Lamtec ETAMATIC OEM User manual

www.lamtec.de
Sensors and Systems for Combustion Engineering
Quick Reference for Endusers
ETAMATIC OEM
ETAMATIC S OEM

2
Table of Contents
Table of Contents
1 General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1 Validity of these Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.1 For Your Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3 Brief Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3.1 Life Cycle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
4 Operating Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
4.1 Starting with Pilot Burner . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
4.2 Starting without Pilot Burner . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
5 Customer Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
5.1 Display and Operational Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
5.2 Contrast Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
5.3 Key Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
5.3.1 Initial State. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
5.3.2 Display Level 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
5.3.3 Display Level 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
5.3.4 Manual. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
5.3.5 RESET. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
6 Fault. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
6.1 Reading Faults. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
6.2 Recalling Fault History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
6.3 Resetting Faults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
7 CO/O2 Control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
7.1 What happens if a fault occurs in the O2 trim? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
7.2 Resetting O2 Errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
7.3 Calling Fault History O2 trim . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
7.4 Calling CO/O2 Control Text Messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
8 Internal Burner Firing Rate Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
8.1 Purpose . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
8.2 Moving Screen "Actual Temperature is too high". . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
8.3 Changing Setpoint of Burner-Firing-Rate Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
8.4 Burner-Firing-Rate specified by hand . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
8.5 How to Change the Burner-Firing-Rate Controller with the Customer Interface . . . . . . 14
8.6 Displaying the Running Time Meter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
8.7 Calling the Checksums . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
9 Appendix. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
9.1 Mode Abbreviations Used . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
9.2 Fuses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
9.3 EU Declaration of Conformity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

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1 General Information
1 General Information
1.1 Validity of these Instructions
These instructions apply to the following device(s): ETAMATIC OEM in any configuration.
These devices conform to the following standards and regulations:
• DIN EN 298: 2012-11
• DIN EN 1643: 2014-09
• DIN EN 13611:2011-12
• DIN EN 60730-2-5: 2015-10
• DIN EN 60730-1:2012-10
• 2014/35/EU Low Voltage Directive
• 2014/30/EU EMC-Directive
• 2014/68/EU Pressure Equipment Directive
• (EU) 2016/426 Gas Appliance Directive
• 2011/65/EU RoHS
Test symbols: CE-0085 AU 0207
The ETAMATIC OEM is a control unit for combustion systems.
NOTICE
Respect the national safety regulations and standards.

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2 Safety
2 Safety
2.1 For Your Safety
The following symbols are used in this document to draw the user's attention to important safe-
ty information. They are located at points where the information is required. It is essential that
the safety information is observed and followed, and that applies particularly to the warnings.
DANGER!
This draws the user's attention to imminent danger. If it is not avoided, it will result in death or
very serious injury. The plant including its surroundings could be damaged.
WARNING!
This draws the user's attention to the possibility of imminent danger. If it is not avoided, it may
result in death or very serious injury. The plant including its surroundings could be damaged.
CAUTION!
This draws the user's attention to the possibility of imminent danger. If it is not avoided, it may
result in minor injuries. The plant including its surroundings could be damaged.
NOTICE
This draws the user's attention to important additional information about the system or system
components and offers further tips.
The safety information described above is incorporated into the instructions.
Thus, the operator is requested to:
1 Comply with the accident prevention regulations whenever work is being carried out.
2 Do everything possible within his control to prevent personal injury and damage to prop-
erty.

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3 Brief Description
3 Brief Description
ETAMATIC OEM/ETAMATIC S OEM is a control system for combustion plants. Depending on
the reference variable, the ETAMATIC OEM adjusts up to 4 actuators according to freely pro-
grammable curves.
The ETAMATIC OEM hat 4 three point step output.
ETAMATIC S OEM has 3 three point step continuous output and a 0/4-20 mA output.
The ETAMATIC OEM has a 25 pin D-SUB-socket with a serial interface for remote control or
remote display via PC (windows Software seperately available). Connections for PROFIBUS-
DP, TCP/IP (MODBUS TCP), Interbus-S and Modbus RTUare optionally available. Other BUS
systems available on request. The connection to further plant components such as fault indi-
cator systems or O2 trim occurs by LAMTEC SYSTEM BUS interface on a 9 pin D-SUB-sock-
et.
The operation occurs through the optionally available PC software or operating unit. For dis-
play to end customers, connect to customer interface via LAMTEC SYSTEM BUS. The oper-
ation via PC software is written in a seperate manual.
3.1 Life Cycle
The device has a designed lifetime * of 250,000 burner start-up cycles, which, under normal
operating conditions in heating mode, correspond to approx. 10 years of usage (starting from
the production date given on the type plate).
This lifetime is based on the endurance tests specified in standard EN230/EN298 and the ta-
ble containing the relevant test documentation as published by the European Association of
Component Manufacturers (Afecor) (www.afecor.org).
The designed lifetime is based on use of the device according to the manufacturer’s basic doc-
umentation. After reaching designed lifetime in terms of number of burner start-up cycles, or
the respective time of usage, the device must be replaced by authorized personnel.
*The designed lifetime is not the warranty time specified in the Terms of Delivery

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4 Operating Description
4 Operating Description
A signal is first fed to terminal 58 (Burner On) indicating when the burner is to start.
The ETAMATIC OEM then interrogates the boiler safety interlock chain (ETAMATIC) or the
common safety interlock chain (ETAMATIC OEM) and the contact of the air pressure monitor.
If it does not detect an "OK" condition, the text of a corresponding message appears and the
operating control stops.
If all signals are OK, the fan output is activated and the ducts run to their bottom stop as a
check.
Once all channels have reached their bottom stop, they open for aeration. The valve leakage
test runs in parallel (gas operation only).
In the case of control elements the aeration is used to enter and/or test the range limits. After
reaching its top position, the fuel control element runs back into the ignition position. All other
channels remain in OPEN position. The ETAMATIC OEM then interrogates the air pressure
monitor. If this signal is OK, the parameterised aeration time runs. If a channel is configured
for re-circulation, it opens with a time-delay. On reaching the parameterised re-circulation de-
lay time, the aeration time stops. As soon as the re-circulation channel has reached the aera-
tion position, the aeration time is resumed. When this time has expired all the channels run to
the programmed ignition position (re-circulation fully closed). After the lapse of the aeration
time, all channels run to the programmed ignition position (recirculation closed).
Once all the channels have reached the ignition position the ignition transformer is activated
on ist own for 3 seconds.
Before the valves open, the respective fuel safety interlock chain has to be close.
4.1 Starting with Pilot Burner
The ignition valve and main gas 1 (in gas operation) or the ignition valve alone (in oil operation)
run open. The pilot flame forms and the flame detection detects the flame. The flame detection
sends the signal to the burner control device.
On expiry of the 1st safety time, the ignition transformer switches off. For 3 sec. (stabilisation
time) the pilot burner burns alone. Then main gas 2 or the oil valve opens and remains acti-
vated in parallel with the ignition valve for the duration of the 2nd safety time. The ignition valve
closes again at the end of this period.
3 seconds after ignition, all channels run to the programmed base firing rate point. The ETA-
MATIC OEM remains in base firing rate position until control release is given.
After control release the ETAMATIC OEM follows the power control unit’s default setting.
A shut off follows the cancelling of the signal of the terminal 58. The main valves close. In gas
operation, first main gas 1 and second main gas 2 closes with a delay of approx. 5 sec., in
order to allow the test line between the solenoid valves to burn out. In the event of a fault shut-
down, both close immediately.
If configured for post-purge, the air channels open again for this period.
Thereafter the ETAMATIC OEM is in the "OFF" mode.
4.2 Starting without Pilot Burner
The main valves open and together with the ignition transformer remain activated for the du-
ration of the safety time. During this time the flame signal appears.

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5 Customer Interface
5 Customer Interface
5.1 Display and Operational Controls
5.2 Contrast Settings
To adjust contrast values of the customer interface display use the arrow keys:
Fig. 5-1 Customer interface
Description of key functions:
→ RESET
→ Firing-rate/fault history up
→ Firing-rate/fault history down
→ MANUAL mode EIN/AUS
→ Umschaltung der Anzeige
– Fuel/air ratio control
– O2
– Flame intensity
– Operating hours
Fig. 5-2 Display with external burner-
firing-rate-controller
Fig. 5-3 Display in automatic mode Fig. 5-4 Display in manual mode
70 = setpoint of firing-rate controller
65 = actual value of internal firing-rate controller
600 = external firing-rate input
500 = internal firing-rate (current status of fuel/air ratio control)
These are sample values, which may differ from real situation.
Keep RESET key pressed and arrow key up = contrast value +2
Keep RESET key pressed and arrow key down = contrast value –2

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5 Customer Interface
5.3 Key Functions
5.3.1 Initial State
In the initial state (e.g. after power on) the display shows the condition of the ETAMATIC OEM
in the upper line (burner off, control operation, etc..) At the same time, queuing codes are cor-
rectly displayed ("Actuator runs")..
In the lower line of the display, it shows external and internal firing rate. If the parameter set-
tings of the burner firing rate controller is active, it shows setpoints and actual values of the
firing rate controller additionally.
In the initial state of the display (not on manual mode) while no fault of ETAMATIC OEM is
pending, the upper indicator line switches to:
First of all, the display shows an entry from the fault history including the error code and the
firing rate values.
The history display changes back to its prior display after 5 s.
Fault of the O2 controller, which lasts longer than 30 s would be saved.
After an idle time of 3 seconds, provided that there is no operation of the keys within this time,
the display shows a describing text of the selected entry. The describing text is copied behind
the error code. Both, error code and describing text are scrolling through the display.
Beispiel:
„ 1->H004 527 527 *** Flame fault during operation (Op.hours 000172)“
5.3.2 Display Level 1
Effect of the display level key
In the initial state of customer interface, this key indicates different operating values (even in
the event of an error).
The indications are called sequentially whenever you press the key:
press the RESET key, to change the primary status.
• Status display (operating mode) ETAMA-
TIC OEM
• Fault history entry 1
• ...
• ...
• ...
• Fault history entry 9
• Fault history entry 10
• O2-Fault history entry 20
• O2-Fault history entry 19
• ...
• ...
• ...
• O2-Fault history entry 2
• O2-Fault history entry 1
1 147 1 00 487
regular fault internal firing
rate
curve set operating hours

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5 Customer Interface
NOTICE
If the mode „Setting firing rate controller“ is active (LED manual flashes) this key has no effect.
5.3.3 Display Level 2
5.3.4 Manual
Function of the manual key
In the HAND mode, the regular firing rate input of ETAMATIC OEM can be manually adjusted.
5.3.5 RESET
If the O2 trim is in fault condition and the lower display line shows the O2 value, the RESET-
key also resets the O2 trim.
In the customer interface the RESET–key effects as follows:
• Leaving the 2nd display level in the lower display line.
• Status report in the upper display line
• Disable manual-mode
• Deactivate mode „set burner firing rate controller“
• Display of operating mode (e.g. Burner OFF)
• Display of O2 value* (if activated)
• Flame intensity
• Operating hours
Press the key for more than 5 sec., the lower display line switches to the 2nd level. (see
chapter 8.7 Calling the Checksums).
Press the RESET Key to leave display level 2.
Press HAND key → LED in HAND key lights up
With these arrow keys the firing rate value can be adjusted.
Press HAND key to finish.
Faults can be reset through the RESET key.

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6 Fault
6 Fault
6.1 Reading Faults
In initial state of customer interface (not MANUAL mode) while no fault state of ETAMATIC
OEM occured the upper line is switching over.
In case of a fault a current fault code and corresponding firing-rate values are shown. In the
next stage a marquee with the pending fault is displayed (see chapter 5.3.1 Initial State).
6.2 Recalling Fault History
The ETAMATIC OEM records the last 10 faults including the corresponding operating hours
counter
value.
In initial state (not MANUAL mode), provided that no fault message of the ETAMATIC OEM is
pending, the upper display line is switching over:
6.3 Resetting Faults
NOTICE
This may result in a RESET of the O2 trim when a fault of O2 trim is pending (see chapter 5.3.5
RESET).
Contact your service provider in an event of a fault.
You may read off the display values using the SHIFT key (e.g. of operating hours, time)
in the event of a fault. All display values are frozen.
You may scroll through the fault history using the arrow keys.
See also chapter 5.3.1 Initial State.
Press the RESET key to reset a fault of ETAMATIC OEM.

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7 CO/O2 Control
7 CO/O2 Control
Customer Interface Display
Fig. 7-1 O2 trim display
Display of CO is replacing O2 display values as soon as CO control is active.
Fig. 7-2 CO control display
Startup-Manager Display
Example:
I - O2 actual value
II - O2 setpoint
III - Operating status
a Threshold position:
"-" → Reduce air
"+" → Raise air
Fig. 7-3 O2 trim display Fig. 7-4 CO control display

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7 CO/O2 Control
Example for deactivated control if O2 trim may not assume.
Example for active dynamic tests
D2 ... Dynamic test with 20 % change in correction, COe 120 ppm
I - O2 actual value
II - COe value
a Threshold position:
"-" → Reduce air
"+" → Raise air
b 11 → 11 optimisation steps are already car-
ried out
c big letter "C" → optimisation with increasing
firing rate
small letter "c" → optimisation with decreasing
firing rate
O2 actual value 0,7%
+ → CO edge detected, air is increased, 4 optimising steps already carried out
c → small letter "c" means optimisation in the optimisation curve for reduced firing-
rate COe 50 ppm

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7 CO/O2 Control
7.1 What happens if a fault occurs in the O2 trim?
A warning is indicated in case of a fault and the O2 trim is switched off. The preset values are
set anew. The burner would not shut-down automatically.
1 Fault message is displayed (O2 controller faulty).
2 Explaination text is displayed (e.g. O2 measuring value faulty).
3 Settings of preset basic value without control e.g. for air deficiency.
4 Display of running text (O2 trim faulty)
NOTICE
The display texts are shown every 10 - 15 s alternately. Therefore a keypress to call the ex-
planation text is not necessary.
7.2 Resetting O2 Errors
If the O2 trim is in fault mode you can read it in the lower display line (see chapter 5.3.5 RE-
SET).
By pressing RESET you set back the O2 fault message.
The O2 fault is set back with every burner start-up automatically. This is applicable because
with every burner start-up a 100% check of O2 trim is carried out. A manual RESET of O2 fault
is possible at any time:
7.3 Calling Fault History O2 trim
A key to call up all the text information is not necessary because a running text with all infor-
mation is displayed automatically.
7.4 Calling CO/O2 Control Text Messages
Switch to display of O2 trim
Press RESET → ETAMATIC OEM in mode O2 trim?
If not, change to the required mode by pressing SHIFT.
You can browse through the fault history with the ’up’ and ’down’ keys.
With the ’up’ key, you will need to browse through the last 10 burner faults
before you reach the last O2 fault.
With the ’AB’ key, you can retrieve the oldest O2 fault.
Press key RESET
Press key SHIFT

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8 Internal Burner Firing Rate Controller
8 Internal Burner Firing Rate Controller
8.1 Purpose
The internal firing rate controller calculates the burner firing rate against a pre-defined setpoint
value (e.g. as a function of temperature or pressure) by comparison with the actual value. This
position will be transferred to the electronic fuel/air ratio control as a default value.
8.2 Moving Screen "Actual Temperature is too high"
8.3 Changing Setpoint of Burner-Firing-Rate Controller
see chapter 8.5 How to Change the Burner-Firing-Rate Controller with the Customer Interface
8.4 Burner-Firing-Rate specified by hand
It is also possible to switch the ETAMATIC OEM to "Manual Control" with the terminals. By
short-circuiting the Pt100 signal (e.g. bridge terminal 19 and 20) the burner firing rate control-
ler is switched off. The fuel/air ratio controller then directly follows the input at the default firing
rate input. The display shows LE instead of HA.
NOTICE
Only use manual control while monitoring the system.
8.5 How to Change the Burner-Firing-Rate Controller with the Customer Interface
Keep pressing the HAND key for more than 5sec., to switch the customer interface to the
mode „set setpoints of burner firing rate controller“. This is only possible when burner firing
rate controller is activated. At the same time, the HAND mode for manual firing rate input ends.
In the mode „setting firing rate controller“ the LED in the manual-key flashes. The lower display
line shows the output regulator adjustment, the setpoint value and the actual value.
Active constant controller:
The Gerät can be started nevertheless by pressing the manual mode key provided that
the maximum temperature is not exceeded.
By pressing the manual mode key once more you switch to AUTO mode.
Press key MANUAL to move the regular firing rate input of the firing rate controller.
Press the keys 2 and 3 to variegate the burner firing rate.
Press key MANUAL again to cancel firing rate controller.
Press the key for 5 s long. Display = actual setpoint 1 or 2.
This depends on the choice of setpoint values of terminal 50:
Terminal 50 = 0 V = setpoint value 1
Terminal 50 = 24 V = setpoint value 2

15
8 Internal Burner Firing Rate Controller
Active control by atmospheric condition:
8.6 Displaying the Running Time Meter
NOTICE
The sum of operating hours curve set 1 and curve set 2 do not result automatically in the value
of operating hours which are displayed in total.
The counter refers to the total sum of operating hours of ETAMATIC OEM. It is started as soon
as voltage is applied to the device (this counter also provides basic data to fault history).
The operation hours counter refers to the operating hours of the burner. It starts to run as soon
as the burner is in operation with the corresponding curve set (Flame signal is applied).
The required setpoint values can be set through the arrow keys.
Press HAND or RESET key to leave the SET BURNER FIRING RATE CON-
TROLLER mode.
Press the key for 5 s long. Display = actual setpoint 1 or 2 and actual value.
This depends on the choice of setpoint values of terminal 50:
Terminal 50 = 0 V = setpoint value 1
Terminal 50 = 24 V = setpoint value 2
Re-press the key. Display = "LowVal" and actual lower setpoint value.
The lower setpoint value can be set through the arrow keys.
Re-press the key. Display = "HighVal" and actual upper setpoint value.
The upper setpoint value can be set through the arrow keys.
Press HAND or RESET key to leave the SET BURNER FIRING RATE CON-
TROLLER mode.
Press SHIFT key to call operating hours on display.
The display shows alternately:
– The operating hours would be scrolled automatically after 3 s.
– Op.hours: 000000 (Total)
– Burner.1: 000000 (burner 1 Op.hours)
Plant 1: 000000 (burner 1 no. of starts)
– Burner 2: 000000 (burner 2 Op.hours)
Plant 2: 000000 (burner 2 no. of starts)
– At 2 oil curves, burner 1 + burner 3 instead of burner.2
– At 2 gas curves, burner 2 + burner 4 instead of burner 2

16
8 Internal Burner Firing Rate Controller
8.7 Calling the Checksums
When parameters are changed, the check sums can only be refreshed after the restart of the
device.
If two customer interfaces were installed at the LSB the check sums may only be called when:
• simultaneously pressing at both customer interfaces the shift key for a long time
or
• one customer interfaces is disconnected temporarily.
Keep pressed the SHIFT key for a long time.
→ One after the other is shown:
CRC 16 of level 0, 1 and 2→ changeable by authorised personnel only
CRC 16 der Ebene 4 → changeable by LAMTEC only
1. safety time oil in s
2. safety time oil in s
1. safety time gas in s
2. safety time gas in s
Pre-purge period in s
Press the SHIFT key at the customer interface to abort the process.

17
9 Appendix
9 Appendix
9.1 Mode Abbreviations Used
Fig. 9-1 Status display at customer interface Fig. 9-2 Display at programming unit
Short text Description
BE → READY (signal on terminal 58)
ZÜ → IGNITION POSITION or IGNITION
EZ → SETTING/IGNITION position (same as IGNITION, but ETAMATIC
OEM on SETTING)
GL → BASE FIRING RATE
EG → SETTING/BASE FIRING RATE” (as BASIC FIRING RATE, but ETA-
MATIC OEM on SETTING)
NA → POST-PURGE
AU → BURNER OFF (no signal present)
EL → SETTING
SL → CLEAR MEMORY
EV → SETTING/PRE-PURGE" (as "PRE-PURGE", but ETAMATIC OEM on
SETTING)
ES → SETTING/CONTROL (as AUTOMATIC but ETAMATIC OEM on SET)
ST → FAULT
VO → PRE-PURGE
HA
or Hand
→ MANUAL MODE (burner efficiency may be adjusted manually)
no display → Burner set to AUTOMATIC during OPERATION
LE → EXTERNAL FIRING RATE (firing rate controller disabled by digital
input)

18
9 Appendix
9.2 Fuses
NOTICE
PC connection possible only via LAMTEC interface adapter!
NOTICE
For exchange of the fuses F3, F4, F5 these specifications are to be complied:
- 2A slow blow
- high breaking capacity according to IEC 60127-2, Sheet 5: 1500A @ 250VAC
- melting integral I²t < 40 A²s
- e.g. Littelfuse 0215002.(M)XP
Fuses which fulfills these requirements are ceramic tube fuses with the label T2AH 250V.
Fig. 9-3 Rear view ETAMATIC OEM
F1 Gerät
F2 Control elements
F3 Main gas 1, oil, oil pump
F4 Main gas 2, pilot valve, ignition
transformer
F5 Fan, fault indication
F6 24 VDC
S1 9-pole Sub-D connector for
LAMTEC SYSTEM BUS
S2 Communications interface

19
9 Appendix
9.3 EU Declaration of Conformity