Technical data

3
e
SECTION 2 TECHNICAL DATA
2.1 Central heating Syntesi 25 e Syntesi 29 e
Heat input 25.0 kW 29.0 kW
Max heat output 60/80°C (return & flow temp.) 24.7 kW 28.77 kW
Max heat output 30/50°C (return & flow temp.) 26.6 kW 31.06 kW
Min heat output 60/80°C (return & flow temp.) 7.28 kW 8.47 KW
Min heat output 30/50°C (return & flow temp.) 7.90 kW 9.28 KW
Minimum working pressure 0.45 bar 0.45 bar
Maximum working pressure 3.0 bar 3.0 bar
Minimum flow rate 350 l/h 350 l/h
2.2 Domestic hot water
Maximum input 25.0 kW 29.0 kW
Maximum output 24.70 kW 28.77 kW
Minimum output 7.28 kW 8.47 kW
Flow rate (35
o
C rise) 10.1 l/min 11.8 l/min
Maximum inlet pressure 6.0 bar 6.0 bar
Minimum inlet pressure 0.15 bar 0.15 bar
Minimum flow rate 2.0 l/min 2.0 l/min
2.3 Gas pressures
Inlet pressure (G20) 20.0 mbar 20.0 mbar
Burner pressure maximum 8.9 mbar 9.3 mbar
Burner pressure minimum 1.0 mbar 1.10 mbar
Maximum gas rate 2.64 Sm
3
/h 3.07 Sm
3
/h
Minimum gas rate 0.79 Sm
3
/h 0.92 Sm
3
/h
Injector size (quantity) 12 x 1.35 mm 14 x 1.35 mm
2.4 Expansion vessel
Capacity 8-litres 8-litres
Maximum system volume 76-litres 76-litres
Pre-charge pressure 1.0 bar 1.0 bar
2.5 Dimensions
Height 820mm 820mm
Width 400mm 450mm
Depth 350mm 350mm
Dry weight (kg) 44.0 45.0
2.6 Clearances
Sides 12mm
To p 150mm from casing or 25mm above flue elbow (whichever is applicable)
Bottom 150mm
Front 600mm
2.7 Connections
Flow & return 22mm
Hot & cold water 15mm
Gas 15mm
Safety valve 15mm
Condense 21mm
2.8 Electrical
Voltage (V/Hz) 230/50 230/50
Power consumption 174W 170W
Internal fuse 2A 2A
External fuse 3A 3A
2.9 Flue details (concentric)
Maximum horizontal flue length (60/100mm) 2.25m not permitted
Maximum vertical flue length (60/100mm) 3.25m not permitted
Maximum horizontal flue length (80/125mm) 5.50m 2.85m
Maximum vertical flue length (80/125mm) 7.0m 4m
2.9A Flue Details (twin pipes)
Maximum horizontal flue length (80mm + 80mm) 10m+10m 7m+7m
Maximum vertical flue length (80mm + 80mm) 10m+10m 7m+7m
2.10 Efficiency
SEDBUK (%) 90.52 91.01