7
x
Oil burner
FA ROTEX A1 BOe - 02/2014
31
Automatic firing CM165-R1
The oil automatic firing CM165-R1 controlled by a micropro-
cessor controls and monitors the firing programme and the
temperature sensors for the flow and return temperature. It
features the following properties:
– Direct communication with the controller via the internal eBus,
via which all the available information (temperature values,
control signals, fault information) is transmitted. This is evalu-
ated by the controller and displayed on the control section.
– Fulfilling all safety-relevant functions for combustion monitor-
ing and for safety temperature limiting.
– Possibility of carrying out certain parameter adaptions via
BurnerChipCard (BCC).
– Stable programme times, independent of the fluctuations in
the mains voltage or ambient temperature.
– Operating safety, even in the event of power failures. The
automatic firing unit switches off in the event of a power failure
without a fault - signal and on again once the normal voltage
has been resumed.
7.2 Safety function
Fault shutdown and malfunction indicator
A locking fault shutdown takes place if:
– if a flame signal is present during pre-ventilation (remote light
monitoring - fault code 11),
– during the start (fuel release) a flame is not detected after
5 secs (safety time) and 4 additional failed start attempts,
– the flame fails 5x during continuous burner request (fault
code 5),
– the flow temperature reaches the value for safety temperature
limiting (fault code 1),
– the return temperature reaches the value for safety tempera-
ture limiting (fault code 1),
– the oil pre-heater has not switched after 5 mins. (fault
code 15),
– inconsistencies arise when using a BurnerChipCard (BCC).
A temporary fault shutdown occurs if
– the flow temperature exceeds the set maximum boiler tem-
perature by more than 5 K (fault code 6),
– the flow or return temperature sensor does not provide a valid
value (short-circuit, interruption - fault code 12),
– the flow temperature exceeds the return temperature by more
than 35 K (fault code 17),
– the flow temperature rises too rapidly (fault code 19),
– the supply voltage is too low (fault code 32),
– the communication between the automatic firing and the con-
troller is interrupted for longer than 2 mins. (fault code 48).
A fault is displayed:
– by the red backlight in the display,
– by a clear text fault message with the fault code in the display
on the control section.
Unlocking burner
1.
Switching ROTEX A1 BO on.
2.
Push the Exit button (fig. 6-1, pos. 15) for at least 5 secs.
Î
Menu
"Special Level"
is displayed.
3.
Select the
"FA failure"
level with the rotary switch.
Î
Fault code and request "Reset" is displayed.
4.
Select "Yes" with the rotary switch.
5.
Confirm the changes with a brief push of the rotary switch.
Î
Fault is reset.
6.
Cancelling and jump back by pushing the Exit button again.
7.
If there are several successive fault shutdowns, check the
heating system (e.g. flue system, fuel supply).
7.3 Burner setting
7.3.1 Settings
A locking fault can only be reset manually (see
chapter 10.4).
With a temporary fault shutdown the burner is switched
off for at least 60 secs.
When the above conditions are back in the normal
working range, a burner release is carried out automat-
ically.
If more than 5 faults are reset within a 15 minute period,
the fault code 10 is displayed. Another release in then
only possible after 15 mins.
CAUTION!
An inappropriate setting of the oil burner can lead to a
prohibited level of pollutant emissions, heavy contam-
ination and increased oil consumption.
Ɣ
Burner setting should be carried out only by
authorised and recognised heating engineers.
The factory-preset values are printed in bold in
tab. 7-1.
In the "Air throttle" column, the settings can vary from
the specified value depending on the air and flue gas
flow. It is therefore absolutely essential to monitor the
air surplus (Lambda) by measuring CO
2
or O
2
(CO
2
target value = 12.5 - 13.0 %).
O
2
target value = 3.3 - 4.0 %).
