127A and larger, flue brush and handle.

Jacket: Wrap -around type, with fiberglass insulation installed.

Steam Trim: Steam pressure gauge (3Y, • S3A through 662A; s-627 and larger ), gauge glass set for mounting on boiler with S3A through 345A, cast iron water column with gauge glass set and tricocks  397A and larger, and ASME safety valve(s). Trim not installed.

Water Trim: Theraltimeter (3 Y,·) S3A through SS2A, pressure/ altitude gauge (6″) and thermometer, (6″) 627 and larger , ASME relief valve(s) . Trim not installed.

Additional Equipment

O i l & Gas Fired Boilers
Burner opening in front head (base refractory or combust ion chamber is not supplied by Burnham Commercial ).

Stoker Fired Boilers
Firedoor(s) in front head ; hinged flue door, all sizes; asphalt door in base.

Hand Fired Boilers
Same as stoker fired. Grate sets not supplied by Burnham Commercial.

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