19
5.5
Technical features
DESCRIPTION
MURELLE.HT
25
30
35
CERTIFICATIONS
Country of intended installation
IT - ES - PT - EN - FR - DE - NL - CZ - RU
Fuel
G20 / G31
PIN number
1312CS6249
Category
II2H3P
Appliance classification
B23P - B53P - C(10)3 - C13 - C33 - C43 - C53 - C83 - C93
Class NO
x
(*)
6 (< 56 mg/kWh)
DHW rated useful heat output
kW
24,5
29,5
34,5
HEATING PERFORMANCE
HEAT INPUT (**)
Nominal flow (Q
n
max)
kW
24,5
29,5
34,5
Minimum flow G20/G31 (Q
n
min)
kW
1,75 / 3,5
2,1 / 4,2
2,5 / 6,0
HEAT OUTPUT
Nominal useful output G20/G31 (80-60°C) (P
n
max)
kW
24,2
29,1
33,9
Nominal useful output G20/G31 (50-30°C) (P
n
max)
kW
26,4
31,8
37,2
Minimum G20 (80-60°C) (P
n
min)
kW
1,65
1,93
2,33
Minimum G20 (50-30°C) (P
n
min)
kW
1,81
2,17
2,60
Minimum G31 (80-60°C) (P
n
min)
kW
3,30
3,86
5,60
Minimum G31 (50-30°C) (P
n
min)
kW
3,62
4,34
6,19
EFFICIENCY
Max useful efficiency (80-60°C)
%
98,7
98,8
98,2
Min useful efficiency (80-60°C)
%
94,3
91,9
93,3
Max useful efficiency (50-30°C)
%
107,9
107,8
107,7
Min useful efficiency (50-30°C)
%
103,4
103,3
103,2
Useful efficiency at 30% of load
%
108,6
108,5
108,6
Losses after shutdown at 50°C
W
95,0
101,0
113
DOMESTIC HOT WATER PERFORMANCE
Nominal heat input (Q
nw
max)
kW
24,5
29,5
34,5
Minimum heat input G20/G31 (Q
nw
min)
kW
1,75 / 3,5
2,1 / 4,2
2,5 / 6,0
Specific D.H.W. flow rate ΔT 30°C (EN 13203)
l/min
11,4
14,0
16,1
Continuous D.H.W. flow rate (ΔT 25°C / ΔT 35°C)
l/min
14,1 / 10,1
17,0 / 12,1
19,7 / 14,1
Minimum D.H.W. flow rate
l/min
2
2
2
Max (PMW) / Min Pressure
bar
7 / 0,5
7 / 0,5
7 / 0,5
kPa
700 / 50
700 / 50
700 / 50
ENERGY PERFORMANCE
HEATING
Heating seasonal energy efficiency class
A
A
A
Heating seasonal energy efficiency
%
93
93
93
Sound power
dB(A)
51
52
53
DOMESTIC HOT WATER
Domestic hot water energy efficiency class
A
A
A
Domestic hot water energy efficiency
%
82,4
82,2
80,8
Stated domestic hot water profile load
XL
XL
XL
ELECTRICAL SPECIFICATIONS
Power supply voltage
V
230
230
230
Frequency
Hz
50
50
50
Absorbed electrical power (Q
n
max)
W
89
99
105
Absorbed electrical power at (Q
n
min)
W
61
63
64
Absorbed electrical power in stand-by
W
5
5
5
Electrical protection degree
IP
X5D
X5D
X5D
COMBUSTION DATA
Smoke temperature at Max/Min flow (80-60°C)
°C
79,9 / 68,4
79,5 / 70,1
79,4 / 62,3
Smoke temperature at Max/Min flow (50-30°C)
°C
56,4 / 52,8
54,8 / 53,0
58,1 / 51,8
Smoke flow Max/Min
g/s
11,5 / 0,9
14,3 / 1,0
15,9 / 1,2
CO
2
at Max/Min flow rate (G20)
%
9,3 / 8,8
9,0 / 9,0
9,5 / 9,0
CO
2
at Max/Min flow rate (G31)
%
10,0 /10,0
10,0 / 9,7
10,3 / 10,3
NOx measured
mg/kWh
38
45
45
(*)
NOx class according to UNI EN 15502-1:2021
(**)
Heat input calculated using the lower heat output (Hi)
Lower Heat Output (Hi)
G20 Hi.
9.45 kW/m
3
(15°C, 1013 mbar) -
G31 Hi.
12.87 kW/kg (15°C, 1013 mbar)
