Normal operation
34
6
steps 1, 2 and 3, setting the value to 0.
6.3.9
Chronothermostat information window
The INFO menu contains 8 parameters that provide in-
formation about the operating mode of the unit; some
of these parameters can be modified and allow you to
customize the operating mode of the installed unit.
1.
Enter the INFO menu by pressing the
key for more
than 3 seconds: INFO will appear on the display.
2.
Pressing the
key it is possible to display the infor-
mation windows shown in Table 6.3
Table 6.3
Information windows
Text
Editable
parameter
Description
Setting
Default
NΓ C1
NO
Delivery air temperature display.
-
-
NΓ C2
NO
Flue gas temperature display.
-
-
SP %
NO
The value, calculated directly by the electronic board, indicates the
instantaneous percentage of the modulation range of the power actually
delivered by the unit (1).
-
-
SP MX %
YES (3)
This parameter allows you to change the modulation range of the unit
to change the maximum limit (maximum heat output delivered by the
unit) (1).
By setting a value equal to 50%, the gas unit heater will operate from the
value 0 to 50% of the modulation range between the maximum (100%)
and the minimum expected (0%).
It can be particularly useful to set a working percentage of less than 100
when the system is oversized.
from 100% to 0%
100%
RPM
NO
Blower RPM display.
-
-
KEY
YES (3)
Enables or disables the keypad lock of the chronothermostat.
0. lock disabled
1. lock enabled
0
BUILD
YES (3)
Room size parameter.
It is recommended to set the value 1 if the room to be heated is small;
the value 10 if the room to be heated is large.
from 0 to 10
5
NO FRX
YES (3)
Activates or deactivates the antifreeze function (2).
0. antifreeze disa-
bled
1. antifreeze
enabled
1
(1) To understand the meaning of heat output or modulation percentage, refer to the specific clarification note below.
(2) The antifreeze function is the function that allows the gas unit heater to be activated if the temperature of the room in which it is installed drops below the set anti-
freeze temperature (for further details see Paragraph 6.3.3
p. 29). If the value set for the antifreeze temperature is higher than the setpoint value set, it is this value
that governs the turning on of the unit.
(3) To edit use the
and/or
keys,
key to confirm.
The percentage of heat output is the percentage of
the modulation range between the rated and min-
imum power (see Table 1.2
p. 13). For example, if
the SP MX % parameter (maximum limit of the heat
output) is set to 50, the modulation range of the
gas unit heater will be from 0% to 50%. To know
at which heat output the gas unit heater will work,
it is necessary to perform the following operation
(referred to the above example and assuming that
the gas unit heater is a G100):
Maximum modulation range [(100-0)%] =
(90,2 kW – 33,5 kW) = 56,70 kW
Modulation heat output =
(56,70 kW x 50 %) = 28,35 kW
Maximum heat output =
(33,5 kW + 28,35 kW) = 61,85 kW
6.3.10
Selection menu window
The selection menu contains 6 parameters that allow you
to customize the operating mode of the installed unit.
1.
Enter the selection menu by pressing the
key for 3
seconds and then, after entering the INFO menu, the
and
keys.
2.
Use the
and
keys to scroll through the menu
parameters.
3.
Once the parameter to edit has been defined, scroll
through the parameter values with the UP
and
DOWN
keys to proceed with the modification.
Once the desired value has been set, it is sufficient to
wait (a few seconds) for the value to start flashing. The
flashing indicates that the value has been accepted.
If you set a value that is not allowed for the chosen
parameter, the default value shown in Table
6.4
p. 35 will be restored.
4.
Press
to return to the INFO menu.
5.
Press
to exit the INFO menu and return to the main
screen.
