Joannes G50/2 oil, Инструкция по эксплуатации и обслуживанию

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C)
Within the safety time, the photoresistor has to send the signal of “present” flame to the unit; the transformer is
always working originating the phase of : post-ignition. After the post-ignition time, the transformer is disconnected
and the starting cycle ends.
C
1
)
After a certain time from the opening of the opening position corresponding to the total capacity, it controls the
opening of the VE2; the light oil reaches the nozzle G2 where it is ignited by the flame existing on the G1. The
intervention of the flame modulation thermostat will determine the high/low flame operation.
C)
If there is no flame signal within safety time, the device interrupts the current to the motor, to the valve VE1 and to
the transformer and moves on the position of block or safety, warning by the proper lamp. The release of the device
possible after 2 seconds from the stop by LOA44.
FOLLOW – STARTING
UNIT CYCLE
A - start
B - flame presence
C - end of start
C-D - ordinary operation
D - adjustment stop (TA-TC)
T1 pre-ventilations time 25 seconds
T2 safety time 5 seconds
T3 pre-ignition time 25 seconds
T3n post-ignition time 2 seconds
Ambient-boiler thermostat
Motor
Trasformer
Electromagnetic valve 1
st
flame
Modulation thermostat
Air servo control
Electromagnetic valve 2
nd
flame
Photoresistor
pag. 72