Technical data

4
FLUE GAS AND CONDENSATE DATA
Flue Gas, Mass Flow kg/h Max. 38.5
Min. 11.5
Flue Gas Temperature °C Max. 71
Flow 80°C Return 60°C Min. 62
Flue Gas Temperature °C Max. 36
Flow 50°C Return 30°C Min. 32
Condensate Volume l/h Max. 2.2
Return 30°C Min. 0.94
Condensate pH Nominal 4.1
CO
2
% Min,=Max. 9.3 - 9.7
NOx Class 5
Table 5
PUMP HEAD & PRIMARY FLOW
BOILER AVAILABLE
NOMINAL TEMPERATURE BOILER
OUTPUT HEAD
SYSTEM RISE ACROSS FLOW
kW m
FLOW RATE THE SYSTEM TEMPERATURE
l/min °C °C
23.5 2 20 20 80
25.3 2 16-18 20 50
Table 4
CENTRAL HEATING
Heat Output 80/60°C kW Max. 23.5
Min. 6.7
Heat Output 50/30°C kW Max. 25.3
Min. 7.7
SEDBUK No. BAND A 91.3
Table 6
Note: To gain maximum benefit from the performance of the appliance the
radiators must be sized according to the Flow/Return temperatures.
Total length of gas supply pipe Pipe diameter
(metres) (mm)
369
Gas Discharge Rate (m
3
/h)
8.7 5.8 4.6 22
18.0 12.0 9.4 28
Table 8
EXPANSION VESSEL PRESSURE & SYSTEM CAPACITY
Expansion Vessel litres 10
Expansion Vessel Charge Pressure bar 0.75
System Capacity 1 bar litres 82
Ref. BS 7074:1 1.5 bar litres 46
Table 9.
DOMESTIC WATER PERFORMANCE
Domestic
Temperature Rise 30°C 11.1
Water Flow Temperature Rise 35°C 9.5
Rate l/min
Temperature Rise 40°C 8.4
Maximum Mains Pressure bar 8.0
Minimum Mains Pressure bar 0.2
Table 10
Factory Setting
Pump Control Mode 2
Anti-Cycle Time min 3
Maximum CH Temperature °C 80
ThermostatTemperature Differential °C 8
Maximum CH Output kw 23.0 standard
25.3 condensing
Minimum CH Output kw 6.7 standard
7.7 condensing
Table 7
HORIZONTAL 100mm
Overall Diameter of Duct mm 100
Flue Terminal/Duct Assembly Length mm 600
Extension Duct Length mm 1000
Overall Diameter of Duct 125mm
ACCESSORIES
Extension Flue Kit 100mm Part No. 7 719 001 892
Vertical Adaptor
90° Elbow Part No. 7 719 001 891
45° Elbow Part No. 7 719 001 899
125MM STANDARD FLUE KIT comprises:
1 x Flue turret Elbow
670mm of Flue Duct
(as measured from the centre of turret)
Table 3
ALTERNATIVE HORIZONTAL 125mm FLUE SYSTEM
VERTICAL BALANCED FLUE KIT comprises:
1 x 1 Flue Terminal Assembly
1 x Vertical Adaptor
ACCESSORIES
Extension Flue Kit 100mm Part No. 7 719 001 892
90° Elbow Part No. 7 719 001 891
45° Elbow Part No. 7 719 001 899
Part No. 7 719 001 885
Part No. 7 719 001 888
Max. 2m
Part No. 7 719 001 890
Part No. 7 719 001 890
Note: The roof flashing is not supplied by Bosch.