Immergas MINI NIKE 3 E - Page 162

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3.19 COMBUSTION PARAMETERS.
- Flue temperature values refer to an air inlet
temperature of 15°C.
- e data relevant to domestic hot water per-
formance refer to a dynamic inlet pressure of
2 bar and an inlet temperature of 15°C; the
values are measured directly at the boiler outlet
considering that to obtain the data declared
mixing with cold water is necessary.
- e max. sound level emitted during boiler
operation is < 55dBA. e sound level value is
referred to semianechoic chamber tests with
boiler operating at max. heat output, with
extension of ue exhaust system according to
product standards.
3.20 TECHNICAL DATA.
Nominal heat input kW (kcal/h) 26.2 (22492)
DHW minimum heat input kW (kcal/h) 8.3 (7116)
CH minimum heat input kW (kcal/h) 10.9 (9357)
Nominal heat output (useful) kW (kcal/h) 23.8 (20468)
DHW minimum heat output (useful) kW (kcal/h) 7.0 (6020)
CH minimum heat output (useful) kW (kcal/h) 9.4 (8084)
Eciency at nominal heat output % 91.0
Eciency at 30% nominal heat output load % 89.3
Heat loss at case with burner On/O % 2.30 / 1.20
Heat loss at ue with burner On/O % 6.70 / 0.09
Central heating circuit max. operating pressure bar 3
Central heating circuit max. operating temperature °C 90
Adjustable central heating temperature °C 35 - 85
System expansion vessel total volume l 4.0
Expansion vessel factory-set pressure bar 1
Water content in generator l 2.5
Total head available with 1000 l/h ow rate kPa (m H
2
O) 24.52 (2.5)
Hot water production useful heat output kW (kcal/h) 23.8 (20468)
Domestic hot water adjustable temperature °C 30 - 60
Domestic hot water circuit ow limiter at 2 bar l/min 7.1
Min. pressure (dynamic) domestic hot water circuit bar 0.3
Domestic hot water circuit max. working pressure bar 10
Minimum D.H.W. ow rate l/min 1.5
Specic ow rate (∆T 30°C) l/min 11.1
Drawing capacity in continuous duty (∆T 30°C) l/min 11.4
Weight of full boiler kg 28.6
Weight of empty boiler kg 26.1
Electrical connection V/Hz 230/50
Power input A 0.44
Installed electric power W 95
Pump consumption W 87
Equipment electrical system protection - IPX4D
Boiler ue circuit resistance Pa 1.3
NO
X
class - 3
Weighted NO
X
mg/kWh 139
Weighted CO mg/kWh 52
Type of appliance B11BS
Category II2H3+
G20 G30 G31
Gas nozzle diameter mm 1.30 0.78 0.78
Supply pressure mbar (mm H
2
O) 20 (204) 29 (296) 37 (377)
Flue ow rate at nominal heat output kg/h 74 73 74
Flue ow rate at min heat output kg/h 65 61 64
CO
2
at Q. Nom./Min. % 4.95 / 1.70 5.80 / 2.10 5.65 / 2.00
CO with 0% O
2
at Q. Nom./Min. ppm 62 / 76 100 / 100 56 / 106
NO
X
with 0% O
2
at Q. Nom./Min. mg/kWh 180 / 125 310 / 128 255 / 124
Flue temperature at nominal output °C 94 96 94
Flue temperature at minimum output °C 82 83 81