Hot water boiler GEOTHERM WGB (P) 20


Specifications Units of phys. qt Standard size
Boiler type 20
Heating capacity kW 20000
Water temperature at the exit of the boiler ◦С 95
at the entrance to the boiler 70
EC (efficiency coefficient) of boiler Natural gas % 93,8
93,5  94,2
diesel 92,2  90 
Fuel consumption Natural gas Nm3/h 2018
2000  2002
diesel kg/h 1985  1970  1972
Exhaust gas temperature Natural gas ◦С 134
138  151
diesel 171
172  182
Aerodynamic resistance of the boiler (without burner) Pa 633    630 
Hydraulic resistance MPа 0,12 0,07 
Design water pressure at the inlet MPа 0,7 0,9 
Water flow through the boiler t/h 687,9
430  215
Specific emission of nitrogen oxides Natural gas g/m³ 0,08
0,08 0,08
diesel 0,16
0,16 0,16
Adjustment range % 30-100 30-100
Boiler weight (without burner, without water) kg 31500 31500
Water volume of boiler 5,7 5,7 
Heating surface area 798 798


GEOTHERM ® WGB (P) series boilers are designed to produce hot water. Boilers are focused on heat supply of industrial and domestic facilities.

GEOTHERM ® WGB (P) series boilers are manufactured with three temperature schedules 70-95 °C; 70-110 °C; 70-150 °C.

Boilers of the GEOTHERM ® VWS (P) series are produced with a capacity from 0.63 to 58.2 MW.

The fundamental difference between the boilers of the GEOTHERM ® WB (P) series from the boilers of the GEOTHERM WEB(3P); GEOTHERM WEB; GEOTHERM WEB(V) series is that the exhaust gases after burning the torch of the burner immediately pass through the convective surface.

Main components of GEOTHERM ® WGB (P) series boilers:

  • Collector frame - serves for the distribution of water flows depending on the hydraulic circuit of the boiler and the connection of the boiler to the external strapping.

  • The convective section is the main part of the boiler pipe system.

  • The support frame serves as the base for the installation of the boiler pipe system.

  • Stiffness belt - serves as a frame to ensure the rigidity of the boiler.

  • The flue duct with an explosive valve - serves as a channel for the discharge of exhaust gases. 
The hot water boiler GEOTHERM WGB (P) 20 runs on natural gas, the reserve fuel is diesel fuel. The boiler is of the single-pass, water-tube type.

Advantages of the boiler geotherm series:

High efficiency

Gas-tight tube

Low NOx emissions

Quick launch

Reliable and simple performance

Modern design

Possibility to use boilers in open heating systems

Package supply

Wide size range from 0,25 to 68,9 mw

Application of boilers with burners from leading European and Russian manufacturers

Low hydraulic resistance

Simplified repairs