Installation and operating instruction
Oil burner WL5/2-B
3 Product description
83272202 1/2019-04 La
12-76
3.3.4 Program sequence
Pre-purge without actuator
At heat demand, the burner motor starts after the initialisation time (T
I
) has elapsed.
The combustion chamber is pre-purged.
Pre-purge with actuator (optional)
At heat demand, the air damper actuator starts after the initialisation time (T
I
) has
elapsed.
If the actuator limit switch (S2) is closed, the burner motor starts.
The combustion chamber is pre-purged.
Ignition
Ignition starts with the pre-purge time (T
V
).
Fuel release
Following the pre-purge time (T
V
) the solenoid valve (K11) opens and releases the
fuel.
Safety time
With fuel release, safety time (T
S
) and post-ignition time (T
NZ
) start.
The flame signal must be present within the safety time (T
S
).
Operation
The combustion manager monitors the flame signal via the flame sensor.
Post-purge
If there is no longer a heat demand, the solenoid valve (K11) closes and stops the
fuel supply.
Post-purge time (T
N
) begins.
Following the post-purge time (T
N
) the burner motor switches off.
The actuator (optional) drives to Closed position.
