Kromschroeder IFD 244 User manual

CONTENTS
Cert. Version 02.18 · Edition 06.23 · EN · 03250729
DE, EN, FR, NL, IT, ES, DA, SV, NO, PT, EL, TR, CS, PL, RU, HU – www.docuthek.com
Automatic burner control unit IFD244, IFD258
1 Safety ................................1
2 Checking the usage .....................2
3 Installation ............................2
4 Replacing the automatic burner control unit IFS 3
5 Cable selection.........................4
6 Cable installation .......................4
7 Wiring ................................4
8 Commissioning ........................6
9 Checking the function ...................7
10 System maintenance instructions ..........7
11 Assistance in the event of malfunction ...... 7
12 Reading off the flame signal and the
parameters ............................10
13 Technical data .......................11
14 Logistics ............................12
15 Certification .........................12
16 Disposal ............................12
1 SAFETY
1.1 Please read and keep in a safe place
Please read through these instructions
carefully before installing or operating. Following the
installation, pass the instructions on to the operator.
This unit must be installed and commissioned in
accordance with the regulations and standards in
force. These instructions can also be found at www.
docuthek.com.
1.2 Explanation of symbols
1, 2, 3, a, b, c = Action
➔= Instruction
1.3 Liability
We will not be held liable for damage resulting from
non-observance of the instructions and non-com-
pliant use.
1.4 Safety instructions
Information that is relevant for safety is indicated in
the instructions as follows:
DANGER
Indicates potentially fatal situations.
WARNING
Indicates possible danger to life and limb.
CAUTION
Indicates possible material damage.
All interventions may only be carried out by qualified
gas technicians. Electrical interventions may only be
carried out by qualified electricians.
1.5 Conversion, spare parts
All technical changes are prohibited. Only use OEM
spare parts.
OPERATING INSTRUCTIONS

IFD244, IFD258 · Edition 06.23
EN-2
2 CHECKING THE USAGE
IFD244/IFD258
For atmospheric burners or forced draught burners
used in multiple burner applications, where a central
control system is used for pre-purge and for mon-
itoring the limits. For direct ignition and monitoring
of gas burners in continuous operation. Suitable for
intermittent operation thanks to its fast reaction to
different process requirements. 2-digit 7-segment
display for indicating program status and flame
signal intensity.
IFD..I
With integrated ignition.
WARNING
– The user must ensure that the high-voltage
output (IFD..I) is protected against accidental
contact.
– The IFD..I may not be used for domestic,
commercial and trade, or small firm application
due to emitted electromagnetic interference.
IFD244
Gas burner monitoring with a flame rod. For ground-
ed mains. With restart after a flame failure.
IFD258
Gas burner monitoring with a flame rod or a UV
sensor.
In the case of UV control with UV sensors of Type
UVS, the IFD may be used for intermittent operation
only. This means that operation must be interrupted
once within 24hours.
Ionization control is possible in both grounded and
ungrounded systems.
Ignition and monitoring with a single electrode is
possible (single-electrode operation).
The cut-off point can be set using a potentiometer.
The behaviour in the event of flame failure during
operation can be selected using a switch. Either
an immediate fault lock-out or an automatic restart
occurs.
➔Mains voltage, ambient temperature, safety
time, enclosure, and with IFD..I also the ignition
voltage (peak-peak) and ignition current– see
type label.
IFD
CE-0063BXXXXX
230 VAC
50/60 Hz
-20/+60 °C
-4/+140 °F
ts 5/1s
IP 54/NEMA 3
➔No condensation permitted on the PC boards
(enclosure IP54).
➔Length of sensor cable:
ionization control: max. 75m,
UV control: max. 100m.
➔In the event of an automatic restart, the program
sequence started must match the application
and the burner must be able to restart as intend-
ed in all operating phases.
2.1 Type code
IFD Automatic burner control unit for contin-
uous operation
2Series 200
4Ionization control
5Ionization or UV control
4Restart in the event of flame failure
8Immediate fault lock-out or restart,
switchable
-3 Safety time on start-up: 3s
-5 Safety time on start-up: 5s
-10 Safety time on start-up: 10s
/1 Safety time during operation: 1s
WMains voltage: 230V AC, 50/60Hz
QMains voltage: 120V AC, 50/60Hz
YMains voltage: 200V AC, 50/60Hz
PMains voltage: 100V AC, 50/60Hz
IIntegrated electronic ignition

2.2 Part designations
2
6
3
1
4
5
1 LED display for program status and fault mes-
sages
2 On/Off button
3 Reset/Information button
4 Lower housing section
5 Upper housing section
6 Knock-out hole for M16 cable gland
3 INSTALLATION
CAUTION
– Dropping the device can cause permanent
damage. In this event, replace the entire device
and associated modules before use.
➔Installation position as required.
➔Eight knock-out holes are pre-prepared for
wiring, M16 plastic cable gland for 8 to 10mm
cable diameter.

IFD244, IFD258 · Edition 06.23
EN-3
1 2 3
M16
4
70 mm
37,5
mm
21 mm
∅
5 mm
4 REPLACING THE AUTOMATIC
BURNER CONTROL UNIT IFS
CAUTION
– Dropping the device can cause permanent
damage. In this event, replace the entire device
and associated modules before use.
➔Installation position as required.
➔The housing dimensions and the hole pattern
have not changed.
➔The new upper section of the housing will fit on
the existing lower section.
➔The electrical connection is unchanged.
➔Replacement possibilities:
Old unit New unit
IFS 244 IFD244
IFS 258 IFD258
CAUTION
– Only use the specified variants, when replacing
the automatic burner control units IFS244 or
IFS258.
Changes in comparison with the IFS:
➔The IFD has a 7-segment display for indicating
flame signal intensity, operating state and flame
simulation.
➔With the IFD, the fault signal occurs when mains
voltage is supplied.
➔The IFD is additionally equipped with the follow-
ing protection functions:
➔against over-frequent switching off during the
safety time on start-up, against over-frequent
remote resets and against over-frequent cycling.
The cycle lock is dependent on the safety time
on start-up and the ignition device.
tSA
[s] tZ[s] Type of
ignition
Cycle lock [s]
3 1.8 TZI 10
5 3 TZI 12
10 6 TZI 15
3 1.8 IFD..I 36
5 3 IFD..I 60
10 6 IFD..I 120
➔In the event of a short-circuit on the valve output,
return the unit to the manufacturer.
➔Max. number of operating cycles: 250,000.
➔Mains voltage: IFD244: 120, 230V.
IFD258: 100, 120, 200, 230V.
1
IFS
2
IFS
3
IFD
4

IFD244, IFD258 · Edition 06.23
EN-4
5 CABLE SELECTION
➔Use mains cable suitable for the type of opera-
tion and complying with local regulations.
➔Signal and control line: max. 2.5mm2.
➔Cable for burner ground/PE wire: 4mm2.
➔For the ionization and ignition cables, use un-
screened high-voltage cable:
FZLSi 1/7 up to 180°C, Order No. 04250410,
or
FZLK 1/7 up to 80°C, Order No. 04250409.
A = Ionization cable
➔Max. 75m.
A
I
Z
5
A
I
Z
4
IFD 244 IFD 258
45
B = Ignition cable
➔Max. 5m, recommended 1m.
➔IFD..I: max. 1m, recommended 0.7m.
B
I
Z
IFD258
C = UV cable
➔Max. 100m.
CµA
5
UVS 1
2
3
6 74
6 CABLE INSTALLATION
Reduction of EMC
➔External electrical interference must be avoided.
➔Lay cables individually and, if possible, not in a
metal conduit.
➔Do not lay UV/ionization cable and ignition cable
together and lay them as far apart as possible.
➔Screw the ignition cable securely into the ignition
device and run to the burner by the shortest
possible route.
➔Only use radio interference suppressed spark
plugs with a resistance of 1kΩ.
7 WIRING
Legend
Safety interlocks (limits)
Start-up signal
Ignition transformer
Gas valve
Fault signal
Operating signal
Reset
Safety circuit
1 Disconnect the system from the electrical power
supply.
➔Use the pre-prepared knock-out holes for wiring.
2 Use M16 or PG11 plastic cable gland for 5 to
10mm cable diameter.
CAUTION
– Make a good PE (ground) wire connection to
the automatic burner control unit and burner,
otherwise the appliance may be damaged when
used in single-electrode operation.
WARNING
– Ensure that voltage outputs and inputs have the
same polarity and are not reversed.
– Connection only with permanent wiring.
– Do not reverse L1, N and PE.
– Do not set the reset function so that it operates
automatically in cycles.
3 Wire the automatic burner control unit as shown
in the connection diagram.
Connection diagrams
➔The operation and fault signalling contacts do
not meet the requirements for safety extra-low
voltage (SELV/PELV).
A= Ionization control
B= Single-electrode operation
C= UV control
IFD244/IFD244..I
➔Fault signalling contact (terminals 7/8): max. 2A,
253V, not fused internally.
A
L1
N
PE
12 3 4 5 6 7 8 9
I
Z
IFD 244
ϑ
max. 2 A,
253 V~
F1

IFD244, IFD258 · Edition 06.23
EN-5
A
L1
N
PE
12 3 4 5 6 7 8 9 10 11 12 13 14
ϑ
max. 2 A,
253 V~
I
Z
IFD 244..I
F1
IFD258
➔Use the Elster Kromschröder ignition transformer
TZI/TGI in single-electrode operation B. Connect
burner ground to the IFD via terminal7, other-
wise the IFD will be damaged.
➔Use the Elster Kromschröder UV sensor UVS for
UV control C.
WARNING
– For UV control, the IFD258 must be perma-
nently supplied with voltage. Do not switch on
the IFD power supply synchronously with the
heat demandϑ.
➔Operation signalling contact (terminals 13/14)
and fault signalling contact (terminals 8/9):
max.2A, 253V, not fused internally.
➔Terminals 11 and 12 are connected internally.
I
Z
A
L1 (L1)
N (L2)
PE
12 3 4 5 6 7 8 9 10 11 12 13 14
IFD 258
ϑ
max. 2 A,
253 V~
max. 2 A,
253 V~
F1
B
L1 (L1)
N (L2)
PE
12 3 4 5 6 7 8 9 10 11 12 13 14
IFD 258
ϑ
max. 2 A,
253 V~
max. 2 A,
253 V~
Z
F1
C
L1 (L1)
N (L2)
PE
12 3 4 5 6 7 8 9 10 11 12 13 14
IFD 258
Z
1
2
3
UVS
ϑ
max. 2 A,
253 V~
max. 2 A,
253 V~
F1
IFD258..I
➔Single-electrode operation is not possible.
➔Use the Elster Kromschröder UV sensor UVS for
UV control C.
WARNING
– For UV control, the IFD258 must be perma-
nently supplied with voltage. Do not switch on
the IFD power supply synchronously with the
heat demandϑ.
➔Operation signalling contact (terminals 13/14)
and fault signalling contact (terminals 8/9):
max.2A, 253V, not fused internally.
A
12 3 4 5 6 7 8 9 10 11 12 13 14
IFD 258..I
L1 (L1)
N (L2)
PE
ϑ
max. 2 A,
253 V~
max. 2 A,
253 V~
I
Z
F1
C
12 3 4 5 6 7 8 9 10 11 12 13 14
IFD 258..I
L1 (L1)
N (L2)
PE
Z
1
2
3
UVS
ϑ
max. 2 A,
253 V~
max. 2 A,
253 V~
F1

IFD244, IFD258 · Edition 06.23
EN-6
IFD244..I, IFD258..I
➔Screw the ignition cable securely approx. 5cm
into the IFD..I onto a screw.
a b c
5
c
m
d e
4 Replace the upper section and tighten.
8 COMMISSIONING
➔During operation, the 7-segment display shows
the program status:
00 Start-up position
01 Waiting time
02 Safety time on start-up
04 Operation
DANGER
– Check the system for tightness before
commissioning.
1 Close the manual valve!
2 Switch on the system.
3 Apply voltage to terminal 1.
4 Check the electrical installation.
5 Switch on the IFD.
➔The display indicates 00.
0 00 0
➔The IFD retains its switch position when the
voltage is removed from terminal1.
6 Start the program for the burner: apply voltage
to terminal 3 – the display indicates 01.
0 1
WARNING
– The unit is defective if it opens a gas valve
during the waiting time (display01). Remove the
unit and return it to the manufacturer.
➔ ϑ signal minimum ON time (terminal3):
IFD..-3: 8s
IFD..-5: 10s
IFD..-10: 15s
The times must be at least this long, otherwise
the automatic burner control unit cannot monitor
the burner.
➔Gas valve V1 opens, the burner ignites and the
display indicates02.
0 2
➔Ignition time tZ:
IFD..-3: 2s
IFD..-5: 3s
IFD..-10: 6s
➔After the safety time tSA (3, 5 or 10s) has
elapsed, the IFD signals a fault. The display
indicates a blinking 02.
0 2
7 Open the gas cock.
8 Reset the IFD by pressing the Reset/Information
button.
9 Start the program for the burner: apply voltage
to terminal 3.
➔The display indicates 02, the gas valve V1 opens
and the burner ignites.
0 2
➔After the safety time tSA (3, 5 or 10s) has
elapsed, the display indicates 04.
0 4
➔IFD258: the contact between terminals 13 and
14 closes.
➔The burner is in operation.
Adjustment
IFD258:
1 Undo the screws and remove the upper section.
Behaviour in the event of flame failure
2 Set the switch to the desired position (Immediate
fault lock-out or Restart ).
L1, L2 = Live
N = Neutral PE = Ground
1x
Single-electrode operation:
see operating instructions
L1 (L1)
N (L2)
PE
N
➔At the factory, the IFD258 is set to Immediate
fault lock-out.
➔Restart is recommended for burners which
occasionally display unstable flame behaviour.
Do not use with slow-closing air control valves
or continuous control, if the burner must not be
ignited at max. capacity, for burners with an out-
put of over 120kW in accordance with EN676.

IFD244, IFD258 · Edition 06.23
EN-7
Cut-off sensitivity
➔The cut-off point can be adjusted between 2 and
20μA (set at the factory to 2μA).
➔In the case of UV control with a UV sensor UVS,
the switch-off threshold must be set to ≥5μA.
3 Increase the set value using the potentiometer,
when the display blinks and indicates 01 before
ignition.
220
µA (DC)
T3,15A H
4 Screw the upper section back on.
9 CHECKING THE FUNCTION
1 During operation with two electrodes or UV
control, disconnect the spark plug from the
flame rod or black out the UV sensor.
IFD258: in single-electrode operation, close the
manual valve.
UV
I
WARNING
Danger of death!
– If the IFD258 is used in single-electrode
operation, high voltage is supplied to the spark
plug upon restart.
IFD 258
➔IFD244: the IFD244 generates a restart and
subsequently a fault lock-out.
IFD258: if the switch is set to Restart, the
IFD258 first restarts, and then performs a fault
lock-out.
A fault lock-out involves disconnecting the
power from the gas valves. The fault signalling
contact between the terminals (IFD258: 8and 9,
IFD244: 7and 8) closes. The display blinks and
displays the current program status.
➔The flame must go out.
➔If the flame does not go out, there is a fault.
2 Check the wiring – see page 4 (7 Wiring).
WARNING
– The fault must be remedied before the system
may be operated without supervision.
10 SYSTEM MAINTENANCE IN-
STRUCTIONS
➔The On/Off button on the IFD separates the IFD
functionally from the mains. It does not fulfil the
requirements for a device to disconnect the
electrical equipment.
➔For maintenance work on the system, isolate the
electrical equipment from the voltage supply and
lock it to prevent it being switched on again.
11 ASSISTANCE IN THE EVENT OF
MALFUNCTION
WARNING
Electric shocks can be fatal!
– Before working on possible live components,
ensure the unit is disconnected from the power
supply.
– Fault-clearance must only be undertaken by
authorized trained personnel!
– Do not carry out repairs on the IFD on your own
as this will cancel our guarantee! Unauthorized
repairs or incorrect electrical connections, e.g.
the connection of power to outputs, can cause
the gas valve to open and the IFD to become
defective. In this case, fail-safe operation can no
longer be guaranteed.
– (Remote) resets may only be conducted by
authorized trained personnel with continuous
monitoring of the burner to be reset.
➔If the system suffers a fault, the automatic burner
control unit will close the gas valves, the display
will blink and show the current program status.
• Faults may be cleared only using the meas-
ures described below–
• Reset and the IFD will restart –
➔The IFD can only be reset when the display is
blinking, not when the flame signal or a param-
eter is being displayed. In this case press the
Reset/Information button until the display starts
to blink or switch the unit off and on again. The
IFD can now be reset.
➔If the IFD does not react despite the faults having
been rectified–
• Remove the unit and return it to the manufac-
turer for inspection.
Assistance in the event of malfunction
? Fault
! Cause
• Remedy
0 1

IFD244, IFD258 · Edition 06.23
EN-8
? The display blinks and indicates 01?
! The IFD has detected an incorrect flame signal
without the burner having been ignited (extrane-
ous signal)–
! Flame signal through ceramic insulation–
IFD258:
! The UV tube in the UV sensor UVS is defective
(service life ended) and permanently indicates an
extraneous signal.
• Exchange UV tube, Order No.: 04065304 –
note the Operating instructions for UV sensor
UVS.
• Increase value of parameter 04 in order to
adapt the switch-off threshold of the flame
amplifier.
0 2
? Start-up – no gas supply – the display blinks
and indicates 02?
! The gas valve does not open –
• Check voltage supply to the gas valve.
➔After a short-circuit on the valve output, the
internal fuse in the unit tripped. The fuse cannot
be replaced. Return the unit to the manufacturer
for inspection.
! There is still air in the pipeline, for example after
installation work or if the system has not been
used for a long period–
• “Purge” the pipeline and reset the system
several times.
? Start-up – flame burning – nevertheless, the
display blinks and indicates 02?
! Flame failure on start-up.
• Read off the flame signal (parameter 01) – see
page 10 (12 Reading off the flame signal
and the parameters).
If the flame signal is lower than the switch-off
threshold (parameter 04), this may be attribut-
able to the following causes:
! Short-circuit on the flame rod as the result of
soot, dirt or moisture on the insulator–
! Flame rod not correctly positioned at the flame
edge–
! Gas/air ratio incorrect –
! Flame not contacting burner ground as the result
of excessively high gas or air pressure–
! Burner or IFD not (adequately) grounded –
! Short-circuit or discontinuity on the flame signal
cable–
IFD244:
! Phase (L1) and neutral conductor (N) reversed –
• Connect L1 to terminal 1 and N to terminal 2.
IFD258:
! The set value for the cut-off sensitivity is too
high–
! Soiled UV sensor –
• Remedy fault.
? Start-up – no ignition spark and no gas
supply – the display blinks and indicates 02?
! Short-circuit on the ignition or valve output –
• Check the wiring.
• Replace fine-wire fuse: 3.15A, slow-acting, H.
220
µA (DC)
T3,15A H
➔The fuse only protects the ignition output! After a
short-circuit on the valve output, an internal fuse
in the unit trips, which cannot be changed. Re-
turn the unit to the manufacturer for inspection.
Checking the safety function
• Close the manual valve.
• Start the automatic burner control unit several
times and check that it operates safely.
• If it does not operate correctly, return the auto-
matic burner control unit to the manufacturer.
0 4
? Operation – flame burning – burner inter-
rupted– the display blinks and indicates 04?
! Flame failure during operation.
• Read off the flame signal (parameter 01 ) – see
page 10 (12 Reading off the flame signal
and the parameters).
If the flame signal is lower than the switch-off
threshold (parameter 04), this may be attribut-
able to the following causes:
! Short-circuit on the flame rod as the result of
soot, dirt or moisture on the insulator–
! Flame rod not correctly positioned at the flame
edge–
! Gas/air ratio incorrect –
! Flame not contacting burner ground as the result
of excessively high gas or air pressure–
! Burner or IFD not (adequately) grounded –
! Short-circuit or discontinuity on the flame signal
cable–
IFD258:
! The set value for the cut-off sensitivity is too
high–
! Soiled UV sensor –
• Remedy fault.

IFD244, IFD258 · Edition 06.23
EN-9
0 9
? The display blinks and indicates 09?
! The actuation of the input for the ϑsignal (termi-
nal3) is faulty.
! The ϑsignal has been activated too often during
the safety time on start-uptSA. The unit start-up
was stopped 4 consecutive times during the
safety time.
• Remedy cause.
➔ ϑ signal minimum ON time (terminal3):
IFD..-3: 8s
IFD..-5: 10s
IFD..-10: 15s
The times must be at least this long, otherwise
the automatic burner control unit cannot monitor
the burner.
1 0
? The display blinks and indicates 10.
! Actuation of the remote reset input is faulty.
! Too many remote resets. More than 5resets
have been conducted within the last 15minutes,
either automatically or manually–
! Fault caused by another previous fault which is
signalled because the actual cause has not been
remedied, for example.
• Pay attention to previous fault messages.
• Remedy cause.
➔The cause will not be remedied by performing a
reset every time a fault lock-out occurs.
• Check whether remote reset complies with
standards (EN746 allows resetting only under
supervision) and correct if necessary.
➔The IFD may only be reset manually under
supervision.
• Press the Reset/Information button on the IFD.
2 8
? The display blinks and indicates 28?
! An internal device error occurred.
• Remove the IFD and return it to the manufac-
turer.
2 9
? The display blinks and indicates 29?
! An internal device error occurred.
• Reset the unit.
3 1
? The display blinks and indicates 31?
! Abnormal data change in the factory default
parameter settings of the IFD.
• Establish the cause of the fault to avoid repeat
faults.
• Ensure that the cables have been installed
properly– see page 4 (6 Cable installa-
tion).
• Establish the cause of the fault to avoid repeat
faults.
3 2
? The display blinks and indicates 32?
! Supply voltage too low.
• Operate the IFD in the specified mains voltage
range (mains voltage +10/-15%, 50/60Hz).
! An internal device error occurred.
• Remove the unit and return it to the manufac-
turer for inspection.
3 3
? The display blinks and indicates 33?
! Faulty parameterization.
! An internal device error occurred.
• Remove the unit and return it to the manufac-
turer for inspection.
5 2
? The display blinks and indicates 52?
! The IFD is being permanently reset.
IFD244:
! Apply voltage to terminal 6only for reset, approx.
1second– see page 4 (7 Wiring).
IFD258:
• Apply voltage to terminal 4only for reset,
approx. 1second– see page 4 (7 Wiring).
5 3
? The display blinks and indicates 53?
! A start-up has been initiated during the cycle
lock.
• Adjust the timing cycle to the safety time on
start-up and to the ignition device.

IFD244, IFD258 · Edition 06.23
EN-10
tSA
[s]
tZ
[s]
Type of
ignition
Cycle lock
[s]
3 1.8 TZI 10
5 3 TZI 12
10 6 TZI 15
3 1.8 IFD..I 36
5 3 IFD..I 60
10 6 IFD..I 120
8 3
? The display blinks and indicates 83?
! The UV sensor connections for ionization and
N are confused; the UV sensor is signalling a
negative flame signal.
• Check the UV sensor connections and undo
the pole reversal.
9 3
? The display blinks and indicates 93?
! The potentiometer for setting the cut-off point is
defective.
• Change the cut-off point setting on the poten-
tiometer for checking.
• If the measure described above does not help,
the unit has probably suffered a hardware
defect– remove the unit and return it to the
manufacturer for inspection.
0 08 8
81- 99
? The display blinks and indicates 81– 99?
! System fault – the IFD has performed a safety
shut-down. The cause may be a unit defect or
abnormal EMC influence.
• Ensure that the ignition cable has been
installed properly– see page 4 (6 Cable
installation).
• Ensure that the EMC regulations for the
system are satisfied– particularly for systems
with frequency converters– see page 4 (6
Cable installation).
• Reset the unit.
• Check mains voltage and frequency.
• If the measures described above do not help,
the unit has probably suffered a hardware
defect– remove the unit and return it to the
manufacturer for inspection.
0 08 8
81- 99
? The display is permanently lit and shows a
dash at the top right.
! The IFD2xx has detected a fault during internal
tests and performed a safety shut-down.
➔The fault may have been caused by external
interference during use.
• Ensure that the ignition cable has been
installed properly– see page 4 (6 Cable
installation).
• Check the connection between burner ground
(PE) and automatic burner control unit.
• Adjust ignition gap on burner to max. 2mm.
• Interruptions to the power supply are to be
avoided as far as possible.
• Ensure that the entire system complies with
the requirements of the EMC Directive.
• Press the Reset/Information button and the
On/Off button together for at least 5s.
• If these measures do not help, remove the unit
and return it to the manufacturer for inspec-
tion.
? IFD does not start even though all faults
have been remedied and the IFD has been
reset?
• Remove the unit and return it to the manufac-
turer for inspection.
12 READING OFF THE FLAME SIG-
NAL AND THE PARAMETERS
• Press the Reset/Information button for 2s.
The display changes to parameter 01.
• Release the Reset/Information button. The
display stops at this parameter and indicates
the related value.
• Press the Reset/Information button again for
1s. The display changes to the next param-
eter. All parameters can be recalled one after
the other in this way.
➔If the button is pressed only briefly, the display
indicates what parameter is currently being
displayed.
➔The normal program status is displayed again
approx. 60seconds after the last time the button
is pressed.
Parameter list
01 Flame signal ( 0–25 µA)
04 Burner switch-off threshold ( 2–20 µA)
12
Burner restart:
0= Immediate fault lock-out
1= Restart