Galletti MYCOMFORT LARGE Mode D'emploi page 39

MYCOMFORT LARGE
Where:
o Set is the temperature setting made by the arrows
o ZN is the neutral zone (parameter P03)
The thermostat operating mode is indicated on the display by the symbols
(cooling) and (heating)
VENTILATION
GENERAL ASPECTS
The controller can perform two types of fan control:
- step control, with a fixed number of selectable speeds (3 or 4);
- modulating control, with speeds ranging from 0% to 100%
Which type of control will be used clearly depends on the type of fan (modulating or
non modulating) installed in the unit; the controller makes the selection based on the
value set for configuration parameter P14. Step control in turn follows two different
logics depending on the type of valve(s) (ON/OFF or modulating); this information, like
the fan type, is deduced by the controller based on the value taken on by configuration
parameter P14. Consequently, configuration parameter P14 must be carefully set in
order to ensure that the unit functions correctly.
Important: in the case of modulating fan control, in order to achieve a correct adjustment
the controller all takes into account the number of speeds implicitly indicated by the
value assigned to configuration parameter P00. Though it may seem contradictory to
talk about "number of speeds" in the case of modulating fan control, this information
is essential for indicating to the control system whether the unit is designed to work
in the natural convection mode or not. Based on this information, the modulating fan
control will follow different logics.
Summing up, the automatic control logics implemented by the controller (and described
in detail below) are the following:
- step fan control with ON/OFF valve (or valve absent) and 3 speeds, in the cooling
and heating modes (mirror logics);
- step fan control with ON/OFF valve (or valve absent) and 4 speeds, in the cooling
and heating modes (mirror logics);
- step fan control with modulating valve and 3 speeds, in the summer and winter
modes (mirror logics);
- step fan control with modulating valve and 4 speeds, in the summer and winter
modes (non-mirror logics);
- modulating fan control with ON/OFF valve, in the summer and winter modes (mirror
logics);
- modulating fan control with modulating valve
STEP FAN CONTROL
Operating speed selection
Using Fan key it is possible to select the following speeds:
AUTO
- 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):
COOLING
HEATING
È severamente vietata la riproduzione anche parziale di questo manuale / All copying, even partial, of this manual is strictly forbidden
> WITH 4-SPEED CONFIGURATIONS AND ON/OFF VALVE(S) OR W/O VALVE(S):
Speed
COOLING
HEATING
NB: in case of 4-speed configuration 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
COOLING
HEATING
> WITH 4-SPEED CONFIGURATIONS AND MODULATING VALVE(S):
Speed
3: maximum
2: medium
COOLING
1: minimum
Room tem-
perature
HEATING
Speed
Room tem-
perature
39
Speed
3: maximum
2: medium
1: minimum
sm: Extra-low
EN
Room tem-
perature
Room tem-
perature
Speed
3: maximum
2: medium
1: minimum
Room tempe-
rature
Room tempe-
rature
Speed
3: maximum
2: medium
1: minimum
sm: Extra-low
Room tempe-
rature
Speed
Room tem-
perature
FC66002638 - rev. 08