Technical Data - DeDietrich NeOvo EcoNox EFU 22 User Manual

3 Technical specifications
3.2

Technical data

Tab.3 Technical parameters for boiler space heaters
Product name
Condensing boiler
Low-temperature boiler
(1)
B1 boiler
Cogeneration space heater
Combination heater
Rated heat output
Useful heat output at rated heat output and high tem­
perature regime
(2)
Useful heat output at 30% of rated heat output and low
temperature regime
(1)
Seasonal space heating energy efficiency
Useful efficiency at rated heat output and high temper­
ature regime
(2)
Useful efficiency at 30% of rated heat output and low
temperature regime
(1)
Auxiliary electricity consumption
Full load
Part load
Stand-by
Other characteristics
Standby heat loss
Ignition burner power consumption
Annual energy consumption
Sound power level, indoors
Emissions of nitrogen oxides
(1) Low temperature means for condensing boilers 30°C, for low temperature boilers 37°C and for other heaters 50°C return temperature (at
heater inlet).
(2) High temperature regime means 60°C return temperature at heater inlet and 80°C feed temperature at heater outlet.
Tab.4 General
Useful output Pn - at 80/60°C
Heating mode
Nominal input Qn - Hi
Heating mode
Efficiency Hi - 100% Pn - Average temperature 70°C
Heating mode under full load
Efficiency Hi - 30% Pn - Average temperature 40 °C
Heating mode under part load
Nominal water flow rate at Pn and ΔT = 20K
Standby losses Pstby at ΔT = 30K
Loss through the outer casing at Δt = 30K
10 EFU
Prated
kW
P
kW
4
P
kW
1
ƞ
%
s
ƞ
%
4
ƞ
%
1
elmax
kW
elmin
kW
P
kW
SB
P
kW
stby
P
kW
ign
Q
GJ
HE
L
dB
WA
NO mg/kWh
X
See
The back cover for contact details.
Unit
kW
kW
%
%
m
W
%
EFU 22 EFU 29
No No
Yes Yes
No No
No No
No No
22 30
22.4 29.8
7.0 9.3
86 86
87.5 87.3
91.2 90.6
0.143 0.144
0.050 0.050
0.004 0.004
0.083 0.095
-- --
74 100
60 60
100 102
EFU 22
22.4
24
93.3
97.3
0.964
3
/h
83
88
7615193 - v01 - 09072015
EFU 29
29.8
32
93.1
96.6
1.282
95
88