Lamborghini Caloreclima PNZ 30 Manual Del Usario página 26

OPERATION CURVE
mbar
10
5
0
-0,3
* Operation range obtained with a single nozzle of 1st flame according to norm EN 267.
The operation range is drawn in respect to test conditions and is to be used as guideline for the combined use with boilers.
INSTALLATION
Burners model PNZ can be installed on any high-pressure hearth, although it can also be suitable for depressure hearths
(according to the operation range). PNZ burners run on de-sulphured naphtha types whose viscosity does not exceed
12-15° E at 50° C. Naphtha must be suitably preheated so it can be pulverised and therefore burn well; the pre-heating
tank of the burner (fig. 2) is in charge of this. If the pumpability limit is expected to be reached, and, in particular, in case
of heavy naphtha, it is necessary to provide a circuit for forced supply and, eventually, for added pre-heating (for naphtha
pumpability limits and atomisation viscosity fig. 4).
DIAGRAMS CONTAINING NAPHTHA INFORMATION
12
8
3
VISCOSITY °E
ATOMISATION VISCOSITY
10 0
N.B. Temperature values corresponding to atomisation viscosity are also the calibration values of the maximum thermostat
on the pre-heater tank.
PNZ 30 PNZ 50
10 20 30 40 50
100 200 300 400 500 600
16
NAPHTHA PUMPABILITY LIMIT
50 100
PNZ 75 PNZ 100
60 70 80 90 100
700 800 900 1000 1100 1200 1300 1400 1500 1600
Thermal power
°C
- 26
-
PNZ 130
110 120 130 140 kg/h
kW
FIG. 4
FIG. 3