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The inner area of the boiler is maintained as a vacuum at all times. Unlike a high pressure boiler, it poses no danger of accident.
 
An adequate amount of heating water is injected to the boiler and maintained at a vacuum. As the burner heats up the heating water, pressurized vapor is generated and the heat is transferred to the heat exchanger for hot baths and heating.
 
The heat exchanger repeats the cycle of heating water, pressurized vapor and heat exchange and indirectly transfers the heat to the pressurized vapor. .
 
The vacuum hot water boiler is frequently used for heating and hot baths. It is widely used for hotels, pools, dorms and public baths requiring clean hot water.  
Model B&B-VW 10 20 30 40 50 60 80 100 120
Rated evaporation 103kcal/hr 100 200 300 400 500 600 800 1000 1200
Insulation area size 4.5 8 11.3 12.8 13.7 16.3 19.2 20.7 23.2
Fuel consumption B/C ℓ/hr 12.4 24.8 37.2 49.6 62 74.4 99.2 124 148.8
LNG N㎡/hr 10.4 20.8 31.2 41.6 52 62.4 83.2 104 124.8
Fuel Diameter B/C A 15 20 20 20 20 25 25 25 25
LNG A 20 20 25 25 25 25 40 40 40
Outlet gas duct mm 150x200 160x300 180x300 200x300 200x300 200x300 250x300 250x350 280x400
Chimney mm 200 250 250 300 300 300 350 430 430
Max pressure m         70        
Control System - ON-OFF / HIGH-LOW
Safety -
For heating Max pressure m 70
Thermal capacity 103kcal/hr 100 200 300 400 500 600 800 1000 1200
Fluid amount ㎡/hr 10 20 30 40 50 60 80 100 120
Diameter of the heating inlet and outlet A 32 32 40 50 50 65 80 80 80
For hot bath Max pressure m 70
Thermal capacity 103kcal/hr 100 200 300 400 500 600 800 1000 1200
Fluid amount ㎡/hr 1.67 3.33 5.0 6.67 8.33 10.0 13.3 16.7 20
Diameter of the heating inlet and outlet A 32 32 40 40 50 65 80 80 80
1. These specifications are subject to change depending on the customer's request and for the purpose of quality improvement.
2. Gas supply pressure is 2,000~4,000 mmA1