Siemens LAL2.25 User Manual

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Building Technologies Division CC1N7153en
21.09.2016
Supplementary documentation
Product type Type of documentation Documentation number
LOK16 (For burner controls used in
connection with burners for continuous
operation)
Data Sheet N7785
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
 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 (applying a force of no more than 10
N), without using any tools or pointed objects
 Do not press the lockout reset button on the unit or the remote reset button (input
21) for more than 10 seconds since this will damage the lockout relay in 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
 For safety reasons – self-test of the flame supervision circuit, etc. – at least one
controlled shutdown must take place every 24 hours
Mounting notes
 Ensure that the relevant safety regulations are complied with
 Connect the earthing lug inside the terminal base to burner ground using a screw
with a lockwasher

Note!
In applications involving air heaters (WLE), or in the case of oil burners with a
maximum throughput of >30 kW/h, removing wire link B is not permitted.
Installation notes
 Always run high-voltage ignition cables separately, with the greatest possible
distance to the unit and to other cables
 Live and neutral conductors must not be mixed up
 Install switches, fuses, earthing, etc., in compliance with local regulations
 Make certain that the maximum permissible current rating of the connection
terminals will not be exceeded
 The insulation on internal wiring which is subjected to the mains voltage must
withstand the electrical stress occurring during correct use

Siemens LAL2.25 Specifications

General

Brand	Siemens
Model	LAL2.25
Category	Control Unit
Language	English