8 | Technical Characteristics and Dimensions
Servo valve (normally open)
Main valve (normally closed)
Flue gas safety device
This gas heater is equipped with automatic electronic
ignition which simplifies its operation.
B To do so, just turn on the switch ( Fig. 6).
After this procedure, automatic ignition occurs
whenever a hot water tap is opened. First, the pilot
burner is lit and approximately four seconds afterwards
the main burner. The pilot burner flame is then
extinguished after a short period of time.
This is a way of saving a great amount of energy as the
pilot burner only operates for the minimum necessary
time to ignite the main burner, in contrast to
conventional systems which operate permanently.
6 720 648 592 (2011/06)
LED indicator for battery charge level
LED indicator for burner status
Air in the gas supply pipe when the heater is
started up may cause ignition to fail.
If this happens:
B Close and open the hot water tap to repeat the
ignition process until all the air has been purged.