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The modern processing method and use of the spiral tube achieves a higher thermal efficiency than existing boilers and less fuel consumption.  
Since it is an ultra-mini size and requires an installation area 50% that of a flue smoke tube boiler, you can save construction costs.  
All accessories are manufactured in a package to achieve a beautiful exterior and simple operation.  
The fast generation of vapor and good dryness can supply good quality vapor.  
No on-site construction is required. Simple installation of the boiler  
A simple structure and easy repair, inspection, cleaning and maintenance retain the original efficiency.  
Textile, manufacturing, hospitals, buildings, hotels, saunas, foods, furniture factories
Model B&B-ZM 50 100 150 200 250 300 350 400 450 500 600
Rated evaporation kg/hr 500 1000 1500 2000 2500 3000 3500 4000 4500 5000 6000
Max pressure kg/㎠ 10~20
Efficiency %           90 (94)          
Insulation area size ㎡ 8 16 19 26 32 39 47 54 60 68 79
Fuel con-
sumption		 B/C ℓ/hr 42 85 128 170 213 255 298 341 383 426 511
LNG N㎡/hr 35 70 104 139 174 208 243 278 312 347 416
Valve Main vapor A 40 65 65 80 80 80 100 100 125 125 125
Safety A 25 25 40 40 40 40 40.25 40.25 40x2 40x2 40x2
Water supply A 25 25 25 25 25 25 40 40 40 40 40
Water drainage A 40 40 40 40 40 40 40 40 40 40 40
Pressure meter A 25 25 25 25 25 25 25 25 25 25 25
Fuel B/C A 20 20 20 20 20 20 20 25 25 25 25
LNG A 25 25 40 40 40 40 40 40 50 50 50
Boiler’s weight Ton 2.30 2.38 2.55 3.05 3.35 3.48 3.52 5.25 5.43. 5.78 6.25
Quantity ㎥ 1.24 1.45 1.61 1.85 2.10 2.45 2.52 3.05 3.24 3.45 3.78
Outlet gas duct mm 150x200 200x350 200x450 250x400 250x500 250x550 300x550 300x600 350x600 350x700 400x750
Chimney mm 280 300 360 430 460 500 550 580 610 650 680
Installa-
tion exterior		 Width mm 1810 1920 2120 2290 2320 2370 2400 2560 2630 2670 2720
Depth mm 2550 2910 3350 3550 3670 3785 4050 4370 4420 4510 4590
Height mm 1710 1780 1850 1920 1970 2020 2050 2315 2425 2480 2650
1. These specifications are subject to change depending on the customer’s request and for the purpose of quality improvement.
2. The rated evaporation is obtained for a water temperature of 20℃, and vapor pressure of 10kg/cm2.
3. The gas supply pressure is 2,000 ~ 4,000 mmAq.
4. The efficiency of 94% is for the heat pipe-type of air preheater.
5. Includes a burner, a control panel, a pressuring insertion fan, a noise suppressor, 2 units of water pump and a drug injector.