Bryan Boilers EB Series User manual

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 300oF.)
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)

EB Series
Steam Boilers
Forced Draft - Gas, Oil, Gas/Oil
Form 2127 Rev 07/01/06 Repl 11/01/04 Page 2 of 2
BOILER TRIM AND CONTROL EQUIPMENT
The following trim and controls shall be furnished:
1. Steam pressure gauge
2. Steam pressure control operator
3. High limit safety control
4. Water gauge glass
5. Low water cutoff and feed pump control
6. Auxiliary low water cutoff – probe type M/R
7. Gauge cocks (150 PSIG units only)
8. ASME safety relief valve(s)
GAS BURNER AND CONTROL EQUIPMENT
Boiler shall be furnished with a UL listed forced draft flame
retention gas burner. Burner shall be complete with integral
motor and blower for supplying sufficient combustion air with
normal vent conditions.
The following controls shall be furnished:
1. Main manual gas shutoff valves
2. Motorized gas valve operator and auxiliary safety shutoff gas
valve (EB75 & EB100)
3. Motorized gas valve with proof of closure operator and auxiliary
safety shutoff gas valve (EB125 to EB240)
4. High and low gas pressure switches
5. Gas pilot shutoff and solenoid valves
6. Gas pilot ignition assembly with ignition transformer
7. Pilot and main gas pressure regulators
8. Modulating burner (EB125 to EB240)
9. Adjustable cam gas metering valve (EB125 to EB240)
10. Burner mounted control panel containing:
-Two indicator lights – power and fuel (EB75 & EB100)
-Four indicator lights – call for heat, ignition, fuel and
flame failure (EB125 to EB240)
-Air safety switch
-Fused on/off switch
-Firing rate potentiometer with manual / auto switch
(EB125 to EB240)
-Motor starter(s) – where applicable
-Honeywell electronic combustion safety control
OIL BURNER AND CONTROL EQUIPMENT
Boiler shall be furnished with a UL listed forced draft, pressure
atomizing type oil burner, suitable for operation with No. 2 fuel oil.
Burner shall be complete with integral motor and blower for
supplying sufficient combustion air with normal vent conditions.
The following controls shall be furnished:
1. Oil valves – primary and auxiliary
2. Two-stage fuel unit burner mounted (EB75 & EB100)
3. Remote mounted oil pump (EB125 to EB240)
4. Direct spark oil ignition assembly (EB75 & EB100)
-Ignition transformer
-Oil ignition and nozzle assembly
5. Gas pilot oil ignition assembly (EB125 to EB240)
-Gas pilot shutoff valve, solenoid valve and gas pilot
pressure regulator
-Gas pilot ignition assembly with ignition transformer
-Oil nozzle assembly
6. Modulating burner (EB125 to EB240)
7. Adjustable cam oil metering valve (EB125 to EB240)
8. Burner mounted control panel containing:
-Two indicator lights – power and fuel (EB75 & EB100)
-Four indicator lights – call for heat, ignition, fuel and
flame failure (EB125 to EB240)
-Air safety switch (EB125 to EB240)
-Fused on / off switch
-Firing rate potentiometer with manual / auto switch
(EB125 to EB240)
-Motor starter(s) – where applicable
-Honeywell electronic combustion safety control
DUAL FUEL GAS/OIL BURNER AND CONTROL
EQUIPMENT
Boiler shall be furnished with a UL listed forced draft, pressure
atomizing, dual fuel burner, suitable for operation with No. 2 fuel
oil and natural gas (or other gas). Burner shall be complete with
integral motor and blower for supplying sufficient combustion air
with normal vent conditions.
The following controls shall be furnished:
1. Same equipment as gas burner
2. Same equipment as oil burner
3. Gas pilot ignition assembly for both gas & oil ignitions
4. Manual fuel selection switch
OPTIONAL BOILER TRIM & CONTROLS
1. Manual reset type high limit
2. Manual reset type low water cutoff
3. Auxiliary low water cutoff(s)
4. Low water cutoff feeder (in addition to, or in place of
standard low water cutoff)
5. UL, IRI, CSD-1, FM or other insurance requirements
6. Barometric damper
7. Indirect water heating coils for domestic, pool or process hot
water
8. Manual blowdown valves (surface or bottom)
9. Automatic boiler blowdown valves (surface or bottom)
10. Boiler feed systems
11. Boiler deaerator units
12. Other controls and boiler trim, as specified
OPTIONAL BURNER CONTROLS AND ACCESSORIES
1. Two-stage high-low burner with proven LFS (EB75 & EB100)
2. Modulating burner (EB75 & EB100)
3. Auxiliary motorized safety shutoff gas valve
4. Alarm bell(s) or horn(s)
5. Fireye combustion safety control
6. UL, IRI, CSD-1, FM or other insurance requirements
7. Indicator lights – as specified
8. Direct spark ignition of oil (dual fuel burners)
9. Boiler skid mounted burner control panel
10. Boiler skid mounted burner oil pump set (EB75 & EB100)
11. Adjustable cam gas or oil metering valve(s) (EB75 & EB100)
12. Lead lag systems for two or more boilers
13. Other controls, as specified