GB-4
D
GB
F
NL
I
E
Screwing on the BCU
From inside:
1
Open the cover of the BCU.
Screw on the BCU with four screws, Ø 4 mm,
min. length 15 mm.
Or
To the rear:
▷
The unit remains closed.
1
Attach the BCU with four self-tapping screws.
163 mm
185 mm
7.28"
6.42"
▷
Self-tapping screws (M6 x 20 mm) are supplied
with the unit.
▷
Other mounting options are available as acces-
sories:
Mounting
Order No.
Fastening set
74960422
External securing bars
74960414
Identification
▷
Each burner control unit can be labelled indi-
vidually.
1
Pull out the labelling plate at the top right of the
housing.
8888
Label as required and slide back in.
Replacing the power module/bus
module/parameter chip card
CAUTION
Please observe the following to ensure that the
BCU is not damaged:
–
Different power supply
for the gas
valves. The following combinations of BCU
and LM are allowed:
BCU 4xx..E1 + LM..E1:
power supply via L1,
BCU 4xx..E0 + LM..E1:
power supply via terminal 35,
power supply for air outputs via L1,
BCU 4xx..E0 + LM..E0:
power supply via terminal 35.
1
Disconnect the unit from the electrical power
supply.
Open the cover of the BCU.
3
Remove the connection plug from the power
and bus module.
▷
Power module and bus module are secured in
the BCU by retaining lugs
A
. The retaining lugs
must be pushed away from the respective mod-
ule carefully so that the power or bus module
can be removed.
4
Remove the modules in the following order to
facilitate handling:
1.
power module,
.
bus module,
3.
parameter chip card (PCC).
A
3.
2.
1.
▷
Installation of the modules in reverse order.