Installation and operating instruction
Oil burner WL10/3-D Z
4 Installation
83292802 1/2019-04 La
19-80
4.2 Selecting a nozzle
Determine nozzle size.
Load distribution
The load distribution of the burner is made via a pressure change-over on the oil
pump.
Generally, stage 1 takes on approx. 65 % of the maximum oil throughput, a different
distribution may be necessary.
Burner capacity required: approx. 90 kW
65 % of burner capacity required: 90 kW x 0.65 = 58.5 kW
Nozzle size 1.35 gph, see nozzle selection table:
Stage 1: 10 bar (60.7 kW)
Stage 2: 22 bar (90.4 kW)
Recommended nozzles
Make
Characteristics
Steinen
(1
60°S, 60°H
Fluidics
45°SF
(2
, 45°HF
(1
We recommend Fluidics nozzles for nozzle sizes 1.00 gph and 1.10 gph.
(2
Only from 12 bar pump pressure and single pipe system (higher oil temperat-
ures).
Pump pressure setting
Stage 1
Stage 2
10
… 14 bar
20 …
22
… 24 bar
Spray characteristic and spray angle varies depending on pump pressure.
Nozzle selection table
Different load values are possible due to tolerances.
Stage 1
Burner capacity [kW] at pump pressure
Nozzle size [gph]
10 bar
11 bar
12 bar
13 bar
14 bar
1.00
–
–
49.5
51.2
53.6
1.10
49.5
52.4
54.7
57.1
58.3
1.25
55.9
59.5
61.9
64.3
66.6
1.35
60.7
64.3
66.6
69.0
72.6
1.50
67.8
71.4
73.8
77.4
79.7
Stage 2
Burner capacity [kW] at pump pressure
Nozzle size [gph]
20 bar
21 bar
22 bar
23 bar
24 bar
1.00
64.3
65.5
66.6
68.5
70.2
1.10
70.2
72.0
73.8
75.0
77.4
1.25
79.7
81.5
83.3
85.0
86.9
1.35
86.9
88.0
90.4
92.5
94.0
1.50
96.4
98.0
101.2
–
–
Conversion of burner capacity to oil throughput see formula below.
Oil throughput in kg/h =
Burner capacity in kW
11.9 kWh/kg