Electrical Connections; Fuel Supply; General Instructions; Pellet Loading - Ferroli SUN P N Instrucciones De Uso, Instalación Y Mantenimiento

SUN P N

2.3 Electrical connections

The burner is equipped with a multi-pole terminal block for the electrical connections; refer to the wiring diagram in sec-
tion "4 Technical data and characteristics" for the connections. The connections to be made by the installer are all
those indicated by the dashed lines in the wiring diagram (see fig. 17).
The length of the connection cables must allow the burner and, if necessary, the boiler door to be opened. If the burner
power cable is damaged, it must only be replaced by qualified personnel.
The burner must be connected to a single-phase 230 Volt-50 Hz electric line.
B
Have the efficiency and suitability of the earthing system checked by professionally qualified personnel; the
Manufacturer declines any liability for damage caused by failure to earth the system. Also make sure the elec-
trical system is adequate for the maximum power absorbed by the unit, as specified on the boiler data plate.
Make sure to respect the polarities (LINE: brown wire / NEUTRAL: blue wire / GROUND: yellow-green wire)
in the connections to the electric line.

2.4 Fuel supply

General Instructions

The burner must be fed with the type of fuel for which it is arranged, as specified on the unit's dataplate and in the tech-
nical data table on sec. 4.3 of this manual.
The user is advised to use good quality pellets, since low quality pellets result in low heat outputs, high ash content with
subsequent need of frequent cleaning, possible early wear of burner parts exposed to the fire, clogging of the auger and
burner due to excess loose sawdust, and operation shutdowns due to sedimentation of unburnt materials inside the
burner.
To identify quality pellets it is advisable to proceed as follows:
• They must be cylinders of constant diameter and have a smooth and bright surface.
• Check that the labels give the details of the quality certifications
• Check that the packs are intact so that the pellets do not absorb humidity.

Pellet loading

Pellet loading can be activated within 40 minutes after switching on the power to the burner.
Within this time, the system makes available three 5-minute attempts, during which only the auger is activated.
The burner cannot be lit during pellet loading.
Sequence:
1. Switch on the power to the burner.
2. Wait for the pre-ventilation stage to end.
3. Remove burner ignition request.
4. Press and hold down the button
- "R" (detail 5 - fig. 1) flashes, identifying the imminent start of the PELLET loading procedure.
- After two seconds, the auger will be electrically powered and continuously for a maximum time of 5 minutes.
- The PELLET loading procedure can be terminated at any time by pressing and holding down the button
10 - fig. 1) for 3 seconds.
5. If the maximum pellet loading time (5 minutes) is reached, the power to the auger is switched off.
6. Press and hold down the button
- The message "R" will disappear and the display returns to normal operation.
7. If the first attempt was not sufficient, repeat the previous sequence from point 4 to start the second attempt
8. If the second attempt was not sufficient, repeat the previous sequence from point 4 to start the third and last attempt
9. In order to do another 3 attempts, switch the power to the unit off and then on again
10. After the loading of pellets, reinstate the burner ignition request.
EN
(detail 10 - fig. 1) for 3 seconds.
(detail 10 - fig. 1) for 3 seconds.
cod. 3541F710 - Rev. 00 - 05/2017
(detail
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