HeatMaster 25 C: A1003474 - 664Y7000 • B
en
18
EN
FR
NL
ES
IT
DE
PL
RU
TECHNICAL CHARACTERISTICS
COMBUSTION CHARACTERISTICS
Main Characteristics
HM 25 C
G20/G25
G31
Input (PCI)
max
kW
25.0
25.0
min
kW
5.0
5.0
Output at 100%
(80/60°C)
kW
24.3
24.3
(50/30°C)
kW
26.0
26.0
Efficiency at 100%
(80/60°C)
%
97.3
97.3
(50/30°C)
%
103.9
103.9
Efficiency at 30% load (EN677)
%
108.9
108.9
Combustion efficiency
at 100%
%
98.2
98.2
NOx (Class 5)
Max. output
mg/kWh
64
—
Min. output
mg/kWh
12
—
Weighted
mg/kWh
29
—
CO
Max. output
ppm
27
—
Min. output
ppm
6
—
CO
2
Max. output
%CO
2
8.8
10.1
Min. output
%CO
2
8.3
9.3
Max gas flow rate
G20/G25
20 mbar
m³/h
2.66
—
25 mbar
m³/h
2.96
—
Max. gas flow rate G31
30/37/50 mbar
m
3
/h
—
0.98
Kg/h
—
1.9
Temp of flue gases
Normal
°C
57.7
57.7
Max.
°C
120
120
Min.
°C
32.9
32.9
Average temp. of combus-
tion products
DHW mode
°C
52.6
52.6
Mass flow rate* of flue
gases
Normal
g/s
11.6
11.6
Min. output
g/s
2.45
2.54
Standby loss
∆
T = 45 K
W
187
187
∆
T = 30 K
W
113
113
GAS CATEGORIES
Gas type
G20
G25
G20
G25
G31
Pressure (mbar)
20
20
25
20
25
30
37
50
Country code
Category
AT
II2H3P
BE
I2E(S)
I3P
CH
II2H3P
CZ
II2H3P
DE
II2E3P
II2ELL3P
ES
II2H3P
FI
II2H3P
FR
II2Er3P
GB
II2H3P
GR
II2H3P
HR
II2H3P
IE
II2H3P
IT
II2H3P
LT
II2H3P
LU
II2E3P
LV
I2H
NL
II2L3P
PL
II2E3P
PT
II2H3P
RO
II2H3P
SI
II2H3P
SK
II2H3P
* Mass flow rate values were calculated for G20 and G31 with an air factor of 1.3.
