VOKERA Syntesi - Technical Data Page; 2.1 Central Heating; 2.2 Domestic Hot Water; Gas Pressure

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SECTION 2 TECHNICAL DATA
2.1 Central heating Syntesi 25 Syntesi 29 Syntesi 35
Heat input 25.0 kW 29.0 kW 35.0 kW
Max heat output 60/80°C (return & flow temp.) 24.1 kW 28.0 kW 33.9 kW
Max heat output 30/50°C (return & flow temp.) 25.9 kW 29.7 kW 36.2 kW
Min heat output 60/80°C (return & flow temp.) 9.5 kW 9.5 kW 9.4 kW
Min heat output 30/50°C (return & flow temp.) 10.1 kW 10.2 kW 10.2 kW
Minimum working pressure 0.45 bar
Maximum working pressure 3.0 bar
Minimum flow rate 350 l/h
2.2 Domestic hot water
Maximum input 25.0 kW 29.0 kW 35.0 kW
Maximum output 24.1 kW 28.0 kW 33.9 kW
Minimum output 9.5 kW 9.5 kW 9.4 kW
Flow rate (35
o
C rise) 9.9 kW 11.5 kW 13.9 kW
Maximum inlet pressure 6.0 bar
Minimum inlet pressure 0.15 bar
Minimum flow rate 2.0 l/min
2.3 Gas pressures
Inlet pressure (G20) 20.0 mbar
Burner pressure maximum 8.8 mbar 9.3 mbar 10.1 mbar
Burner pressure minimum 1.5 mbar 1.25 mbar 1.00 mbar
Maximum gas rate 2.65 Sm
3
/h 3.07 Sm
3
/h 3.75 Sm
3
/h
Minimum gas rate 1.05 Sm
3
/h 1.05 Sm
3
/h 1.05 Sm
3
/h
Injector size (quantity) 12 x 1.35 mm 14 x 1.35 mm 16 x 1.35 mm
2.4 Expansion vessel
Capacity 8-litres 10-litres
Maximum system volume 76-litres 91-litres
Pre-charge pressure 1.0 bar
2.5 Dimensions
Height 820mm
Width 400mm 450mm 500mm
Depth 350mm
Dry weight (kg) 44.0 45.0 48.0
2.6 Clearances
Sides 12mm
Top 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
Power consumption 174W 174W 194W
Internal fuse 2A
External fuse 3A
2.9 Flue details (concentric)
Maximum horizontal flue length (60/100mm) 5.75m 4.90m 0.75m
Maximum vertical flue length (60/100mm) 6.55m 5.70m 1.55m
Maximum horizontal flue length (80/125mm) 13.80m 11.80m 6.75m
Maximum vertical flue length (80/125mm) 15.30m 13.30m 8.25m
2.9A Flue Details (twin pipes)
Maximum horizontal flue length (80mm + 80mm) 25m+25m 20m+20m 10m+10m
Maximum vertical flue length (80mm + 80mm) 25m+25m 20m+20m 10m+10m
2.10 Efficiency
SEDBUK (%) 87.4 87.5 88.1