Unical !DEA AC 23 - Operating Data and General Features

14
!DEA   
Maximum thermal ow rate kW 25,5 25,5 26,5
Minimum thermal ow rate kW 11,5 11,5 11,5
Effective nominal output kW 22,9 23,1 23,9
Minimum effective output kW 9,9 10,3 10,1
Combustion efciency with nominal load (100%) % 91,0 91,0 92,7
Combustion efciency with reduced load % 88,0 88,6 89,5
Heat loss at casing (min.-max.) % 1,68 - 1,12 0,6 - 0,42 1,64 - 2,51
(*) Flue gas temperature tf-ta (max.) °C 107,5 107,5 91,7
Flue gas mass ow rate (min.-max) g/s 16,76 - 8,85 16,76 - 8,85 16,91 - 19,36
Excess λ air % 122,1 122,1 109,96
CO
2
% 2,4 - 5,0 2,4 - 5,0 2,5 - 5,3
CO at Minimum Heat Input with 0% of O2 ppm 37 - 94 37 - 94 24 - 91
NOx Class 2 2 2
Heat loss at chimneywithburneron(min.-max.) % 11,97 - 9,02 11,4 - 9,02 10,48 - 7,31
Heat loss at chimney with burner off % 0,59 0,59 0,51
Available head at the base of the chimney Min. / Max.
Pa - - -
Notes: (*) Room Temperature = 20°C Data detected with appliance running on Methane gas (G20)
Description Symbol Unit !DEA
  
Nominal Heat Output Pnominale kW 23 23 24
Seasonal space heating energy
efciency
ƞ
s % 78 79 79

heating mode
C C C

Useful Heat Output in high-tempera-
ture regime
(Tr 60 °C / Tm 80 °C)
P
4 kW 22,9 23,1 23,9
Useful efciency at nom. heat output
in high-temperature regime
(Tr 60 °C / Tm 80 °C
ƞ
4 % 81 81,6 81,3
Useful heat output at 30% of nom.
heat output in low-temperature
regime (Tr 30 °C)
P
1 kW 6,84 7,0 7,2
Useful efciency at 30% of nom. heat
output in low-temperature regime
(Tr 30 °C)
ƞ
1 % 80,6 82,5 81,7
Range-rated boiler: YES / NO NO NO NO
Auxiliary electricity consumption
At full load elmax kW 0,058 0,058 0,058
At part load elmin kW 0,055 0,055 0,055
In stand-by mode P
SB kW 0,001 0,001 0,001
Other items
Stand-by heat loss P
stb kW 0,1676 0,1676 0,1349
Emissions of nitrogen oxides NOx Mg/kWh 184 184 153

Declared load prole M M L
Energy efciency in DHW production
mode
ƞ
wh % 64 60 59
Daily electricity consumption Qelec kWh - - -
Daily fuel consumptionl Qfuel kWh 9,19 9,69 19,89
Inside sound power level Lwa dB (A) 56,4 56,3 51,4


B B B
 
For the adjustment data: NOZZLES - PRESSURE - DIAGRAMS - FLOW RATES - CONSUMPTION refer
to the paragraph ADAPTATION TO OTHER TYPES OF GAS.
