EN
FR
NL
ES
IT
DE
PL
RU
en
17
WaterMaster 25 - 35 - 45 - 70 - 85 - 120 : A1006482 - 664Y7300 • D
TECHNICAL CHARACTERISTICS
COMBUSTION CHARACTERISTICS
Main Characteristics
WM 25
WM 35
WM 45
G20/G25
G31
G20/G25
G31
G20/G25
G31
Input (PCI)
max
kW
25.0
25.0
35.0
35.0
45.0
45.0
min
kW
5.0
5.0
7.0
7.0
9.0
9.0
DHW efficiency (EN89)
%
108.5
108.5
108.5
108.5
108.5
108.5
Combustion
efficiency
at 100%
%
98.2
98.2
98.2
98.2
97.9
97.9
NOx (Class 5)
Max. output
mg/kWh
64
—
55
—
53
—
Min. output
mg/kWh
12
—
12
—
21
—
Weighted
mg/kWh
29
—
33
—
39
—
CO
Max. output
ppm
27
—
48
—
63
—
Min. output
ppm
6
—
4
—
4
—
CO
2
Max. output
%CO
2
8.8
10.1
9.2/8.9
10.7
9.0
10.7
Min. output
%CO
2
8.3
9.3
8.8/8.4
10.2
8.4
10.1
Max gas flow rate
G20/G25
20 mbar
m³/h
2.66
—
3.64
—
4.67
—
25 mbar
m³/h
2.96
—
4.23
—
4.67
—
Max. gas flow rate G31
30/37/50 mbar
m
3
/h
—
0.98
—
1.4
—
1.77
Temp of flue gases
Normal
°C
57.7
57.7
58.2
58.2
64.1
64.1
Max.
°C
120
120
120
120
120
120
Min.
°C
32.9
32.9
29.2
29.2
30.1
30.1
Average temp. of combus-
tion products
DHW mode
°C
52.6
52.6
52.6
52.6
52.6
52.6
Mass flow rate of flue
gases*
Normal
g/s
11.6
11.6
15.5
15.5
21.1
20.1
Min. output
g/s
2.45
2.54
3.26
3.28
4.36
4.25
Main Characteristics
WM 70
WM 85
WM 120
G20/G25
G31
G20/G25
G31
G20/G25
G31
Input (PCI)
max.
kW
69.9
69.9
85.0
85.0
115.0
115.0
min.
kW
21.5
21.5
21.0
21.0
25.0
25.0
DHW efficiency (EN89)
%
107.7
107.7
107.7
107.7
107.7
107.7
Combustion
efficiency
at 100%
%
98.1
98.1
98.0
98.0
97.5
97.5
NOx (Class 5)
Max. output
mg/kWh
65
—
48
—
48
—
Min. output
mg/kWh
23
—
26
—
23
—
Weighted
mg/kWh
39
—
36
—
37
—
CO
Max. output
ppm
34
—
51
—
58
—
Min. output
ppm
7
—
6
—
4
—
CO
2
Max. output
%CO
2
9.0
10.6
8.8/9.2
10.8
8.9/9.1
11.1
Min. output
%CO
2
8.4
10.0
8.3/8.4
10.0
8.4
10.4
Max gas flow rate
G20/G25
20 mbar
m³/h
7.2
—
8.6
—
12.0
—
25 mbar
m³/h
8.3
—
10.0
—
14.0
—
Max. gas flow rate G31
30/37/50 mbar
m3/h
—
2.77
—
3.37
—
4.68
Temp of flue gases
Normal
°C
60
60
62
62
64.6
64.6
Max.
°C
120
120
120
120
120
120
Min.
°C
29.0
29.0
28.7
28.7
28.7
28.7
Average temp. of com-
bustion products
DHW Mode
°C
51.0
51.0
51.0
51.0
51.0
51.0
Mass flow rate of flue
gases*
Normal
g/s
31.6
31.6
30.8
37.8
50.8
49.8
Min. output
g/s
10.19
9.98
10.19
9.98
12.14
11.5
* Mass flow rate values were calculated for G20 and G31 with an air factor of 1.3.