Installation and operating instruction
Oil burner WL5/2-B
4 Installation
83272202 1/2019-04 La
19-76
4.2 Selecting a nozzle
Determine nozzle size.
Recommended nozzles
For direct draught combustion chambers Weishaupt recommend 60° H nozzles for
combustion heat ratings from 44 kW.
Make
Size
Characteristics
Fluidics
0.50 … 0.85 gph
60°SF, HF
Steinen
0.50 … 0.55 gph
60°ST, HT
Steinen
0.60 … 1.25 gph
60°S, H
Pump pressure setting
10 …
12
… 14 bar
Spray characteristic and spray angle varies depending on pump pressure.
Nozzle selection table
Different load values are possible due to tolerances.
Burner capacity [kW] at pump pressure
Nozzle size [gph]
10 bar
11 bar
12 bar
13 bar
14 bar
0.50
–
–
24.9
25.8
26.2
0.55
24.9
26.0
27.1
28.2
29.3
0.60
27.0
28.3
29.6
30.9
32.0
0.65
29.8
30.9
32.1
33.3
34.5
0.75
33.3
35.7
36.9
38.1
40.5
0.85
38.1
40.5
41.7
44.0
45.2
1.00
45.2
47.6
49.5
51.2
53.6
1.10
49.5
52.4
54.7
57.1
58.3
1.25
55.9
–
–
–
–
Conversion of burner capacity to oil throughput see formula below.
Oil throughput in kg/h =
Burner capacity in kW
11.9 kWh/kg
