Burnham Commercial Series 4N Boiler

Overview

Series 4N 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. Steam Trim: Steam pressure gauge (3-1/2 inch 63A through 662A; 6 inch 827 and larger), gauge glass set for mounting on boiler with 63A 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 (3-1/2 inch) 63A through 662A, pressure/altitude gauge (6 inch) and thermometer, (6 inch) 827 and larger, ASME relief vavle(s). Trim not installed. Highlights *Compact, efficient three-pass firebox design. *Applications firing solid fuel, gas oil. *15 PSI steam, 30 or 60 PSI water. *Ample firebox assures non-critical combustion, high efficiency.
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