Operation; Function Of The Combustion Air Regulation; Function Of The Convection Air Regulation - Olsberg OEC II Instruction

Operation

Function of the combustion air regulation

When the combustion chamber door opens and closes
again, the electronics receives the signal to start a new
combustion cycle.
→ The combustion air slide valve (primary air and sec-
ondary air) opens up completely.
→ Display = 100 (air regulators open 100%)
If setup to display the combustion air slide valve
position.
The P or M buttons can be used to change between the
following parameters:
● t-1 → Fire chamber temperature → 380 (°C)
● S-1 → Combustion air slide valve position → 100(%)
● It → Current room temperature → 19 (°C)
● St → Desired room temperature → 22 (°C)
● S-2 → Convection air slide valve position → 100(%)
To save energy, an optional standby mode can be ac-
tivated in the display (see chapter „Display in standby
mode on/off with submenu Sut"). Whilst in the standby
mode, the display goes out after about 1 minute when
the combustion air slide valve is between 0 and 100%.
As soon as the combustion air slide valve is complete-
ly closed, the display always immediately goes off
automatically.
Press the P or M button to activate it again.
The starting process can also be initiated by pressing
the R button.
After 15 minutes of burning, the combustion air slide
valve changes to 50% or 40% depending on the fire
chamber temperature that has been reached (<450°C
= 50%; >450°C = 40%).
→ The primary air is then shut off completely, the sec-
ondary air is open completely.
→ Display shows 50 or 40
If setup to display the combustion air slide valve
position.
The portion of secondary air is progressively closed off
up to 20% in further burn-off.
After dropping below 200°C* an acoustic signal sounds
and the temperature in the display flashes as a prompt
to „Replenish fuel".
*(Control curve 2+3 = 280°C, Control curve 1+4+5 =
200°C)
This prompt to replenish the fuel only serves as orien-
tation information. Depending on the fuel or chimney
draught, it is quite possible that it makes sense to add
fuel sooner or later.
When fuel has been added, the control cycle starts
again from the beginning.
If no fuel is added, then the combustion air supply is
completely shut off after approx. 20 minutes.
If a fire chamber temperature of 100°C is not reached
during firing up after 10 minutes, the electronics does
not evaluate the process as combustion cycle and clos-
es the combustion air slide valve again (eg. fire door
opens to glass clean).
If a fire chamber temperature of 200°C is not reached
during the combustion cycle, then the electronics rates
the combustion cycle as an abnormal control proce-
dure. The combustion air slide valve remain 100%
open. Only after dropping below 100°C, will the com-
bustion air slide valve close completely in a closing pro-
cedure without any intermediate steps.
If the combustion chamber door is opened during the
combustion cycle or the R button is pressed, then a
new combustion cycle is started.
→ The combustion air slide valve opens completely
once again and the closing process is recalculated.
The fire chamber temperature serves as a command
variable.

Function of the convection air regulation

When the desired room temperature (St) and the
switching hysteresis (SH) are defined, the slide posi-
tion on the convection air output is automatically set.
Factory setting: St = 20°C, SH = 2°C
When the desired room temperature (St) is reached,
the convection air slide valve is opened to 50%. When
the current room temperature is higher than the switch-
ing hysteresis value, the convection air slide valve is
opened to 100%, and when it is lower, the convection
air slide valve is completely closed.
Important: The desired room temperature (St) is sim-
ply a reference temperature for the po-
sition of the convection air slide valve. It
does not control the room temperature.
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