8
Heating system temperature
adjustment
It is possible to
control the temperature of the
FIREX
boiler system water by changing
PARAMETER 0
The P0 parameter is the only parameter the user is able
to modify; the remaining parameters may exclusively be
changed by an After Sale Service Centre.
Temperature is adjusted between a
minimum of 70°C
and a maximum of 85°C.
See previous point
"Programming procedure".
Lighting the boiler
The top door is open to load wood and the
fan runs at full speed.
Light the wood as described in Chap. 6.3.
With lower boiler door closed, upper door open and op-
erating fan after lighting the wood, the upper door closes
and fan is switched off.
To activate the actual combustion cycle just press the
on/off key for one second: The fan starts and goes
to nominal speed set in parameter P13.
The board displays the message “Wood comb”. The boil
-
er on or off status is brought about by the flue gas temper
-
ature reached in a certain period of time.
When the on/off key is pressed a timer is activated, the
time of which is set in parameter P11. During this time the
flue gas temperature must reach the value set in parame
-
ter P14 (minimum flue gas temperature for boiler ignition
detection), upon reaching it the boiler continues operating
regularly.
If however, when the set time has elapsed the flue gas
temperature has not reached the value set in P14, the
boiler fan switches off and the combustion cycle stops.
This may depend on the amount of fuel loaded or adjust-
ment of primary and secondary boiler air. Always check
the flame is present during the ignition phase through the
flame sight glass located in the lower door of the boiler.
Pump operation is connected to the boiler water temper-
ature and does not follow the flue gas temperature figure,
therefore the case may occur where the boiler is in stand-
by and the pumps are operating.
Heating system pressure
For systems with open expansion vessel,
pressure does not need to be restored as
it is done automatically by the level switch
placed inside the vessel.
If the safety device of the boiler trips repeatedly, do not try
to restore operation of the boiler on your own, but contact
an After Sale Service Centre.
When the water temperature in the boiler goes below the
figure set in parameter P1 the pumps stop.
