Installation and operation manual
8
FWEC3
Advanced plus electr
onic controller
FC66002765
WITH 4-SPEED CONFIGURATIONS AND MODULATING
VALVE(S):
Speed
3: maximum
2: medium
1: minimum
sm: Extra-low
■ Speed disabled: Can be selected only in heating mode
and with 4-speed confi guration only. The indoor unit ope-
rates by natural convection only.
■
Extra low speed: can be selected only with
4-speed confi
guration. It works at extra low
speed only.
■ Minimum Speed
■
Medium
Speed
■
Maximum
Speed
N.B.: In the case of fi xed speed, the fan on/off logic will
be equivalent to the automatic logic.
MODULATING FAN
As in the case of step control, the modulating fan control logic
provides for two possible operating modes:
- automatic operation
- fi xed speed operation
The operating mode is selected by pressing the
button,
which switches between the automatic mode (the word AUTO
appears) and the display of the percentage value of the fi xed
speed (which fl ashes in place of the temperature SETPOINT).
While this display mode (the word “FAN” will also fl ash below
the room temperature value) is active it is possible to change
the speed percentage value using the UP and DOWN buttons
(within any limits set by the manufacturer) and confi rm fi xed-
speed operation by pressing the
button.
STEP FAN CONTROL
Operating speed selection
Using Fan
key it is possible to select the following
speeds:
■ AUT
O Automatic ventilation: depending on the set
temperature and the room air temperature
WITH 3-SPEED CONFIGURATIONS AND ON/OFF
VALVE(S) OR W/O VALVE(S):
Speed
3: maximum
2: medium
1: minimum
WITH 4-SPEED CONFIGURATIONS AND ON/OFF
VALVE(S) OR W/O VALVE(S):
Speed
3: maximum
2: medium
1: minimum
sm: Extra-low
N.B.: in case of 4-speed confi guration and valve,
ventilation in heating mode is shifted by 0.5°C
to permit a natural convection phase
WITH 3-SPEED CONFIGURATIONS AND MODULATING
VALVE(S):
Speed
3: maximum
2: medium
1: minimum
HEA
TING
Room
temperature
Speed
Room
temperatur
e
Speed
COOLING
Room
temperatur
e
COOLING
Speed
Speed
Room
temperatur
e
HEATING
Room
temperatur
e
COOLING
Speed
Room
temperatur
e
HEATING
Speed
Room
temperature
COOLING
Speed
HEATING
Room
temperature
Speed