Normal operation
Installation, use and maintenance manual – G gas unit heater
29
6
Checks before switching on
Before switching on the appliance, ensue that:
gas valve open
appliance electrical power supply (main switch ON)
connection and any necessary power supply of the
control device
After a long period of unit inactivity or at the first
start-up, it may be necessary to repeat the ignition
operation due to the presence of air in the gas
piping.
6.3
CHRONOTHERMOSTAT
Figure 6.1
Digital chronothermostat
UPLEV
DOWNLEV
E/I
UP
DOWN
OK
IP
TIME TEMP FUNCT
To make the settings described in the following
paragraphs, the chronothermostat must be con-
nected to the electrical panel of the gas unit heater
and the gas unit heater must be electrically pow-
ered.
6.3.1
Functions of the chronothermostat keys
The keys on the chronothermostat have the following
functions:
▶
UPLEV (
) and DOWNLEV (
) keys: allow to modi-
fy the level of the heat output/air flow from level 0 to
level 3 (level 1 minimum flow rate, level 2 average flow
rate, level 3 maximum flow rate; by selecting level 0
during winter operation the flow rate will modulate
automatically, by selecting level 0 during summer op-
eration the fan will be turned off).
▶
E/I (
) key: allows you to select winter (the radiator
symbol appears on the display) or summer (the burner
is off and only the fan is running) operation.
▶
UP (
) and DOWN (
) keys: allow you to change
the room setpoint temperature; the increase is 0,1 °C.
Keeping one of the two keys pressed results in a faster
and continuous change.
▶
OK (
) key: displays the current room temperature,
the required room temperature, confirms the set data.
▶
IP (
) key: to enter the programming mode and to
access the INFO menu as specified below:
PROG programming mode: briefly press the
key, the display will show the PROG sliding text
for a few seconds; to exit the programming mode,
briefly press the
key again; the display will
show the RUN sliding text for a few seconds.
INFO menu: press the
key for at least 3 seconds,
the display will show the sliding INFO text for a few
seconds; to exit the INFO menu, briefly press the
key again, the display will show the sliding RUN
text for a few seconds.
▶
TIME (
) key: allows you to set the timed operations
(for further information see Paragraph 6.3.7
p. 32).
▶
TEMP (
) key: allows you to select the comfort tem-
perature or the reduced temperature.
▶
FUNCT (
) key: allows you to set the automatic,
manual or off operation. When the off operation is set,
the gas unit heater is in standby mode: only the anti-
freeze function remains active (if it has not been deac-
tivated from the INFO menu - for further information
see Paragraph 6.3.9
The functions of the keys described above refer to
standard operation. The keys change function de-
pending on the window displayed.
6.3.2
Set the day and time on the
chronothermostat
To set the current day and time, proceed as follows:
1.
Enter programming mode by shortly pressing the
key: PROG will appear on the display for a few seconds
and then the time and day of the week will appear
with the DAY icon on.
2.
With the
and
keys you can change the se-
lected value (which is blinking). To switch between the
values, simply press either the
or the
key.
3.
After having set the current date and time, press the
key to exit the programming mode, the display
will show for a few seconds the RUN sliding text.
6.3.3
Set the comfort, reduced and antifreeze
temperatures on the chronothermostat
1.
Enter programming mode by shortly pressing the
key.
2.
Press the
key repeatedly to select the tempera-
ture to be set.
3.
On the lower left of the display, COMFR will appear for
programming the comfort temperature, ECONM will
appear for programming the reduced temperature
and OFFºC will appear for programming the antifreeze
temperature (Figure 6.2
4.
Use the
and
keys to set the desired
temperature.
The value of the comfort temperature must be be-
tween 5,0 and 30,0 ºC (in steps of 0,1 ºC).
The reduced temperature value must be between
5,0 and 25,0 ºC (in steps of 0,1 ºC).
