Siemens LMO64 Series User manual

CC1N7138en
18.05.2016
Building Technologies Division
7138
Oil Burner Controls LMO64...
Microcontroller-based oil burner controls for the startup, supervision and control
of forced draft oil burners in intermittent operation. Maximum oil throughput up
to 30 kg/h.
The LMO64... and this Data Sheet are intended for use by OEMs which integrate
the burner controls in their products.
Use, features The LMO64... burner controls are designed for the startup and supervision of 1-stage
forced draft oil burners in intermittent operation. Yellow-burning flames are supervised
with photo resistive detectors QRB..., blue-burning flames with blue-flame detectors
QRC...
Applications in accordance with EN 267: Automatic forced draft burners for liquid
fuels
Type-tested and approved in accordance with DIN EN 298
Undervoltage detection
Electrical remote reset
Bridging contact for oil preheater
Monitoring of time for oil preheater
Accurate and reproducible program sequence through digital signal handling
Controlled intermittent operation after 24 hours of continuous operation
Limitation of the number of repetitions
Multicolor indication of fault and status messages
Postpurge function for clearing the combustion chamber after burner operation
Use
General features
Specific features

2/16
Building Technologies Division CC1N7138de
18.05.2016
Supplementary documentation
Product type Type of documentation Documentation number
LMO... Environmental declaration E7130
ACS410 Software documentation J7352
OCI400 Data sheet N7614
QRB1... Data sheet N7714
QRC1... Data sheet N7716
Warning notes
To avoid injury to persons, damage to property or the environment, the following
warning notes must be observed!
Do not 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. If not observed, there will be a risk of
electric shock
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». If not observed, the safety functions are no
longer ensured and there will be a risk of electric shock
Press the lockout reset button / operation button of the LMO64 only manually
(applying a force of no more than 10 N), without using any tools or pointed objects.
If not observed, the safety functions are no longer ensured and there will be a risk
of electric shock
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. If not observed, the safety
functions are no longer ensured and there will be a risk of electric shock
Mounting notes Ensure that the relevant national safety regulations are complied with.
Installation notes
Always run the high-voltage ignition cables separately while observing the greatest
possible distances to the unit and to other cables
Install switches, fuses, earthing, etc., in compliance with local regulations
Ensure that the maximum permissible amperages will not be exceeded (refer to
«Technical data»)
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 LMO64... must
never be plugged in
Do not mix up live and neutral conductors
Attention!
To ensure that the LMO64... does not get mixed up with other types of burner
controls, it may only be used in connection with the grey AGK11.6 plug-in base.
In particular, it must be made certain that the line for the control thermostat or
pressurestat «R» is picked up after the limit thermostat and pressure switch
«W» and safety limit thermostat «SB», to be connected to terminal 7 (refer to
«Connection diagram»).

3/16
Building Technologies Division CC1N7138de
18.05.2016
Electrical connection of the flame detector
It is important to achieve practically disturbance- and loss-free signal transmission:
Never run the detector cable together with other cables
– Line capacitance reduces the magnitude of the flame signal
– Use a separate cable
Note the maximum permissible detector cable lengths (refer to «Technical data»)
Earth the burner in compliance with the relevant regulations; earthing the boiler
alone does not suffice
Commissioning notes
When commissioning the plant or when doing maintenance work, make the following
safety checks:
Safety check Anticipated response
a) Burner startup with flame detector darkened Non-alterable lockout at the end
of the safety time (TSA)
b) Burner startup with flame detector ex-posed to
extraneous light Non-alterable lockout within 40 seconds
c) Burner operation with simulated flame failure;
for that purpose, darken the flame detector
during operation and maintain that status
Repetition followed by the non-
alterable lockout at the end of
safety time (TSA)

4/16
Building Technologies Division CC1N7138de
18.05.2016
Standards and certificates
Applied directives:
Low-voltage directive 2014/35/EC
Directive for pressure devices 97/23/EC and
2014/68/EC (2016-07-16)
Electromagnetic compatibility EMC
(immunity) *) 2014/30/EC
*) The compliance with EMC emission requirements must be checked after the burner control is
installed in equipment
Compliance with the regulations of the applied directives is verified by the adherence to
the following standards / regulations:
Automatic burner control systems for burners and appliances
burning gaseous or liquid fuels DIN EN 298
Automatic electrical controls for household and similar use
Part 2-5:
Particular requirements for automatic electrical burner control
systems
DIN EN 60730-2-5
The relevant valid edition of the standards can be found in the declaration of
conformity!
Note on DIN EN 60335-2-102
Household and similar electrical appliances - Safety - Part 2-102:
Particular requirements for gas, oil and solid-fuel burning appliances having electrical
connections. The electrical connections of the LMO and the AGK11 comply with the
requirements of EN 60335-2-102.
EAC Conformity mark (Eurasian Conformity mark)
ISO 9001:2008
ISO 14001:2004
OHSAS 18001:2007
China RoHS
Hazardous substances table:
http://www.siemens.com/download?A6V10883536
Service notes
The service adapters can only be used for a short time. They may only be used in
supervised operation by qualified staff.
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 EN 298.
A summary of the conditions has been published by the European Control
Manufacturers Association (Afecor) (www.afecor.org).
The designed lifetime is based on use of the burner controls according to the
manufacturer’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
replaced by authorized personnel.
* The designed lifetime is not the warranty time specified in the Terms of Delivery

5/16
Building Technologies Division CC1N7138de
18.05.2016
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
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.
Burner controls type LMO64... and AGK11.6 plug-in bases are silver-grey (RAL7001).
The housing accommodates the
- microcontroller, which controls the program sequence, and the print relays for load
control,
- electronic flame signal amplifier,
- lockout reset button with its integrated multicolor signal lamp for status and fault
messages and the socket for connecting the OCI400 interface
- Multicolor display of status and fault messages
- Transmission of status and fault messages as well as detailed service information
by additional OCI400 interface and PC software ACS410
Display and diagnostics

6/16
Building Technologies Division CC1N7138de
18.05.2016
Type summary
Article no. Type reference Mains
voltage Fuel valve stages Burner capacity ¹) Remote reset Times
tw
max. t1 / t1´ min. TSA max. t3 min. t3n max. t8 max.
BPZ:LMO64.300C2 LMO64.300C2 AC 230 V 1 <30 kg/h 2.5 s 15 / 16 s 10 s 15 s 10 s 20 s
BPZ:LMO64.301C2 LMO64.301C2 AC 230 V 1 <30 kg/h 2.5 s 15 / 16 s 10 s 15 s 10 s 90 s
BPZ:LMO64.302C2 * LMO64.302C2 * AC 230 V 1 <30 kg/h 2.5 s 15 / 16 s 10 s 15 s 3 s 20 s
* On request only!
Legend
TSA Ignition safety time
tw Waiting time
t1 Prepurge time
t1´ Purge time
t3 Preignition time
t3n Postignition time
t8 Postpurge time
¹) Bridging contact for oil preheater

CC1N7138en
18.05.2016
Building Technologies Division
Test adapter (to be ordered separately)
Test adapter KF8833
For checking the functions of burner controls on the
burner
With signal lamps for program indication
With one pair of jacks for measuring the flame detector
current
Test adapter KF8840
For checking the functions of burner controls on the
burner
With signal lamps for program indication
With on / off switch for simulating the flame signal
With holes for checking the control voltages at the tabs of
the burner control
With one pair of jacks for measuring the flame detector’s
resistance
Test adapter KF8885
For checking the functions of burner controls on the
burner
With switch for manual startup of the burner
With switch for simulating the oil preheater’s release
contact
With 2 pairs of jacks for measuring the flame detector
current
See operating instructions B7986

2/16
Building Technologies Division CC1N7138en
18.05.2016
Accessories (to be ordered separately)
Connection accessories
for small burner controls Plug-in base AGK11.6
Plug-in base grey for connecting the LMO to burner plant
Refer to Data Sheet N7201
Cable holders AGK66…
For plug-in base AGK11.
Refer to Data Sheet N7201
Cable holders AGK65…
For plug-in base AGK11.
Refer to Data Sheet N7201
Flame detectors
Photo resistive detectors QRB1...
Refer to Data Sheet N7714
Blue-flame detectors QRC1...
Refer to Data Sheet N7716
Frontal illumination
Lateral illumination
Service-Tools Optical Interface OCI400
Optical interface between burner control and PC
Facilitates viewing and recording setting parameters on
site in connection with the ACS410 PC software
Refer to Data Sheet N7614
PC software ACS410
PC software for setting the parameters and for visualizing the
burner controls
Refer to Software Documentation J7352

3/16
Building Technologies Division CC1N7138en
18.05.2016
Technical data Mains voltage
A
C 230 V +10 % / -15 %
Mains frequency 50...60 Hz ±6 %
External primary fuse (Si) 6.3 A (slow)
Power consumption 12 VA
Perm. mounting position Optional
Weight
A
pprox. 200 g
Safety class I (burner control with plug-in base)
Degree of protection IP40 (to be ensured through mounting)
Perm. cable lengths
- from terminal 7 to «R» Max. 3 m at a line capacitance of 100 pF/m Max. 20 m at 100 pF/m
Detector cable laid separately Max. 10 m
Remote reset laid separately Max. 20 m
Perm. amperage at cos 0.6 LMO64...
Terminal 1 Max. 5 A
Terminals 3 and 8 Max. 3 A
Terminals 4, 5, 6 and 10 Max. 1 A
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 60721-3-2
Climatic conditions Class 2K2
Mechanical conditions Class 2M2
Temperature range -20...+60 °C
Humidity <95 % r.h.
Operation DIN EN 60721-3-3
Climatic conditions Class 3K3
Mechanical conditions Class 3M3
Temperature range -5...+60 °C
Humidity <95 % r.h.
Installation altitude Max. 2,000 m above sea level
Attention!
Condensation, formation of ice and ingress of water are not permitted!
If not observed, the safety functions are no longer ensured and there will be a
risk of electric shock.
General unit data
Environmental
conditions

4/16
Building Technologies Division CC1N7138en
18.05.2016
Technical data (cont´d)
Required detector current
(with flame) Perm. detector current (without flame) Possible detector current with flame (typically)
QRB... ¹) Min. 45 µA Max. 5.5 µA Max. 100 µA
QRC... ¹) Min. 70 µA Max. 5.5 µA Max. 100 µA
¹) The values given in the table above only apply under the following conditions:
- Mains voltage depending on execution AC 230 V
- Ambient temperature 23 °C
Detector current in operation:
- Flame signal instable
- Green signal lamp (LED) flashing
Detector current in operation:
- Flame signal stable
- Green signal lamp (LED) steady on
QRB... ¹) <45 µA >45 µA
QRC... ¹) <45 µA >45 µA
¹) The values given in the table above only apply under the following conditions:
- Mains voltage depending on execution AC 230 V
- Ambient temperature 23 °C
QRB... QRC...
12
11 LMO...
bl
µA DC
+
QRB...
7138v01/0602
sw 12
11 LMO... 1
swbl br
µA DC
+
QRC1...
7138v02/0602
Legend
µA DC DC microammeter
with an internal
resistance of
Ri = max. 5 k
bl Blue
sw Black
br Brown
As an alternative to detector current measurement, the OCI400 interface with ACS410
PC software can be used. In that case, connection of the DC microammeter is not
required.
Flame supervision with
QRB... and QRC...
Green signal lamp
(LED) for indication of
operating state
Measurement circuit for
detector current