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GENERAL
TECHNICAL DATA
SANITARY HOT WATER PERFORMANCE
Continuous delivery without flow limiter ∆T=30°C
11,4
l/min
Continuous delivery with flow limiter
12
l/min
Peak draw in the first 10 min.
157
Sanitary water pressure
8
bar
DESCRIPTION
ALMA 24 MBS W TOP
Fuel
G20
G30
G31
Gas supply pressure (nominal)
20 28-30
37
mbar
Boiler category
II2H3+
Type of boiler
B22 - C12 - C32 - C42 - C52 - C62 - C82
Nominal heating power (Qn)
maximum
26
kW
minimum
12,1
kW
Useful nominal output (Pn)
maximum
24,36
kW
minimum
10,68
kW
Max/min useful efficiency at Pn
93,7/88,3
%
Useful efficiency at 30% of Pn
90,7
%
Flue gas temperature (∆T) at Pn max
105
107
106
°C
Flue gas temperature (∆T) at Pn min
87
78
92
°C
Flue gas mass flow rate at Pn max
0,009
0,009
0,010
kg/s
Flue gas mass flow rate at Pn min
0,004
0,004
0,004
kg/s
CO
2
at Pn max
7,6
9
8,8
%
CO
2
at Pn min
3,5
3,46
3,45
%
CO at Pn max (0% of O
2
)
46,5
134
116
mg/kWh
CO at Pn min (0% of O
2
)
50,5
116
113
mg/kWh
NOx at Pn max (0% of O
2
)
268
379
374
mg/kWh
NOx at Pn min (0% of O
2
)
210
232
233
mg/kWh
Class NOx
2
Maximum permitted temperature
90
°C
Maximum permitted pressure for heating circuit
3
bar
Boiler water content
2
l
Water heater water content
50
l
Electrical power supply
230~50
V~Hz
Electrical power absorbed
140
W
Degree of electrical protection
X4D
IP
Heating expansion tank volume
8
l
Heating expansion tank preload
1
bar
Stack loss with burner on at Pn max
5,45
%
Stack loss with burner off
0,1
%
Mantle loss at Pn max
0,85
%
∆p minimum at air pressure switch
0,9
mbar
Noise
46
dB
Energy efficiency marking (EEC 92/42)
★ ★ ★
DESCRIPTION
ALMA 24 MBS W TOP
