3.3 Control panel
The control panel is located in the lower
left of the front panel, refer to instructions
provided with the control panel.
3.3.1 Limit safety thermostat
The appliance is equipped with a MANUAL
RESET LIMIT safety thermostat with the
element positioned on the air supply. It func-
tions to stop the burner if the air becomes
too hot. It can be restored by pushing the
restore button, after removing the causes
that have triggered it.
3.3.2 Fan thermostat
The appliance is equipped with a fan ther-
mostat with the element positioned on the
air supply.
Activating the fan max. 60 seconds after the
burner has started and it stops it approx. 4
minutes after it has stopped. Thus, prevent-
ing cold air from being released when the
heater is activated. The thermal energy
accumulated by the heat exchanger will be
disposed of before the fan stops.
3.3.2.1 TR safety thermostat
The appliance is equipped with an auto-
matic reset TR safety thermostat with the
element positioned on the air supply. It has
the function of stopping the burner if the air
becomes overheated. Restoring is automatic.
3.4 Controls
For its operation and programming, refer
to the dedicated instructions, which are
supplied together with the appliance.
LIMIT thermostat reset button:
Located on the LIMIT thermostat's interface,
the button will reset the operation of the
burner after it has stopped due to over-
heating. Before resetting the device please
verify that the issues have been resolved
before continuing operation. If confused,
please contact manufacturer for further
clarification.
3.4.1 Ventilation/Heating
Operating cycle in fan only mode:
• Power the appliance
• Turn on the unit in fan only mode
At this point, the fan unit will operate and
air at ambient temperature will be released.
Operating cycle in heating mode:
• Power the appliance
• Set the room thermostat to desired
temperature
• Turn on the unit on "heating" mode.
At this point the burner is powered elec-
trically, after the pre-purge function of the
combustion chamber, the flame will begin
to ignite. About one minute after the flame
is ignited, the fan unit starts and warm air
will be released.
Once the temperature set on the room ther-
mostat has been reached, the burner stops
and after approx. 4 minutes the fan unit
will also stop.
The entire cycle is repeated automatically
each time the temperature drops below the
value set on the room thermostat.
3.5 Fan speed control
Models 60–300
For all the installations requiring changes
of static pressure, the air flow should be
adjusted to the nominal value accordingly.
The pulley installed on the fan motor(s) is
of the adjustable diameter type.
The heaters ordinarily come with a median
transmission ratio, so a nominal value can
be obtained in installations, as standard.
Begin by checking (when the burner is
operating on the nominal thermal output)
the temperature rise between the air outlet
and inlet temperature and compare with
the specifications of Table 2 on page 9.
Figure 21.
Control panel
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