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Low initial cost, high operating effi ciency
deliver substantial return on investment
Quality Construction Features:
• True “fl exible water tube”
design guaranteed shock free
• Longer lasting with better
performance
• Full fi ve sq ft of heating
surface per BHP
C
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.
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.
E
F
G
H
K
J
A
D
L
M
I
Bryan AB Series Boiler Specifi cations
AB90-W 900 (264) 720 (211) 21 (211) 752 (220) 22 (220) — 113 (10.5) 2,000 (907)
AB90-S 900 (264) 720 (211) 21 (211) — — 742 (337) 113 (10.5) 2,600 (1,179)
AB120-W 1,200 (352) 960 (281) 29 (281) 1,002 (294) 30 (294) — 148 (13.8) 2,250 (1,021)
AB120-S 1,200 (352) 960 (281) 29 (281) — — 990 (449) 148 (13.8) 3,050 (1,384)
AB150-W 1,500 (440) 1,200 (352) 36 (352) 1,253 (367) 37 (367) — 184 (17.1) 2,550 (1,157)
AB150-S 1,500 (440) 1,200 (352) 36 (352) — — 1,237 (561) 184 (17.1) 3,500 (1,588)
AB200-W 2,000 (586) 1,600 (469) 48 (469) 1,670 (489) 50 (489) — 244 (22.7) 3,050 (1,384)
AB200-S 2,000 (586) 1,600 (469) 48 (469) — — 1,649 (748) 244 (22.7) 4,150 (1,882)
AB250-W 2,500 (733) 2,000 (586) 60 (586) 2,088 (612) 62 (612) — 303 (28.2) 3,500 (1,588)
AB250-S 2,500 (733) 2,000 (586) 60 (586) — — 2,062 (935) 303 (28.2) 4,800 (2,177)
AB300-W 3,000 (879) 2,400 (703) 72 (703) 2,505 (734) 75 (734) — 350 (32.5) 3,750 (1,701)
AB300-S 3,000 (879) 2,400 (703) 72 (703) — — 2,474 (1,122) 350 (32.5) 5,100 (2,313)
BOILER
MODEL
(1)
INPUT
MBH
(KW)
OUTPUT@ 80%
EFFICIENCY
(2)
MBH (KW)
HP (KW)
OUTPUT@ 83.5%
EFFICIENCY
(3)
MBH (KW)
HP (KW)
STEAM OUTPUT
(4)
LBS/HR (KG/HR)
HEATING
SURFACE
SQ. FT. (M
2
)
APPROX.
SHIP
LBS. (KG)
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 83.5% for hot water boiler. Actual combustion effi ciencies for oil will be higher.
(4) Lbs. steam per hour from and at 212°F.
B