26
Regulation and servicing
for the technician
ELECTRONIC settings
The “HABITAT 2” models are equipped with a digital PCB that can automatically manage ignition,
slow opening, modulation and output in the heating function.
Disconnect the power supply before approaching the jumpers. Restore the power
supply only after you have closed the back cover of the control panel.
Any intervention on jumpers, if made when the
electrical supply is present, don’t have effect or
have unpredictable effets, and eventually
damage the PCB.
It is possible to modify the following parameters:
Re-ignition delay - jumper CM1
Normal delay
(factory set)
– leave the jumper
on
TIMER 3’
: in the heating function, when
the set temperature is reached, the burner
will switch off and could re-ignite, in case of
a new heating request, only after a delay of
3 minutes.
Zero delay
– move the jumper to
TIMER O
: in
the heating function, when the set tempera-
ture is reached, the burner will switch off and
could re-ignite immediately in case of a new
heating request (e.g. for systems with fan coil
units).
Type of gas - jumper CM2
Attention: gas type changing requires other
regulations and operations on the burner (see
“Changing gas type” section) and it is not limited
to jumper moving.
Natural gas (G20)
– jumper on
MET
Buthane (G30)
or
Propane (G31)
– jumper on
GPL
Factory set depends from the type of gas for which the gas boiler is arranged.
Pump operation – jumper to be cut JPF1
Normal operation
(factory set) –
do not cut
the jumper
Excluded operation – cut
the jumper. During the heating function, the pump is not activated.
Use this function with external pumps only. The pump will be activated in all other
circumstances, e.g. for post-circulation (if present) or for anti-freezing or anti-lockout
functions.
