Siemens LFL1.148 User manual

CC1N7454en
20.11.2017
Building Technologies Division
7454
Gas Burner Control LFL1.148
Gas burner control
for atmospheric gas burners in intermittent operation
flame supervision with ionization probe
The LFL1.148 and this Data Sheet are intended for use by OEMs which integrate
the burner controls in their products!
Use
For the supervision of 1- or 2-stage atmospheric gas burners
For use with medium- to high-capacity burners
For intermittent operation (at least 1 controlled shutdown in 24 hours)
The gas burner has a connection facility for an auxiliary fan or flue gas fan (e.g. for
condensing boilers)
Flame supervision is ensured by means of an ionization probe, 1 electrode is used for the
first stage and 1 for the second stage. Changeover takes place automatically after
release of the second fuel valve.

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Supplementary documentation
Product type Type of documentation Documentation number
LFL... Data sheet N7451
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
For safety reasons – self-test of the flame supervision circuit, etc. – at least
one controlled shutdown must take place every 24 hours
Before performing any wiring changes in the connection area of the LFL1.148,
completely isolate the unit from the mains supply (all-polar disconnection)
Ensure protection against electric shock hazard by providing adequate protection for
the burner control’s connection terminals
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
Press the lockout reset button only manually (do not apply a force of more than 10 N)
without using any tools or pointed objects
Do not press the lockout reset button on the unit or the remote lockout reset button
for more than 10 seconds since this would damage the lockout relay inside the unit
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
Mounting notes
Ensure that the relevant national safety regulations are complied with
Connect the earthing lug inside the terminal base to burner ground using a screw
with a lockwasher or similar
Installation notes
Always run the high-voltage ignition cables separately while observing the greatest
possible distance to the unit and to other cables
Do not mix up live and neutral conductors
Electrical connection of the ionization probe
It is important to achieve practically disturbance- and loss-free signal transmission:
Never run the ionization cable together with other cables
– Line capacitance reduces the magnitude of the flame signal
– Use a separate cable of low capacitance
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)

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Commissioning notes
Prior to commissioning, check to ensure that wiring is in an orderly state
When commissioning the plant or when doing maintenance work, make the following
safety checks:
Safety check to be carried out Anticipated response
a) Burner startup with ionization cable
disconnected
Lockout at the end of safety time
(TSA)
Standards and certificates
Applied directives:
Low-voltage directive 2014/35/EC
Directive for gas-fired appliances 2009/142/EC
Directive for pressure devices 2014/68/EC
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
Safety and control devices for gas burners and gas burning
appliances
DIN EN 13611
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 LFL1.148 and the AGM 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
Certified complete with plug-in base:

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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 EN 298 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
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
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 mechanical design of the LFL1.148 corresponds to that of the standard units of the
LFL range (refer to Data Sheet N7451).

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Type summary
The type reference given below apply to the LFL1.148 without plug-in base and without
flame detector. For ordering information for plug-in bases and other accessories, see
Accessories.
Gas burner control, without plug-in base LFL1.148
Article no.: BPZ:LFL1.148
Plug-in base not included in the delivery, must be ordered as a separate item!
Accessories (to be ordered separately)
Flame detector Ionization probe
To be supplied by thirds
Connection accessories
for medium-capacity
burner controls
Plug-in base AGM410490550 with Pg11 threads for cable
entry glands.
Article no.: BPZ:AGM410490550
Refer to Data Sheet N7230
Plug-in base AGM14.1 with M16 threads for cable entry
glands.
Article no.: BPZ:AGM14.1
Refer to Data Sheet N7230