Bryan® Boilers
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Form No. 7510 (Rev. 6/05) Bryan “Flexible Water Tube” AB Series Steam & Water Boilers 900,000 to 3,000,000 BTUH Forced draft gas, oil or dual fuel fi red Water Boiler AB120-W-FDGO Steam Boiler AB250-S150-FDG BRYAN® BOILERS Originators of the “Flexible Water Tube” design Low initial cost, high operating effi ciency deliver substantial return on investment • True “fl exible water tube” design guaranteed shock free F • Longer lasting with better A M performance J C • Full fi ve sq ft of heating K surface per BHP G Quality Construction Features: A. Water side or steam side interior ac cessible for B clean out and inspection, front and rear open ings, D upper and lower drums. H B. Large volume water leg downcomers promote rapid internal circulation, temperature equalization and L effi cient heat transfer. I C. Boiler tube and furnace area access panels: heavy E 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 K. Bryan bent water tubes maintenance and minimizing fl oor space. are fl exible, individually F. Minimum sized fl ue vent. replaceable without welding or rolling. Never more than G. Control panel: all controls installed with connections to two tube confi gurations. terminal strip. L. Pressurized design H. Forced draft, fl ame retention head type burner. Effi cient fi rebox with internal water- combustion of oil or gas, plus quiet operation. cooled furnace with low I. Heavy steel boiler frame, built and stamped in accordance heat release rate. with the appropriate ASME Boiler Code. M. Steam boilers with extra J. Heavy gauge steel boiler jacket with rust-resistant zinc large drum with high steam coating and enamel fi nish, insulated with 1½" fi berglass to release area ensure stable ensure exceptionally cool outer surface. water level and dry steam. Bryan AB Series Boiler Specifi cations OUTPUT@ 80% OUTPUT@ 83.5% INPUT (4) HEATING APPROX. BOILER EFFICIENCY(2) EFFICIENCY(3) STEAM OUTPUT (1) MBH SURFACE SHIP MODEL LBS/HR (KG/HR) 2 (KW) MBH (KW) HP (KW) MBH (KW) HP (KW) SQ. FT. (M ) LBS. (KG) 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) 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. Guaranteed effi ciency and easy maintenance assure low cost operation All Bryan AB Series boilers offer these operating and performance features Guaranteed effi ciency per HP. Needing only 24" for tube removal, and on only The breakthrough in water tube boiler design that pro- one side of the boiler, the AB Series boiler occupies very duced the AB Series provides operating effi ciency so little space in the boiler room. This can result in consider- reliable, we guarantee it to be 83.5% for hot water boilers able savings in building costs. Pressurized fi ring permits and 82% - 15 PSI / 80% - 150 PSI or better for steam. minimum sized breaching and vent. The Bryan Flexible Tube Multi-pass fl ue gas travel Bryan’s exclusive “Flexible Tube” design High velocity four-pass fl ue gas travel is obtained by a eliminates the possibility of damage unique baffl ing system. This contributes to maximum fi re from so-called “thermal side heat transfer and overall high boiler effi ciencies. shock.” Tubes are easily re- Thermal blend water return movable and replaceable, Bryan’s unique “thermal blend” return blends cold or without welding or rolling, cooler return water with warmer boiler water abridging it eliminating long, expensive to design operating temperatures. An injector tube directs downtime should repairs the “mixed” water fl ow through the downcomer to the ever be required. lower header and heating surfaces at a temperature above Water cooled furnace possible condensing conditions. This reduces the possi- The confi guration of the bility of “cold spots” and Water water tubes provides a damage from corrosive Steam Boiler water cooled combustion condensation. Boiler chamber. A high percent- Positive internal age of the heating surface is exposed to direct radiant circulation heat, increasing water velocities and heat transfer. Each pass of the Bryan Large steam drum water tube slopes up- The steam drum has generous water volume and steam ward. This confi guration, release area. This design, along with effective drum along with the large internal functions, results in a stable water level and volume downcomer produces extremely dry steam at all load conditions. water legs, provides the Accessibility of furnace and tube area extremely rapid natural thermal internal circula- Inner panel provides easy and complete access to fur- tion, promoting both high nace and boiler tube area, as well as to burner head. All effi ciency of heat transfer and panels are heavily insulated and sealed to boiler frame. uniform temperature throughout the All access is from only one side. boiler. Eliminating stress damage caused Compact design, minimum fl oor space by unequal temperature distribution is especially With our compact water tube design, the overall size important for heating systems, particularly where inter- of the unit is less than most other types of boilers, yet mittent or continuous low temperature water returns may maintains a full fi ve square feet of heating surface area be encountered. Bryan AB Series Boilers Standard and Optional Equipment Hot water boiler Optional construction to ASME STANDARD EQUIPMENT FURNISHED OPTIONAL EQUIPMENT, Power Boiler Code requirements for EXTRA COST temperatures exceeding 240°F and/or Water boiler air safety switch, control panel, all pressure exceeding 160 psi to maxi- Combination thermometer and alti- controls installed and wired. 1. Manual reset high limit control mum of 285° F operating and 300° F 2. Manual reset low water cutoff tude gauge, ASME Code rated boiler Straight oil fi red unit design temperature and 250 psi. relief valve, water temperature control 3. Auxiliary low water cutoff (240°F max std.), high limit control, Electronic combustion safety control, 4. Combination low water cutoff probe LWCO. dual oil valves oil ignition transformer, and feeder When ordering, please specify: two-stage fuel unit, direct spark 5. Alarm bells or horns 1. Boiler size Steam boiler ignition of oil, oil nozzle assembly, 6. UL, CUL, CSD-1, FM, IRI or 2. Supply and return tempera- Steam pressure gauge, steam pres- control panel, all controls installed other insurance approved tures required sure control, combination low water and wired. control systems 3. Boiler relief valve setting cutoff and pump control, auxiliary 7. Indicating lights, as desired Combination gas-oil unit 8. Lead-lag systems for two or 4. Type of fuel: natural, LP, or low water cutoff, high limit pressure other gas and/or No. 2 oil control, ASME-rated safety valve, Electronic combustion safety control, more boilers with or without water glass set. automatic operating gas valve, safety outdoor reset control 5. If gas, type, BTU content, gas valve, pilot solenoid valve, pilot 9. Draft control system specifi c gravity and pressure Straight gas fi red unit ignition assembly, main manual gas 10. Low NOx package available Electronic combustion safety con- shut-off valve, pilot cock, pilot and 6. Electric power voltage, phase trol, automatic operating gas valve, main gas pressure regulators, air OPTIONAL CONSTRUCTION and frequency safety switch, manual fuel selector safety gas valve, pilot solenoid valve, Steam boiler 7. Optional extra equipment or pilot ignition assembly, main manual switch, dual oil valves, gas pilot for construction both fuels, two-stage fuel unit, nozzle Optional construction to ASME Power gas shut-off valve, pilot cock, pilot 8. Special approvals required and main gas pressure regulators, assembly, control panel, all controls Boiler Code requirements for pressure installed and wired. exceeding 150 psi to maximum of 300 (UL, CUL, CSD-1, FM, or IRI) psi design pressure. 9. Altitude Bryan AB Series Steam & Hot Water Boilers STEAM BOILER DIMENSIONS — inches (cm) A B C D E F G H I J K L Boiler Length Width Height Gas Train Supply Clearance for Min.