GB-14
D
GB
F
NL
I
E
3
Press the Reset/Information button on the BCU
to confirm the new parameter settings.
Commissioning
▷
During operation, the 7-segment display shows
the program status:
00
Standby
H0
Delay
A
Approaching minimum capacity
A0
Cooling
01
Fan run-up time
A1
Pre-ventilation
A
Approaching maximum capacity
H1
Delay
P0
Pre-purge
P1
Pre-purge
A
Approaching ignition capacity
Valve check
02
Safety time 1 t
SA1
A2
Safety time 1 t
SA1
03
Flame proving period 1 t
FS1
A3
Flame proving period 1 t
FS1
04
Burner 1 operation
A4
Burner 1 operation
05
Burner 2 waiting time
A5
Delay
H5
Delay time during burner 2 waiting time
06
Safety time 2 t
SA2
A6
Safety time 2 t
SA2
07
Flame proving period 2 t
FS2
A7
Flame proving period 2 t
FS2
08
Burner 2 operation
A8
Burner 2 operation
H8
Delay
––
Device Off
Data transfer (programming mode)
0
.
0
.
(blinking dots) Manual mode
XX
Low NO
x
operation in program step XX
XX
High temperature operation in program
step XX
▷
Units with SafetyLink function (BCU with bus
module BCM..S1) may only be commissioned
using BCSoft. Further information can be found
in Technical Information bulletin BCU 46x or
BCU 480.
WARNING
Risk of explosion! Check the system for tightness
before commissioning.
Do not start the BCU until the parameter settings
and wiring are correct and the faultless processing
of all input and output signals complies with the
local standards.
1
Switch on the system.
▷
The display shows
––
.
Switch on the BCU by pressing the On/Off but-
ton.
▷
The display shows
00
.
▷
The display blinks and indicates
E
XXX
. A reset-
table fault message is signalled. Reset the BCU
by pressing the Reset/Information button.
▷
The display blinks without indicating “
E
”. A warn-
ing message is signalled. Once the fault has been
eliminated, the display stops blinking and the
BCU continues the program run.
BCU 460..F0
3
Apply the start-up signal to terminal 1.
▷
The display shows
01
.
▷
The display shows
02
. The gas valves open and
the burner ignites. Safety time 1 starts to elapse.
▷
The display indicates
03
during flame proving
period 1.
▷
The display shows
04
. The burner is in opera-
tion.
BCU 46x..F1, BCU 46x..F3
▷
If the air actuator is activated externally for cool-
ing in the start-up position, the display indicates
A0
.
3
Apply the start-up signal to terminal 1.
▷
The display indicates
01
or
A1
if the air actua-
tor has been activated.
▷
The display indicates
02
or
A2
if the air actua-
tor has been opened. The gas valves open and
the burner ignites. Safety time 1 starts to elapse.
▷
The display indicates
03
during flame prov-
ing period 1 or
A3
if the air actuator has been
opened.
▷
The display indicates
04
or
A4
if the air actua-
tor has been opened. The burner is in operation.
BCU 480..F1/F3
▷
If the air actuator is activated externally for cool-
ing in the start-up position, the display indicates
A0
.
3
Apply the start-up signal to terminal 1.
▷
The display indicates
01
or
A1
if the air actua-
tor has been opened.
▷
The display indicates
02
or
A2
if the air actua-
tor has been opened. The gas valves open, the
pilot burner (burner 1) ignites and safety time 1
starts to elapse.
▷
The display indicates
03
during flame prov-
ing period 1 or
A3
if the air actuator has been
opened.