MYCOMFORT BASE
VENTILATION
The controller can govern 3 or 4-fan speed indoor units
OPERATING SPEED SELECTION
Using Fan
key it is possible to select the following speeds:
G B
AUTO
>
Automatic fan speed: depending on the set temperature and
the room air temperature.
With 3-speed configurations:
where:
1 = low speed
2 = medium speed
3 = maximum speed
With 4-speed configurations
where:
sm = extra-low speed
1 = low speed
2 = medium speed
3 = maximum speed
NB: in case of 4-speed configuration and valve, or 3-speed configuration
+ CN ventilation in heating mode is shifted by 0.5°C to permit a natural
convection phase
> NO SYMBOLS Speed disabled. Can be selected only in heating mode
and with 4-speed configuration or 3-speed configuration + CN only. The
indoor unit operates by natural convection only.
>
Extra low speed. Can be selected only with 4-speed configura-
tion. It works at extra low speed only.
FC66002571 - rev. 02
È severamente vietata la riproduzione anche parziale di questo manuale / All copying, even partial, of this manual is strictly forbidden
COOLING
HEATING
COOLING
HEATING
>
Low speed.
>
Medium speed
>
High speed
NB In the case of fixed speed, the fan on/off logic will be equivalent to the
automatic logic.
WATER CONTROL
The ventilation operation depends on the system water temperature control.
Based on the operation mode, different heating or cooling thresholds will be
enabled.
Air temp.
Air temp.
Upon a call of the thermostat, the absence of the enabling signal will be
indicated on the display by the flashing of the symbol representing the active
mode (
or
The enabling signal is ignored:
> If the water sensor is not included (P04 = 0) or in alarm status
because disconnected
> In the cooling mode with 4-pipe configurations
FORCED OVERRIDES
The normal fan operating logic will be ignored in particular override situations
Air temp.
that may be necessary to ensure correct control of the temperature or the
unit's operation. This may occur:
in the cooling mode:
> on-board controller (P01 = 0) and configurations with valve: the mini-
mum speed available will be maintained even once the temperature has
been reached.
> On-board controller and valveless configurations: after every 10 minutes
Air temp.
in which the fan remains idle a 2 minute cleaning is carried out at medium
speed to enable the air sensor to read the room temperature more cor-
rectly.
In the heating mode
> While the heating element is on: the fan is forced to run at medium speed
> Once the heating element has gone off: a 2 minute post-ventilation cycle
will be run at medium speed. (NB: this cycle will be completed even if the
thermostat is switched off or in the event of a changeover to the cooling
mode).
18
COOLING
HEATING
)
Water temp.
Water temp.