en
Installation instructions
38
Type of gas
Explanation
G20/25
(20/25 mbar)
G20/25
(2.0/2.5 kPa)
For France and Belgium
Type of gas
Explanation
G2.350
(13 mbar)
G2.350 (1.3 kPa)
For Poland
G30 (50 mbar)
G30 (5.0 kPa)
The after-sales service must order
the nozzle set HEZ298070.
Nozzle values for the auxiliary burner
Note the following information for the gas types that are listed in the table for some burners.
G20/
G25
G20
G20
G25
G25
G25.3
G30/G31
G30
G30
G27
Gas pressure (kPa)
2.0/2.5 2.0
2.5
2.0
2.5
2.5
2.8–
3.0/3.7
5.0
3.7
2.0
Nozzle (mm)
0.72
0.72
0.68
0.77
0.72
0.72
0.50
0.43
0.47
0.77
Bypass nozzle (mm)
0.50
0.50
0.50
0.50
0.50
0.50
0.30
0.30
0.30
0.50
Max. input power (kW)
1
1
1
1
1
1
1
1
1
1
Min. input power (kW)
≤0.55
≤0.55
≤0.55
≤0.55
≤0.55
≤0.55
≤0.55
≤0.55
≤0.55
≤0.55
Gas flow at 15 °C and
101.325 kPa m
3
/h
0.095/
0.111
0.095
0.095
0.111
0.111
0.108
-
-
-
0.116
Gas flow at 15 °C and
101.325 kPa g/h
-
-
-
-
-
-
73/71
73
73
-
Nozzle values for the standard-output burner
Note the following information for the gas types that are listed in the table for some burners.
G20/
G25
G20
G20
G25
G25
G25.3
G30/G31
G30
G30
G27
Gas pressure (kPa)
2.0/2.5 2.0
2.5
2.0
2.5
2.5
2.8–
3.0/3.7
5.0
3.7
2.0
Nozzle (mm)
0.97
0.97
0.91
1
0.94
0.94
0.65
0.58
0.62
1
Bypass nozzle (mm)
0.58
0.58
0.58
0.58
0.58
0.58
0.38
0.38
0.38
0.58
Max. input power (kW)
1.75
1.75
1.75
1.75
1.75
1.75
1.75
1.75
1.75
1.75
Min. input power (kW)
≤0.9
≤0.9
≤0.9
≤0.9
≤0.9
≤0.9
≤0.9
≤0.9
≤0.9
≤0.9
Gas flow at 15 °C and
101.325 kPa m
3
/h
0.167/
0.194
0.167
0.167
0.194
0.194
0.190
-
-
-
0.203
Gas flow at 15 °C and
101.325 kPa g/h
-
-
-
-
-
-
127/125
127
127
-
Nozzle values for the high-output burner
Note the following information for the gas types that are listed in the table for some burners.
G20/
G25
G20
G20
G25
G25
G25.3
G30/G31
G30
G30
G27
Gas pressure (kPa)
2.0/2.5 2.0
2.5
2.0
2.5
2.5
2.8–
3.0/3.7
5.0
3.7
2.0
Nozzle (mm)
1.16
1.16
1.10
1.34
1.26
1.26
0.85
0.75
0.80
1.38
Bypass nozzle (mm)
0.75
0.75
0.75
0.75
0.75
0.75
0.46
0.46
0.46
0.75
Max. input power (kW)
3
3
3
3
3
3
3
3
3
3
Min. input power (kW)
≤1.3
≤1.3
≤1.3
≤1.3
≤1.3
≤1.3
≤1.3
≤1.3
≤1.3
≤1.3
Gas flow at 15 °C and
101.325 kPa m
3
/h
0.285/
0.332
0.285
0.285
0.332
0.332
0.325
-
-
-
0.348
Gas flow at 15 °C and
101.325 kPa g/h
-
-
-
-
-
-
218/214
218
218
-
