Krom Schroder BCU 46 Series, Руководство по эксплуатации, Страница: 15 / 34

GB-15
D
GB
F
NL
I
E
▷
The display indicates
04
or
A4
if the air ac-
tuator has been opened. The pilot burner is in
operation.
▷
The display indicates
06
or
A6
if the air actua-
tor has been opened. The main burner (burner 2)
ignites and safety time 2 starts to elapse.
▷
The display indicates 07 during flame prov-
ing period 2 or
A7
if the air actuator has been
opened.
▷
The display indicates
08
or
A8
if the air ac-
tuator has been opened. The main burner is
in operation. The controller enable signal has
been issued.
Manual mode
▷
For adjustment of the burner control unit or for
fault-finding.
▷
In Manual mode, the BCU operates indepen-
dently of the status of the inputs for start-up
signal (terminal 1), external air valve control
(terminal 4) and remote reset (terminal 2). The
function of the controller enable/emergency stop
input (terminal 35) is retained.
▷
Manual mode is terminated by switching off the
BCU or in the event of a power failure.
▷
Parameter A067 = 0: Manual mode unlimited
in time.
▷
Parameter A067 = 1: the BCU will terminate
Manual mode 5 minutes after the last time the
Reset/Information button is pressed. It switches
to the start-up position/standby (display
00
).
1 Switch on the BCU while holding the Reset/
Information button. Hold the Reset/Information
button until 4 dots start to flash in the display.
. . . .
▷
If the Reset/Information button is pressed briefly,
the current step in Manual mode is shown and
S. X.X.X. is displayed.
▷
If the Reset/Information button is pressed for
> 1 s, the BCU proceeds to the next program
step.
. . . .S X
BCU 460/LM..F0

Press the Reset/Information button for 1 s.
▷
The display shows S. . .2. (step 2).
▷
The BCU will start the first stage of the burner.
▷
The display runs to . .0.2. or . .0.3. .
▷
After 3 seconds in this position, the μA value for
the flame signal XX.X is displayed instead of the
program status.
3 Press the Reset/Information button for 1 s.
▷
The display shows S. . .3. (step 3).
▷
The BCU will start the second stage of the burner.
▷
The display runs to . .0.4. .
▷
After 3 seconds in this position, the μA value
for the flame signal is displayed instead of the
program status.
BCU 46x/LM..F1/F3

Press the Reset/Information button for 1 s.
▷
The display shows S. . .1. (step 1).
▷
The BCU will start to purge the burner.
▷
The display shows . .P.0. .
WARNING
Risk of explosion! The pre-purge time is not includ-
ed in the program. Maintain state
P.0.
until the com-
bustion chamber has been adequately ventilated.
3 Press the Reset/Information button for 1 s.
▷
The display shows S. . .2 (step 2).
▷
The BCU will start the first stage of the burner.
▷
The display runs to . .0.2. or . .0.3. (an A rather
than a
0
appears if the air actuator is activated).
▷
After 3 seconds in this position, the μA value
for the flame signal is displayed instead of the
program status.
4 Press the Reset/Information button for 1 s.
▷
The display shows S. . .3. (step 3).
▷
The BCU will start the second stage of the burner.
▷
The display runs to . .0.4. ( . .A.4. ).
▷
After 3 seconds in this position, the μA value for
the flame signal XX.X is displayed instead of the
program status.
Air actuator control:
The air actuator is activated externally
(parameter A048 = 0).
5
Press the Reset/Information button for 1 s.
▷
The display shows S . .4 (step 4).
▷
The BCU will open the air actuator.
▷
Each time the button is pressed, the air actuator
is closed or opened again.
The air actuator opens under program control
(parameter 48 = 1, , 3, 4, 5 or 6).
▷
The air actuator opens under program control
with valves V1, V2, V3 or when it reaches the
operating position.
5
Press the Reset/Information button for 1 s.
▷
The display shows S. . .4 (step 4).
▷
The BCU will start the shut-down procedure.
BCU 480

Press the Reset/Information button for 1 s.
▷
The display shows S. . .1. (step 1).
▷
The BCU will start to purge the burner.
▷
The display shows . .P.0. .