GB-16
D
GB
F
NL
I
E
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 pilot burner.
▷
The display runs to
. .0.4.
(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
XX.X
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 first stage of the main
burner.
▷
The display runs to
. .0.8.
.
▷
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.
▷
The display shows
. .A.4.
.
▷
Each time the button is pressed, the air actuator
is closed or opened again.
▷
Press the On/Off button to switch the unit off.
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, V4 or when it reaches
the operating position.
▷
If the Reset/Information button is pressed for 1 s,
the display shows
S. . .4.
(step 4) and the BCU
starts the shut-down procedure.
Assistance in the event of
malfunction
DANGER
To avoid harm to persons and damage to the unit,
please observe the following:
–
Electric shocks can be fatal! Before working
on possible live components, ensure the unit
is disconnected from the power supply.
–
Fault-clearance must only be undertaken by
authorized trained personnel!
▷
Faults may be cleared only using the measures
described below.
▷
If the BCU does not respond even though all
faults have been remedied: remove the unit and
return it to the manufacturer for inspection.
▷
In the event of a fault lock-out, the fault signalling
contact closes, the display blinks and shows
the current program step. The gas valves are
disconnected from the electrical power supply.
After a fault lock-out, the BCU must be reset
manually using the button on the front panel or
the remote reset input (terminal 2).
The BCU cannot be reset by mains failure (non-
volatile fault lock-out). The fault signalling contact
does, however, open as soon as the mains volt-
age fails.
?
Faults
!
Cause
•
Remedy
? The 7-segment display does not light up.
!
Mains voltage is not applied.
•
Check the wiring, apply mains voltage (see type
label).
0 1
E
A 1
E
? The display blinks and indicates
E 01
or
E A1
.
!
The BCU has detected an incorrect flame signal
without the burner having been ignited (extrane-
ous signal).
•
Direct the UV sensor exactly at the burner to be
monitored.
!
The UV tube in the UV sensor is defective (service
life ended) and issues a continuous flame signal.
•
Replace the UV tube, see UV sensor operating
instructions.
!
Flame signal through conductive ceramic insula-
tion.
•
Increase value of parameter A001 in order to
adapt the switch-off threshold of the flame ampli-
fier for burner 1.