Function
EBCU GAS control and safety unit
R
Reset button + lock-out led.
RJ45 Connector for PC interface
(diagnostic, separate item).
KIT E-BCU
DIAGNOSTIC TOOL
(not supplied)
LINE
C
1
2
-
-
420010492303
The E-BCU GAS fuel gas control and
safety unit controls and monitors the
forced draught burner.
The microprocessor-controlled program
sequence ensures maximum stability of
time periods, regardless of fluctuations in
the power supply or ambient temperature.
The design of the automatic combustion
control unit protects it from the effects of
R
brownouts. Whenever the supply voltage
drops below its rated minimum level (170
V), the control unit shuts down - even in
the absence of a malfunction signal. The
control unit switches itself back on again
once the voltage has exceeded the 178 V.
RJ45
Symbol
3
4
4'
25s
Max 5s
33s
Designation
Waiting for heat request
Fuel valve
Waiting for air pressure switch during burner start
24s
Burner motor on
Ignition transformer on
Flame present
5
6
3s
5s
Locking and unlocking the system
The control unit can be locked (switched
to malfunction) and unlocked (malfunction
cleared) by pressing the R reset button,
provided the system is connected to the
mains power supply.
Always disconnect the
power supply before installing
or removing the control unit
DANGER
Do not attempt to open or carry
out repairs on the control unit.
7
8
9
-
< 1s
-
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EN
9