AERMEC Novatherm GLLI10N Mode D'emploi page 33

VENTILATION ENABLING
The normal band (hot enabled at 39° C,
cold enabled at 17° C) or the reduced
band (hot enabled at 35° C, cold enabled
at 22° C) is selected based on the (dip4).
SEASON CHANGEOVER BASED ON THE AIR
The season changeover of some systems
is based on air temperature, these are:
- 2-pipe systems with the Water Probe
downstream of the valve.
- All 2-pipe systems without water probe.
- All 4-pipe systems.
The season changeover occurs as follows:
- Cold mode: if the ambient tempera-
ANTI-FREEZE PROTECTION
The anti-freeze protection allows you to
check that the room temperature never
falls to freezing values (even when the
selector is in the OFF position). If the
temperature drops below 7° C, the ther-
mostat still operates in HEATING mode
EXTERNAL CONTACT LOGIC
The thermostat also includes an external
contact that allows to set it to OFF if it
is closed (except if the thermostat is in
anti-freeze mode or as a slave in the TTL
network). This contact could be useful to
manage inputs such as window contacts,
faulty circulation pump, etc.
SLEEP FUNCTION
The Sleep function in the thermostat is
available if the thermostat is interfaced
with a presence sensor (with normally
open logic) connected to its SP input. In
practice the function consists in chang-
ing the regulation setpoint of the fan coil
if the air-conditioned environment is not
The air side season changeover is inhibited when the SP input is kept closed; this function prevents incorrect status
changes due to the change of the setpoint
COMFORT FUNCTION
The set point of centralized systems in
which there are network connected fan
coils, is decided by a central unit. The user
may have the opportunity to increase or
decrease the setpoint according to the
table below.
36
ture detected is below the setpoint of an
interval equal to the dead band (2° C or
5° C) it switches to the hot mode.
- Hot mode: if the ambient temperature
detected is above the setpoint of an
interval equal to the dead band (2° C or
5° C) it switches to the cold mode.
The dead band is decided through
with SETPOINT at 12° C and ventilation
in AUTO, if the temperature of the water
permits so. In case of Water Probe not pre-
sent or continuous ventilation, the fan is
always enabled. If the valve is present and
the water probe is upstream or the water
CE input status Machine status
Closed
Open
occupied; i.e. decreasing if operating hot,
increasing if operating cold. This function
aims at saving energy. In this specific case,
if the thermostat card was connected to a
presence sensor, the logic of the SP input
occurs as follows:
Heating
SP input
Dip 7 Off Dip 7 On Dip 7 Off Dip 7 On
D = 0 D = 0
Open
D = 5°C D = 2°C
Closed
Dead band [°C]
2
5
dip7 or rather if it has a dead band of
5° C (dip7 OFF) while if the dead band
is 2° C (dip7 ON).
probe is absent, the pre-heating of the
heat exchanger is still executed.
The thermostat exits the Anti-freeze mode
when the room temperature exceeds 9°C.
OFF
ON
Cooling
D = 0 D = 0
D = -5°C D = -2°C
Deviation of the setpoint [°C]
+/- 3
+/- 6