Bosch WR8/11 G Series, Installation And Operating Istructions

Page: 7 / 36

6 720 607 845 (2015/05)
Technical Characteristics and Dimensions | 7
2.8 Technical characteristics
Technical characteristics Symbol Units WR8 WR11
Power and flow
Nominal useful power Pn kW 11,8 19,2
Minimum useful power Pmin kW 7 7
Useful power (adjustment range) kW 7 - 11,8 7 - 19,2
Nominal thermal flow Qn kW 13,5 21,8
Minimum thermal flow Qmin kW 8,1 8,1
Gas data
1)
1) Hi 15 °C - 1013 mbar - dry: Natural gas 34.2 MJ/ m³ (9.5 kWh/ m³)
LPG: Butane 45.72 MJ/kg (12.7 kWh/kg) - Propane 46.44 MJ/kg (12.9 kWh/kg)
Supply pressure
LPG (butane/propane) G30/G31 mbar 28-30/37 28-30/37
Consumption
LPG (butane/propane) G30/G31 kg/h 1,0 1,6
Number of injectors 12 12
Water data
Maximum permissible pressure
2)
2) Considering the water dilution effect this value must not be exceeded
pw bar 12 12
Temperature selector in fully clockwise position
Temperature rise °C 50 50
Flow range l/min 2 - 3,5 2 - 5,5
Minimum operating pressure pwmin bar 0,35 0,35
Minimum pressure for maximum flow bar 0,55 0,65
Temperature selector in fully anti-clockwise position
Temperature rise °C 25 25
Flow range l/min 4 - 7 4 - 11
Minimum operating pressure bar 0,45 0,45
Minimum pressure for maximum flow bar 1,0 1,0
Combustion products
3)
3) For nominal calorific power.
Minimum low pressure mbar 0,015 0,015
Flow g/s 13 13
Temperature °C 170 170
Table 5