Bosch T4200 18-2D - Technical Data Specifications

9
Technical Characteristics and Dimensions
Therm 4200 – 6 720 821 605 (2017/08)
2.9 Technical Data
Table 4
Technical Data Symbol Units T4200 11-2D T4200 14-2D T4200 18-2D
Output and heat demand
Rated max. heat output Pn kW
(Btu/h)
19,2
(65570)
23,6
(80595)
30,5
(104165)
Rated min. heat output Pmin kW
(Bt
u/h)
7,0
(23905)
9,0
(30710)
9,3
(31733)
Output (modulation range) kW
(Btu/h)
7 - 19,2
(23905-65570)
9,0 - 23,6
(30710-80595)
9,3 - 30,5
(31733-104165)
Rated max. heat input Qn kW
(Bt
u/h)
21,8
(74450)
27,0
(92210)
34,5
(117825)
Rated min. heat input Qmin kW
(Btu/h)
9,5
(32415)
10,4
(35486)
10,8
(36851)
Gas supply specifications
1)
1) Hi 15 °C - 1013 mbar - dry: Natural gas 34.2 MJ/m
3
(9.5 kWh/m
3
) 
LPG: Butane 45.72 MJ/kg (12.7 kWh/kg) - Propane 46.44 MJ/kg (12.9 kWh/kg)
Supply pressure
Natural gas H G20 kPa 2,0 2,0
2,0
LPG (butane/propane) G30/G31 kPa 2,8 2,8 2,8
Consumption
Natural gas H G20 m
3
/h 2,2 2,77 3,5
LPG (butane/propane) G30/G31 kg/h 1,75 2,2
2,79
Number of injectors 12 14 18
Water system specifications
Max. water pressure
2)
2) Considering the water dilution effect this value must not be exceeded
pw MPa 1,2 1,2 1,2
Temperature control at maximum setting
Temperature increase °C 50 50 50
Flow range l/min 2 - 5,5 2 - 7
2 - 8,8
Min. operating pressure pw
min
MPa 0,01 0,01 0,02
Minimum pressure for maximum flow MPa 0,025 0,035
0,05
Temperature control at minimum setting
Temperature increase °C 25 25
25
Flow range l/min 4 - 11 4 - 14 4 - 17,6
Min. operating pressure MPa 0,02 0,02
0,02
Minimum pressure for maximum flow MPa 0,06 0,1 0,13
Flue specifications
3)
3) For nominal calorific power
Draught requirement MPa 0,0015 0,0015 0,0015
Flow rate g/s 13 17
22
Temperature °C 160 170 180