Bosch TF250, Installation Manual And Operating Instructions

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Technical Characteristics and Dimensions
Pilot Ignition – 6 720 886 398 (2021/02)
2.6 Technical characteristics
Technical characteristics Units TF250... TF400...
Gas Consumption
Nominal Gas Consumption MJ/h 82 130
Ø burner injector mm 1.20 (NG)
0.75 (LPG)
1.30 (NG)
Supply pressure flowing
Natural gas (When operating) kPa 1.13 1.13
LP gas (When operating) kPa 2.6 2.6
Number of injectors 12 18
Water data
Maximum permissible pressure (Static) kPa 1200 1200
Temperature selector in fully clockwise position
Temperature rise (Above incoming water temperature) °C 55 _
Water flow range (Litres per minute) l/min 3.5 to 4.5 _
Minimum operating water pressure kPa 30 (NG)
10 (LPG)
_
_
Minimum constant water pressure for minimum flow kPa 60 _
Temperature selector in fully anti-clockwise position
Temperature rise (Above incoming water temperature) °C 25 _
Water flow range (Litres per minute) l/min 4 to 10 _
Minimum operating water pressure kPa 45 _
Minimum constant water pressure for maximum flow kPa 90 (NG)
55 (LPG)
_
Table 5