BCU 580 · Edition 11.15l 73
Parameters
10.4.2 Minimum operating time t
B
Parameter 61
A minimum operating time (0 to 250 s) may be defined
to ensure that the heating equipment operates stably.
If the minimum operating time is active, burner opera-
tion will be maintained until the set time has elapsed
even if the start-up signal fails.
The minimum operating time starts as soon as the pro-
gram step for operation/controller enable (display 08)
has been reached.
If the start-up signal drops out before the start of op-
eration/controller enable, e.g. during pre-purge, the
burner control unit reverts directly to the start-up posi-
tion (standby) and the burner is not ignited.
The minimum operating time can be cancelled by
switching off the BCU or if a safety shut-down occurs.
10.4.3 Pilot burner
Parameter 79
t
SA1
04 06 07 0802 0300
t
t
FS1
t
SA2
t
FS2
13
V1
14
V2
15
V3
57
V4
ϑ1
ϑ2
4
88
1
9
P79 = 1
If a burner with a pilot burner is used, this parameter
can be used to define whether the pilot burner is shut
down 1 second before the end of the second safety
time t
SA2
or operates continuously.
Parameter 79 = 0: with shut-down.
Parameter 79 = 1: in continuous operation.
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