BCU 370 · Edition 01.19 50
Parameters
4.4.6 V2 during burner operation
Parameter 27
Determines whether valve V2 is switched off 1 s before
the end of the second safety time t
SA2
.
On systems with pilot burners, the pilot burner can be
switched off once the main burner is operational.
Parameter 27 = 0: valve V2 is switched off 1 s before the
end of the second safety time t
SA2
. (If t
SA2
is set to 0,
this occurs at the end of the first flame proving period
t
FS1
or at the end of the first safety time t
SA1
if t
FS1
= 0).
This setting is required for pilot/main burner systems
where the pilot burner does not ignite the main burner
safely in each operating status.
Parameter 27 = 1: valve V2 remains open during the en-
tire burner operation. This setting is valid for directly ig-
nited burners (t
SA2
= 0) and pilot/main burner systems
with permanent pilot burner.
To Next Page
Loading...
