Version 1: December 2020
17
manual: 0009 0251EN-Alke
Technical table
Gas
group
Gas
Max
Supply
pressure
Min
Supply
pressure **
Max
Heat
Input
Min
Heat
Input
Gas
consumption
Main
Injector
By-pass
hole **
S-model
Venturi
Air
restrictor
NOx
Class
Remarks
(-)
(-)*
(mbar)
(mbar)
(kW Hs) (kW Hs) (g/h or m3/h)
(mm)
(mm)
(mm)
(-)
(-)
(-)
AL-8 series
2E, 2E+, 2H G20
20
12
5,8
4,5
0,56 m3/h
1,75
2,10
26,0
X
5
2LL
G25
20
12
5,8
4,5
0,65 m3/h
1,93
2,30
26,0
X
5
2K
G25.3
25
15
6,0
4,6
0,65 m3/h
1,82
2,15
26,0
X
5
2L
G25
25
15
6,0
4,6
0,65 m3/h
1,82
2,15
26,0
X
5
3P
G31
50
25
5,7
4,0
408 g/h
1,08
1,08
26,0
X
5
AL-10 series
2E, 2E+, 2H G20
20
12
9,4
7,2
0,90 m3/h
2,20
2,35
X
X
5
2LL
G25
20
12
9,4
7,2
1,05 m3/h
2,45
2,60
X
62
5
2K
G25.3
25
15
9,3
7,1
1,01 m3/h
2,25
2,35
26,0
X
5
2L
G25
25
15
9,3
7,1
1,01 m3/h
2,25
2,35
26,0
X
5
3P
G31
50
25
9,1
6,4
651 g/h
1,37
1,37
X
57
5
AL-12 series
2E, 2E+, 2H G20
20
12
12,3
9,4
1,17 m3/h
2,50
2,70
X
X
5
2LL
G25
20
12
12,3
9,4
1,37 m3/h
2,80
2,95
X
57
5
2K
G25.3
25
15
12,2
9,3
1,32 m3/h
2,55
2,70
X
60
5
2L
G25
25
15
12,2
9,3
1,32 m3/h
2,55
2,70
X
60
5
3P
G31
50
25
11,9
8,3
851 g/h
1,55
1,55
X
57
5
* G31 = propane, G20 = natural gas (100% methane), G25 = natural gas (86% methane); G25.3 = natural gas (88% methane)
** In case the heater is equipped with a bypass hole (S version) the heater shall be operated on maximum supply pressure only. See also the pressure
information on the data plate.
Conversion calculation from gross heat input kW(Hs) to nett heat input kW(Hi):
Propane: divide gross heat input kW(Hs) by factor 1,09 (example: 1,20 kW(Hs) / 1,09 = 1,10 kW(Hi)
Natural gas: divide gross heat input kW(Hs) by factor 1,11 (example: 1,20 kW(Hs) / 1,11 = 1,08 kW(Hi)
