Siemens LME SERIES Operating and maintenance instructions

CC1N7101en
27.11.2008
Building Technologies
HVAC Products
7101
Burner Controls LME...
Burner controls for the supervision of 1- or 2-stage gas or gas / oil burners of
small to medium capacity, operation, with or without fan in intermittent.
The LME… and this Data Sheet are intended for use by OEMs which integrate the
burner controls in their products.
Use, features LME… burner controls are used for the startup and supervision of 1- or 2-stage gas or
gas / oil burners in intermittent operation. The flame is supervised by an ionization
probe or flame detector QRA… with ancillary unit AGQ3…A27 for gas / oil forced draft
burners or blue–burning flames with blue-flame detectors QRC...
In terms of housing dimensions, the LME... are identical with the LGB… and LMG…
burner controls (refer to «Type summary»).
- For gas burners with or without fan to EN 298: 2003
- For gas burners with fans conforming to EN 676
- For oil burners to EN 230: 2005
- Undervoltage detection
- Air pressure supervision with functional check of the air pressure switch during
startup and operation
- Electrical remote reset facility
- Multicolor indication of fault status and operational status messages
- Limitation of the number of repetitions
- Accurate control sequence thanks to digital signal handling
- Controlled intermittent operation after 24 hours of continuous operation
Supplementary documentation
Product Range Overview LME…............................................................................Q7101
Use
Features

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Warning notes
To avoid injury to persons, damage to property or the environment, the following
warning notes must be observed!
Do not to open, interfere with or modify the unit!
•All activities (mounting, installation and service work, etc.) must be performed by
qualified staff
•Before making any wiring changes in the connection area, completely isolate the
plant from mains supply (all-polar disconnection). Ensure that the plant cannot be
inadvertently switched on again and that it is indeed dead. If not observed, there is
a risk of electric shock hazard
•Ensure protection against electric shock hazard by providing adequate protection
for the burner control’s connection terminals
•Check the connecting lines of the air pressure switch for short-circuits (connection
terminals 3, 6 and 11)
•Press the lockout reset button / operation button of LME... or the AGK20… lockout
reset button extension only manually (applying a force of no more than 10 N) with-
out using any tools or pointed objects
•Fall or shock can adversely affect the safety functions. Such units must not be put
into operation, even if they do not exhibit any damage
•Each time work has been carried out (mounting, installation, service work, etc.),
check to ensure that wiring is in an orderly state and make the safety checks as
described in «Commissioning notes»
Engineering notes
•When used in connection with actuators, there is no position feedback signal from
the actuator to the burner control
•When used in connection with actuators, the requirements of applicable norms and
regulations must be observed
•The running times of the actuators must match the burner control’s program. An
additional safety check of the burner control together with the actuators is required
•When substituting burner controls type LGB… or LMG… by LME…, the AGQ1… or
AGQ2… ancillary unit must be replaced by the AGQ3…A27
Mounting notes
•Ensure that the relevant national safety regulations are complied with

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Installation notes
•Always run the high ignition cables separate from the unit and other cables while
observing the greatest possible distance
•Do not mix up live and neutral conductors
•Install switches, fuses, earthing, etc., in compliance with local regulations
•The connection diagrams show the burner controls with earthed neutral conductor.
In networks with non-earthed neutral conductor and ionization current supervision,
terminal 2 must be connected to the earth conductor via an RC unit (type reference
ARC 4 668 9066 0). It must be made certain that local regulations are complied
with (e.g. protection against electric shock hazard) since AC 120 V (50 / 60 Hz) or
AC 230 V (50 / 60 Hz) mains voltage produces peak leakage currents of 2.7mA
•Make certain that the maximum permissible current rating of the connection termi-
nals will not be exceeded
•Do not feed external mains voltage to the control outputs of the unit. When testing
the devices controlled by the burner control (fuel valves, etc.), the LME… must not
be connected
•In the case of burners with no fan motor, an AGK25 must be connected to terminal
3 of the unit, or else the burner cannot reliably be started up
•For safety reasons, feed the neutral conductor to terminal 2. Connect the burner
components (fan, ignition transformer and fuel valves) to the neutral distributor as
shown below in figure. The connection between neutral conductor and terminal 2 is
prewired in the base
Example
23
745
BV2
BV1
Z
M
N7101a05/0804
Correct wiring of neutral conductors!
Electrical connection of flame detectors
It is important to achieve practically disturbance- and loss-free signal transmission:
•Never run detector cables together with other cables
– Line capacitance reduces the magnitude of the flame signal
– Use a separate cable
•Observe the permissible length of the detector cables (refer to «Technical data»)
•The ionization probe is not protected against electric shock hazard
•Locate the ignition electrode and the ionization probe such that the ignition spark
cannot arc over to the ionization probe (risk of electrical overloads) and that it can-
not adversely affect the supervision of ionization
•Insulation resistance
– Must be a minimum of 50 MΩbetween ionization probe and ground
– Soiled detector holders reduce the insulation resistance, thus supporting cree-
page currents
•Earth the burner in compliance with the relevant regulations; earthing the boiler
alone does not suffice
Legend
BV... Fuel valve
M Fan motor
Z Ignition transformer

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Commissioning notes
•When commissioning the plant for the first time or when doing maintenance work,
make the following safety checks:
Safety check to be carried out Anticipated response
a) Burner startup with previously inter-
rupted line to the flame detector LME11… / LME41.051...: Max. 3 repetitions
LME2… / LME41.052... / LME41.053... / LME41.054... / LME41.071...
/ LME41.09... / LME44...:
Lockout at the end of «TSA»
b) Burner operation with simulated loss of
flame. For that purpose, cut off the fuel
supply
LME11… / LME41.051...:
•Establishment of flame at the end of «TSA» →Max. 3 repetitions
•No establishment of flame at the end of «TSA» →Lockout
LME2… / LME44...:
Lockout
LME41.052... / LME41.053... / LME41.054... / LME41.071... /
LME41.09...:
Repetition
c) Burner operation with simulated air
pressure failure Immediate lockout
LME41...:
Safety shutdown / restart

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Standards and certificates
Conformity to EEC directives
- Electromagnetic compatibility EMC (immunity)
- Directive for gas-fired appliances
- Low-voltage directive
- Directive for pressure devices
2004/108/EC
90/396/EEC
2006/95/EC
97/23/EC
ISO 9001: 2000
Cert. 00739 ISO 14001: 2004 Cert. 38233
Identification code to EN 298 / EN 230
LME11… F M C L X N
LME21… / LME22… / LME23… F T L L X N
LME41... A M C L X N
LME44… A B L L X N
Type
LME11.230A2 --- x x ---
LME11.330A2 --- x x x
LME21.130A1 x x x ---
LME21.130A2 x x x x
LME21.230A2 x x x x
LME21.330A1 x x x ---
LME21.330A2 x x x x
LME21.350A1 x x x ---
LME21.350A2 x x x x
LME21.550A2 x x x x
LME22.131A2 x x x x
LME22.231A2 x x x x
LME22.232A2 x x x x
LME22.233A2 x x x x
LME22.331A1 x x x ---
LME22.331A2 x x x x
LME22.333A2 x x x ---
LME23.331A2 x x x x
LME23.351A2 x x x x
LME41.051A2 --- x x ---
LME41.052A2 --- x x ---
LME41.053A2 --- x x ---
LME41.054A2 --- x x ---
LME41.071A2 --- x x ---
LME41.091A2 --- x x ---
LME41.092A2 --- x x ---
LME44.056A2 --- x x x
LME44.057A1 --- x x ---
LME44.057A2 --- x x x
Service notes
•Use the KF8872 service adapter for short periods of time only

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Life cycle Burner controls has a designed lifetime* of 250,000 burner startup 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 field). This lifetime is based on the
endurance tests specified in standard EN230 / EN298 and the table 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 burner controls according to the manufac-
turer’s Data Sheet. After reaching the designed lifetime in terms of the number of
burner startup cycles, or the respective time of usage, the burner control is to be re-
placed by authorized personnel.
* The designed lifetime is not the warranty time specified in the Terms of Delivery
Disposal notes The unit contains electrical and electronic components and must not be disposed of
together with domestic waste.
Local and currently valid legislation must be observed.
Mechanical design
•Units of plug-in design like their predecessor types LGB... and LMG... (refer to
«Dimensions»)
•The housing is made of impact-proof, heat-resistant and flame-retarding plastic. It
is of plug-in design and engages audibly in the base
•The housing accommodates the
- microcontroller for the control sequence and the control relays for load control
- electronic flame signal amplifier (ionization)
- lockout reset button with its integrated 3-color signal lamp (LED) for operational
status and fault status messages and the socket for connecting the OCI400 inter-
face adapter or the AGK20... lockout reset button extension
•Multicolor indication for operational status and fault status messages
•Transmission of operational status and fault status messages and detailed service
information via additional OCI400 interface adapter and ACS410 PC Windows
software
•Burner capacity unlimited (thermal output on startup ≤120 kW)
•3 repetitions in the event of loss of flame during operation (LME11… /
LME41.051…)
•Repetition in the event of loss of flame during operation (LME41.052… /
LME41.053… / LME41.054… / LME41.071… / LME41.091… / LME41.092…)
LME...
Indication and
diagnostics
Versions

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Type summary (other types of burner controls on request)
The type references given below apply to the LME… burner control without plug-in
base and without flame detector. For ordering information on plug-in bases and other
accessories, refer to «Ordering».
Flame detector Type
reference Main voltage
tw
approx.
s
t1
min.
s
TSA
max.
s
t3n
approx.
s
t3
approx.
s
t4
approx.
s
t10
min.
s 3)
t11
min.
s 1)
t12
min.
s 1)
Repe-
tition For replacing of
Burner controls for 1-stage burners (up to 120 kW output)
LME11.230A2 AC230V 2.5 20 3 2 2 --- 5 --- --- 3x
---
Ionization probe
(ION) LME11.330A2 AC230V 2.5 30 3 2 2 --- 5 --- --- 3x
---
Burner controls for 2-stage burners, without actuator control
LME21.130A1 AC 120 V 2.5 7 3 2 2 8 5 --- --- ---
LGB21.130A17
LME21.130A2 AC 230 V 2.5 7 3 2 2 8 5 --- --- ---
LGB21.130A27
LMG21.130B27
LME21.230A2 AC 230 V 2.5 20 3 2 2 8 5 --- --- ---
LGB21.230A27
LMG21.230B27
LME21.330A1 AC 120 V 2.5 30 3 2 2 8 5 --- --- --- ---
LME21.330A2 AC 230 V 2.5 30 3 2 2 8 5 --- --- --- LGB21.330A27
LMG21.330B27
LME21.350A1 AC 120 V 2.5 30 5 4 2 10 5 --- --- --- LGB21.350A17
LME21.350A2 AC 230 V 2.5 30 5 4 2 10 5 --- --- --- LGB21.350A27
LMG21.350B27
Ionization probe
(ION) or flame
detector
QRA... 4) with
AGQ3...A27
LME21.550A2 AC 230 V 2.5 50 5 4 2 10 5 --- --- --- LGB21.550A27
Burner controls for 2-stage burners, with actuator control
LME22.131A2 AC 230 V 2.5 7 3 2 3 8 3 12 12 ---
LGB22.130A27
LMG22.130B27
LME22.231A2 AC 230 V 2.5 20 3 2 3 8 3 12 12 ---
---
LME22.232A2 AC 230 V 2.5 20 3 2 3 8 3 16.5 16.5 ---
LGB22.230A27
LMG22.230B27
LME22.233A2 AC 230 V 2.5 20 3 2 3 8 3 30 30 --- LMG22.233B27
LME22.331A1 AC 120 V 2.5 30 3 2 3 8 3 12 12 --- ---
LME22.331A2 AC 230 V 2.5 30 3 2 3 8 3 12 12 --- LGB22.330A27
LMG22.330B27
Ionization probe
(ION) or flame
detector
QRA... 4) with
AGQ3...A27
LME22.333A2 AC 230 V 2.5 30 3 2 3 8 3 30 30 --- ---
Burner controls for 2-stage burners, with actuator control
LME23.331A2 AC 230 V 2.5 30 3 2 3 8 3 12 12 --- LGB32.330A27
Blue flame
detector QRC… LME23.351A2 AC 230 V 2.5 30 5 4 1 10 3 12 12 --- LGB32.350A27
Legend
tw Waiting time 1) Max. running time available for actuator «SA»
TSA Safety time The actuator running time must be shorter
t1 Prepurge time 2) t22 + response time of flame relay
t3 Preignition time 3) Max. 65 s
t3n Postignition time 4) Only used for AC 230 V
t4 Interval between ignition «Off» and «BV2»
t10 Specified time for air pressure signal
t11 Programmed opening time for actuator «SA»
t12 Programmed closing time for actuator «SA»
t22 2nd safety time

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Type summary (other types of burner controls on request) [cont´d]
Flame detector Type refer-
ence Main voltage
tw
min.
s
t1´
min.
s
TSA
max.
s
t3n
approx.
s
t3
approx.
s
t4
approx.
s
t22
approx.
s Repetition For replacing of
Burner controls for atmospheric burners
LME41.051A2 AC 230 V 2,5 1 5 4 1 --- --- 3x ---
LME41.052A2 AC 230 V 2,5 1 5 4 10 --- --- X ---
LME41.053A2 AC 230 V 2,5 10 5 4 1 --- --- X ---
LME41.054A2 AC 230 V 2,5 1 5 4 1 --- --- X ---
LME41.071A2 AC 230 V 2,5 10 10 9 1 --- --- X ---
LME41.091A2 AC 230 V 2,5 1 10 9 10 --- --- X ---
Ionization probe (ION)
or flame detector
QRA... 4) with
AGQ3...A27
LME41.092A2 AC 230 V 2,5 1 10 9 1 --- --- X ---
Burner controls for atmospheric burners
LME44.056A2 AC 230 V 16 9 5 4 2 10 5 --- LGB41.255A27
LME44.057A1 AC 120 V 16 9 5 4 2 10 8 --- LGB41.258A17
Ionization probe (ION)
or flame detector
QRA... 4) with
AGQ3...A27 LME44.057A2 AC 230 V 16 9 5 4 2 10 8 --- LGB41.258A27
Legend
tw Waiting time 1) Max. running time available for actuator «SA»
TSA Safety time The actuator running time must be shorter
t1´ Purge time 2) Max. 65 s
t3 Preignition time 3) Max. 65 s
t3n Postignition time 4) Only used for AC 230 V
t4 Interval between ignition «Off» and «BV2»
t10 Specified time for air pressure signal
t11 Programmed opening time for actuator «SA»
t12 Programmed closing time for actuator «SA»
t22 2nd safety time

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Technical data Mains voltage AC 120 V +10% / -15%
AC 230 V +10% / -15%
Mains frequency 50...60Hz ±6%
Power consumption 12VA
External primary fuse (Si) Max. 10A (slow)
Mounting position Optional
Input current at terminal 12 Max. 5A
Weight Approx. 160g
Safety class I
Degree of protection IP40 (to be ensured through mounting)
Perm. cable length terminal 1 Max. 1m at a line capacitance of 100pF/m
(max. 3m at 15pF/m)
Perm. cable length from QRA… to
AGQ3…A27 (lay separate cable) Max. 20m at 100pF/m
Remote reset laid separately Max. 20m at 100pF/m
Perm. cable length terminals 8 and 10 Max. 20m at 100pF/m
Perm. cable lengths other terminals Max. 3m at 100pF/m
Perm. terminal load At cosϕ≥0.6 At cosϕ= 1
- Terminal 3 Max. 2.7A
(15A for max. 0.5s →only LME2…) Max. 3A
- Terminals 4, 5, 7 and 9 (11) Max. 1.7A Max. 2A
- Terminal 10 Max. 1A Max. 1A
Storage DIN EN 60721-3-1
Climatic conditions Class 1K3
Mechanical conditions Class 1M2
Temperature range -20...+60°C
Humidity <95% r.h.
Transport DIN EN 60 721-3-2
Climatic conditions Class 2K2
Mechanical conditions Class 2M2
Temperature range -20...+60°C
Humidity <95% r.h.
Operation DIN EN 60 721-3-3
Climatic conditions Class 3K3
Mechanical conditions Class 3M3
Temperature range -20...+60°C
Humidity <95% r.h.
Condensation, formation of ice and ingress of water are not permitted!
* The designed lifetime is not the warranty time specified in the Terms of Delivery
General unit data
Environmental
conditions

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Technical data (cont´d)
At mains voltageUN = AC 120 V ¹) UN = AC 230 V ¹)
Detector voltage between ionization probe and ground
(AC voltmeter Ri ≥10 MΩ) AC 50...120 V AC 115...230 V
Switching threshold (limit values):
Switching on (flame on) (DC ammeter Ri ≤5 kΩ)
Switching off (flame off) (DC ammeter Ri ≤5 kΩ)
≥DC 1.5µA
≤DC 0.5µA
≥DC 1.5µA
≤DC 0.5µA
Detector current required for reliable operation ≥DC 3µA ≥DC 3µA
Switching threshold in the event of poor flame during operation
(LED flashes green) Approx. DC 5µA Approx. DC 5µA
Short-circuit current between ionization probe and ground
(AC ammeter Ri ≤5 kΩ) Max. AC 50...150µA Max. AC 100...300µA
¹) For applications outside the European Community, operation at mains voltage
AC 120 V / AC 230 V ±10% is ensured
With the same quality of flame, the detector current with the LME… may be other
than with the LMG… / LGB…
Flame supervision with ionization is accomplished by making use of the conductivity
and rectifying effect of the flame. The flame signal amplifier only responds to the DC
current component of the flame signal. A short-circuit between ionization probe and
ground causes the burner to initiate lockout.
LME... 1
7101v01/0804
M
C
+
+-
ION
Legend
C Electrolytic capacitor 100...470µF; DC 10...25 V
ION Ionization probe
M Microammeter, Ri max. 5000Ω
For detector currents, refer to « Technical data ».
Flame supervision
with ionization probe
Note
Measuring circuit

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Technical data (cont´d)
Mains voltage AC 230 V +10% / -15%
Mains frequency 50...60Hz ±6%
Perm. cable length from QRA... to
AGQ3…A27 (lay separate cable) Max. 20m
Perm. cable length from AGQ3...A27 to
LME...A2 Max. 2m
Weight of AGQ3...A27 Approx. 140g
Perm. mounting position Optional
Degree of protection IP40, to be ensured through mounting
Power consumption 4.5VA
At mains voltage UNAC 220 V AC 240 V
Detector voltage at QRA... (with no load)
Terminal 3 off (refer to control sequence) DC 400 V DC 400 V
Terminal 3 on (refer to control sequence) DC 300 V DC 300 V
Detector voltage
Load by DC measuring instrument Ri > 10MΩ
Terminal 3 off (refer to control sequence) DC 380 V DC 380 V
Terminal 3 on (refer to control sequence) DC 280 V DC 280 V
DC current detector signals with UV detector
QRA... Min. required Max. possible
Measurement at the UV detector QRA… 200µA 500µA
In connection with LME…A2 burner controls, use of UV ancillary unit AGQ3...A27 is
mandatory.
(A) Correct functioning of aged UV cells can be checked as UV test with a higher
supply voltage across the UV cell after controlled shutdown until terminal 3 on.
Connection diagram Measuring circuit for measuring the UV
detector current
12 231
7101a06/1107
GP/SB
R/W
L
L
N
QRA... +
-
br bl rt sw AGQ3...A27
sw bl
(A)
LME...A2
br bl rt sw
AGQ3...A27
sw bl
QRA
7101a07/1107
Measurement made at the UV detector
QRA…
C Electrolytic capacitor 100...470µF; DC 10...25 V bl Blue
M Microammeter Ri max. 5,000Ωbr Brown
QRA... Flame detector gr Grey
GP Gas pressure switch rt Red
SB Safety limit thermostat sw Black
R Control thermostat or pressurestat
W Limit thermostat or pressure switch
Flame supervision
with AGQ3…A27 and
UV detector QRA...
A
ncillary unit
A
GQ3...A27
Legend

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Technical data (cont´d)
Detector current required
(with flame) Perm. detector current (without flame) Possible detector current with flame (typically)
QRC... Min. 70µA Max. 5.5µA Max. 100µA
The values given in the table above only apply under the following conditions:
- Mains voltage AC 120 V / AC 230 V
- Ambient temperature 23°C
Detector current in operation:
- Flame signal instable
- Green LED flashing
Detector current in operation:
- Flame signal stable
- Green LED steady on
QRC... < 45µA > 45µA
The values given in the table above only apply under the following conditions:
- Mains voltage AC 120 V / AC 230 V
- Ambient temperature 23°C
12 LME...
12
sw
bl br
µA DC
+
QRC1...
7101v02/1005
Legend
µA DC DC microammeter with an internal resistance of
Ri = max. 5kΩ
bl Blue
sw Black
br Brown
As an alternative to detector current measurement, the OCI400 / ACS410 diagnostics
tool can be used. In that case, the DC microammeter is not required.
Functions
•Burner control must be reset
•All contacts in the line are closed, request for heat
•No undervoltage
•Air pressure switch «LP» must be in its no-load position
•Fan motor or AGK25 is closed (not at LME4...)
•Flame detector is darkened and there is no extraneous light
•Air pressure switch «LP» must be in its no-load position or DBR1
•CPI in no-load position or DBR2
•Safety shutdown from the operating position takes place should mains voltage drop
below about AC 85 V (at UN= AC 120 V)
•Restart is initiated when mains voltage exceeds about AC 90 V (at UN= AC 120 V)
•Safety shutdown from the operating position takes place should mains voltage drop
below about AC 175 V (at UN= AC 230 V)
•Restart is initiated when mains voltage exceeds about AC 185 V (at UN= AC 230 V)
After no more than 24 hours of continuous operation, the burner control will initiate
automatic controlled shutdown followed by a restart.
If the connections of live conductor (terminal 12) and neutral conductor (terminal 2) are
mixed up, the burner control will initiate lockout at the end of «TSA».
Flame supervision
with QRC...
(only LME23…)
Green LED for opera-
tional status indication
Measuring circuit for
detector current
Preconditions for
burner startup
LME41...
LME44...
Undervoltage
Controlled intermit-
tent operation
Reversed polarity
protection with
ionization

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Functions (cont´d) If lockout occurs, the outputs for the fuel valves, the burner motor and the ignition
equipment will immediately be deactivated (< 1 second).
Cause Response
Mains failure Restart
Voltage below undervoltage threshold Safety shutdown
Voltage above undervoltage threshold Restart
Extraneous light during «t1» Lockout
Extraneous light during «tw» Prevention of startup, lockout after 30 seconds at the latest
LME41.051..., LME41.054..., LME41.092...:
Prevention of startup
No flame at the end of «TSA» LME11…, LME41.051...:
Max. 3 repetitions, followed by lockout at the end of «TSA»
LME2…, LME41.052..., LME41.053..., LME41.054...,
LME41.071..., LME41.09...:
Lockout at the end of «TSA»
Loss of flame during operation LME11…, LME41.051...:
•Establishment of flame at the end of «TSA» →Max. 3 repeti-
tions
•No establishment of flame at the end of «TSA» →Lockout
LME2…:
Lockout
LME41.052..., LME41.053..., LME41.054..., LME41.071...,
LME41.09...:
Repetition
«LP» is welded in working position
LME41...:
None reaction
Prevention of startup, lockout after 65 seconds at the latest
«LP» is welded in no-load position
LME41...:
«LP» is welded in no-load position or no connection
(jumper) between terminal 3 and terminal 11
Lockout max 65 s after completion of «t10»
No air pressure signal after completion «t10»
LME41…:
No air pressure signal after completion «t10» or
breakdown of jumper terminal 3 / terminal 11
Lockout
LME41...:
Safety shutdown / restart
«CPI» contact is open during «tw» Prevention of startup, lockout after 60 seconds at the latest
In the event of lockout, the LME… remains locked and the red signal lamp (LED) will light
up. The burner control can immediately be reset. This state is also maintained in the case
of mains failure.
When lockout occurs, the burner control can immediately be reset. To do this, press the
lockout reset button for about 1 second (< 3 seconds). The LME… can only be reset
when all contacts in the line are closed and when there is no undervoltage.
If no flame is established at the end of «TSA», or if the flame is lost during operation, a
maximum of 3 repetitions per controlled startup can be performed via «R», or else
lockout will be initiated. Counting of repetitions is restarted each time a controlled star-
tup via «R» takes place.
Control sequence in the
event of fault
Resetting the burner
control
Limitation of repetitions
(only LME11…,
LME41.051...)

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Operation, indication, diagnostics
EK
7101z01/0804
Lockout reset button «EK» is the key operating element for resetting
the burner control and for activating / deactivating the diagnostics func-
tions.
LED
7101z02e/0305
Red
Yellow
Green
The multicolor signal lamp (LED) in the lockout reset button is the key
indicating element for visual diagnostics and interface diagnostics.
Both «EK» and LED are located under the transparent cover of the lockout reset but-
ton.
There are 2 diagnostics choices:
1. Visual diagnostics: Operational status indication or diagnostics of the cause of fault
2. Interface diagnostics: With the help of the OCI400 interface adapter and the
ACS410 PC software or flue gas analyzers of different makes
Visual diagnostics:
In normal operation, the different operating states are indicated in the form of color
codes according to the color code table given below.
During startup, status indication takes place according to the following table:
Color code table for multicolor signal lamp (LED)
Status Color code Color
Waiting time «tw», other waiting states ......................................... Off
Ignition phase, ignition controlled zzzzzzFlashing yellow
Operation, flame o.k. .......................................... Green
Operation, flame not o.k. Flashing green
Extraneous light on burner startup SSSSSGreen-red
Undervoltage zSzSzSzSzSYellow-red
Fault, alarm S......................................... Red
Error code output (refer to «Error code
table»)
SSSSFlashing red
Interface diagnostics SSSSSSSSRed flicker light
...... Steady on SRed
Off zYellow
Green
Operation
Operational status
indication
Legend

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Building Technologies CC1N7101en
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Operation, indication, diagnostics (cont´d)
After lockout, the red fault signal lamp LED will remain steady on. In that condition,
visual diagnostics of the cause of fault according to the error code table can be acti-
vated by pressing the lockout reset button for more than 3 seconds. Pressing the reset
button again for at least 3 seconds, interface diagnostics will be activated. Interface
diagnostics works only if the AGK20… lockout reset button extension is not fitted. If, by
accident, interface diagnostics has been activated, in which case the slightly red light of
the signal lamp LED flickers, it can be deactivated by pressing again the lockout reset
button for at least 3 seconds. The instant of switching over is indicated by a yellow light
pulse.
The following sequence activates the diagnostics of the cause of fault:
EK
> 3 s
Flashing
xxxxxxxx
xxxxxxxx
xxxxxxxx
xxxxxxxx
xxxxxxxx
xxxxxxxx
Error code table
EK
> 3 s
Interface diagnostics
PC / analyzer
OCI400
EK
< 3 s
7101z04e/0305
Reset
On
Visual diagnostics
Lockout position Lockout position Lockout position
Error code table
Red blink code of
signal lamp (LED) «AL» at term. 10 Possible cause
2 blinks On No establishment of flame at the end of «TSA»
- Faulty or soiled fuel valves
- Faulty or soiled flame detector
- Poor adjustment of burner, no fuel
- Faulty ignition equipment
3 x blinks On «LP» faulty
- Loss of air pressure signal after «t10»
- «LP» is welded in normal position
4 blinks On Extraneous light when burner startup
5 blinks On Time out «LP»
- «LP» is welded in working position
6 blinks On Free
7 blinks On Too many losses of flame during operation
(limitation of repetitions)
- Faulty or soiled fuel valves
- Faulty or soiled flame detector
- Poor adjustment of burner
8 x blinks On Free
9 blinks On Free
10 blinks Off Wiring error or internal error, output contacts,
other faults
14 blinks On CPI contact not closed
During the time the cause of fault is diagnosed, the control outputs are deactivated
- Burner remains shut down
- External fault indication remains deactivated
- Fault status signal «AL» at terminal 10, according to the error code table
The diagnostics of the cause of fault is quit and the burner switched on again by reset-
ting the burner control. Press the lockout reset button for about 1 second (< 3 seconds).
Diagnostics of the cau-
se of fault

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Building Technologies CC1N7101en
HVAC Products 27.11.2008
Connection diagram and control sequence LME11…
NT RESET
EK
FSV
ION
1
23
M
4
BV1
5
7
Z
10
AL
T
12
R / W
GP
STB
9
7101a24e/0708
pa
6
LP
8
EK2
11
K1
K2/1 K3
K2/2
H
Si
L
N
μC control
SB / R
W / GP
AL
M
LP
BV1
Z
FS
tw t1 t3n
TSA t4
7101d04/0606
t10
EK2
12
10
3
7
4
6
1
8
t3
ABB´ CD
11

17/25
Building Technologies CC1N7101en
HVAC Products 27.11.2008
Connection diagram and control sequence LME21…
NT RESET
EK
FSV
ION
1
23
M
4
BV1
5
BV2
7
Z
10
AL
T
12
R / W
GP
STB
9
7101a22e/0708
pa
6
LP
8
EK2
11
K1
K2/1 K3 K4
K2/2
H
Si
L
N
μC control
SB / R
W / GP
AL
LP
BV1
(LR) BV2
Z
FS
tw t1 t3n
TSA
t4 7101d05/0206
12
10
3
7
4
5
6
1
ABB´ C D
t3
t10
M
11
Application examples only LME11… / LME21… / LME22…
The suitable wiring schemes are merely examples which must be verified in the individual case depending on
application!
Burner without fan and without «LP» Only for burner with fan control via auxiliary contactor «HS» with
«LP»
23 11 6
7101a17/0804
*
AGK25
12 23 11 6
GP/SB
R/W
L
N
M
HS AGK25 LP
7101a18/0804
* Note: Different from LGB...

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Building Technologies CC1N7101en
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Application examples
The suitable wiring schemes are merely examples which must be verified in the individual case depending on
application!
Control of actuators of 2-stage or 2-stage modulating
burners. Controlled prepurging «t1» with low-fire air
volume. Same low-fire actuator position during
startup and operation.
For information about actuators «SA»:
SQN3...: Refer to Data Sheet N7808
SQN7…: Refer to Data Sheet N7804
SQN9...: Refer to Data Sheet N7806
4
12
5
LR SA
Auf / Zu
L
SB/R/W BV1
RV
BV2
7101a09/0705
12 210 83611
97451
HS
0I
NL
AL
EK2 MLP
GP/SB
R/W
ZBV1
(*)
LR
ION
BV2*
(*)
N1267543
b1 b2 B
ab
III
a3
ab
II MS I
ab
a2
ab
IV
A
ab
V
RV
LK
7101a10/0606
12 2 10 83 611 7451
AL
EK2 MLP
GP/
SB
R/W
ZBV1
LR
ION
BV2
HS
NL
0INN125364
LK
SA
IV
II MS I
C3
D
K2
C31
III
R32 R1
V
K1
ab
ab abba
ab
-+
+
9
II
KL
Zu III
LKP
NL t1
IVIII
IV
I
t
IV
Si Si
LME21... LME21...
SQN3...121... / 2-stage control
* Note
With 2-stage modulating burners (with gas regulation
damper «RV»), «BV2» and the dotted connection be-
tween terminals (*) are not required.
SQN91.140... / 2-stage control
1
b1
LP
HS 8
N4
N
I
L
B
a1
A
12
EK2
AL
210 3
5327
6
b2
a2
M
c1
C
R/W
GP/
SB
611 4
ION
51
0
7101a11/0606
8
IIIII IVI
Z
BV1
LR
7
BV2
M
I
KL
zu
NL
LKP
t
I
III III
IV IV
II TSA
t4
t1
Si
LME21...
SQN7...244 / 2-stage control

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Building Technologies CC1N7101en
HVAC Products 27.11.2008
Connection diagram and control sequence LME22… / LME23…
NT RESET
EK
FSV
ION
1
23
M
4
BV1
5
BV2
7
Z
10
AL
T
12
R / W
GP
STB
9
7101a02e/0708
pa
6
LP
8
EK2
11
K1
K2/1 K3 K4
K2/2
H
Si
SA
L
N
QRC
br bl sw
12
12
Nur LME23...
K5
μC control
SB / R
W / GP
AL
LP
SA
BV1
(LR) BV2
Z
FS
tw t1 t3n
TSA t4 7101d02/0606
t11 t12
EK2
12
10
3
7
4
5
6
1
8
ABB´ C D
9
t3
t10
LK
M
I
11

20/25
Building Technologies CC1N7101en
HVAC Products 27.11.2008
Application examples
The suitable wiring schemes are merely examples which must be verified in the individual case depending on
application!
Control of actuators of 2-stage or 2-stage modulating burn-
ers. Controlled prepurging «t1» with nominal load air volume.
For information about actuators «SA»:
SQN3...: Refer to Data Sheet N7808
SQN7...: Refer to Data Sheet N7804
SQN9...: Refer to Data Sheet N7806
4
9
5
LR SA
L
SB/R/W BV1
RV
BV2
7101a13/0804
12
12 2 10 83611 95741
GP/SB
R/W AL
EK2
M
LP LR ZBV1
ION
HS
0I
NL
6810
21
379
RV
LK
SA
R1
K2
R3
C2 K1
+
D
-+
R2
C1
IMS
C3 III
II
KL
Zu III
LKP
NL t1
III t
I
II
t4
TSA
12 210 8 3611
974 51
HS
0I
NL
EK2
M
LP
GP
R/W
Z
BV1
LR
ION
AL
N18 275 6349
Bb1 b2
Aa1 a2
IMII III V 5
LK
RV
1)
7101a14/0606
S1)
BV2
2)
SB
**
R3
R1
Si
Si
LME22... LME22...
SQN3...151... or SQN3...251...
* Note
With 2-stage modulating burners (with gas regulation
damper «RV»), «BV2» and the dotted connection be-
tween terminals (*) are not required.
SQN90.220... / 2-stage modulating control
LKP
zu
KL
NL
t
III
III
IVIV
I
I
II t1 TSA
t4
N
I
HS
L
R/W
GP/SB
12
EK2
38
Z
LR
5
ION
BV1
BV2
0
7101a15/0606
B
CA
a1
b1
c1
b2
a2
M
7
9
102
N54132867
IIIII IVI
611
AL
4 1
M
LP
4
N15
N
I
HS
L
A
b1
a1
R/W
GP/SB
12
AL
EK2
3
8
3268 7
b2
a2
M
B
Z
LR
ION
BV1
41
0
12
10 957
BV2
IIIIIIIV
2611
LP
M
Si Si
LME22... LME22...
SQN7...454 / 2-stage control
1 wire control SQN7...424 / 2-stage control
2 wire control