Valeo Thermo E+ 120, Workshop Manual

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306
Thermo E+ 120/200/320 3 Assemblies and components
3.1.5 Electronic ignition unit
In the electronic ignition unit the high voltage required for
ignition of the fuel-air mixture is induced.
For this it receives voltage pulses in a certain frequency
from the control device.
Ignition is triggered by a high voltage spark, which is
initiated on the ignition electrodes.
ATTENTION:
There are two different electronic ignition units. The
wrong use can lead to the failure of the heater, so
please pay attention to the correct use:
- use 11121236_ with the electronic control unit
11121234_ (12V) only
- use 11121237_ with the electronic control unit
11121235_ (24V) only
No voltage of any kind or duration may be applied to
the ignition unit for test purposes. It may only be
operated and tested together with the associated
control device (component test).
Explosion hazard!
Warning!
Fig. 306 Electronic ignition unit
Ignition electrodes
Safety label
Attention!
Explosion
hazard!
See
Information!
ATTENTION:
There is the danger of confusion with
the port of the nozzle block preheater
when plug in (see
Fig. 303 ).