12
For the adjustment data: NOZZLES - PRESSURES - DIAPHRAGMS - FLOW RATES - CONSUMPTIONS refer to the
paragraph ADAPTATION TO OTHER TYPES OF GAS.
Nominal heat input in CH / DHW mode kW 28,0 / 28,0
Minimum heat input with Nat. Gas / Propane kW 4,4 / 5,6
Nominal heat output kW
27
Minimum heat output kW
4,2
Nominal output in condensation 50/30 °C kW
28,5
Minimum heat output in condensation 50/30 °C kW
4,56
Combustion efciency at full load % 97,5
Combustion efciency at part load % 98,0
Heat losses through the casing (min.-max.) % 3,4 - 1,2
(*) Net ue gas temperature tf-ta (max.) °C 50,5
Flue gas mass ow rate (min.-max) g/s 1,9 - 12,3
Air excess λ %
20,6
CO
2
(min. - max) %
9,3 - 9,2
CO
at 0% of O
2
(min. - max)
ppm
13 - 70
Maximum production of condensate kg/h
4,5
NOx class
5
Chimney heat losses with burner ON (min. - max.) % 2,9 - 2,4
Chimney heat losses with burner OFF % 0,3
Prevalenza disponibile alla base del camino min. / max.
Pa 2 / 70
Notes: (*) Room Temperature = 20°C Data obtained with appliance operated with Nat Gas (G20)
Description Symbol Unit
Nominal Heat Output Pnominale kW 27
Seasonal space heating energy
efciency
ƞ
s % 93
heating mode
A
Useful Heat Output in high-tempera-
ture regime
(Tr 60 °C / Tm 80 °C)
P
4 kW 15,6
Useful efciency at nom. heat output
in high-temperature regime
(Tr 60 °C / Tm 80 °C
ƞ
4 % 86,8
Useful heat output at 30% of nom.
heat output in low-temperature
regime (Tr 30 °C)
P
1 kW 5,26
Useful efciency at 30% of nom. heat
output in low-temperature regime
(Tr 30 °C)
ƞ
1 % 97,5
Caldaia con regolazione range di
potenza: SI / NO
SI
Auxiliary electricity consumption
At full load elmax kW 0,087
At part load elmin kW 0,058
In stand-by mode P
SB kW 0,009
Other items
Stand-by heat loss P
stb kW 0,0843
Emissions of nitrogen oxides NOx Mg/kWh 58
Declared load prole XL
Energy efciency in DHW production
mode
ƞ
wh % 68,1
Daily electricity consumption Qelec kWh -
Daily fuel consumptionl Qfuel kWh 27,99
Inside sound power level Lwa dB (A) -
B
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