Normal operation
Installation, use and maintenance manual – G gas unit heater
37
6
6.4.1.2
Modulating automatic standard operation
1.
Press the
key of the chronothermostat (Figure
6.1
p. 29) to select the winter operating mode (heat-
ing): this operation is identified by the radiator symbol
on the chronothermostat display at the top left.
2.
Program the day, time, temperatures and weekly and
daily profiles of the chronothermostat as specified in
the relevant paragraphs.
3.
Using the
button of the chronothermostat
(Figure 6.1
p. 29) select the type of operation: auto-
matic (
) (in this mode the operation of the gas unit
heater is regulated by the profiles defined by the user).
4.
By selecting the flow rate level at 0 (
and
keys),
the heat output and the air flow rate will modulate
continuously according to an internal algorithm and
to the temperature difference between the room
setpoint (required temperature) and the detected
temperature.
6.4.1.3
Modulating manual standard operation
1.
Press the
key of the chronothermostat (Figure
6.1
p. 29) to select the winter operating mode (heat-
ing): this operation is identified by the radiator symbol
on the chronothermostat display at the top left.
2.
Using the
button of the chronothermostat (Figure
6.1
p. 29) select the type of operation: manual (
) (in this mode the operation of the gas unit heater is
managed manually by the user).
3.
Use the UP
and DOWN
keys to select the
desired room temperature. If you want to use the
set temperature, reduced or comfort (Paragraph
6.3.3
p. 29), select the desired setting using the
key.
4.
By selecting the flow rate level at 0 (
and
keys),
the heat output and the air flow rate will modulate
continuously according to an internal algorithm and
to the temperature difference between the room
setpoint (required temperature) and the detected
temperature.
6.4.1.4
Fixed automatic standard operation
1.
Press the
key of the chronothermostat (Figure
6.1
p. 29) to select the winter operating mode (heat-
ing): this operation is identified by the radiator symbol
on the chronothermostat display at the top left.
2.
Program the day, time, temperatures and weekly and
daily profiles of the chronothermostat as specified in
the relevant paragraphs.
3.
Using the
button of the chronothermostat
(Figure 6.1
p. 29) select the type of operation: auto-
matic (
) (in this mode the operation of the gas unit
heater is regulated by the profiles defined by the user).
4.
By selecting the flow rate level at 1, 2 or 3 (
and
keys), the gas unit heater will have fixed operation at
the heat output/flow rate level set (1 = low, 2 = medi-
um, 3 = maximum). The gas unit heater will operate
until the required temperature is achieved without
any modulation.
Fixed ventilation (with constant ventilation at maximum
speed)
1.
By selecting the flow rate level at 4 (
and
keys),
the air flow rate remains constant at maximum speed
and the heat output will modulate continuously ac-
cording to an internal algorithm and to the tempera-
ture difference between the room setpoint (required
temperature) and the detected temperature.
6.4.1.5
Fixed manual standard operation
1.
Press the
key of the chronothermostat (Figure
6.1
p. 29) to select the winter operating mode (heat-
ing): this operation is identified by the radiator symbol
on the chronothermostat display at the top left.
2.
Using the
button of the chronothermostat (Figure
6.1
p. 29) select the type of operation: manual (
) (in this mode the operation of the gas unit heater is
managed manually by the user).
3.
Use the UP
and DOWN
keys to select the
desired room temperature. If you want to use the
set temperature, reduced or comfort (Paragraph
6.3.3
p. 29), select the desired setting using the
key.
4.
By selecting the flow rate level at 1, 2 or 3 (
and
keys), the gas unit heater will have fixed operation at
the heat output/flow rate level set (1 = low, 2 = medi-
um, 3 = maximum). The gas unit heater will operate
until the required temperature is achieved without
any modulation.
Fixed ventilation (with constant ventilation at maximum
speed)
1.
By selecting the flow rate level at 4 (
and
keys),
the air flow rate remains constant at maximum speed
and the heat output will modulate continuously ac-
cording to an internal algorithm and to the tempera-
ture difference between the room setpoint (required
temperature) and the detected temperature.
6.4.1.6
Switching the appliance off
1.
To turn off the gas unit heater, select the off mode by
pressing the FUNCT
key: the
icon will appear
on the display. This way the gas unit heater is in stand-
by mode: only the antifreeze function remains active,
if not deactivated from the INFO menu (see "NO FRX"
item of Table 6.3
It is absolutely necessary to avoid, as it is harmful
to the appliance, switching it off by disconnecting
the electrical power supply, because doing so will
cause the immediate shutdown of the fans and the
intervention of the limit thermostat, which must
be reset manually.
6.4.1.7
Summer mode (ventilation only)
The ventilation only operation can be with manual venti-
lation or with automatic ventilation (Figure 6.10
1.
Close the gas valve and check power supply availability
