Galletti MYCOMFORT LARGE Manual Del Usuario página 41

MYCOMFORT LARGE
winter
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 (in other words: 2x1 unit, hence 4
speeds) 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
È severamente vietata la riproduzione anche parziale di questo manuale / All copying, even partial, of this manual is strictly forbidden
summer
Air tem-
perature
Speed
3: maximum
2: medium
1: minimum
Room
temperature
41
HEATING
> WITH 4-SPEED CONFIGURATIONS AND ON/OFF VALVE(S) OR W/O VALVE(S):
S p e e d
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):
COOLING
Speed
Room
temperature
GB
Speed
3: maximum
2: medium
1: minimum
sm: Extra-low
Room
temperature
Room
temperature
Speed
3: maximum
2: medium
1: minimum
Room
temperature
Room
temperature
Speed
3: maximum
2: medium
1: minimum
sm: Extra-low
Room
temperature
FC66002638 - rev. 05