64
EN
5.6
Technical features
DESCRIPTION
DUETTO HE EV
25
35
CERTIFICATIONS
Country of intended installation
IT – ES – PT – EN – FR – NL – HR – DK – EL
Fuel
Diesel
PIN number
1312CS196R
Appliance classification
B23P - C23P
DHW rated useful heat output
kW
26,2
34,8
Class NO
x
(*)
3
HEATING PERFORMANCE
HEAT INPUT (**)
Nominal flow (Q
n
max)
kW
26,2
34,8
HEAT OUTPUT
Nominal (80-60°C) (P
n
max)
kW
25,1
33
Nominal (50-30°C) (P
n
max)
kW
26,5
35,5
EFFICIENCY
Useful efficiency at 100% of load
%
95,8
94,8
Useful efficiency at 30% of load
%
103,3
104,9
Minimum combustion efficiency during operation
(Italian Pres. Dec. 311)
%
91,8
92
Losses after shutdown at 50°C (EN 303)
W
68
103
ENERGY PERFORMANCE
Heating seasonal energy efficiency class
%
A
A
Heating seasonal energy efficiency
91
92
Heating sound power
dB (A)
58
59
Domestic hot water energy efficiency class
B
B
Domestic hot water energy efficiency
%
74
68
Stated domestic hot water profile load
XL
XL
ELECTRICAL SPECIFICATIONS
Power supply voltage
V
230
Frequency
Hz
50
Absorbed electrical power (Q
n
max)
W
211
Absorbed electrical power at (Q
n
min) 30%
W
64
Absorbed electrical power in stand-by
W
1
Electrical protection degree
IP
IPX2
COMBUSTION DATA
Cast iron elements
No.
3
4
Fume temperature (80-60°C)
°C
85
73
Fume mass flow rate
m3n/h
26,3
37,2
CO
2
%
12,5
12,5
NOx measured (*)
mg/kWh
107
110
TEMPERATURE - PRESSURE
Max operating temperature (T max)
°C
95
Heating adjustment range
°C
45÷85
Max operating pressure
bar
4
kPa
392
Water content in thermal unit
l
18
22
Expansion vessel capacity
l
10
10
Expansion vessel pressure
bar
1
1
kPa
98
98
Head loss fume side (****)
mbar
0,16
0,2
kPa
0,016
0,02
Combustion chamber pressure (****)
mbar
0,16
0,2
kPa
0,016
0,02
Recommended negative pressure at flue
mbar
0,3
0,3
kPa
0,03
0,03
PRODUCING DOMESTIC HOT WATER
Domestic hot water adjustment range
°C
30÷60
Specific DHW flow rate (EN 13203)
l/min
12
14 (***)
Continuous DHW flow rate (ΔT 30°C)
l/min
12
14 (***)
Minimum DHW flow rate
l/min
2,5
2,5
Max calorifier operating pressure (PMW)
bar
6
6
kPa
588
588
(*)
NOx Class as per EN 267:2009
(**)
Heat input calculated using the lower heat output (Hi)
(***)
Values relevant to DHW inlet pressure of 3 bar
(****)
Data measured with flue draught of 0 mbar
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