Unigas PN1025, Manual Of Installation - Use - Maintenance

Page: 92 / 99

COD. M12924CA Rel. 0.5 03/2016
Alarms & Warning:
When the red triangle on the top left lights, one or more alarms are activated.
When the red key on the left lights, the output N05-C5 is active and the relay
KTRS
switches the resistors OFF.
Check the reason, correct the failure and, as soon as the temperature is lower than
trS
, reset it through
ALA
/
rES .
In order to show active alarms and warnings, select the relevant menu through
ALA
/
Act
.and, using the
UP
and
DOWN
buttons, scroll the lines.
In order to perform the manual reset, select
ALA
/
rES
.
Code Description Sourse Active simbol Reset type
trS High temperature resistors alarm probe Pb4 > value trS red key Manual
EP1 Probe Pb1 fault Probe Pb1 fault red triangle Automatic
EP2 Probe Pb2 fault Probe Pb2 fault red triangle Automatic
EP3 Probe Pb3 fault Probe Pb3 fault red triangle Automatic
EP4 Probe Pb4 fault Probe Pb4 fault red triangle Automatic
Set point adjustment:
All the parameters inside the
Par
menu are locked by a password. The user can modify only set points, without
using any passwords.
The oil viscosity at the nozzle, should be about 1,5°E, which guarantees correct and safe functioning of the burner.
The temperature values in the table, guarantee the respect of that parameter and are valid when the pre heating
tank is installed on the burner. For different configurations , please refer to the chapter "Recommendations to
design heavy oil feeding plants" on the burner manual
Here below recommended set points:
Menu path
Oil viscosity at 50 °C according to the letter shown in the
burner model
P N E D H
89 cSt < 50 cSt > 50 cSt
< 110 cSt
> 110 cSt
< 400 cSt
> 400 cSt
< 4000 cSt
12 °E < 7°E > 7 °E
< 15 °E
> 15 °E
< 50 °E
> 50 °E
< 530 °E
Par
rEG Pb1 tr Oil heater temperature
probe
parameter not visible
Pb2 tCI Plant consent
temperature probe
(when installed)
20 °C 70 °C 70 °C 70 °C ---
Pb3 Oil oil heater output
temperature probe (PID
regulation);
60-70 °C 110-120 °C 120-130 °C 130-140 °C 140-150 °C
SP0 Set-point oil heater with
oil pump stopped
(stand-by)
45 °C 120 °C 130 °C 140 °C 150 °C
Pb4 tcn Oil heater consent
temperature probe
40 °C 100 °C 100 °C 110 °C 120 °C
trS Safety temperature tank
resistors
(manual reset)
120 °C 190-200 °C 190-200 °C 190-200 °C 190-200 °C
The above temperature values are suggested and refer to a plant designed according to the prescriptions in the
burner user manual.
The suggested values can change in reference to the fuel oil specifications.