4
Ref. Condition 15 °C, 1013,25 mbar, dry gas
NOTE:
L.P.G. data refer to section 10
SECTION 2
TECHNICAL DATA
2.1 Central Heating
Mynute 20 VHE
Heat input (kW)
20
Maximum heat output (kW) 60/80°C
19.68
Minimum heat output (kW) 60/80°C
5
Maximum heat output (kW) 30/50°C
21.16
Minimum heat output (kW) 30/50°C
5.30
Minimum working pressure
0.1 bar
Maximum working pressure
3.0 bar
Minimum flow rate
850 l/h*
2.2 Gas Pressures
Inlet pressure (G20)
20.0 mbar
Maximum gas rate (m
3
/hr)
2.12
Minimum gas rate (m
3
/hr)
0.53
Injector size
4.6mm
2.3 Dimensions
Height
740mm
Width
400mm
Depth
340mm
Dry weight
28 kg
2.4 Clearances
Sides
12mm
Top
150mm from casing or 25mm above flue elbow (whichever is applicable)
Bottom
150mm
Front
600mm
2.5 Connections
Flow & return
22mm
Gas
15mm
Condense
21mm
2.6 Electrical
Power consumption (Watts)
75
Supply (V/Hz)
230/50
Internal fuse
3.15A T (for PCB) - 3.15A F (for connections block)
External fuse
3A
2.7 Flue Details (concentric - 60/100)
Maximum horizontal flue length (60/100mm)
7.8m
Maximum vertical flue length (60/100mm)
8.8m
2.7A Flue Details (concentric 80/125mm)
Maximum horizontal flue length (80/125mm)
20m
Maximum vertical flue length (80/125mm)
25m
2.7B Flue Details (twin pipes)
Maximum horizontal flue length (80mm/80mm)
40m/40m
Maximum vertical flue length (80mm/80mm)
40m/40m
2.8 Efficiency
SEDBUK (%)
90.5
Band ‘A’
2.9 Emissions
CO
2
@ maximum output (%)
9.0
CO
2
@ minimum output (%)
9.0
CO/CO
2
ratio @ maximum output
0.001 to 1
CO/CO
2
ratio @ minimum output
0.0004 to 1
CO @ maximum output (mg/kWh)
161.3
CO @ minimum output (mg/kWh)
43.0
NOx @ maximum output mg/kWh)
79.4
NOx @ minimum output (mg/kWh)
53.0
NOx rating
class 5
*The system should be so designed and balanced to ensure a
minimum and maximum temperatute differential of 10 °C and
20 °C respectively, when the appliance is operating at maximum
output.