Installation and operating instruction
Oil burner WL5-PB-H purflam®
3 Product description
83242002 1/2019-03 La
12-76
3.3.4 Program sequence
Oil preheating
At heat demand and after the initialisation time (T
I
) has elapsed, the heat exchanger
heats the oil in the nozzle assembly (T
H
).
The temperature switch closes at a temperature of approx. 45 °C.
Pre-purge
The pump motor and the fan start. The fan runs at 95 % of the operating speed
(T
Z
). The burner is now in the pre-purge (T
V
) and pre-ignition phase (T
VZ
).
Ignition
The air pressure switch is activated during the pre-purge phase (T
V
).
Ignition starts.
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
).
Ignition is switched of once the post-ignition phase (T
NZ
) has elapsed.
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 phase (T
N
) the fan switches off.
