Unigas PBY70, Manual Of Installation - Use - Maintenance, Page: 12 / 44

C.I.B. UNIGAS - M039241CB
12
Tab. 1 - Supply pipeline hydraulic scheme 3ID0024, pump n.4
Burner adjustments
The table below shows indicative values of temperature and pressure to be set on the burner devices, according to the viscosity of the
heavy oil used. The oil temperature should be set on TR resistor thermostat in order to get about 10 - 40 cSt (2 - 5 °E) viscosity at the
nozzle. The oil temperature must no exceed 160°C.
Tab. 2 - Burner - hydraulic scheme 32ID-01, pump n.2
HEAVY OIL VISCOSITY AT 50 °C
PIPELINE
PRESSURE
PIPELINE
TEMPERATURE
cSt (°E) bar °C
< 50 (7) 1- 2 20
> 50 (7) < 110 (15) 1- 2 50
> 110 (15) < 400 (50) 1- 2 65
> 400 (50) < 4000 (530) 1- 2 100
VISCOSITY
AT 50 °C
OIL PRESSURE
AFTER
BURNER PUMP
(N. 2 in 3I2D-01)
OIL PRESSURE
AFTER OIL
METERING VALVE
(N. 14 IN 3I2D-01)
TEMPERATURE OF
THE PRE-HEATING
RESISTORS
THERMOSTAT TR
TEMPERATURE OF
THE RESISTORS
SAFETY
THERMOSTAT TRS
TEMPERATURE OF
THE PLANT
ENABLING
THERMOSTAT TCI
min max min max min max
°E bar bar °C °C °C
< 50 (7) 5 8 0.5 2 70 95 190 50
> 50 (7) < 110 (15) 5 8 0.5 2 75 105 190 60
> 110 (15) < 400 (50) 5 8 0.5 2 100 140 190 70
> 400 (50) <4000 (530) 5 8 0.5 2 140 160 190 70
ATTENTION: Atomizing air pressure is tipically set at 0.1 ÷ 0.3 bar lower than oil pressure.
ATTENTION: on High flame, set atomising air pressure at 1.8 ÷ 2 bar.