Morco FEB-24ED - Page 51

Description of functioning
technical
55
FROM START
SEQUENCE
Yes
Yes
No
No
GAS VALVE CLOSED
SPARK OFF
LOCK OUT
F-1
HEATING OR DHW
MODULATION
Flame detection before
6 secon
ds?
Open EV1 and EV2
Open gas valve at
lighting pressure
SPARK Maximun 6
seconds.
FAN 5 SEC ON
PU
MP ON
GAS VALVE CLOSED
SPARK OFF
Flame detection before
6 secon
ds?
FA
N 5 SEC.ON
PUMP ON
Open EV1 and EV2
Open gas valve at
lighting pressure
SPARK Maximun 6
seconds.
HEATING OR DHW
MODULATION
BURNER OFF
FAN 7 SEC.ON
PUMP OFF
RE-start sequence FEB-24ED
49