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The B&B-Z type smoke tube boiler adopts pressurization combustion methods in three passes and performs the reverse flow of the gas from the upper area to the lower area in order to improve evaporation rate per unit area.  
Multiple cleaning holes facilitate repair and maintenance during use.  
The combustion room is made of a corrugated flue that improves the insulation effect and offers flexibility for heat expansion.  
It is highly reliable and supports simple installation and conveyance. A reduced construction period can help you save money.  
It can be easily combined with any type of burner including oil or gas burner.  
It is used for large buildings, apartment complexes, hospitals and industrial sites requiring high vapor pressure of 0.5T/H~15T/H.
Model B&B-Z 150 200 300 350 400 450 500 600 700 800 1000 1200 1500
Rated evaporation g/hr 1500 2000 3000 3500 4000 4500 5000 6000 7000 8000 10000 12000 15000
Fuel consumption LNG N㎡/hr 112.5 150 225 262.5 300 337.8 375 450 525 600 750 900 1125
Fuel consumption B-C ㎏/hr 109.5 146 219 255.5 292 328.5 365 438 511 584 730 876 1095
Accessory
specifications		 Main vapor A 80 80 100 100 100 125 125 125 150 150 200 200 200
Safety A 40 40 25/40 25/40 25/40 40/40 25/50 25/50 40/50 40/50 50/50 50/65 40/80
Water supply A 40 40 40 40 40 50 50 50 50 50 50 50 50
Water drainage A 50 50 50 50 50 50 50 50 50 50 50 50 50
Water level meter B 8 1/2 8 1/2 8 1/2 8 1/2 8 1/2 8 1/2 11 11 11 11 11 11 11
Combustor Amount of fuel ㎏/hr 90
~140		 110
~180		 130
~335		 130
~335		 130
~425		 130
~425		 165
~560		 165
~560		 185
~680		 180
~1080		 185
~1250		 185~
1250		 190~
1350
Oil heater KW 3 3 5 5 5 7 7 7 11 11 11 11 11
Pressing
injection fan		 Wind ㎥/min 28.5 38 57 66.5 76 85.5 95 114 133 152 190 228 285
Motor HP 5 7.5 10 15 15 15 20 20 25 25 30 40 50
Boiler’s weight kg 6210 7470 8970 10400 11230 12260 14100 15720 17640 19440 27360 29670 31860
Quantity when the boiler is full kg 1300 5600 7000 7400 7500 8600 10100 10900 13300 15000 19500 21700 21200
Quantity when the boiler is
being used		 kg 3500 4600 5700 6000 6100 7000 8200 8800 10800 12200 15500 17500 16700
Duct size   200
x300		 300
x300		 300
x400		 400
x400		 400
x400		 400
x500		 400
x500		 400
x600		 400
x760		 600
x600		 600
x760		 600
x900		 600
x1220
Cross-sectional area size ㎡ 0.065 0.087 0.130 0.152 0.174 0.195 0.217 0.260 0.304 0.347 0.434 0.521 0.651
Chimney Φmm 300 380 435 485 485 520 585 585 650 680 770 880 970
Boiler specifications Width 1830 1990 2090 2160 2160 2282 2430 2430 2550 2700 2800 3140 3140 3140
Length Lmm 3920 4210 4660 4690 5020 5020 5210 5210 5450 5650 6280 6710 7060
Height Hmm 1924 2084 2178 2258 2258 2382 2532 2646 2702 2802 3109 3112 3112
1. These specifications are subject to change depending on the customer's request and for the purpose of quality improvement.
2. Design pressure: 10kg/km2 (operational pressure: 8kg/km2)
3. Water temperature: 20℃,
4. Gas supply pressure is 2,000~4,000 mmA1
B&B-Z 300 350 400 450 500 600 700 800 1000 1200 1500
A 4610 4640 4970 4970 5160 5170 5400 5520 6560 6660 7020
B 370 380 430 430 520 520 550 550 600 650 700
C 2250 2130 2340 2340 2440 2493 2600 2470 3180 3330 3380
D 1340 1460 1450 1450 1450 1400 1500 1750 1980 1830 2086
E 350 370 450 450 450 450 450 450 500 550 550
F 3490 3490 3690 3690 3790 3800 4000 4120 5060 5060 5370
G 1878 1958 1958 2082 2232 2346 2502 2602 2732 2932 2932
H 400 400 400 400 500 500 600 600 650 650 650
J 1239 1279 1279 1341 1416 1473 1451 1501 1566 1646 1646
K 1089 1129 1129 1191 1266 1323 1404 1451 1516 1616 1616
L 2100 2150 2150 2300 2450 2550 2700 2800 2950 3150 3150
M 675 1007 1007 1054 1111 1156 1215 1253 1308 1385 1386
N 1900 1925 1925 2000 2075 2125 2200 2250 2325 2425 2425