Form No. 3710
(Rev. 6/04)
Bryan “Flexible Water Tube”
DR Series
Steam & Water Boilers
250,000 to 850,000 BTUH Forced Draft Gas, Oil or Dual Fuel Fired
Water Boiler
DR850-W-FDGO
Boiler
DR350-S150-FDG
Originators of the “Flexible Water
Low initial cost, high operating efficiency deliver substantial return on investment
•True “flexible water tube” design
• High quality steam for |
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heat or process |
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•Pressurized firing for high efficiency
A.Water side or steam side interior accessible for cleanout and inspection, front and rear openings, upper and lower drums.
B.Large volume water leg downcomers promote rapid internal circulation, temperature equalization and efficient heat transfer.
C.Boiler tube and furnace area access panel: heavy gauge steel-lined with high temperature ceramic fiber and insulation, bolted and tightly sealed to boiler frame.
D.Single side access; combustion chamber, tubes and burner head are completely accessible from one side simplifying maintenance and minimizing floor space.
E.Minimum sized flue vent.
F.Control panel: all controls installed with connections to terminal strip.
G.Forced draft, flame retention head type burner. Efficient combustion of oil or gas, quiet operation.
H.Heavy steel boiler frame, built and stamped in accordance with the appropriate ASME Boiler Code.
I.Heavy gauge steel boiler jacket with rust-resistant zinc coating and enamel finish, insulated with fiberglass to insure exceptionally cool outer surface.
J.Bryan bent water tubes are flexible, individually replaceable without welding or rolling. Never more than two tube configurations.
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K.Internal water-cooled furnace with low heat release rate.
L.Steam boilers with extra largedrumwithhighsteam release area ensure stable water level and dry steam.
M.Pressurized design: inner fireside casing constructed of heavy gauge steel, completely sealed, linedwithhightemperature insulationandrefractory.
Bryan DR Series Boiler Specifications
BOILER |
INPUT |
OUTPUT@ 80% |
OUTPUT@ 83.5% |
STEAM OUTPUT(4) |
HEATING |
APPROX. |
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MBH |
EFFICIENCY(2) |
EFFICIENCY(3) |
SURFACE |
SHIP |
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MODEL(1) |
(KW) |
MBH (KW) |
HP (KW) |
MBH (KW) |
HP (KW) |
LBS/HR (KG/HR) |
2 |
LBS. (KG) |
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SQ. FT. (M ) |
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DR250-S |
250 (73) |
200 (59) |
6 |
(59) |
— |
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206 (93) |
66 (6.1) |
1,150 (522) |
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DR350-W |
350 (103) |
280 (82) |
8 |
(82) |
292 (86) |
9 |
(86) |
— |
66 (6.1) |
1,150 (522) |
DR350-S |
350 (103) |
280 (82) |
8 |
(82) |
— |
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— |
288 (131) |
66 (6.1) |
1,150 (522) |
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DR450-W |
450 (132) |
360 (106) |
10 (98) |
376 (110) |
11 |
(110) |
— |
66 (6.1) |
1,150 (522) |
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DR450-S |
450 (132) |
360 (106) |
10 (98) |
— |
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371 (168) |
66 (6.1) |
1,150 (522) |
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DR650-W |
650 (190) |
520 (152) |
15 |
(147) |
543 (159) |
16 |
(159) |
— |
103 (9.6) |
1,650 (748) |
DR650-S |
650 (190) |
520 (152) |
15 |
(147) |
— |
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— |
536 (243) |
103 (9.6) |
1,650 (748) |
DR850-W |
850 (249) |
680 (199) |
20 |
(196) |
710 (208) |
21 |
(208) |
— |
103 (9.6) |
1,650 (748) |
DR850-S |
850 (249) |
680 (199) |
20 |
(196) |
— |
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— |
701 (318) |
103 (9.6) |
1,650 (748) |
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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 efficiency of 83.5% for hot water boiler. Actual combustion efficiencies for oil will be higher.
(4)Lbs. steam per hour from and at 212°F.
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