A. Water side or steam side interior ac cessible for
clean out and inspection, front and rear open ings,
upper and lower drums.
B. Large volume water leg down comers promote
rapid internal circulation, temperature equalization
and effi cient heat transfer.
C. Boiler tube and furnace area access panels: heavy
gauge steel casing with 2" high-temperature ceramic
fi ber insulation, bolted and tightly sealed to boiler frame.
D. Flame observation port in access door at rear of boiler.
E. Single side access; combustion chamber, tubes and burner
head are completely accessible from one side simplifying
maintenance and minimizing fl oor space.
F. Minimum sized fl ue vent.
G. Control panel: all controls installed with connections
to terminal strip.
H. Forced draft, fl ame retention head type burner. Effi cient
combustion of oil or gas, plus quiet operation.
I. Heavy steel boiler frame, built and stamped in accordance
with the appropriate ASME Boiler Code.
J. Heavy gauge steel boiler jacket with rust-resistant zinc
coating and enamel fi nish, insulated with 1½" fi berglass
to ensure exceptionally cool outer surface.
J
C
K
B
D
L
I
K. Bryan bent water tubes
are fl exible, individually replaceable without welding or
rolling. Never more than two
tube confi gurations.
L. Pressurized design fi rebox
with internal water-cooled
furnace with low heat release
rate.
M. Steam boilers with extra
large drum with high steam
release area ensure stable
water level and dry steam.
NOTES: (1) W = Water / S = Steam
(2) Output and horsepower based on boiler industry standard of 80% of input.
(3) Output and horsepower based on an average natural gas combustion effi ciency of 84% for hot water boiler. Actual combustion effi ciencies for oil will be higher.
(4) Lbs. steam per hour from and at 212°F.
(1)
MBH (KW) MBH (KW) HP (KW) MBH (KW) HP (KW) LBS/HR (KG/HR) SQ. FT. (M²) LBS. (KG)
OUTPUT @ 80% EFFICIENCY
(2)
OUTPUT @ 84% EFFICIENCY
STEAM OUTPUT
(3)
(4)
HTG. SURFACE APPROX. SHIP
Guaranteed effi ciency and easy
maintenance assure low cost operation
All Bryan RV Series boilers offer these operating and performance features
Guaranteed effi ciency
The breakthrough in water tube boiler design that produced the RV Series provides operating effi ciency so
reliable, we guarantee it to be 84% for hot water boilers
and 82% - 15 psi / 80% - 150 psi or better for steam boilers.
The Bryan Flexible Tube
Bryan’s exclusive “Flexible Tube” design
eliminates the possibility of damage
from so-called “thermal
shock.” Tubes are easily
removable and replaceable,
without welding or rolling,
eliminating long, expensive
downtime should repairs
ever be required.
Water cooled furnace
The configuration of the
Water
Boiler
water tubes provides a
water cooled combustion
chamber. A high percentage
of the heating surface is exposed to direct radiant heat,
increasing water velocities and heat transfer.
Large steam drum
The steam drum has generous water volume and steam
release area. This design, along with effective drum
internal functions, results in a stable water level and
produces extremely dry steam at all load conditions.
Accessibility of furnace and tube area
Inner panel provides easy and complete access to furnace
and boiler tube area, as well as to burner head. All panels
are heavily insulated and sealed to boiler frame. All access
is from only one side.
Compact design, minimum fl oor space
With our compact water tube design, the overall size of the
unit is less than most other types of boilers, yet maintains
a full fi ve square feet of heating surface area per HP.
Needing only 32" for tube removal, and on only one side
of the boiler, the RV Series boiler occupies very little space
in the boiler room. This can result in considerable savings
in building costs. Pressurized fi ring permits minimum
sized breaching and vent.
Multi-pass fl ue gas travel
High velocity four-pass fl ue gas travel is obtained by a
unique baffl ing system. This contributes to maximum fi re
side heat transfer and overall high boiler effi ciencies.
Thermal blend water return
Bryan’s unique “thermal blend” return blends cold or
cooler return water with warmer boiler water abridging it
to design operating temperatures. An injector tube directs
the “mixed” water fl ow through the downcomer to the
lower header and heating surfaces at a temperature above
possible condensing conditions. This reduces the possibility of “cold spots” and
damage from corrosive
condensation.
Steam
Boiler
Positive internal
circulation
Each pass of the Bryan
water tube slopes upward. This confi guration,
along with the large volume down-comer water
legs, provides the extremely
rapid natural thermal internal circulation, promoting
both high effi ciency of heat
transfer and uniform temperature
throughout the boiler. Eliminating stress
damage caused by unequal temperature distribution is
especially important for heating systems, particularly
where intermittent or continuous low temperature water
returns may be encountered.
Bryan RV Series Boilers Standard and Optional Equipment
STANDARD EQUIPMENT FURNISHED
Water Boiler
Combination thermometer and altitude
gauge, ASME Code rated boiler relief
valve, water temperature control (240°F
max std.), high limit control, pro be
LWCO.
Steam Boiler
Steam pressure gauge, steam pressure control, combination low water
cutoff and pump control, auxiliary low
water cutoff, high limit pressure
control, ASME-rated safety valve,
water glass set.
Straight gas fi red unit
Electronic combustion safety control,
automatic operating gas valve, safety
gas valve, pilot solenoid valve, pilot
ignition assembly, main manual gas
shut-off valve, pilot cock, pilot and
main gas pressure regulators, air safety
switch, control panel, all controls
installed and wired.
Straight oil fi red unit
Electronic combustion safety control,
dual oil valves oil ignition transformer,
two-stage fuel unit, gas pilot, oil nozzle
assembly, control panel, all controls
installed and wired.
Combination gas-oil unit
Electronic combustion safety control,
automatic operating gas valve, safety
gas valve, pilot solenoid valve, pilot
ignition assembly, main manual gas
shut-off valve, pilot cock, pilot and
main gas pressure regulators, air safety
switch, manual fuel selector switch,
dual oil valves, oil ignition transformer,
two-stage fuel unit, oil ignition and
nozzle assembly, control panel, all
controls installed and wired.
OPTIONAL EQUIPMENT,
EXTRA COST
1. Manual reset high limit control
2. Manual reset low water cutoff
3. Auxiliary low water cutoff
4. Combination low water cutoff
and feeder
5. Alarm bells or horns
6. UL, CUL, CSD-1, FM, IRI or
other insurance approved
control systems
7. Indicating lights, as desired
8. Lead-lag systems for two or
more boilers with or without
outdoor reset control
9. Draft control system
10. Low NOx package
OPTIONAL CONSTRUCTION
Steam boiler
Optional construction to ASME Power
Boiler Code requirements for pressure
exceeding 150 psi to maximum of 300
psi design pressure.
Hot water boiler
Optional construction to ASME Power
Boiler Code requirements for temperatures exceeding 240° F and/or pressure
exceeding 160 psi to maximum of
285° F operating and 300° F design
temperature and 250 psi.
When ordering, please specify:
1. Boiler size
2. Supply and return temperatures required
3. Boiler relief valve setting
4. Type of fuel: natural, LP, or
other gas and/or No. 2 oil
5. If gas, type, BTU content,
specifi c gravity and pressure
available
6. Electric power voltage, phase
and frequency
7. Optional extra equipment or
construction
8. Special approvals required
(UL, CUL, CSD-1, FM, or IRI)
9. Altitude
Bryan RV Series Steam & Hot Water Boilers
STEAM HEATING/PROCESSING BOILER DIMENSIONS in inches (cm)
A B C D E F G H I J K L
Boiler Length Gas