EB Series
Steam Boilers
Forced Draft - Gas, Oil, Gas/Oil
Form 2127
Rev 07/01/06
Repl 11/01/04
Page 1 of 2
The boiler shall be a Bryan Model ___________
flexible water tube water boiler, with a capacity of
______ BTU input and ______ BTU output.
(__________HP)
The boiler shall be constructed and assembled
as a completely packaged unit ready for field
connections to the steam supply, return
connection, electrical power supply, fuel
supply(s), relief valve discharge, building
management controls and flue-gas vent.
15 PSIG STEAM BOILERS -
The boiler shall be
manufactured in strict accordance with the
ASME Low Pressure Boiler Heating Code,
Section IV, and shall bear the ASME “H” stamp
for a maximum working pressure of 15 PSIG.
150 PSIG STEAM BOILERS -
The boilers shall
be manufactured in strict accordance with the
ASME Power Boiler Code, Section I, and shall
bear the ASME “S” stamp for a maximum
working pressure of 150 PSIG.
(Also available for higher pressures up to 250
PSIG and temperatures to 300
o
F.)
VESSEL AND TUBE CONSTRUCTION
The boiler shall be constructed on a heavy steel
frame. The boiler pressure vessel shall be
provided with adequately sized upper and lower
drums. A minimum of two downcomers shall be
provided and shall be located inside the furnace
chamber to maximize proper thermal internal
water circulation. The boiler steam drum shall be
no less than 24” O.D.. The drum shall be
provided with internals designed for providing
steam quality in excess of 99%. Steel water
tubes are to be 1½” O.D., .095 wall thickness
minimum, six-pass, flexible serpentine bend
design, not subject to thermal shock damage.
Individual water tubes shall be easily removable
and replaceable without either welding or rolling.
The boiler shall have no more than two tube
configurations. The boiler shall be furnished with
an adequate number of tappings and inspection
openings to facilitate internal boiler inspection and
cleaning.
FURNACE/COMBUSTION CHAMBER
CONSTRUCTION
Access to the furnace/combustion chamber is
gained by a hinged access door(s) with an
opening of no less than 26" wide x 62" high
maximum to allow for inspection of the interior
chamber and the burner head. All remaining
panels shall be individually removable. All
access panels shall be affixed to the pressure
vessel frame and insulated with 2” mineral fiber
mono block and 2” high temperature ceramic
blanket insulation and be fully gasketed for
pressurized firing.
The furnace/combustion chamber shall be
primarily of water-wall design with one side of
removable panels. The stationary interior wall
shall be lined with 1” mineral fiber mono block and
1” ceramic blanket insulation. The front and rear
walls are insulated with 4” mineral fiber mono
block and 2” ceramic blanket. The floor beneath
the tubes shall be lined with 2” mineral fiber mono
block insulation and 2” ceramic blanket. The
boiler furnace/combustion chamber and flueways
shall be designed to operate at a positive 0.50”
w.c. at the boiler flue outlet. The boiler will require
a “positive pressure” type metal flue.
JACKET CONSTRUCTION
The boiler shall be complete with a metal jacket,
16 gauge, zinc-coated rust resistant steel casing,
finished with a suitable heat resisting paint and
shall be constructed on a structural steel frame
and properly insulated with no less than 1½”
fiberglass insulation. Complete jacket and
insulation shall be easily removable and
reinstalled. The boiler shall incorporate
individually removable jacket doors, with handles
providing easy access to combustion chamber
and access panels. The entire tube area shall
be easily accessible for fireside cleaning.
All appropriate controls, where possible, shall be
mounted on boiler front.
A tube removal and replacement shall be
demonstrated at time of start-up. Demonstration
time not to exceed 40 minutes.
The boiler vessel shall be warranted for 25 years
against thermal shock on a non-pro-rated basis.
(Continued on Page 2)
