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4.5 Technical data M290E.28CV
(nom.Q.) Nominal heating/d.h.w.
heat input (Hi)
(nom.Q.) Minimum heat input (Hi)
for heating
(nom.Q.) Minimum d.h.w. heat input
(Hi)
Maximum output power for heat-
ing/d.h.w.
Minimum output power for heating
Minimum output power for d.h.w.
Measured efficiency
Nominal efficiency 60°/80°C
Min. efficiency 60°/80°C
Efficiency at 30 % of load
Energy efficiency
Heat loss at the chimney with burner
operating
Heat loss at the chimney with burner
off ΔT 50°C
Heat loss towards the environment
through the casing with the burner
operating
NOx class
Weighted NOx ***
- 22 -
TECHNICAL SPECIFICATIONS
kW
31,1
kcal/h
26741
kW
13
kcal/h
11178
kW
13,0
kcal/h
11178
kW
29,1
kcal/h
25021
kW
11,8
kcal/h
10146
kW
11,8
kcal/h
10146
%
93,3
%
90,6
%
92,2
* * *
Pf (%)
5,2
Pfbs (%)
0,2
Pd (%)
1,5
2
mg/kWh
179
ppm
101
Heating
Adjustable temperature **
Max. operating temp.
Maximum pressure
Minimum pressure
Available pressure difference (at
1000 l/h)
** At minimum useful power
Domestic hot water
Temp. Minimum-Maximum
* Reference standard EN 625
Gas supply pressures
Gas
Nom.
Methane G20
Min.
Max.
Nom.
Propane G31
Min.
Max.
Electrical data
Voltage
Frequency
Electric power
Degree of protection
°C
38 - 85
°C
90
kPa
300
bar
3,0
kPa
30
bar
0,3
kPa
21,0
bar
0,210
°C
35 - 60
Pa
mbar
2000
20
1700
17
2500
25
3700
37
2500
25
4500
45
V
220
Hz
50
W
116
IPX5D
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