2684
9
GB
4.8 BURNER START-UP CYCLE
Lock out is indicated by a lamp on the control box (3, fig. 1, page 1).
4.9 ADJUSTMENTS, TO AVOID FLAME - DETACHMENT, AT BURNER - IGNITION
This inconvenience can occur, when the temperature of the gas-oil decreases below + 5 °C.
1) CORRECT POSITIONING OF THE ELECTRODES,
(see fig. 11, page 7).
2) PUMP - SETTING
The pump is factory set, at a pressure of 12 bar.
When the temperature of the gas-oil decreases below + 5 °C, increase the pressure to 14 bar.
3) COMBUSTION-HEAD
SETTING
Regulate the combustion-head one set-point further ahead than indicated in the instructions.
Example: the instructions require to set the combustion-head on set-point 3.
Instead, the setting is made on set-point 4.
4) FAN - AIR DAMPER ADJUSTMENT
Adjust the air damper of the fan, such as to obtain a smoke-number not inferior to 1.
(i.e. a combustion with the lowest possible excess-air).
5.
MAINTENANCE
Burner requires a periodic maintenance carried out by a qualified and authorized technicians.
Maintenance is essential for the reliability of the burner, avoiding the excessive consumption of fuel and
consequent pollution.
Before carrying out any cleaning or control always first switch off the electrical supply to the
burner acting on the main switch of the system.
THE BASIC CHECKS ARE:
➤
Check that there are not obstructions or dents in the supply or return oil pipes.
➤
Clean the filter in the oil suction line and in the pump.
➤
Clean the photoresistance, (see fig. 9, page 5).
➤
Check for correct fuel consumption.
➤
Replace the nozzle (see fig. 10, page 7) and check the correct position of electrodes (fig. 11, page 7).
➤
Clean the combustion head in the fuel exit area, on the diffuser disc.
➤
Leave the burner working without interruptions for 10 min. and set rightly all the components stated in this
manual. Then carry out a combustion check verifying:
●
Smoke temperature at the chimney;
●
Content of CO
2
( % );
●
Content of CO (ppm);
●
Smoke value according to opacity smokes index according to Bacharach scale.
Lock-out due to failure to light
C
Normal
D5029
~
12s
Thermostat
Green led and motor
Ignition transformer
Oil valve
Flame
Lock-out lamp
~
12s
5 s
C
