Fig. 31 Operation Of Fuel Shortage Detection - Jøtul ERS 01 Operation And Maintenance Manual

ENGLISH
12.2 Fuel shortage detection
The regulator is equipped with a fuel shortage detection
function. This function can be active only in automatic
operation mode.
Principal of operation of fuel detection is the following: when
as a result of burning, the temperature drops in relation to a
preset temperature by value of dT fuel shortage parameter, the
regulator will enable a differentiate algorithm and will test the
furnace temperature dropping rate. If the temperature dropping
rate is higher than No fuel det. min but lower than No fuel det.
max, the regulator will report "No fuel" message and confirm
it by three short sound signals. Next message will be reported
after the Fuel prompt time elapses (if the aforementioned
conditions are met again).
The following parameters are used to operate functions:
No fuel detect - switches the fuel shortage detection function
on or off. Switching the function off will cause that messages
and sound signals of fuel shortage will not be reported.
dT no fuel - Tz-Tc temperatures difference, from which the
regulator will detect fuel shortage.
No fuel alert - time interval for displaying fuel shortage
messages.
No fuel thr. min. - minimum exhaust gases temperature
dropping rate at which the regulator will report fuel shortage,
provided that other conditions are met (e.g.: throttle opening
or temperature difference). Value 2 represents the lowest
dropping rate, higher values represent higher exhaustion gases
temperature dropping rate;
No fuel thr. max - maximum exhaust gases temperature
dropping rate over which the regulator will not detect fuel
shortage. Higher values represent higher temperature dropping
rate.
P% min auto II –automatic mode stage II activated - the throttle
positions on the fireplace temperature fall to the value of
Toperation.
dT auto II –automatic mode stage II activated - the difference of
temperature in time t auto II switches the flame controller back
to phase I on reaching the set temperature.
t auto II –automatic mode stage II activated - the time of
temperature increase detection dT auto II.
When the fireplace door is opened (e.g.: in order to add fuel), the
temperature of exhaust gases will begin to decrease rapidly. If
during door opening the regulator reports fuel shortage messages,
No fuel det. max. parameter should be slightly increased.
If the "Fuel shortage" message is reported too often, the Fuel
prompt time should be extended.
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Fig. 31 Operation of fuel shortage detection

Fig. 32 Temperature decrease rate setting
12.3 Fireplaces
In this menu the user selects the model of the fireplace
cooperating with the flame controller. The device contains
16 separate pieces of software intended for Jøtul and Scan
fireplaces and fireplace inserts as well as a general piece of
software „Uni 270" for any fireplace with an external air inlet.
Each and every time the fireplace model is selected from the list
and confirmed with OK, the individual parameters of the selected
fireplace are loaded.
12.4 Throttle calibration
In order to calibrate the throttle, a visual access to its interior is
required. When the throttle is built over, the calibration process
will be impossible to perform.
The throttle calibration process can be performed outside the
fireplace by connecting it directly to the regulator.
Calibration applies to the throttle + regulator couple; if any of
these is replaced or repaired, re-calibrate.
After installation of the fireplace and regulator, calibrate the
throttle. It consists in adjusting the throttle to the regulator
manually.