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Installation and operating instruction
Oil burner WL30Z-C
4 Installation
83297902 3/2019-11 La
20-112
4.2 Selecting the nozzles
Determine the size of the nozzle relative to the load distribution.
Load distribution
The oil throughput at stage 2 equates to 100 % of the total load.
Divide total load (100 %) between the 2 oil nozzles:
stage 1 must lie within the capacity graph,
observe capacity range of boiler,
observe flue gas temperature (boiler, chimney),
observe heat demand,
observe start behaviour of burner.
Typical distribution of load, a different distribution may be required:
Nozzle 1: 55 %
Nozzle 2: 45 %
Example
Burner capacity required: approx. 250 kW
55 % of burner capacity required: 250 kW × 0.55 = 137.5 KW
45 % of burner capacity required: 250 kW × 0.45 = 112.5 kW
Nozzle size at 12 bar, see nozzle selection table:
Nozzle 1 (135.7 kW): 2.75 gph
Nozzle 2 (111.9 kW): 2.25 gph
Recommended nozzles
Make
Characteristics
Steinen
60°S, 60°SS
Fluidics
60°SF
Pump pressure setting
10 …
12
… 14 bar
Spray characteristic and spray angle varies depending on pump pressure.