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Supplementary documentation
Product type
LFL...
Warning notes
Mounting notes
Installation notes
Electrical connection of the ionization probe
2/11
Building Technologies Division
Type of documentation
Data sheet
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
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
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
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)
Documentation number
N7451
CC1N7454en
20.11.2017
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