Lamborghini Caloreclima EM 12-E Notice D'installation Et D'entretien page 40

OPERATING CYCLE
EM 12-E
EM 18-E
Necessary input signals
Output signals
A Begin start up
B Flame present
B-C Operation
C Control stop
TC-PG Thermostats/Gas pressure switch line
MB Burner motor
PA Air pressure switch
EM 18/2-E
Necessary input signals
Output signals
A Begin start up
B Flame present
B-C Operation
C Control stop
C-D Air shutter closure + post-purge
TC-PG Thermostats/Gas pressure switch line
MB Burner motor
MT Air servo control
UK
PA Air pressure switch
TR Ignition transformer
40
TW Begins with the closure of the thermo-
static line or the PG. The PA must be in the
rest position. This is the waiting and self-test
time.
T10 Begins when the motor starts up and with
the pre-purge phase; it lasts for 3 seconds,
within which the PA air pressure switch must
give the go-ahead.
T1 Pre-purge time, which lasts for at least 30
seconds, ending when the transformer starts
up.
T3 Pre-ignition phase, it ends when the gas
valve opens. It lasts for 3 seconds.
T2 Safety time, within which the flame signal
must reach the EC electrode. It lasts for 3 se-
conds.
TR Ignition transformer
VP Gas valve
EC Control electrode
TW Begins with the closure of the thermo-
static line or the PG. The PA must be in the
rest position. This is the waiting and self-test
time.
T10 Begins when the motor starts up and with
the pre-purge phase; it lasts for 3 seconds,
within which the PA air pressure switch must
give the go-ahead.
T1 Pre-purge time, which lasts for at least 30
seconds, ending when the transformer starts
up.
T3 Pre-ignition phase, it ends when the gas
valve opens. It lasts for 3 seconds.
T2 Safety time, within which the flame signal
must reach the EC electrode. It lasts for 3 se-
conds.
T4 Interval between the opening of the V1
gas valve and the opening of the second sta-
ge V2. It lasts for 8 seconds.
T5 Air shutter closing time and program zero-
setting time.
V1-V2 1st/2nd stage gas valve
EC Control electrode
M