Operation - AERMEC Omnia HL C Manuel D'utilisation Et D'installation

RED/BLUE/PINK LED (C)
- Displays the operating mode -
HEATING or COOLING - currently
requested by the electronic thermo-
stat and whether the heating system
is able to satisfy the request.
SELECTOR (A)
- On/Off
- Automatic operation
- Manual speed selection

OPERATION

OMNIA HL C - HL CM fancoils are
delivered ready to operate in standard
configuration, though can be adjusted
by the installation technician to speci-
fic requirements by means of dedica-
ted accessories and configuration of
functions at the internal dipswitches
(see DIPSWITCH CONFIGURATION).
Response to controls is immediate,
except in special cases.
Unit types
OMNIA HL units are designed for twin-
tube units without valve.
Ventilation
Ventilation speed can be controlled
either manually by setting the selector
switch A to position V1, V2 or V3 (the
fan operates in on-off cycles according
to the speed selected), or automatically
when the selector switch is set to the
AUTO position (fan speed is controlled
by the thermostat according to room
temperature detected).
Ventilation is only permitted with lou-
vers open (manually in the case of units
without motorised louvers).
Season changeover
The thermostat automatically changes
function mode (heating in winter
mode and cooling in summer mode).
Season changes are triggered by the
temperature of the water in the
system:
- 35°C in normal winter mode or 31°C
in economy winter mode,
- 22°C in normal summer mode or
25°C in economy summer mode.
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IHLLX 1711 - 6887201_04
(Settings are configurable by means of
the DIP-switches.).
Water temperature controls
The thermostat permits fan operation
only if water temperature is suitable for
the active mode (winter or summer).
The fan enabling thresholds are as fol-
lows:
- 39°C in normal winter mode or 35°C in
economy winter mode,
- 17°C in normal summer mode or 22°C
in economy summer mode.
(Settings are configurable by means of
the DIP-switch switches.)
If water temperature is not suitable for
the set functioning mode, the control
panel alternately flashes LED C in violet
and red or blue depending on the mode
active at the time.
Probe correction
The required correction to be applied to
the ambient probe can be selected.
Frost Protection
This function prevents room tempera-
ture from dropping below an ambient
temperature of 7°C (even when the fan-
coil is off and selector switch A is in the
OFF position).
In the event that room temperature
drops below 7°C, the thermostat starts
up the fancoil in heating mode at a tem-
perature setting of 12°C and fan opera-
tion set to AUTO (if permitted by water
temperature, the unit is connected to
the power supply and the louvers are
open, in the case of manual units).
Frost protection mode is deactivated
when room temperature rises above
9°C.
WHITE LED (D)
- Indicates ventilation request by the
electronic thermostat.
SELECTOR (B)
- S e l e c t i o n o f
r e d r o o m t e m p e r a t u r e .
Emergency mode
In the event of fault in the ambient
probe, the thermostat operates as fol-
lows:
- ambient probe SA fault: the thermostat
sets to Emergency mode (indicated by
the flashing of white LED D).
- with selector switch (A) in OFF posi-
tion: fan off;
- with selector switch (A) in AUTO, V1,
V2 or V3 position: the fan performs
on-off cycles; in this case, the power
supplied by the terminal is controlled
manually by means of the temperature
selector switch (B): rotate the switch to
right to increase cycle duration, or to
the left to reduce it.
- water probe SW fault: the thermostat
sets to "Season changeover" mode.
- ventilation is constantly enabled.
Season changeover proceeds as follows:
a) when the thermostat is in cooling
mode and the thermostat request is 5°C
below the setting, the thermostat auto-
matically requests heating mode;
b) when the thermostat is in heating
mode and the thermostat request is 5°C
higher than the setting, the thermostat
automatically requests cooling mode.
r e q u i -