BCU 370 · Edition 01.19 43
Parameters
4.2.3 UVS check (1× in 24 hours)
Parameter 17
Activates an automatic restart of the burner control unit
after 24 hours operating time.
For flame control using a UV sensor for intermittent op-
eration, parameter P17 = 1 must be set to force a restart
after 24 hours of operation to test the UV sensor.
Parameter 17 = 0: unlimited burner operation
Parameter 17 = 1: an automatic restart is activated
once every 24 hours. The restart begins with pre-purge
(parameter 06, “Pre-purge on each start-up” = 1) or
starting the burner in the Ignition position (parameter
06, “Pre-purge on each start-up” = 0).
The time starts each time the start-up signal (ϑ) is applied.
Since the BCU 370 interrupts burner operation autono-
mously after 24 hours, it is to be verified whether the
process allows for the resulting break in heat supply.
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